1558 results about "Silt" patented technology

The invention discloses a method for determining the lower limit of plugging thickness of a silt rock stratum based on temperature-stress field simulation, which comprises the following steps: judging that the fracture pressure of a shale reservoir is less than the minimum starting pressure of an overlying silt rock stratum, and carrying out the following steps: wrapping the side surface of a roof rock sample with a heat insulation material; arranging heating and stress devices and temperature and strain sensors on the bottom surface of the rock sample, and arranging a plurality of strain sensors on the side surface of the rock sample at set intervals; heating the rock sample by using a heating device until the bottom temperature is the set temperature, applying stress to the bottom of the rock sample from small to large step by step by using a stress device until the set stress, stabilizing the temperature and the stress until the measured values of the sensors are stable, and determining the lowest position where the strain of the rock sample is not higher than the set strain according to the measured values of the sensors; determining the lower limit of top plate plugging thickness according to the distance from the position to the bottom surface; and similarly, determining the bottom plate plugging thickness lower limit. The method can reasonably quantify the lower limit of the plugging thickness of the top and bottom plates of the shale reservoir through joint simulation of the temperature field and the stress field.

The invention relates to the field of solidified soil, and particularly discloses solid-waste-based premixed flow-state solidified soil and a preparation method thereof. The solid-waste-based premixed flow-state solidified soil comprises soil, water and a curing agent according to the weight ratio of (28-36): (50-54): (6-9), according to the total weight of the curing agent, the curing agent comprises the following components in parts by weight: 20-40 parts of fly ash, 30-47 parts of slag, 6-18 parts of silica fume, 10-15 parts of sea sludge, 1-3 parts of a water reducing agent, 1-3 parts of sodium hydroxide, 1-3 parts of calcium sulphoaluminate, 3-10 parts of a fiber reinforced material and 1-3 parts of phosphate. The problems that stress generated by the solidified soil in the hydration process is excessively concentrated and shrinkage is excessive can be solved, and therefore cracking of the solidified soil subjected to premixed flow state solidification is reduced.

The invention provides a river channel dredging operation method, system and equipment and a storage medium, and relates to the technical field of engineering. The method comprises the following steps: acquiring geographical, meteorological and hydrological and silt data of a to-be-dredged river reach and upstream and downstream river reaches, and constructing a full-basin hydrodynamics-silt mathematical model; then, a preliminary dredging scheme is prepared according to operation river reach data, the preliminary dredging scheme is input into the mathematical model for dredging simulation, and the dredging effect and the influence on the downstream river reach are evaluated; and finally, the preliminary scheme is corrected according to the evaluation result, a target dredging operation scheme is obtained, and dredging is carried out. Through the method, the dredging effect and the environmental influence can be more accurately controlled.

The invention discloses a method for determining the plugging thickness of a silt rock stratum based on temperature-pressure field simulation, which comprises the following steps: judging that the fracture pressure of a shale reservoir is smaller than the minimum starting pressure of an overlying silt rock stratum, and carrying out the following steps: wrapping the side surface of a roof rock sample by using a heat insulation sealing material; heating and pressurizing devices and temperature and pressure sensors are arranged on the bottom surface of the rock sample, and a plurality of pressure sensors are arranged on the side surface of the rock sample at set intervals; heating the rock sample by using a heating device until the bottom temperature is the set temperature, pressurizing the rock sample by using a pressurizing device until the bottom pressure is the set pressure, stabilizing the temperature and the pressure until the measured values of the sensors are stable, and determining the lowest position where the pressure of the rock sample is not higher than the second set pressure according to the measured values of the sensors; determining the lower limit of top plate plugging thickness according to the distance from the position to the bottom surface; and similarly, determining the bottom plate plugging thickness lower limit. The method can reasonably quantify the lower limit of the plugging thickness of the top and bottom plates of the shale reservoir through joint simulation of the temperature field and the pressure field.

