Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

105 results about "Soil test" patented technology

Soil test may refer to one or more of a wide variety of soil analysis conducted for one of several possible reasons. Possibly the most widely conducted soil tests are those done to estimate the plant-available concentrations of plant nutrients, in order to determine fertilizer recommendations in agriculture. Other soil tests may be done for engineering (geotechnical), geochemical or ecological investigations.

Stratum-parameter coupling randomness three-dimensional random field modeling and shield construction ground surface settlement rapid prediction method and device based on multi-source data fusion

The invention belongs to the field of geotechnical engineering and engineering geological information modeling, and relates to a stratum-parameter coupling randomness three-dimensional random field modeling and shield construction ground surface settlement rapid prediction method and device based on multi-source data fusion. According to the method, a three-dimensional joint random field acting on stratum types and rock-soil key physical property parameters at the same time can be constructed under the joint constraint of multi-source data such as drilling, geophysical prospecting, geotechnical tests and terrains, and a calibrated, explainable and updatable geological section automatic generation and uncertainty quantification channel is formed; on the premise that geological rationality is guaranteed, section geometry and parameter distribution under the conditions of complex structures and lateral phase change are restored robustly, the accuracy, consistency and interpretability of the three-dimensional geological section are remarkably improved, and a combined uncertainty result which can be directly used for rapid prediction and risk assessment of shield construction settlement is output. The technical problems that a geological section generated by an existing method is not accurate enough, uncertainty is difficult to quantify, and the extrapolation capacity of a complex scene is weak are solved.
Owner:HUAZHONG UNIV OF SCI & TECH

Visual detection test method for damage crack of solidified soil test piece

The invention discloses a visual detection test method for damage cracks of a solidified soil test piece, and particularly relates to the technical field of geotechnical engineering material detection. The method comprises the following steps: doping fluorescence labeling particles in a solidified soil test piece, and applying periodic load to induce crack formation after curing and forming; synchronously exciting fluorescent particles through an ultraviolet excitation light source, and collecting a short-wave fluorescence response image sequence; inputting the image sequence into a deep residual neural network model, identifying a nonlinear enhancement region of a fluorescence signal, and deducing a crack initiation position and a propagation path; constructing a three-dimensional dynamic model of crack evolution in combination with an image space reconstruction algorithm and time sequence comparison, extracting indexes such as a crack propagation rate, a bending angle and crack density, performing comparative analysis on the indexes and initial parameters of a material, evaluating a microstructure damage development mechanism, and outputting a visual damage evolution result; the method provided by the invention can realize high-precision, non-destructive and dynamic detection of the fine cracks in the solidified soil, and has the advantages of high identification sensitivity, strong modeling precision and good engineering adaptability.
Owner:GUANGDONG UNIV OF TECH

Soil column porosity dynamic inversion system and method and sensor array structure

The invention discloses a soil column porosity dynamic inversion system and method and a sensor array structure, and belongs to the technical field of environmental soil tests. The system comprises a test soil column system; the acoustic monitoring module is used for acquiring ultrasonic travel time and amplitude information in the soil column; the resistivity monitoring module is used for acquiring resistivity information in the soil column; and the data processing host receives data of the acoustic monitoring module and the resistivity monitoring module, executes a joint inversion algorithm based on a rock physical coupling model, and dynamically inverts spatial distribution and time evolution of the three-dimensional porosity in the soil column by constructing a target function containing ultrasonic travel time / amplitude data and resistivity data at the same time. According to the invention, real-time, three-dimensional, high-resolution and high-adaptability soil column internal structure monitoring can be realized, and solid data support is provided for environmental rock and soil pollution migration mechanism research and restoration effect evaluation.
Owner:TONGJI UNIV

