488 results about "Solum" patented technology

The invention discloses a farmland environment multi-parameter intelligent monitoring system and method based on Internet of Things, particularly relates to the technical field of agricultural Internet of Things monitoring, and is used for solving the problem of stress resistance evaluation distortion caused by neglecting crop physiological recovery hysteresis in the prior art. Collecting soil water content data in real time through an Internet of Things sensor, and extracting a soil water content change rate when a preset threshold value is reached; secondly, constructing a space-time gradient matrix based on different soil layer water deficit rates, and generating a stress cumulative intensity index through principal component analysis and information entropy fusion; then analyzing a coupling relationship between the soil moisture change rate and the stress accumulation effect in the historical stress event on physiological recovery delay to generate a recovery delay coefficient; the physiological state lag degree is evaluated by combining the stomatal conductance change rate ratio of the stress period and the recovery period and the recovery delay coefficient; and finally, dynamically prolonging the irrigation execution time according to the lag degree until the irrigation execution time is lower than a set tolerance value, thereby remarkably improving the reliability of crop stress resistance test data.

The invention relates to the technical field of alpine sand soil moisture leakage estimation technologies, and particularly discloses an alpine sand soil moisture leakage estimation method which comprises the following steps: S1, multi-source data acquisition: acquiring 0-110cm layered soil moisture content and temperature data by using a cold-resistant soil hydrothermal sensor array, and calculating the moisture content and temperature data of the layered soil; synchronously acquiring Sentinel-2 remote sensing data to extract vegetation coverage and land surface temperature, and recording regional freezing and thawing cycle times and biological crust coverage types; s2, key parameter inversion: calculating a permeability coefficient correction factor kFTC = alpha * N (1 / 2) through a multi-expression programming model based on the freezing and thawing cycle number N. According to the method for estimating the soil moisture leakage amount of the high and cold sand land, the limitation of a traditional model based on steady-state water flow and empirical parameters is broken through by quantifying the dynamic effect of freezing and thawing cycles on the porosity of a 30-80 mm soil layer and the water blocking effect of 23.41%-30.39% when the biological crust coverage degree exceeds 30%; and the influence of the low-temperature freezing and thawing cycle and the biological crust on the leakage mechanism of the high and cold sand land is accurately depicted.

The invention discloses a cross-medium transmission simulation device and method for pollutants between soil and underground water, and relates to the technical field of environmental governance, and the cross-medium transmission simulation device for pollutants between soil and underground water comprises a soil layer system and an underground water system. The soil layer system comprises a base and a soil box arranged on the base in the vertical direction, the soil box is used for containing test soil, and the base is provided with a first water permeable hole used for being communicated with the soil box. The underground water system comprises a water tank, a mounting opening is formed in the upper side of the water tank and used for allowing the base and the soil box to sequentially penetrate through, and the height of the inner side of the water tank is larger than that of the base so that water in the water tank can penetrate through the first water permeable holes and make contact with a soil layer in the soil box. By comparing the content of the pollutants at the same position, the blocking effect of the blocking agent on the pollutants can be evaluated, and the blocking effect of the blocking agent during cross-medium transmission of the pollutants between the soil and the underground water can be evaluated on the whole.

The invention relates to the field of geological exploration equipment, in particular to a geological exploration drilling machine for architectural design. Existing equipment is easy to fracture a soil core sample, and is easy to cause soil layer sequence disorder, so that the detection accuracy is influenced. A geological exploration drilling machine for building design comprises a movable chassis, a rotating frame installed on the movable chassis, a hydraulic push rod fixedly connected to the rotating frame and a lower moving plate fixedly connected to the hydraulic push rod. When the soil sampler is used, the five soil sampling cylinders are pushed to move by the five push rods when the push rod frame moves, the five soil sampling cylinders are pushed out of the soil sampler by the five push rods of the push rod frame, a worker pushes soil cores in the five soil sampling cylinders out of the soil sampling cylinders and sequentially puts the pushed-out soil cores into the storage box, and the soil cores can be taken out in sections, so that the taken-out soil cores are more complete; therefore, the soil core detection is more accurate.