Disclosed in the present invention is a harbor basin dredging construction method. The method comprises: construction preparation, wherein an antifouling curtain is arranged on the periphery of a construction water area, and a total station is used to survey the construction area; harbor basin dredging, wherein a grab dredger is used for layered excavation, and a hopper barge is used to convey mud to a mud unloading site for discharging; foundation trench and ocean-side inter-pile soil excavation, wherein a pipe head of a suction dredger extends to the ocean-side part of an inter-pile area, and pumps mud and sand to form an ocean-side dredging section; inter-pile soil excavation, wherein a long reach excavator barge is used for inter-pile soil excavation and dredging; shore-side inter-pile soil excavation, wherein a long reach excavator is used for excavation to form a shore-side dredging section; and harbor basin spot dredging, wherein an all-terrain survey is carried out to determine shallow spots and a spot dredging route, and spot dredging is carried out in the harbor basin according to the shallow spots and the spot dredging route so as to ensure dredging depth. The construction method provided in the present invention solves the problem of loss or reduction of dredging results that can be caused by the continuous movement and sedimentation of silt in excavation trenches as well as consequent siltation, thus ensuring dredging effectiveness and saving dredging construction time.

The present invention relates to the technical field of dredging assessment, and in particular to a dredging and repair assessment method, device and dredging and repair robot for drainage pipes. The method comprises the following steps: obtaining a multi-directional image of the interior of a drainage pipe after dredging and a pipe ultrasonic detection signal; performing visual recognition of pipe components and internal geometric structure arrangement analysis on the multi-directional image of the interior of the drainage pipe to construct a three-dimensional pipe panoramic model; performing deep residual sludge recognition on the multi-directional image of the interior of the drainage pipe, and performing sludge spatial distribution analysis to generate residual sludge spatial distribution data; performing reflection deviation compensation optimization on the pipe ultrasonic detection signal, and performing sludge morphology calculation one by one to generate the morphological characteristics of each residual sludge; performing sludge composition characteristic analysis based on the pipe ultrasonic detection signal to obtain the composition characteristics of each residual sludge. The present invention realizes efficient and accurate dredging and repair assessment.

The invention discloses a high-pressure jet grouting pile construction optimization control method and system, and belongs to the technical field of pile foundation construction. According to the method, the pile body strength is predicted based on the XGBoost regression model, the HSIO hybrid swarm intelligent optimization algorithm is combined with the artificial bee colony algorithm and the seathead optimization algorithm, the construction parameter combination is dynamically adjusted, and optimal matching of the target strength and the real-time construction state is achieved. The method solves the problems of parameter setting deviation and non-uniform pile forming quality caused by the fact that traditional construction depends on artificial experience, is particularly suitable for high-precision construction requirements under complex geological conditions (such as karst areas and deep and thick sludge layers), remarkably improves the pile body strength stability, construction efficiency and quality controllability, and reduces the construction cost. And meanwhile, material waste and personal error risks are reduced.

The invention provides a height optimization system for a trailing suction dredger-mounted energy dissipation device. The optimization system comprises a core parameter input module, a loading process simulation and prediction module, a loading efficiency analysis module, a design optimization output module and an automatic height adjustment module. In the construction process, the height of the energy dissipation device can be automatically and accurately adjusted in real time according to different soil texture and different slurry concentration requirements. The energy dissipation device cannot be too low to cause quick settling coarse particle sediment to block an outlet of the energy dissipation device, and cannot be too high to cause cabin entering water flow to disturb sediment to increase overflow loss of suspended sediment. By accurately controlling the height of the energy dissipation device, the construction efficiency of the trailing suction dredger is improved, meanwhile, the adverse effect of loading overflow on the construction water area environment can be reduced, and the engineering application value is achieved. The height of the energy dissipation device can be automatically and flexibly adjusted, and the loading efficiency and the loading flatness of silt in the cabin are improved by reducing overflow loss.

The invention provides a sludge amount measurement method and system based on a reservoir model, and relates to the technical field of hydrographic survey, and the method comprises the steps: obtaining the operation data, basin hydrological data and reservoir topographic data of a target reservoir; based on the operation data, the watershed hydrological data and the reservoir topographic data, establishing a water balance equation and a sediment balance equation; establishing a reservoir model through a water balance equation and a sediment balance equation, and calculating a first predicted distribution quantity of sediment deposition in combination with a dispatching record and a sediment transportation quantity of a target reservoir; calculating a second predicted distribution quantity of the target reservoir at the prediction moment based on the historical sludge distribution quantity of the target reservoir; and if it is determined that the first predicted distribution quantity and the second predicted distribution quantity are within the preset range, determining that the sludge quantity of the target reservoir at the prediction moment is the first predicted distribution quantity. By introducing a coupling mechanism among multiple factors related to reservoir sludge amount prediction, the accuracy of reservoir sludge amount prediction is improved.