Extraterrestrial soil detection probe

The application provides an extraterrestrial celestial body soil detection probe, which comprises a shell, a soil collecting structure and a soil testing structure; the soil collecting structure is arranged on the shell; the soil collecting structure comprises a collecting hole and a boss; the boss is arranged on the shell, the top of the boss is higher than the outer surface of the shell, and the collecting hole is connected between the inside and outside of the shell; and the soil testing structure is arranged in the collecting hole. The extraterrestrial celestial body soil detection probe further comprises a heating sheet, a pipe and a volatile component detector; the volatile component detector is arranged in the shell, the heating sheet is attached to the outer wall of the collecting hole, and the collecting hole is connected with the volatile component detector through the pipe. The four soil collecting structures arranged in the circumferential direction of the shell are used to collect soil, and soil physical property analysis is carried out through the soil testing structure, so that the demand for extraterrestrial celestial body soil detection is met, and important data support is provided for planetary science and the like.
Owner:SHANGHAI SATELLITE ENG INST

Soil testing dissolution apparatus

The utility model relates to soil detection technical field especially discloses a kind of soil detection dissolving device, hollow rotating disc rotation process drives stirring rod revolution, in the stirring rod rotation process, by the second spur gear of its surface sleeve joint engagement fixed first spur gear, to make stirring rod with the center of dissolving barrel as pivot rotation process, rotation is stirred operation, to increase stirring mixing area, reduce stirring dead point, and the two triangular scrapers of stirring rod two sides installed and the surface of dissolving barrel are attached, through the rotation of stirring rod drive triangular scraper to scrape and clean operation to the inner wall of dissolving barrel, this can effectively prevent soil from adhering on barrel wall when not yet mixed evenly, avoid the problem of insufficient dissolution due to soil adhesion, ensure the smooth progress of entire dissolving process, improve dissolving effect, also help to improve the accuracy of detection result.
Owner:ZHONGDI QINGYANG (HUBEI) TESTING CERTIFICATION CO LTD

Sample injector for gas chromatograph for soil detection

The sample injector comprises a sample injector body, an operation pen, a supporting frame, a pressing cylinder and a pushing assembly, the operation pen is arranged on one side of the sample injector body, the supporting frame is fixedly connected to one side of the sample injector body, the operation pen is connected to the top of the supporting frame in a penetrating mode, and the pressing cylinder is fixedly connected to the top of the supporting frame. The top of the operation pen is sleeved with the pressing cylinder, the pushing assembly is arranged on one side of the sample injector body and used for pushing the operation pen, a fixing plate is fixedly connected to one side of the sample injector body, and the fixing plate is used for fixing the position of the pushing assembly. Through the design of the supporting frame, the pressing cylinder and the pushing assembly, the arranged supporting frame is fixed on one side of the sample injector body, an operation pen is inserted into the supporting frame during use, the pushing assembly drives the pressing cylinder to move downwards, and the position of the operation pen is fixed through the supporting frame and the pressing cylinder; and the situation that the operating pen falls off and is damaged is avoided.
Owner:NINGBO RUIQI TESTING TECH CO LTD

Rock and soil oxidation test box

The utility model relates to the technical field of rock and soil testing, in particular to a rock and soil oxidation testing box which comprises a testing box body, the testing box body is existing equipment for rock and soil oxidation testing, and the front side of the upper portion of the testing box body is provided with a test sample placing opening. The test box comprises a test box body, and further comprises a door plate, a mounting frame, a placing frame, a filter screen, a fixing frame, a guide rod and a vibration piece, the door plate is hinged to the placing opening of the test box body, the mounting frame is assembled in the test box body, the top of the mounting frame is a frame body provided with a placing groove, and the placing frame is loaded in the placing groove of the mounting frame in a sliding mode. According to the utility model, the mounting frame and the placing frame are additionally arranged in the test box body, and the placing frame is driven by the vibrating piece to carry out vibration screening in the mounting frame, so that soil mixed in rock can be effectively screened, rapid separation of the rock and the soil after test is realized, and compared with manual operation, the test box is more efficient and saves time.
Owner:NINGBO EAST CHINA NUCLEAR IND ENG SURVEY INST

Transparent soil embankment rigid frame pile displacement observation simulation test system and test method

