Projekta nosaukums: «SIA „Baltijas jūras ģeoloģijas centrs” zinātniskās un pētniecības infrastruktūras attīstība» Vienošanās par projekta īstenošanu numurs: 2012/0011/2DP/2.1.1.3.1/11/APIA/VIAA/030
Darbības programma un aktivitāte: Darbības programma «Uzņēmējdarbība un inovācijas», aktivitāte 2.1.1.3. «Zinātne un pētniecības infrastruktūras attīstība».
Projekta īstenošanas periods: 2012. gada 03.maijs –2015. gada 03.maijs.
Projekta kopējās attiecināmās izmaksas: EUR 3 706 048.85, tai skaitā ERAF finansējums – EUR 2 208 447.04 (70%) un privātais finansējums – EUR 946 477.31 (30%).
Projekta aktivitātes:
1. Jūras ģeoloģijas izpētes un bezpilotu zemūdens transporta līdzekļu/robotu prototipu modelēšanas laboratorijas rekonstrukcijas 1.etaps:
2. Iekārtu iegāde pētījumu veikšanai un zinātniskā personāla darba vietu ierīkošana:
Iegādātās iekārtas paredzētas dažādu pētījumu veikšanai un modelēšanai saistībā ar jūras grunts, gultnes un citu gultni ietekmējošu vides faktoru zinātniskajai pētniecībai.
3. Iekārtu iegāde bezpilota zemūdens transporta līdzekļu/robotu prototipu izstrādei:
Aktivitātes ietvaros ir veicama bezpilotu zemūdens transporta līdzekļu/robotu modeļu prototipu izstrāde. Prototipu licences tiks pārdotas dažādiem mašīnbūves uzņēmumiem, kas varēs veikt šo bezpilota zemūdens transporta līdzekļu/robotu ražošanu un pārdošanu ostām vai dažādu jūrā esošu objektu apsaimniekotājiem.
Projekta rezultāti:
1.aktīvitātes ietvaros – rekonstruēta un nodota ekspluatācijā 1 laboratorijas ēka Mērsraga ostas teritorijā.
2. aktivitātes ietvaros – iegādāts 65 iekārtas grunts pētījumu veikšanai un aprīkotas 15 darba vietas.
3. aktivitātes ietvaros – iegādātas 12 iekārtas bezpilota zemūdens transporta līdzekļu/robotu prototipu izstrādei.
Projekta īstenošanas vietas:
1. Lielā iela 62, Mērsrags, Mērsraga nov., LV-3284;
2. RTU telpas, Āzenes iela 16, III stāvs, telpa nr. 301;
3. RTU telpas, Lomonosova iela 1A k-1, Rīga, IV stāvs, telpas Nr. 402., 403. un 405.
„Baltijas jūras ģeoloģijas centrs” (BJGC) is a fast growing company that unites intellectual capabilities of Riga Technical University, design firm “L4” and hydro-technical construction experience of “BGS” Ltd. BJGC is fitted with the large amount of scientific measurement equipment, software and a laboratory to provide the solutions to the most complex problems in engineering design and ecological research within the water based environment. We also provide the cartography services and underwater object detection and search (pipelines, wreckage etc.). Our company has several employees that specialize in hydrography, geology and geophysics.
LX ™ 6 manufactured by Boart Longyear is a compact multi-purpose geotechnical rig capable of wireline and conventional coring, as well as DTH, rotary and auger drilling methods. Equipped with automatic SPT hammer for testing and sampling.
The rig is equipped with powerfull steel crawlers, 220 mm double clamp and 1000 mm mast dump for improved positioning on rough terrain.
Measuring equipment complex based on the StrataBox Sub-bottom Profiler that allows to detect and measure the thickness of dredged material deposits, detect hard substrate that has been covered by sedimentation, identify buried objects (such as cables and pipelines), and define the basement (or bedrock) layer for potential confined aquatic disposal sites for dredged material. This high-resolution marine sediment-imaging instrument is capable of delivering 6 cm of marine sediment strata resolution with bottom penetration of up to 40 meters in water depths of up 150 meters.