The utility model discloses a sand cleaning assembly, which relates to the technical field of sand cleaning equipment and comprises a sand discharging pipe and an adjusting device. The sand discharging pipe comprises an outer pipe and an inner pipe penetrating through the outer pipe, a sand discharging channel is formed between the inner side of the outer pipe and the outer side of the inner pipe, and one end of the inner pipe is externally connected with high-pressure water flow; the adjusting device is used for extending the sand discharging pipe into the tank body or pulling the sand discharging pipe out of the tank body; when the sand removal tank is used, sediments in the tank body are pumped out through the sand removal channel between the outer pipe and the inner pipe, and in order to improve the sand removal efficiency of the tank body, high-pressure water flow is sprayed into the tank body through the inner pipe, so that sand and sludge deposited in the tank body are impacted, the sediments adhered or accumulated in the tank body are dispersed, and the sediments can be conveniently discharged through the sand removal pipe; and the adjusting device can adjust the position of the end part of the sand discharging pipe in the tank body, so that the sand cleaning area is enlarged, and the sand cleaning efficiency and the sand cleaning effect are improved.

The invention discloses a desliming device for mining and beneficiation operation, and relates to the technical field of mineral engineering, in particular to a desliming device for mining and beneficiation operation, which comprises a main machine body, a U-shaped groove is attached and connected to the top of the main machine body, and a flow dividing box is arranged at one end of the main machine body; and a hydrocyclone is arranged between the main machine body and the flow dividing box. According to the desliming device for mining and beneficiation operation, fine separation of minerals with different densities and particle sizes is achieved through stirring of the U-shaped groove, screening of the sieve plate, separation of the hydrocyclone and extrusion of the mesh belt, the desliming quality is improved, finally, final solid-liquid separation is achieved through relative movement and extrusion of the upper mesh belt and the lower mesh belt, and the desliming efficiency is improved. By means of the device, it is ensured that substances in different phase states are separated and treated according to an expected mode, the convenience and the environmental protection property of subsequent treatment are improved, the problem that silt is difficult to clean in traditional equipment is solved through the convenient cleaning mode of all the parts, and the fault risk and secondary pollution caused by silt residues of the equipment are reduced.

The invention provides a drainage pipe network monitoring method and system based on an Internet of Things sensing device, and the method mainly carries out the targeted analysis of a target region, and can achieve the analysis of an in-pipe pressure value and an in-pipe flow velocity value monitored in the target region through the arrangement of the Internet of Things sensing device. When it is monitored that a large amount of sludge appears in the target area, the influence of the sludge on the target area can be tracked and judged, so that the drainage pipe network is accurately recognized and monitored, the sludge state in the drainage pipe network is found in time, and the drainage pipe network can be prevented from being blocked by a large amount of sludge.

The invention discloses a ten-thousand-square-meter muddy deep foundation pit supporting structure deformation prediction method which comprises the following steps: establishing a soil-supporting interaction rheological model, simulating stress relaxation and creep effects of muddy soil in combination with a Burgers rheological model, and realizing dynamic evolution prediction of a supporting structure deformation field and an internal force field. According to the method, the particle filter algorithm is adopted to carry out denoising processing on real-time monitoring data, model parameters are updated through the Bayesian method, and the prediction precision is improved. Meanwhile, nonlinear mapping of the deformation rate and the internal force increment is established by using a random forest algorithm, and instability risk probability distribution is generated. According to the method, multi-stage collapse early warning thresholds are set, monitoring data and prediction results are fused by adopting a weighted average method, and abnormal points of a high-risk area are identified. For a high-risk area, a genetic algorithm is applied to optimize the rigidity and prestress distribution of a supporting system, effective control over deformation and internal force of a supporting structure is achieved by dynamically adjusting construction parameters, and construction safety of the deep foundation pit is ensured.