The transparent soil embankment rigid frame pile displacement observation simulation test system comprises a model box, a soil body consolidation mechanism, a rainfall load simulation mechanism, a traffic load simulation mechanism, a light source mechanism, a shooting mechanism and a calculation analysis mechanism. And the settlement and displacement of the transparent soil embankment slope under the action of the composite load can be observed in real time. Wherein the rainfall load module can accurately regulate and control the rainfall intensity and the rainfall capacity; the traffic load module can simulate the size and frequency of a vehicle cyclic load; the laser slicing technology of the light source module and the high-speed imaging technology of the shooting module are combined, and the PIV technology of the calculation and analysis module is matched, so that the dynamic deformation field in the transparent soil can be obtained. The device fills up the blank that an existing transparent soil test lacks real engineering load simulation, provides experimental data closer to reality for research of slope stability, foundation settlement and the like, and has the advantages of being simple in structure, convenient to regulate and control and accurate in observation.
Owner:FUJIAN AGRI & FORESTRY UNIV

A device and method for testing the free expansion rate and permeability coefficient of an expansive soil in situ

The application discloses an expansive soil free expansion rate and permeability coefficient field test device and method, relates to the technical field of expansive soil test, and aims to solve the problems of non-uniform expansive soil expansion potential discrimination standards and large test data discreteness in the prior art. The device comprises a ring cutter assembly, a water content measuring assembly, a displacement measuring assembly and a water supply assembly. The ring cutter assembly is used for fixing a test soil body; the water content measuring assembly is used for monitoring the water content of the soil body in real time; the displacement measuring assembly is used for recording the surface and deep displacement of the soil body; and the water supply assembly is used for controlling water injection. The test method comprises a test method and a numerical analysis method. The water content and displacement changes of the test soil body are monitored through water injection, the permeability coefficient and the free expansion rate of the soil body are calculated, the water content curve is fitted in combination with numerical analysis, the expansion coefficient and the saturated water content are solved, and finally, the free expansion rate of the soil body is determined, so that the free expansion rate and the permeability coefficient of the expansive soil are rapidly and accurately determined on site, the expansion potential is determined, and a reliable basis is provided for engineering application.
Owner:YUNNAN TRAFFIC PLANNING DESIGN RESEARCH INSTITUTE CO LTD +2

Multifunctional soil test sample cutting device

ActiveCN224695567UAdjust cutting thicknessHigh precisionSoil typeAgricultural engineering
The utility model discloses a multifunctional soil test sample cutting device relates to soil test technical field. The utility model discloses a frame is provided with adjusting mechanism and positioning mechanism on the frame, the adjusting mechanism includes two slide rods no. 1 slidingly penetrating the top of frame. The utility model discloses be provided with adjusting mechanism, manually hold the handle and drive slide rod no. 1 and arc plate no. 1 to move upwards or downwards, so that multiple soil cutters can move vertically upwards or downwards, and then multiple soil cutters sample cutting to soil sample, and before sample cutting, individually twist knob no. 1 and drive threaded rod no. 1 to rotate, under the cooperation of multiple slide rods no. 2, make soil cutter can be close to or away from sample, and then the sample cutting thickness of sample is adjusted, greatly improve the precision and operation flexibility of this soil test sample cutting device, and multiple different shapes of soil cutters make the equipment can adapt to various soil types and test demand.
Owner:TIANJIN HUATIE ENG CONSULTING CO LTD

Lateral pressure adjustable expansive soil expansion rate measuring device and method

The invention relates to the technical field of soil testing, and discloses a lateral pressure adjustable expansive soil expansion rate measuring device, which comprises an experiment box, a sample cylinder and a measuring module, symmetrical through holes are formed in the side wall of the sample cylinder, a lateral pressure loading system is correspondingly arranged on the outer side of each through hole, and each lateral pressure loading system comprises a rigid piston head capable of extending into the cylinder, a piston rod, a closed medium pressure cavity and a miniature constant pressure pump; the pump is connected with the pressure cavity through a pipeline, and the piston head is driven to apply adjustable lateral pressure to the sample by accurately feeding and discharging a medium; the measurement module comprises a vertical deformation and lateral pressure measurement system and integrates free expansion and lateral confinement expansion measurement functions; the rigid piston and the water medium are adopted for constant-pressure loading, the structure is simplified, operation is convenient and fast, rapid response and high-stability control over lateral pressure are achieved, the membrane embedding effect is thoroughly eliminated, a multi-stage constraint continuous test can be completed through one-time sample loading, and the test efficiency and data consistency are remarkably improved.
Owner:ANHUI UNIVERSITY OF ARCHITECTURE +1