Thesystemconsistsof:
Features
The EdgeTech 3100 Portable Sub-Bottom Profiling System is a towed portable sub-bottom profiler system. It uses Full Spectrum (“chirp”) pulses to create high definition image slices of sub-bottom structure below the bottom. The equipment is suited for use in rivers, lakes, ponds, and other waterareas.
The system comes with a choice of two towfish: either the SB-424 or SB-216S. These towfish operate at different frequency ranges and selection between the two depends on the type of application.
The 424 operates at 4-24 kHz and will provide slightly higher resolution but less penetration.
The 216S operates at 2-16 kHz and provides slightly less resolution but greater penetration.
Application:
Bathymetric survey – the process of collecting data on depths in the area of research, that is performed using suitable technical equipment and in special circumstances executed manually. After the required post-processing the results of the bathymetric survey are presented as an array of georeferenced depths within the zone of research. Depending on the coordinate system of clients choice, each depth is represented as a set of three values:
XYZ (northing and easting, depending on selected projection; depth).
Later bathymetric data may be used for such applications as:
Measuring equipment complex based on a single-beam echo sounder could be used for the hydrographical surveying and measuring jobs. These portable devices are installed on a small size vessel and may be operated in a hard to reach areas of a water reservoir, where small depths are present. Measurements may be taken in depths of 0.3-75 m, with an accuracy of .01m.
The system consists of:
SonarMite v3 Specifications:
Based on TELEDYNE RESON 7101-Flow, GPS system Trimble R4 GPS and OCTANS 3000 gyrocompass and motion sensor.
Baltijas Juras Geologijas Centrs owns a survey boat equipped with Multibeam sonar system capable of performing surveys in sheltered areas such as rivers, lakes, harbours and dams where the effects of motion are limited. Together with GPS system Trimble R4 data is gathered with precision of up to +-0.03m in horizontal direction.
Our multibeam sonar produces real-time, high resolution, three dimensional (3D) maps of the seafloor while providing co-registered simultaneous dual frequency side scan imagery. The high number of channels enables superior rejection of multipath effects, reverberation and acoustic noise commonly encountered in the shallow water survey environment.
Sidescan sonar and bathymetric bottom profile and contour surveys for locating objects, identifying/documenting bottom features and search and recovery in lakes & rivers, estuaries and bays, coastal and offshore locations.
Construction inspection monitoring, geophysical surveys and both destructive selection and application of sophisticated equipment, and the utilization of certified technicians and inspection divers. Inspection services we provide include:
Marine Magnetics Explorer – scientific instrument used to measure magnetic field by using Overhauser nucleate magnetic resonance technology, based on the magnetic properties of the hydrogen nuclei.
Consiquently, by using such highly precise Overhauser technology, magnetometer’s sensors does not allow the heading error and consequent legs traveled in the opposite direction perfectly match no matter in which direction Explorer is oriented in a magnetic field of the earth.
Magnetometer allows collecting data independently of the direction of the survey and survey location.
Explorer is equipped with high-precision GPS senson that allows tying the survey data to coordinates in UTM projection in WGS84 format.
Explorer may be used for such activities as:
Remotely operated underwater vehicle (ROV) for underwater inspection and study. Multifunctional inspection robot is equipped with visual surveillance system, TV navigation camera, 5-function hydraulic manipulator, metal detector and the side scan sonar. The ROV’s maximum movement speed is 5 knots.
ROV is typically used for:
Sufficient power and thrust to withstand sea currents up to at least 3 knots.
High performance viewing system, with both a colour/zoom TV camera (mounted on a full Pan/Tilt unit) and a B/W very low light TV camera.