The invention provides an immersed tube tunnel underwater slope protection silting prevention system and a construction method thereof.The immersed tube tunnel underwater slope protection silting prevention system comprises a foundation trench, a side slope is arranged in the foundation trench, the immersed tube tunnel underwater slope protection silting prevention system comprises a plurality of blocking units, each blocking unit comprises a silting prevention plate and a plurality of limiting pipes, and the limiting pipes are arranged on the side slope. The silt prevention plate is laid on the side slope, a plurality of accumulation channels penetrating in the vertical direction are formed in the silt prevention plate, and the accumulation channels are used for collecting silt; the multiple limiting pipes are inserted into the side slope in the vertical direction and connected with the silt prevention plate. According to the immersed tube tunnel underwater slope protection siltation prevention system, silt in water flow is intercepted through the accumulation channel on the siltation prevention plate, when the silt falls onto the siltation prevention plate, the silt can be deposited in the accumulation channel, the deposited silt and a soil body embedded in the accumulation channel are fused into a whole, the siltation prevention plate can be reversely fixed, the stability of a side slope is protected, and the service life of the side slope is prolonged. The sludge utilization rate is improved.

The invention relates to an integrated experimental system and method for simulating sand production-sand prevention of an argillaceous silt hydrate reservoir, and the system comprises a reservoir sand production / mechanical property evaluation simulation device which comprises a heat exchange chamber and a high-pressure reaction kettle arranged in the heat exchange chamber, and the high-pressure reaction kettle is internally provided with a core holder; the gas displacement and control device is connected with the reservoir sand production / mechanical property evaluation simulation device; the confining pressure loading device is connected with the high-permeability confining pressure layer in the reservoir sand production / mechanical property evaluation simulation device and is used for simulating the confining pressure environment outside the reservoir core sample; the liquid displacement and control device is connected with the high-pressure reaction kettle and is used for providing liquid displacement conditions for the reservoir core sample; the gas-liquid-solid separation device is connected with the high-pressure reaction kettle and is used for separating a gas-liquid-solid mixture; the visual sand prevention simulation device for the screen pipe unit comprises a visual acrylic pipe, and the data acquisition device is used for acquiring and processing data of the sand prevention experiment of the visual acrylic pipe.

The invention relates to the field of pole tower pile foundation protection, and discloses a replaceable pole tower concrete pile foundation protection device which comprises a pole tower pile foundation embedded in underwater sludge; the foundation pit is arranged on the underwater sludge, the depth of the foundation pit reaches the middle position of the tower pile foundation base, and the foundation pit is filled with broken stones to form a broken stone hardcore; the mounting plates are arranged on the pole tower pile foundation; the protection plate is arranged on the mounting plate and is rotatably arranged on the mounting plate; and the protection plates can automatically rotate according to the strength and direction of water flow, and are matched with the anchoring effect of the inserting rods, so that the gravel hardcore is effectively stabilized, the gravel layer is prevented from being lost, and the stability and anti-scouring capacity of the pile foundation are further enhanced. Through the design of the clearing rod, sediments on the outer wall of the tower pile foundation can be regularly cleared away, unsmooth water flow or uneven scouring caused by sediment accumulation is avoided, and the situation that the service life of the pile foundation is shortened due to biological corrosion is prevented. And through the effective sliding and scraping effects of the removing rod, the corrosion influence of attachments on the pile foundation can be reduced, and smooth water flow is ensured.

The invention provides a composite tension sand blocking and silt reducing facility and method.The facility is composed of one or more units, each unit comprises a floating body, a composite tension curtain and an anchor point located at the bottom of a water body, one end of the composite tension curtain is connected to the floating body, and the other end of the composite tension curtain is connected to the anchor point; the composite tension curtain forms a sand blocking surface in the water between the bottom of the water body and the floating body by virtue of the buoyancy of the floating body, and the floating body is positioned on the water surface or suspended in the water; the composite tension curtain is formed by sewing two layers of geotechnical cloth together, a plurality of steel cables are inserted between the two layers of geotechnical cloth, a composite tension structure is formed to serve as a sand blocking and silt reducing curtain face, and main water flow force and wave force are borne by the steel cables. The flexible sand blocking curtain structure facility is economical, convenient to construct, suitable for large flow velocity and wave conditions and capable of blocking sand and reducing silt.

The invention discloses a measuring device and a measuring method for field runoff plot soil erosion monitoring, the device comprises a sediment measuring device, a water measuring device and a protective cover, the sediment measuring device realizes sediment filtration and weight measurement through a filter funnel and a scale, and the water measuring device accurately calculates the water amount by using a double-tipping-bucket container and a sensor. The protection cover ensures that runoff accurately enters the device. The device is also provided with a horizontal test system to ensure the measurement accuracy. The measuring method comprises two steps of preparation before work and a working process, specifically, firstly, a proper position is selected to place the device and leveled, then silt and water generated in a runoff plot are monitored, the silt is separated through the filtering funnel, the weight is measured, meanwhile, the water amount is calculated through the double-tipping-bucket container and the sensor, and finally flowing water is guided out through the drainage system, so that monitoring is completed. The device is compact in structure and simple and convenient to operate, can accurately monitor the soil erosion condition of the field runoff plot in real time, and provides powerful support for water and soil conservation and ecological environment research.