Long-term dynamic monitoring equipment for temperature and humidity field of key landslide part in frozen earth region

The utility model provides a frozen soil area landslide key part temperature and humidity field long-term dynamic monitoring device, and relates to the technical field of intelligent equipment, and the device comprises a measurement control host which is connected with a first PVC hard pipe and a second PVC hard pipe through a cable; the first PVC hard tube and the second PVC hard tube are respectively provided with a power supply electrode and a measuring electrode; third containing holes are formed in the second PVC hard pipe at intervals of a third preset distance, and a temperature measuring probe is contained in each third containing hole. The corresponding electrodes are supported by the two PVC hard tubes, the temperature measuring probe is buried underground to work for a long time, the water content profile is converted into the resistivity profile based on an indoor soil test, and in-situ dynamic long-term monitoring of the soil water content profile and the temperature of the key part of the landslide is achieved. The device can help to analyze soil freeze-thaw states and daily freeze-thaw cycle processes of different parts of the landslide and moisture infiltration processes of key parts of the landslide under rainfall conditions and freeze-thaw conditions, and is simple in structure, efficient and reliable.
Owner:QINGHAI ENG GEOLOGE INVESTIGATION & SURVEY INST +1

Grouting body surface roughness calculation method, device, equipment and product

The invention discloses a grouting body surface roughness calculation method, device and equipment and a product. The grouting body surface roughness calculation method comprises the steps that the porosity and grain composition curve of a to-be-grouted area soil body is obtained; target parameters are extracted from the grain composition curve, and the average grain size of grain groups of different specifications is determined; based on the grain composition curve, a preset coefficient representing a parameter linear relation is obtained through discrete element simulation solution; and based on the target parameter and the porosity, combining with a preset coefficient for quantification to obtain the surface roughness. By means of the method, before grouting construction, the roughness can be rapidly predicted only through conventional soil test data, and high cost, heavy labor and material waste for preparing a large solid grouting body sample can be avoided; according to the method, reliable roughness input parameters are provided for accurately analyzing complex interface mechanical behaviors of the grouting body and the surrounding soil body in the coarse-grained soil, the safety and economical efficiency of engineering design can be improved, and the method can be widely applied to the technical field of electric digital data processing.
Owner:SUN YAT SEN UNIV

Vacuum stirring and soil sample preparation integrated intelligent device and method

The application discloses a kind of vacuum stirring and soil sample preparation integrated intelligent device and method, including stirring device, consolidation sample preparation device, vacuum pumping device, intelligent control system.Stirring device is used to stir soil sample into uniform mud;Consolidation sample preparation device is used to prepare remolded soil sample;Vacuum pumping device ensures that the internal environment of overall test is in vacuum state;Intelligent control system realizes intelligent staged loading to consolidate soil sample in stages.The beneficial effects of the scheme provided by the application are that: by vacuum pumping device, ensure that mud is in vacuum state during stirring and transportation to consolidation sample preparation device, effectively reduce the air content in remolded soil sample, in the process of soil sample consolidation forming, the pore water pressure and effective stress of soil sample are calculated in real time by means of intelligent control system, the degree of consolidation is accurately controlled, the load size is accurately controlled intelligently, automatic staged loading is realized, complete soil sample consolidation settlement curve can be obtained, and soil test is carried out in detail.
Owner:TONGJI UNIV

Online soil detection quadrupole mass spectrometer based on elemental analysis technology and analysis method

The invention belongs to the technical field of mass spectrometry, and particularly relates to an on-line soil detection quadrupole mass spectrometer based on an element analysis technology and an analysis method. The sampling system comprises an automatic sampling mechanical arm moving device, a washing device, a blowing device, a sample cabin, a sealing O ring, a sample transmission mechanism, a laser and a primary reflecting plate, and the analysis system comprises a laser reflecting lens, a transmission lens, an ion source, a mass analyzer, a detector, a vacuum transfer cavity, a vacuum analysis cavity, a mechanical pump, a molecular pump and a control computer. A mass analyzer, an ion source and a transmission lens are arranged in a cavity body of the vacuum transfer cavity, the molecular pump is connected with the vacuum transfer cavity, and the vacuum transfer cavity and the analysis vacuum cavity are two-stage differential systems. Laser and ion source double ionization is adopted to improve the ion yield, interference is reduced in combination with a two-stage differential vacuum system, and the quadrupole mass spectrometer is high in vibration tolerance and suitable for field complex environments such as unmanned farms.
Owner:SHANGHAI YUDA INDUSTRIAL CO LTD