High level of modularity, with a wide range of optional sensors and tools, mounted on the ROV itself or on interchangeable skids:
"Baltijas Jūras Ģeoloģijas centrs" laboratories can perform soil tests in accordance with LVS EN 1997-2 "7. Eirokodekss. Ģeotehniskā projektēšana. 2. daļa: Pamatnes grunts izpēte un testēšana", which sets the rules for soil testing in laboratory in accordance with ISO 17892 from 1-12 standard group. Laboratory is capable to test soil strength (shear) and stiffness (deformation) characteristics using the most advanced GDS Instruments produced equipment - triaxial static apparatus with local deformation and bender element metering option, as well as with direct shear with pore pressure control option. This gives the possibility to fully automate total and effective soil parameter determination, which allows to get the maximum accurate data for further geotechnical design.
Soil testing laboratorySummary of performed tests
Определение параметров прочности и жесткости грунтов соответственно следующим стандартам - LVS CEN ISO/TS 17892-8:2005 “Geotechnical investigation and testing - Laboratory testing of soil - Part 8: Unconsolidated undrained triaxial test”; LVS CEN ISO/TS 17892-9:2005 “Geotechnical investigation and testing - Laboratory testing of soil - Part 9: Consolidated triaxial compression tests on water satured soils”
Connectivity |
ADV (RS232 OR IEEE), STD (USB), EL (USB) |
Data reception |
16 Bit |
Load limit (kN9 |
50kN |
Pressure limit (MPa) |
4MPa |
Sample sizes |
50mm 70mm 100mm diameter |
*BENDER ELEMENTS measures the velocity of transverse and longitudal waves moving in the sample, defining the shear modulus G0, that characterizes the stiffness of the soil.
**The GDS LVDT Local Strain Transducers provide on-sample small strain measurements of axial and radial strain.
Soil testing laboratorySummary of performed tests
Determination of strenght and stiffness parameters of soil according to the following standarts- LVS CEN ISO/TS 17892-10:2005 “Geotechnical investigation and testing - Laboratory testing of soil - Part 10: Direct shear tests”
Data entry |
8 channels, 16 bit wi, 10mV to 10V |
Dimensions |
L= 875mm x W = 350mm |
Precision |
<0.1% FSO |
Dispacement limits |
Vertical = +/- 15mm, horizontal = +/- 25mm |
Power |
240V or 110V 50/60Hz single branch |
Measurement accuracy |
16 bit (± 25mm = ± 0.7μm(shear), ±10mm = ±0.3μm (vertical) |
Sample dimensions |
100mm x 100mm |
Soil testing laboratorySummary of performed tests
Standart and modified Proctor test according to guidelines set in LVS EN 13286-2:2005 „Nesaistītie un hidrauliski saistītie maisījumi. 2.daļa: Laboratorijas atsauces blīvuma un ūdens satura testēšanas metodes. Proktora sablīvēšana”
Soil testing laboratorySummary of performed tests
Standart and modified Proctor test according to guidelines set in LVS EN 13286-2:2005 „Nesaistītie un hidrauliski saistītie maisījumi. 2.daļa: Laboratorijas atsauces blīvuma un ūdens satura testēšanas metodes. Proktora sablīvēšana”
Soil testing laboratorySummary of performed tests
Test is performed according to LVS EN 13286-47:2012 „Unbound and hydraulically bound mixtures – Part 47: Test methods for the determination of California bearing ratio, immediate bearing index and linear swelling”
Machine framed with double load. Two modes of speeds- 1 mm/min and 1.27 mm/min, in addition - rapid recovery mode. CBR scale – within 250mm diameter, gradation accroding to ISO 7500/1. External indicator 30mm with precision of 0.01mm. 230v, 50Hz
Soil testing laboratorySummary of performed tests
Quick test, that can be used to determine the soil moisture and compaction degree in field conditions in accordance with ASTM D 1558-99. Suitable for fine-grained soils.