The invention belongs to the technical field of soil sampling, particularly relates to a river dam soil sampling device for intelligent water conservancy, and aims to solve the problems that traditional equipment can only obtain samples with single depth through single-time drilling, different soil layers can only be collected through repeated drilling, the efficiency is low, soil layer structures are damaged, and an effective isolation mechanism is lacked. In order to solve the problems in the prior art that soil at different depths is easy to mix in the collection or extraction process, and the detection accuracy is influenced, the invention provides the following scheme: the device comprises a disc ring, and three finger grooves are formed in the outer side of the disc ring; and the three supporting leg positioning structures are uniformly mounted at the bottom of the disc ring. Through cooperation design of the rotary sampling cylinder and the sampling hole, the precise 60-degree indexing rotary locking handle and the bottom sealing structure of the integrated drill bit, soil of different depths can be collected, the collected soil can be prevented from being mixed, the stability of the sampling process is ensured through three-point synchronous propulsion, and the sampling efficiency is improved. And the deployment of the river dam is simplified through the magnetic foot-stepping positioning insertion rods.

The invention discloses an acidity and pressure dual-mode termite nest positioning method and equipment, and relates to the biological control, termite nest positioning and data processing technology, and the method comprises the steps: controlling a device with a drill rod, and carrying out the downward drilling at a designated position; soil acid and bit pressure are obtained in the drilling process; according to the obtained soil acidity and bit pressure, a fractional order differential model is established, and the accumulation of termite nest formation and environmental action is analyzed through the fractional order differential model; and outputting the probability of existence of the termite nest in the specified position according to the fractional order differential model. According to the embodiment of the invention, the acidity volatility is deeply measured through minimally invasive drilling, the existence and the specific position of the main nest are further judged, and whether a hole exists in the soil layer or not is judged by combining the change of drilling pressure (push rod force) in the soil penetrating process.

The invention relates to the technical field of forest fertilization, in particular to a forest precise fertilization decision-making method and system based on soil nutrient profit and loss, and the method comprises the steps: obtaining basic information of a target forest land, and dividing forest growth stages based on the basic information; the method comprises the following steps: collecting an undisturbed soil sample and a mixed soil sample of a 0-40cm soil layer of a target forest land by adopting an S-shaped point distribution method, separating the mixed soil sample, and respectively measuring the soil nutrient content, the bioavailability, the soil enzyme activity and the microbial functional gene. According to the method, by measuring the dimension indexes, constructing a five-dimensional profit and loss evaluation index system for determining the reference value and dynamically adjusting the weight according to the forest land data, calculating the comprehensive profit and loss index, judging the nutrient state and generating the personalized fertilization scheme, the defects that an existing fertilization scheme is single in basis index and lacks an effective dynamic adjustment link are effectively overcome; the requirements of multi-generation continuous planting forest land are met, and the environmental risks such as fertilizer waste, soil acidification and water eutrophication are effectively reduced.

The utility model relates to the technical field of geological survey, and provides a layered soil sampling device for geological survey, which comprises a fixing ring, a plurality of fixing components are arranged at the bottom end of the fixing ring and used for fixing the fixing ring, and the fixing components are annularly arrayed at the bottom end of the fixing ring and used for fixing the fixing ring. A soil sampling assembly is arranged on the inner side of the fixing ring and used for drilling soil, a transmission assembly is arranged at the upper end of the soil sampling assembly and used for transmitting the soil sampling assembly, the fixing assembly comprises a fixing rod fixedly connected to the outer wall of the bottom end of the fixing ring, and an anchoring rod is fixedly connected to the outer wall of the bottom end of the fixing rod. When the device is used for sampling soil layer by layer, the first soil sampling half cylinder and the second soil sampling half cylinder are separated, layered soil is taken out, the situation that wet soft soil pollutes other soil layers in the extrusion process is reduced, the sampling efficiency of the device is improved, and therefore the purity of a sample is improved.

The application relates to a suction cylinder sinking resistance calculation method and relates to the technical field of suction cylinder foundation construction, which comprises the following steps: calculating the clay content index of a clay-sand mixed soil layer by using a pore pressure static sounding test structure; calculating the upper limit value of the side resistance coefficient of the suction cylinder, the lower limit value of the side resistance coefficient of the suction cylinder, the upper limit value of the end resistance coefficient of the suction cylinder and the lower limit value of the end resistance coefficient of the suction cylinder according to the clay content index; and calculating the first sinking resistance based on the above resistance coefficients and by using a formula. The application establishes a suction cylinder sinking resistance calculation method for the clay-sand mixed soil layer, clearly defines the quantitative relationship between the clay content index of the clay-sand mixed soil layer and the sinking resistance coefficient (including the end resistance coefficient and the side resistance coefficient), solves the problem that the calculation parameters of the suction cylinder sinking resistance in the clay-sand mixed soil layer are not clear in the existing norms, and improves the accuracy of the sinking resistance calculation result.