The invention relates to the technical field of bank slope erosion and deposition monitoring, and discloses wharf bank slope erosion and deposition monitoring equipment and an identification method. The sonar depth finder is installed at the top of the outer wall of the supporting column and used for detecting the water level depth; the water flow Doppler velocimeter is installed at the bottom of the outer wall of the supporting column and used for detecting the flow speed and the flow direction of water flow; the sensor group is mounted in the middle of the outer wall of the support column and is used for detecting the temperature, turbidity and salinity of the water flow; and the controller is mounted at the inner top of the supporting column and is used for receiving and calculating information of the sensor group, the sonar depth finder and the water flow Doppler velocimeter. By detecting the water depth, the water flow speed, the water flow direction, the water temperature, the turbidity and parameters, the controller receives, preprocesses, calculates and analyzes information, and therefore real-time monitoring of the water area state is achieved, scour and siltation areas are accurately predicted, early warning is given out in time, decision support is provided, and the safety and maintenance efficiency of bank slope facilities are improved.

The invention discloses a comprehensive detection processing and analysis method and system for a deep foundation trench of an immersed tunnel, and relates to the technical field of data processing, and the method comprises the steps: firstly carrying out the acoustic calibration of a multi-beam array in a foundation trench region, and compensating a beam incident angle and echo delay, so as to eliminate systematic sounding errors; then macroscopically scanning the foundation trench based on the corrected sounding equipment to generate a high-resolution three-dimensional point cloud, identifying abnormal elevation change in real time and dynamically adjusting the dredging depth; then multi-frequency acoustic detection is carried out on the silt sediment, a float sludge thickness cloud picture is drawn to evaluate a loose structure, and targeted compensation is carried out; finally, the topographic form and the sediment structure change are jointly used for construction early warning, a closed-loop system from precision calibration to anomaly detection to physical property diagnosis and risk early warning is formed, the precision and integrity of foundation trench depth measurement and sludge monitoring are remarkably improved, potential risks can be found and corrected in time in construction, and the construction efficiency is improved. And the construction safety and efficiency of the immersed tunnel deep foundation trench are guaranteed.

The invention belongs to the technical field of foundation treatment, and particularly relates to a silt geology prefabricated solidified soil pile composite foundation treatment device and a construction method, the silt geology prefabricated solidified soil pile composite foundation treatment device comprises a pile driver and a vibratory hammer, the vibratory hammer is arranged at one end of the pile driver, and the silt geology prefabricated solidified soil pile composite foundation treatment device further comprises a connecting device and a clamping device which are installed on the outer surface of the vibratory hammer. According to the sludge geology prefabricated solidified soil pile composite foundation treatment device and the construction method, by arranging an inner clamping mechanism, the inner wall of a guide pipe can be automatically attached to complete clamping of the guide pipe, and an inner clamping plate can be conveniently limited through a groove of a limiting sleeve, so that the inner clamping plate can move along the track of the groove of the limiting sleeve; the inner clamping plate can be driven to move through rotation of the driving screw rod, and the groove of the limiting sleeve can be inserted through movement of the clamping plate, so that after the inner clamping plate rotates, the inner clamping plate faces downwards, and the driving screw rod rotates reversely, the inner clamping plate does not rotate backwards but moves backwards, and the inner wall of the guide pipe can be clamped conveniently.

The utility model discloses a desilting device for maintenance and cleaning of wetland ecological environment, which comprises a support, a baffle arranged above the support and a processing assembly arranged outside the baffle, when sludge needs to be cleaned, a conveying belt is placed at a cleaning position, a motor is started, a rotating rod fixedly mounted at the output end of the motor starts to rotate, and the conveying belt and the processing assembly are driven to rotate. Under the support of a baffle, a rotating rod enables a conveying belt arranged on the outer wall of the rotating rod in a sleeving mode to start to rotate, a conveying plate fixedly installed on the outer wall of the conveying belt rotates along with the conveying belt, the rotating conveying plate conveys sludge to achieve the dredging effect, and when the conveying plate is used for dredging, the sludge is prone to being attached to the outer wall of the conveying plate and needs to be cleaned; when a scraper sleeving the outer wall of the conveying plate moves towards the inclined plate, a sliding column fixedly mounted on the outer wall of the scraper makes contact with and extrudes the outer wall of the inclined plate, the sliding column drives the scraper to slide on the outer wall of the conveying plate, a second magnetic block fixedly mounted on the inner wall of the scraper slides in a sliding groove formed in the outer wall of the conveying plate, and the scraper cleans sludge attached to the outer wall of the conveying plate.