9 diffent nozzles with diameters 4.52; 5.23; 6.40; 9.07; 12.83; 16.54; 20.22; 24.79; 28.55 mm, according to ASTM D 1558-99. Weight – 8kg
Soil testing laboratorySummary of performed tests
Test for determining the undrained bondage of soils in accordance with LVS CEN ISO/TS 17892-6:2005 “Geotechnical investigation and testing - Laboratory testing of soil - Part 6: Fall cone test” and clay soil consistensy determination according - LVS CEN ISO/TS 17892-12:2013 L “Geotechnical investigation and testing - Laboratory testing of soil - Part 12: Determination of Atterberg limits (ISO/TS 17892-12:2004)"
Soil testing laboratorySummary of performed tests
Filtration coefficient determination in accordance with GOST 25584-90/LVS CEN ISO/TS 17892-11:2013 L “Geotechnical investigation and testing - Laboratory testing of soil - Part 11: Determination of permeability by constant and falling head”
Soil testing laboratorySummary of performed tests
Grain-size classification of soil in accordance to LVS CEN ISO/TS 17892-4:2005 “Geotechnical investigation and testing - Laboratory testing of soil - Part 4: Determination of particle size distribution”/ LVS EN 933-1:2013 L “Tests for geometrical properties of aggregates - Part 1: Determination of particle size distribution - Sieving method”
Soil testing laboratorySummary of performed tests
Grain-size classification of soil in accordance to LVS CEN ISO/TS 17892-4:2005 “Geotechnical investigation and testing - Laboratory testing of soil - Part 4: Determination of particle size distribution” for soils sized <63µm
Soil testing laboratorySummary of performed tests
Quick test for determining pH level and temperature of soil both in laboratory and on site.
Measurement range |
Voltage mV |
-1999 to 1999 |
pH |
-2.00 to 16.00 |
|
Aut. temperature °C |
-10.0 to 120.0 |
|
Manual temperature °C |
- 5.00 to 90.0 |
|
Resolution |
Voltage mV |
1 |
pH |
||
Auto/Man. temperature °C |
||
Precision |
Voltage mV |
+/-0.1% +/- 1 digit |
pH |
+/-0.1% +/- 1 digit |
|
Auto/Man. temperature °C |
+/-0.5°C |
|
Size mm |
228 x 76 x 25 |
|
Svars |
Determined parameters |
|
Standarts |
|
Apparatus |
Soil physical properties: |
||||
|
||||
moisture |
LVS CEN ISO/TS 17892-1, GOST 5180-84 |
Oven |
||
density |
LVS CEN ISO/TS 17892-2, GOST 5180-84 | Stamp, scales | ||
mineral particle density |
LVS CEN ISO/TS 17892-3, GOST 5180-84 | Piknometer | ||
fluidity and plasticity limits |
LVS CEN ISO/TS 17892-12 | Fall cone | ||
Granulometry by hydrometer method |
LVS CEN ISO/TS 17892-4 | Hydrometers/aerometers | ||
sieve analysis (up to 1kg) |
LVS EN 933-1:1997 | Digital sieve shaker for Ø 200 mm sieves, Laboratory sieve set Ø 200 mm (0.063 mm, 0.125 mm, 0.250 mm, 0.500 mm, 1 mm, 2 mm, 4 mm, 5.6 mm, 8 mm, 11.2 mm, 16 mm, 22.4 mm, 31.5 mm, 45 mm, 63 mm, Sieve pan) | ||
sieve analysis (1-5 kg) |
LVS CEN ISO/TS 17892-4, LVS EN 933-1:1997, GOST 12536-79, GOST 8735-88 | Digital sieve shaker for Ø 200 mm sieves, Laboratory sieve set Ø 200 mm (0.063 mm, 0.125 mm, 0.250 mm, 0.500 mm, 1 mm, 2 mm, 4 mm, 5.6 mm, 8 mm, 11.2 mm, 16 mm, 22.4 mm, 31.5 mm, 45 mm, 63 mm, sieve pan) | ||
sieve analysis (more than 5kg) |
LVS CEN ISO/TS 17892-4, LVS EN 933-1:1997, GOST 12536-79, GOST 8735-88, LVS ISO 3310-1 | Digital sieve shaker for Ø 200 mm sieves (0.063 mm, 0.150 mm, 0.212 mm, 0.300 mm, 0.425 mm, 0.600 mm, 1.18 mm, 2 mm, 3.35 mm, 5 mm, further perforated 6.3 mm, 10 mm, 14 mm, 20 mm, 28 mm, 37.5 mm, 50 mm, 63 mm, 75 mm, Sieve pan) | ||
determination of organic content |