The invention belongs to the technical field of shield tunnel construction, and discloses a shield tunnel deformation overrun correction pile group and a correction method. The correcting method comprises the following steps that (1) a high-pressure jet grouting method is adopted, grouting is conducted on a soil layer outside a single segment with deformation exceeding the limit to form a pile column on the outer circle face of the segment, the grouting pressure in the grouting process acts on the segment through the soil layer outside the segment, and therefore correcting pressure for correcting deformation of the segment with deformation exceeding the limit is generated; the correction pressure acting on the duct piece is adjusted by adjusting the grouting pressure and / or the slurry return pressure; and (2) the step (1) is repeated till correction of all the segments, with deformation exceeding the limit, of the shield tunnel is completed. The radial piles are formed on the outer side of the tunnel through the high-pressure jet grouting technology, the soil property around the tunnel is improved, meanwhile, the size of the correction force is controlled by controlling the slurry return pressure in the jet grouting process, accurate correction of the deformation over-limit shield tunnel is achieved, and the operation safety of the shield tunnel is effectively guaranteed.

The invention relates to the technical field of soil physical parameter in-situ measurement, and discloses a soil layer natural water content portable intelligent measuring instrument based on multi-source sensing fusion, which comprises a composite probe assembly and an intelligent measurement and control host which are physically connected, the composite probe assembly is configured to be inserted into a soil layer to be tested to construct a multi-physical field test environment, and an electrical transceiving unit and an acoustic transceiving unit are integrated in the composite probe assembly. By constructing a cross physical field excitation and multiphase parameter collaborative decoupling mechanism, a multidimensional dynamic correlation model is established by using the thermosensitive drift characteristic of the sound velocity of a mixed medium during thermal disturbance and the transient step response of a dielectric constant under an acoustic radiation force field; the problems that the coupling influence of the water content and the volume weight cannot be distinguished and the conductivity of bound water and the conductivity of free water are difficult to separate in a traditional means are effectively solved, and four independent physical quantities including the volumetric water content, the in-situ dry volume weight, the bound water content and the actual conductivity of pore water are synchronously inverted through a single probe. And the decoupling precision of the equipment on complex multi-phase soil medium parameters is improved.

The invention relates to the field of deep horizontal displacement monitoring, and provides a deep horizontal displacement correction method and system based on the starting depth of an inclinometer. The method for correcting the deep horizontal displacement based on the starting depth of the inclinometer comprises the following steps: if the starting depth is the bottom of the inclinometer, calculating a first difference value between the corrected deep horizontal displacement at the orifice of the inclinometer and the absolute value of the horizontal displacement at the orifice of the inclinometer; if the starting depth is not equal to the bottom of the inclinometer tube, calculating a second difference value between the corrected horizontal displacement of the deep layer at the bottom of the inclinometer tube and the absolute value of the horizontal displacement at the bottom of the inclinometer tube; distributing the first difference value or the second difference value to each soil layer according to the reciprocal of the shear strength to obtain a first distribution error; determining a second distribution error of each monitoring point of each soil layer according to the number of the monitoring points contained in each soil layer; and obtaining a final displacement absolute value of each monitoring point according to the corrected deep horizontal displacement of each monitoring point. And the accuracy of deep horizontal displacement is improved.

The invention relates to the technical field of forestry data processing, in particular to a landscaping maintenance system and method based on big data, and the system comprises a water potential monitoring module, a block division module, a pruning adjustment module, a man-hour scheduling module and an anomaly recognition module. According to the method, by tracking the consistency of soil moisture fluctuation in real time, accurately analyzing the dynamic influence of the root system type and the soil layer structure on water absorption and combining plant evapotranspiration physiological indexes and meteorological condition differences to finely divide water demand grades, efficient matching of water supply and plant physiological statuses is achieved; the pruning period is dynamically adjusted according to the actual change of plant photosynthesis and tissue expansion, the coordination error between maintenance working hour calculation and geographic path planning is effectively reduced, the continuity and timeliness of illumination change abnormal response recognition are improved, the accuracy and refinement level of garden plant maintenance decision making are remarkably improved, and the method is suitable for popularization and application. And the scientific decision-making capability, the space adaptive capability and the intelligent response level of greening maintenance management are improved.