The invention discloses a red sandstone foundation pit drainage structure and a construction method thereof, and relates to the technical field of foundation pit drainage, the red sandstone foundation pit drainage structure comprises a buoyancy assembly, a water suction pump, an electromagnetic three-way valve and two sediment filtering assemblies, and the two sediment filtering assemblies are controlled by the electromagnetic three-way valve to alternately work; the silt filtering assembly in a working state is used for filtering silt, and the silt filtering assembly in an idle state is used for precipitating and collecting the intercepted silt. Alternate work of the two sediment filtering assemblies is achieved through the electromagnetic three-way valve, drainage continuity is guaranteed, the idle time of the sediment filtering assemblies is effectively utilized for sediment collection, and the situation that efficiency is reduced due to frequent cleaning of a traditional single filtering system is avoided; and the cleaned silt is independently collected, and does not enter the raw water body to cause the increase of the silt concentration and influence the subsequent drainage.

The invention discloses a tunnel base soil body active drainage system device and method based on drainage nails, and relates to the technical field of tunnel construction. The device comprises capillary adsorption tube wells, side ditches and a pumping drainage device, the capillary adsorption tube wells are arranged on the two sides of the bottom of a tunnel, and the multiple capillary adsorption tube wells are arranged in the longitudinal direction of the tunnel; each capillary adsorption tube well is arranged in the vertical direction and extends into a base soil body below a tunnel bottom, each capillary adsorption tube well comprises a waterproof tube section, a water seepage tube section and a bottom precipitation tube section which are sequentially arranged, and every two adjacent tube sections are connected through a plugging connector. The side ditches are arranged on the two sides of the railway ballast and used for gathering and discharging water in the capillary adsorption tube wells. And the pumping and draining device is used for pumping and draining water in the capillary adsorption tube well into the side ditch. A natural filter layer can be formed under the capillary action of the water seepage pipe section, silt is effectively prevented from inrush, and therefore the method is suitable for long-term water pumping and drainage construction in the heavy haul railway base operation period, and frequent pipe well cleaning does not need to be carried out.

The invention belongs to the technical field of geotechnical engineering sludge solidification, and particularly relates to an integrated test system and method for solidifying and repairing polluted bottom mud through vacuum electroosmosis. According to the method, the change of the water content and the electric conductivity of the polluted bottom mud in the electroosmosis treatment process can be monitored in real time, and the change of the pollution concentration of the polluted bottom mud can be calculated in real time according to the change of the water content and the electric conductivity, so that the problems that a traditional test method needs sampling detection, steps are tedious and a result cannot be obtained in real time are solved; no special equipment is needed for measuring the concentration and the moisture content of the pollutants, so that the cost is saved; pollutants in the polluted bottom mud are discharged into the water collecting assembly along with sewage, so that the decontamination effect is ensured; the polluted bottom mud in the mud inlet assembly is sucked into the vacuum container through the negative pressure assembly, so that the uniformity of the polluted bottom mud is ensured; along with the proceeding of the test, the vacuum container compresses the polluted bottom mud, so that the vacuum electroosmosis dehydration and decontamination process is accelerated.

The invention belongs to the technical field of geotechnical engineering field test, and particularly relates to a shallow silty clay stratum classification method based on a CPTU field penetration test, which comprises the following steps: utilizing the CPTU field penetration test, correcting a conical tip resistance model and combining a normalized friction ratio model; the vertical stress of the overlying soil layer, the effective vertical stress of the overlying soil layer and the atmospheric pressure are introduced, and a normalized conical tip resistance model is obtained; then, based on boundary conditions such as a soil body type index and silty clay stratum thickness, an existing correction coefficient is optimized, and the normalized conical tip resistance model is further corrected; and finally, substituting the normalized friction ratio model and the corrected normalized conical tip resistance model into the soil body type index model to obtain a corrected soil body type index model for dividing the shallow soil body. According to the scheme, the method can more accurately meet the requirement for soil body classification, can meet the requirement for distinguishing silty clay, silty soil and silty sand, and has the advantages of being rapid, simple, high in test result reliability and the like.