ASTM D 2974-07a, LVS EN 13039:2003 | Muffle furnace | ||
filtration coefficient (clay soil) |
LVS CEN ISO/TS 17892-11, GOST 25584-90 | Triaxial testing equipment with filtation coefficient determination ability | ||
filtration coefficient (sandy soil) |
LVS CEN ISO/TS 17892-11, GOST 25584-90 | Filtration apparatus according to GOST 25584-90 | ||
maximum compaction at optimum moisture (Proctor compaction test) |
LVS EN 13286-2:2011, GOST 22722-2002 | Standard and modified Proctor molds and hammers | ||
soil pH determination |
LVS ISO 10390:2005 | pH determination apparatus (laboratory/stationary) | ||
Soil mechanical properties: |
||||
fall cone test (unconsolidated undrained: cu) |
LVS CEN ISO/TS 17892-6:2005 | Fall cone apparatus | ||
Proctor penetrometer (field test/express) |
ASTM D1558; LVS EN 13286-2:2012 L | Proctor penetrometer (field test) | ||
Field vane test (unconsolidated undrained: cu) |
EN ISO 22476-9; DIN 4094-4; | Field vane test | ||
shear resistance (unconsolidated undrained: fi', c')* |
LVS CEN ISO/TS 17892-10, GOST 12248-96 | Ražotājs: GDS Instruments Modelis: GDSBPS | ||
shear resistance (consolidated drained: fi', c')* |
LVS CEN ISO/TS 17892-10, GOST 12248-2010 | |||
compressibility (mo, E)*** |
LVS CEN ISO/TS 17892-5,GOST 12248-2010 | Old USSR equipment / 3 oedometer kit | ||
compressibility (mo, E, Cv, Kf)*** |
LVS CEN ISO/TS 17892-5, GOST 12248-2010 | Old USSR equipment / 3 oedometer kit | ||
triaxial study unconsolidated undrained (NN (UU): cu)** |
LVS CEN ISO/TS 17892-8, GOST 12248-2010, BS 1377-7 | Manufacturer: GDS Instruments Model:ADVTAS 4MPa / 50kN with Benders and LVDT | ||
triaxial study unconsolidated undrained (KN (CU): fi', c', E)** |
LVS CEN ISO/TS 17892-9, GOST 12248-2010, BS 1377-8 | |||
triaxial study unconsolidated drained (KD (CD): fi', c', E)** |
LVS CEN ISO/TS 17892-9, GOST 12248-2010, BS 1377-8 | |||
uniaxial compression resistance |
LVS CEN ISO/TS 17892-7, GOST 12248-2010 | CBR mechanical equipment | ||
CBR (California bearing ratio) |
LVS EN 13286-47:2004 A, ASTM D 1883 | CBR mechanical equipment | ||
Software: |
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PLAXIS 3D |
||||
GGU-Atterberg |
LVS EN ISO 14688-2 | Fall cone | ||
GGU-Compact |
LVS EN 13286-2:2010 | Standard and modified Proctor molds and hammers | ||
GGU-Directshear |
DIN 18137-3 | Manufacturer: GDS Instruments Model: GDSBPS | ||
GGU-Labperm |
DIN 18130 | Filtration apparatus according to GOST 25584-90 | ||
GGU-Oedom |
LVS CEN ISO/TS 17892-5 | Old USSR equipment / 3 oedometer kit | ||
GGU-Sieve |
DIN 4022, LVS ISO 14688-1 | Laboratory sieve set Ø 200 mm (0.063 mm, 0.150 mm, 0.212 mm, 0.300 mm, 0.425 mm, 0.600 mm, 1.18 mm, 2 mm, 3.35 mm, 5 mm, further perforated 6.3 mm, 10 mm, 14 mm, 20 mm, 28 mm, 37.5 mm, 50 mm, 63 mm, 75 mm, Sieve pan) | ||
GGU-Uniaxial |
DIN 18136, LVS CEN ISO/TS 17892-7 | CBR mechanical equipment |
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FLIR T420 thermal imaging cameraTotal stationAcoustic Doppler Current ProfilerCoring apparatusMultifunctional weather stationThe low range turbidimeter Portable multifunctional water quality analyzer Aquameter
Baltijas Jūras Ģeoloģijas Centrs is equipped with high performance industrial infrared Camera Flir T420 with a range of measured temperatures from -20 до +650 С, the factory calibration and accuracy of 2% of the measured results. Precise infrared image has a high contrast and resolution of 76800 pixels and 4x digital zoom.