The utility model relates to the technical field of water and soil conservation, and particularly discloses an ecological slope protection water and soil conservation device. Comprising grating blocks arranged on the surface of a soil layer of the ecological slope protection, the adjacent grating blocks are connected through mortise and tenon joint structures, and a plant protection area is formed in a central grating groove of each grating block; and the separating and positioning assembly is arranged in the soil layer on the lower side of the grating block, vertically penetrates through the slope protection floating soil layer and extends to the bearing layer. Through the arrangement of the grating blocks, the adjacent grating blocks are spliced through mortise and tenon joint structures, and an integral protective layer is formed on the surface soil layer of the ecological slope protection. And through the arrangement of the separating and positioning assemblies, the lower soil body can be divided into independent units, and the independent units are matched with the upper grating blocks to form a three-dimensional water and soil conservation frame, so that the overall stability of the slope protection is enhanced, and local water and soil loss and diffusion are prevented. The problems that a traditional slope protection structure is poor in synergistic protection effect and continuous water and soil conservation function, and interlayer slippage is likely to be generated under the long-term dry-wet cycle effect are solved.

The invention discloses a tea garden soil moisture physical simulation and data driving fusion prediction method and device, and relates to the field of soil moisture prediction.The method comprises the steps that based on soil basic attributes and multi-depth soil moisture time sequence observation data, a soil moisture physical baseline sequence is obtained in combination with boundary conditions and initial conditions; respectively extracting data of a target soil layer in a preset time window from the soil water content physical baseline sequence, the multi-source driving data and the multi-depth soil water content time sequence observation data so as to splice the data into an input feature set; obtaining a water content prediction value of the target soil layer on the prediction day based on the input feature set and a preset soil water content prediction model; according to the method, the HYDRUS-1D simulation result is taken as a baseline, the time sequence dependence of soil moisture, especially the lag response of different soil layers, is effectively learned, and the modeling capability of a complex nonlinear relationship is improved.

The invention discloses a flexible pile composite foundation optimization design method suitable for stratified stratums, which comprises the following steps: S1, acquiring calculation parameters of a to-be-designed area, including soil modulus; s2, calculating the composite modulus of each soil layer in a reinforcement area of the to-be-designed area through the calculation parameters; s3, calculating the vertical additional stress of the natural foundation through the soil modulus; calculating the vertical additional stress of the composite foundation through the soil modulus obtained in the step S1 and the composite modulus obtained in the step S2; calculating vertical additional stress coefficients at different depths of the to-be-designed region according to the transfer matrix; s4, calculating the vertical settlement amount of the composite foundation by adopting a layered summation method; s5, calculating the permissible bearing capacity of the natural foundation through the vertical additional stress coefficient obtained in the S3 and the permissible bearing capacity of the layer of soil; and S6, calculating the allowable bearing capacity of the composite foundation based on related specifications of the foundation and the allowable bearing capacity of the natural foundation. The method is high in implementability, and calculation errors caused by different moduli adopted by different calculation methods are avoided.

The invention relates to the technical field of data processing, and discloses a deep foundation pit monitoring data acquisition method and system. The method comprises the following steps: arranging sensors according to three depth levels of a pit top, a pit wall and a pit bottom of the deep foundation pit to obtain grouped data; calculating foundation pit deformation gradient, supporting structure stress, soil layer stability and underground water seepage parameters, and extracting space weight data; adopting a deep foundation pit space layering Gaussian hybrid clustering algorithm to screen representative monitoring sensors; inputting representative sensor data into the deep foundation pit long short-term memory network to predict foundation pit deformation; and dynamically adjusting the monitoring data acquisition frequency through game theory weight distribution and cloud model evaluation, and generating a data acquisition control instruction. The technical problems that in deep foundation pit monitoring, the data collection efficiency is low, representative sensor selection lacks scientific basis, and misjudgment is prone to occurring in single-index early warning are solved, and the intelligent level and prediction precision of deep foundation pit monitoring data collection are improved.