Soil detecting and dissolving equipment

The utility model discloses soil detection dissolving equipment which comprises a shell, a liquid inlet pipe positioned at the upper part of the shell and a liquid outlet pipe positioned at the lower part of the shell, the cover plate is located on the upper portion of a first hole in the upper end of the shell, the motor is fixedly connected to the upper end of the cover plate, the sealing cover is fixedly connected with the output end, stretching into the shell, of the motor, and the first charging barrel is detachably connected with the sealing cover. And a plurality of second holes are uniformly formed in the peripheral wall of the first charging barrel. The device disclosed by the utility model has the advantages that a certain amount of soil to be detected is placed in the cylinder, the first charging barrel and the sealing cover are sealed through the bolt, and the sealing gasket is arranged between the sealing cover and the first charging barrel. The sealing ring is arranged between the sealing cover and the cylinder, so that the sealing performance is effectively ensured; the motor drives the sealing cover and the first charging barrel to rotate, so that the stirring rod rotates to fully dissolve soil in the cylinder, and the cylinder can also separate insoluble stones from a soil solution.
Owner:YUNNAN SHENGHUAN TESTING TECH CO LTD

Soil sampling device for geotechnical testing

The utility model relates to the civil engineering sampling technical field discloses a soil sample sampling device for soil test, including support shell, the outside fixed connection of support shell has the connection fixed ring, the inside fixed connection of connection fixed ring has the connection fixed column, the inside fixed connection of connection fixed column has the connection mechanism, the outside slide connection of connection mechanism has the push -out mechanism, the connection mechanism includes the drive assembly for driving, the outside fixed connection of drive assembly has the connection sliding block, the outside both sides fixed connection of connection sliding block has connection rotary column no.
Owner:CHINA RAILWAY NO10 ENGINEERING GROUP THIRD CONSTRUCTION CO LTD +1

Pile foundation buckling behavior intelligent analysis method and system based on transparent soil model test

The invention discloses a pile foundation buckling behavior intelligent analysis method and system based on a transparent soil model test, and particularly relates to the technical field of engineering parameter intelligent analysis. The method is used for solving the problem that transparent soil test observation information cannot be effectively converted into accurate design parameters due to the fact that simplified representation of a traditional mechanical model is not matched with a real complex constraint form of soil around a pile. The method comprises the following steps: extracting displacement field data of soil around a pile from a transparent soil model test sequence image, and identifying a potential instability path; directly mapping to generate quantitative data representing soil body spatial constraint stiffness distribution according to the spatio-temporal evolution characteristics of the path by utilizing a trained machine learning model; then weak and strengthened constraint areas are identified based on the data, and the constraint contribution degree and the system redundancy improvement potential of each area are quantified through virtual parameter disturbance analysis; and finally, based on the quantitative indexes, pile foundation reinforcement scheme parameters for the weak area are generated, so that intelligence and refinement from test observation to reinforcement design are realized.
Owner:YANCHENG INST OF TECH +2

High-depth draw shaft material airflow acceleration speed-adjustable angle impact wear test device

The invention belongs to the technical field of geotechnical test equipment, and discloses a high-depth draw shaft material airflow acceleration speed-adjustable angle impact wear test device which comprises a main body, a simulated rock mass and a processor, a gas-solid mixing pipe is connected with a gas storage tank through a gas conveying pipe, and an electric control valve and an electronic barometer are arranged at the joint of the gas storage tank and the gas conveying pipe; the gas-solid mixing pipe is connected with the accelerating pipe, the accelerating pipe is connected with a tangential air inlet of the cyclone separator, a discharging throat pipe at the bottom end of the cyclone separator is connected with one end of the straight pipe through the elbow connecting pipe, the tail end of the straight pipe is in sliding sealing connection with the nozzle, and a connecting rod on the nozzle is connected with the electric cylinder through the rotating rod. Secondary acceleration is carried out through the accelerating pipe and the cyclone separator, high axial and tangential speeds are provided, the energy utilization rate is increased, and the impact speed is controlled through the opening degree of the electric control valve; the electric cylinder stretches out and draws back, the connecting rod drives the nozzle to change the angle, then the impact angle is controlled, and a research equipment foundation is provided for draw shaft design and effective treatment.
Owner:KUNMING UNIV OF SCI & TECH +1