Can be used in all industries where there is a need to ensure quality control of the production process, to promptly and timely monitor heat changes in individual parts of the machine or mechanism as a whole.
Other measurementsTotal stationAcoustic Doppler Current ProfilerCoring apparatusMultifunctional weather stationThe low range turbidimeter Portable multifunctional water quality analyzer Aquameter
Baltijas Juras Geoloģijas Centrs owns a multifunctional electronic total station Trimble S6, that can provide versatility and excellent measurement accuracy – the angles are determined with an accuracy of 5 seconds, allowing to use the instrument for a wide variety of surveying jobs. The device has the ability to capture and track different targets and also the classical reflection lenses at a distance. Trimble DR measuring technology increases the distance range of surveying without the use of reflector, so it is easy to reach points that are otherwise hard to reach, for example - facades.
Here at Baltijas Jūras Ģeoloģijas Centrs we can solve the following problems:
Other measurementsFLIR T420 thermal imaging cameraAcoustic Doppler Current ProfilerCoring apparatusMultifunctional weather stationThe low range turbidimeter Portable multifunctional water quality analyzer Aquameter
Direct-reading Acoustic Doppler Current Profiler Workhorse Monitor (ADCP)manufactured by „Teledyne RD Instruments”. The Monitor is typically bottom frame-mounted and hard-wired to shore to provide real-time monitoring of coastal currents at set depths and wave height monitoring in the frequency range of 0.5 seconds to 24 hours and layers of 0.2 to 8 meters.
Extreme accuracy and reliability: The Monitor is ideally suited for the most demanding environments, including high traffic areas such as ports and harbors.
A four-beam solution: Teledyne RDI’s patented 4-beam design improves data reliability by providing a redundant data source in the case of a blocked or damaged beam; improves data quality by delivering an independent measure known as error velocity; and improves data accuracy by reducing variance in your data.
Other measurementsFLIR T420 thermal imaging cameraTotal stationCoring apparatusMultifunctional weather stationThe low range turbidimeter Portable multifunctional water quality analyzer Aquameter
A handheld bucket sampler for collecting bottom sediments for biological, hydrological and environmental studies.
The sampler is lowered from the watercraft with a rope and when it is in contact with the bottom, mechanism activates the closure flaps that allows gripping the sediment.
Subsequently Baltijas Juras Ģeoloģijas Centrs produces a full range of physical and chemical analysis of the soil in the laboratories.
A handheld Kajak Corer sampler is equipped with a removable acrylic coring tube (diameter 80mm, length 1m) that allows taking core samples from the bottom of shallow waters (up to 4m).
Other measurementsFLIR T420 thermal imaging cameraTotal stationAcoustic Doppler Current ProfilerMultifunctional weather stationThe low range turbidimeter Portable multifunctional water quality analyzer Aquameter
Other measurementsFLIR T420 thermal imaging cameraTotal stationAcoustic Doppler Current ProfilerCoring apparatusThe low range turbidimeter Portable multifunctional water quality analyzer Aquameter
Industrial turbidity and floating particle analyzers with SOLITAX nephelometric adapters may be applied to a wide range of works. Those adapters can determine the level of turbidity in both ultra clean and opaque water. Additionally, the system can analyze the water for floating particles of sludge in its active and dewatered states. The SC200 controller processes the data through two independent digital channels and allows using either one or two adapters at the same time. Both readings are shown on the display of the controlled and may be stored on SD-card or transferred to other controller by either analogue or digital signal.