The invention relates to the technical field of tunnel freezing engineering monitoring, in particular to a frozen wall online monitoring method and system for tunnel freezing engineering. Temperature time sequence data of all freezing pipe monitoring points are obtained, the soil layer loosening degree and freezing interference indexes are quantified through the temperature difference, amplitude trend and fluctuation characteristics of the monitoring points, the two indexes are further combined with position distribution of the freezing pipe monitoring points, and the freezing liquid demand index of all freezing pipes is determined; dynamically adjusting the refrigerating fluid correction value according to the refrigerating fluid demand index to match the actual cooling capacity demand; analyzing a disordered index of the correction value of the freezing liquid of each freezing pipe through a time sequence (calculating a conveying pause evaluation index; if the evaluation index exceeds the limit, circulation of the low-demand freezing pipe is suspended, the high-demand freezing pipe runs according to the correction value, and otherwise, dynamic adjustment of the whole pipe is maintained. According to the method, soil layer characteristics and interference factors are quantified through multi-parameter coupling, precise adaptation of cooling capacity supply is achieved, and the uniformity of the frozen wall is effectively controlled.

The invention relates to a construction method of an offshore sludge solidified soil-riprap mixed anti-scouring structure, the anti-scouring protection structure sequentially comprises a riprap layer, a high-fluidity strong-compactness flow state solidified soil layer and a low-fluidity high-strength flow state solidified soil layer from bottom to top, and the anti-scouring protection structure is formed by sequentially filling during construction; the riprap layer is poured into the scouring pit by a certain depth, the high-flowability and high-density flow state solidified soil is formed through self-leveling pouring based on the riprap layer, and the low-flowability and high-strength flow state solidified soil layer is formed through self-leveling pouring based on the high-flowability and high-density flow state solidified soil. According to the invention, the riprap layer is combined with the high-flowability strong-compactness flow-state solidified soil and the low-flowability high-strength flow-state solidified soil which are different in strength and anti-scouring performance, so that the problem of poor protection effect of the riprap protection layer caused by riprap pore scouring is avoided; and the high construction cost caused by full-pouring anti-scouring flow state solidified soil is also reduced.

The invention belongs to the field of solid waste resource utilization, and discloses an artificial soil body prepared based on waste slag stone of a stone processing plant and a preparation method of the artificial soil body. The artificial soil body comprises a parent material layer, a leaching layer and a surface soil layer, and the preparation method of the artificial soil body comprises the following steps: (1) material treatment: mechanically crushing waste slag stones into multi-stage particle sizes, and mixing the crushed waste slag stones with mellow soil according to a specific mass ratio; (2) function synergistic enhancement: adding a water-retaining agent, an organic compound fertilizer and a compound microbial agent into different soil layer materials; and (3) structure construction: filling a mixed material according to layered design, and completing soil activation through spraying infiltration and microbial liquid spraying. According to the invention, through the synergistic effect of the particle size grading ratio of the slag stones, the mellow soil and the functional additive, the profile structure of natural soil is simulated, and the porosity, the water binding capacity and the microbial activity are optimized, so that the problems of low resource utilization efficiency of the waste slag stones, environmental problems caused by traditional landfill and scarcity of soil resources in engineering greening are solved.

The invention provides a test device and method for simulating pile wall integrated whole process performance evolution, and belongs to the technical field of underground structure pile wall simulation. Comprising a measuring device, a supporting device, a self-reaction force device erected above the supporting device, a restraining device placed on the upper surface of the supporting device, a test piece placed on the upper surface of the restraining device and a loading device fixed to the bottom of the self-reaction force device. The loading device is used for applying a load to the surface of a test piece to simulate active side soil pressure, the restraining device comprises a rolling shaft, a spring base plate and a fixed base plate, the test device simulates horizontal supporting counter-force of a foundation pit and resistance of soil below an excavation face of the foundation pit through the spring base plate and the fixed base plate in sequence, and the test progress is controlled through the measuring device. And recording the whole experiment process. Soil spring and support effects can be simulated by using different types of base plates, the spring base plate can well simulate soil layer conditions, and the fixed base plate has good support simulation conditions due to high rigidity.