Soil detection sampling device not easy to damage soil layer

The invention discloses a soil detection sampling device not easy to damage a soil layer, the soil detection sampling device comprises an active driving mechanism and a sampling mechanism, the active driving mechanism is provided with the sampling mechanism which is driven by the active driving mechanism to lift and rotate, the sampling mechanism comprises an outer sleeve, a first spiral blade, a drill rod mechanism and a connector, the drill rod mechanism is provided with the connector, and the first spiral blade is arranged on the outer sleeve. An outer sleeve arranged on the drill rod mechanism in a sleeving manner is arranged on the connecting body, a plurality of sampling through holes are formed in the peripheral surface of the outer sleeve, a first spiral blade is arranged on the peripheral surface of the outer sleeve, and a sample soil accommodating space is reserved between the drill rod mechanism and the outer sleeve; the drill rod mechanism comprises a tensioning mechanism and a second spiral blade arranged on the peripheral surface of the tensioning mechanism, and compared with the prior art, the soil layer structure can not be damaged easily, and the accuracy of related soil sample data is improved.
Owner:ZHEJIANG HUAZHEN TECH CO LTD

Soil tester

1. The name of the design product: soil tester. 2. The use of the design product: for collecting data such as soil temperature, humidity, moisture, PH value, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.
Owner:陈俊凯 +1

Method and device for calculating soil shear strength based on internal normal stiffness of particles

The application discloses a kind of soil shear strength calculation method and device based on particle internal normal stiffness, method mainly includes: obtaining different particle normal contact stiffness corresponding shear strength parameter, obtain multiple data pairs, fitting to multiple data pairs, obtain the relationship curve of soil internal particle normal contact stiffness and shear strength parameter;The axial stress of the soil particle to be measured is obtained, the normal contact stiffness of the particle is determined, and the shear strength parameter of the soil to be measured is obtained according to the relationship curve of the soil internal particle normal contact stiffness and the shear strength parameter.The application can break through the limitation of conventional indoor soil test and soil mechanics macroscopic phenomenological research, and quickly and accurately calculate the loess shear strength parameter, to provide accurate and reliable data parameters for highway engineering high slope stability calculation.
Owner:GANSU PROVINCE TRANSPORTATION PLANNING SURVEY & DESIGN INST

Reinforced foam light soil test piece forming device

The utility model discloses a reinforced foam light soil test piece forming device. The device comprises a forming mold; the separating assembly comprises sliding rails, sliding frames, first circular holes, connecting rods and second circular holes, the sliding rails are fixed to the two sides of the forming mold, the sliding frames are slidably installed in the sliding rails, the first circular holes are formed in the upper ends of the sliding frames, the connecting rods are rotationally connected to the middles of the two sliding frames, and the second circular holes are formed in the two sides of the connecting rods; and rotating shafts are rotatably mounted in the first circular hole and the second circular hole, sliding grooves are formed in the two sides of the connecting rod, side plates are slidably mounted in the sliding grooves, connecting plates are fixed to the upper surfaces of the side plates, and the connecting plates and the connecting rod are arranged in parallel. The foam light soil forming device has the advantages that the sliding frame moves in the sliding rail, foam light soil is separated from the forming mold, the surface of the foam light soil is prevented from being damaged, the quality is improved, and the situation that the heat preservation performance is reduced or the decoration effect is poor due to surface defects is avoided.
Owner:福州路信公路设计有限公司