Other measurementsFLIR T420 thermal imaging cameraTotal stationAcoustic Doppler Current ProfilerCoring apparatusMultifunctional weather stationPortable multifunctional water quality analyzer Aquameter
Baltijas Juras Geoloģijas Centrs owns sophisticated, yet easy to use multiparameter water quality test system that can measure dissolved oxygen content, salinity, turbidity, permeability and pH content within dissolved substances. The measuring device is equipped with GPS module to ensure the geotagging of gathered field data.
With an outside diameter of just 42mm the Aquaprobe has been designed to fit comfortably into pipes, wells and bore-holes.
The list of measurable parameters:
Other measurementsFLIR T420 thermal imaging cameraTotal stationAcoustic Doppler Current ProfilerCoring apparatusMultifunctional weather stationThe low range turbidimeter
The scope of the „Ogres ietekas Rīgas HES ūdenskrātuvē sanešu izpēte” project included hydrographic survey works within Ogre river waterarea up the stream (1700m in lenght) and in Daugava river waterarea (2500m in lenght), in coordinates X 534849.05 Y296739.50 un X 538656.23 Y 296582.6. All works were performed according to International Hydrographic Organization standards. Total area of the surveyed site was 1085000 m2.
In the course of works the bathymetric survey of the site was performed and the total volume of deposited sediment was calculated.
The total volume of sediment depositions was 447449.81 m3, which also included the inclusions of the rocks (Ø60-300mm).
The average layer thickness of the deposition was around 1m, and reached 3m in height in some areas.
The volume calculations were provided, along with bathymetric maps of the site and depths until top and lower levels of the sediment boarders. Sub-bottom profiles were also graphically derived and submitted to the Client.
During the coarse of the surveying job, the single beam echo sounder, SBS-424 sub-bottom profiler were used in conjunction with Trimble Geo Explorer XT receiver.
The scope of survey works on Prokhorokolokolovskoye lake (Kazakhstan) included using single beam echosounder and StrataBox sub-bottom profiler and the following results were then produced:
We offer complex solutions – starting from development of the project’s technological solutions and the stage of agreement even up to performance of service and assessment of environmental impact and analysis of environmental aspects. We perform dredging and dewatering works by our own equipment and fleet.
We have following:
Cutter suction dredger “BEBRS” - IHC Beaver 1200, which ensures deepening of bottom bed up to 12 m depth. The pumping distance is up to 5 km, without of additional booster station.
Suction dredger “DELFINS” with DAMEN DOP 2320 main pump equipped with jet system and ICE800 power pack is excellent for performance of dredging works in internal harbors down to 18 m of depth. Additionally equipped by AUGER system for efficient and smooth dredging of suspended matter (silt, soil, sand, sludge). Depending of the pumping distance and the type of ground, dredger “DELFINS” ensures the yield of sand pumping from 300 m3/per hour of ready material. The pumping distance is up to 2 km, without use of auxiliary booster.
The dredger “KRABIS” WATERMASTER CLASSIC II - multifunctional amphibian type cutter suction dredger-excavator made by AQUAMEC as unique for dredging and dewatering works in internal watercourses if the cleaning of shore zone should be performed from seaweeds, bed deepening is up to 5 m of depth, ground material (sand, silt). The pumping distance is up to 1 km, possibility ground excavation by a bucket, driving of steel piles and wooden piles for strengthening of embankment by MOVAX equipment, cleaning of sediments and water reservoirs.
All dredgers are under Latvian flag and CLASS of Latvian Maritime Administration (LMA).
GPS systemson all dredgers help to perform dredging works with high preciseness.