The invention relates to the technical field of water conservancy water quality sampling, in particular to water conservancy water quality sampling equipment which comprises a sampling barrel, water inlets are formed in the outer wall of the sampling barrel in a circular array mode, inner cover plates are installed in the water inlets in a hinged mode, a water outlet pipe is arranged on the lower side of the sampling barrel, and the outer end of the water outlet pipe is connected with a sealing cover through threads; a bracket is arranged at the upper end of the sampling barrel, a fixed seat is arranged at the upper end of the bracket, and a plurality of groups of top cover plates are rotationally mounted on the outer side of the fixed seat. By arranging a trigger rod, when the trigger rod makes contact with the water bottom, the trigger rod can be stressed to trigger a limiting assembly to be opened, then a springback assembly drives a sleeve cover to ascend, a rubber film is reset through elasticity of the rubber film, negative pressure is generated in a bottom bin, and therefore the suction head making contact with sediment at the water bottom can suck sediment at the water bottom; sediment can be sucked into the bottom bin through the sampling barrel and the through hole, and compared with the mode that water and sediment are separately sampled through different devices, convenience is achieved, and time and cost are saved.

The invention discloses transparent soil with high transparency and high similarity with natural soil and a preparation method of the transparent soil. The transparent soil comprises transparent particles, transparent pore liquid and an additive. The refractive indexes of the transparent particles and the transparent pore liquid are consistent, and the contact infiltration characteristic of the particle surfaces and the liquid is improved through the surfactant, so that the transparent soil with higher transparency, such as sandy soil, clay and floury soil, is obtained. Hydrophilic fumed silica is matched with polar pore liquid or hydrophobic fumed silica is matched with non-polar pore liquid to prepare high-strength transparent clay or silt with mechanical properties highly similar to those of natural clay or silt. According to the invention, the clay or silt consolidation time can be greatly shortened. The transparent soil with high transparency and high similarity with natural soil can improve the geometric dimension of a transparent soil model, reduce the dimension difference between a model test and a real engineering problem, and provide a more excellent method for researching various geotechnical geological engineering problems.

The invention provides a reservoir area sluice gate silt disturbance ecological device, which relates to the technical field of water conservancy projects, and comprises a guide mechanism, an ecological mechanism and a silt disturbance mechanism, the ecological mechanism is mounted on the front side of the guide mechanism; a control box is mounted on the left side of the ecological mechanism; three rows of silt disturbance mechanisms are arranged, and the three rows of silt disturbance mechanisms are installed at the bottom of the ecological mechanism. The mounting sliding block is mounted in the linear sliding rail in a sliding manner; the circular driving block is rotationally mounted in the mounting sliding block, and two storage grooves are formed in the outer wall of the circular driving block; microbial agents in the rectangular shell intermittently drip through the five rows of adding micropores, the water quality of the reservoir can be effectively improved, it is guaranteed that the water quality of the reservoir reaches the standard, and therefore the ecological environment of the reservoir is protected and improved; the problems that when silt is disturbed, microbial agents cannot be automatically put, and the ecological environment of a reservoir cannot be improved in an auxiliary mode are solved.

The invention relates to the technical field of sediment sampling, and discloses a riverway water environment treatment lifting device which comprises a fixing frame, sliding rails are arranged in the top end and the bottom end of the fixing frame, sampling assemblies used for collecting sediment are arranged in the sliding rails, each sampling assembly comprises a bottom supporting column, the bottom supporting columns are slidably connected with the sliding rails, and the bottom supporting columns are connected with the sliding rails. The river channel water environment treatment lifting device comprises a bottom supporting column, a supporting rod is fixed to the top of the bottom supporting column, a sampling barrel is fixed to the top of the supporting rod, and connecting blocks are fixed to the surfaces of the two sides of the sampling barrel. Water flow is limited through the appearance of the conical pipe, so that the water body shunted by the filter screen is converged again, and a certain flow speed is maintained to carry silt into the sampling barrel, so that the silt sampling accuracy is improved, and the water environment treatment efficiency is effectively improved.