An el-nsm modified soil dry-wet cycle test equipment

ActiveCN224682234USoil scienceTest chamber
The utility model relates to modified soil test technique technical field, concretely is a kind of EL-NSM modified soil dry-wet cycle test equipment, including test case, the inside fixedly connected with support plate of test case, is equipped with support notch on support plate, the inner wall of support notch is inclined from top to bottom and is arranged, and overflow notch is all equipped with on support plate and located the periphery of support notch;Support frame is arranged on support plate, and the outer surface of support frame is inclined and is arranged, and the outer surface of support frame and the inner wall of support notch are matched, the utility model can be watered by permeating micropore when to EL-NSM modified soil dry-wet cycle test, cooperate infrared radiation heating lamp simulation sunlight and dry EL-NSM modified soil, can better simulate the complete cycle of precipitation infiltration into ground in natural environment, obtain more real and reliable test data, avoid EL-NSM modified soil bottom unable to water, cause moisture to accumulate in lower part in soil.
Owner:SHANDONG EXPRESSWAY INFRASTRUCTURE CONSTR CO LTD +1

Multifunctional CRS-K0-BE test consolidometer and test method

The invention discloses a multifunctional CRS-K0-BE test consolidometer and a test method, and relates to the field of geotechnical engineering soil tests, the multifunctional CRS-K0-BE test consolidometer comprises a loading frame, a pressure volume controller, a pressure chamber, an axial stress sensor, an LVDT axial displacement sensor, a lateral stress sensor, a pore pressure sensor, a data acquisition and control device, a bending element base, a bending element top cap and a pressure chamber base A, the device comprises a pressure chamber base A, a pressure chamber base B, a bending element signal acquisition box, a limiting ring, a metal porous stone and an upper computer. The problem that K0 and the wave velocity cannot be measured in the current one-dimensional consolidation test is solved, and the test efficiency is improved.
Owner:NANJING TECH UNIV

Method for improving reliability and accuracy of marine engineering geological survey parameters

The application discloses a method for improving the reliability and accuracy of marine engineering geological survey parameters. The application evaluates and selects seabed soil samples with less disturbance, and constructs a three-dimensional intersection soil test system, combines indoor soil test and in-situ test, combines conventional soil test and advanced soil test, realizes mutual calibration of various measurement values of soil bodies according to the internal relationship between different soil parameters, improves the reliability and accuracy of test results, and solves the problem that the commonly used single linear type geological survey test method is difficult to guarantee the reliability and accuracy of test results.
Owner:NANHAI XIBU PETROLEUM INVESTIGATION DESIGN CO +1

Intelligent indoor compaction test device and use method

The invention discloses an intelligent indoor compaction test device and a use method, and relates to the field of geotechnical test instruments.The intelligent indoor compaction test device comprises a test box body, a mounting bottom plate, a magnetorheological damper, a supporting base plate and a reset spring. The foundation strength under different conditions can be simulated, the unbalance loading influence can be eliminated through the arrangement of the universal ball, the positions of the temperature sensor and the three-axis MEMS accelerometer can be changed through the filler, the temperature of the soil body is detected through the temperature sensor, and the movement data of the sensor tube when the sensor tube receives tamping is detected through the three-axis MEMS accelerometer. The sensor tube can be coupled with a soil body through the arrangement of the external thread grooves, can be conveniently pulled out and reused after a test, and can be spliced through the threaded connection of the external thread grooves and the internal thread grooves.
Owner:SHANDONG LUQIAO GROUP CO LTD +1

Grouting process prediction and optimization control method, device, equipment and medium

The invention belongs to the technical field of grouting, and provides a grouting process prediction and optimization control method, device, equipment and medium, and the method comprises the following steps: obtaining multi-source monitoring data of a transparent soil test device under a simulated crustal stress condition; feature extraction and neural network collaborative response modeling are performed based on multi-source monitoring data, so that collaborative response data of crustal stress-grouting parameter-slurry diffusion-soil deformation are obtained; constructing a three-dimensional dynamic digital twinborn model of the transparent soil grouting process based on the monitoring image and the collaborative response data; performing grouting process digital dynamic simulation and future moment diffusion form prediction on the three-dimensional dynamic digital twinborn model, generating optimization adjustment data of control parameters such as grouting pressure and grouting flow based on a prediction result, and further performing real-time parameter adjustment on a grouting system. And error identification and closed-loop correction are performed in combination with the updated multi-source monitoring data, so that the grouting process prediction accuracy and the grouting control efficiency are improved.
Owner:CENT SOUTH UNIV