The invention discloses an in-situ detection device and method integrating an electrochemical impedance spectroscopy technology and static sounding, and aims to realize synchronous in-situ detection of macromechanical parameters and microcosmic electrochemical properties of a soil body so as to improve the comprehensiveness and accuracy of geotechnical engineering field test. The device comprises an electrochemical test probe rod, a static sounding annular probe and a test analyzer, and the electrochemical test probe rod is provided with a linearly arranged three-electrode system and is integrally installed through an insulation module; the static sounding annular probe is provided with a plurality of sensors; the test method comprises the steps of connection of the test analyzer and the probe rod, penetration of the probe into the soil body, electrochemical test parameter setting, impedance spectrum acquisition, data fitting analysis and the like. Compared with a traditional drilling collection method, the method has the advantages that the original state of the soil body can be effectively kept, and meanwhile, the stratum structure identification, the moisture distribution prediction and the unfrozen water content analysis are realized in combination with the microscopic information obtained by the electrochemical impedance spectroscopy and the static sounding mechanical indexes, so that the macroscopic and microscopic properties of the soil layer are comprehensively reflected.

The application relates to the technical field of pipeline construction, and discloses a kind of excavating and supporting devices for water supply and drainage pipeline trench, including support frame, in the application, the two sides of side pressure component are moved outward by pushing mechanism, and the side pressure component is attached to the side wall of the trench, the first taper rod on the side pressure component is inserted into the soil layer of the side wall of the water supply and drainage pipeline trench, then the slide plate is driven by transmission mechanism by motor, the upper edge of the movable plate carried by the slide plate is lifted above the top edge of the water supply and drainage pipeline trench, then the second taper rod on the movable plate is inserted into the soil layer of the top edge of the trench from top to bottom during the downward movement of the slide plate driven by the transmission mechanism, the excavation of the water supply and drainage pipeline trench is supported, compared with the prior art, the first taper rod and the second taper rod support the trench from different directions, which can improve the support stability of the trench side wall, and solve the problem of insufficient support stability of single-direction lateral support of the trench in the prior art.

The invention discloses a water-preserved coal mining method for water-proof soil layer reconstruction, which comprises the following steps: before coal mining, measuring the water level difference of an upper water-containing layer and a lower water-containing layer of a water-proof soil layer and the average natural permeability coefficient of the water-proof soil layer, and sealing a measured drill hole after measurement; directional drilling is carried out on the underlying stratum of the water-proof soil layer bottom plate, directional drilling holes penetrate through the coal mining subsidence area, and the horizontal sections of the directional drilling holes are located at the positions downwards away from the water-proof soil layer bottom plate; freezing in the implemented directional drill by adopting a freezing technology; vertical drilling is carried out on the ground; mixed liquid of loess and water is injected into all the vertical drill holes; the electric field set seepage field is connected through a vertical drill hole to pull the loess; after at least 10 days, performing a conventional water injection experiment on all the vertical drill holes every day, and determining the average permeability coefficient of the reconstructed waterproof soil layer; and after the standard is reached, freezing is stopped, and all the drilled holes are sealed. The method is economical, reasonable, easy to construct, free of pollution and short in effective period.

The utility model discloses an anti-deviation PHC pipe pile tip which comprises a bearing table, a rod body is fixedly connected to the middle end of the bottom of the bearing table, a conical head is fixedly connected to the bottom of the rod body, inclined plates are fixedly connected to the periphery of the bottom of the bearing table, and the other ends of the inclined plates are fixedly connected with the bottom of the side face of the rod body. And a cutting knife is arranged on the inclined plate. By means of the rod body and the conical head, the pile can penetrate through a soil layer when entering the soil, the guiding effect is provided for the pile body to enter the soil, the pile body can be guided to vertically enter the soil according to the preset direction, the deviation possibility is reduced, the inserting nail can be inserted into the soil layer when the pile tip enters the soil, and the effects of positioning and preventing the pile tip from horizontally moving are achieved. The inclined plate is connected with the rod body and the bearing table, the stability of the whole structure is enhanced, the acting force of the soil layer can be dispersed and guided, the soil layer can be cut and crushed in the soil penetrating process through the cutting knife, and the resistance of the soil layer to the pile tip is reduced.

The utility model discloses a soil layer sampling detection device, which belongs to the field of soil layer detection and comprises a central plate, support frames are fixedly connected to two sides of the central plate, a protective shell is fixedly connected to the side surface of one support frame, and a double-shaft motor is fixedly connected to the top of the other support frame. Through a double-shaft motor, a first driving mechanism, a second driving mechanism and a cleaning assembly, the double-shaft motor drives a driving rod and a lead screw to rotate, the lead screw rotates to drive a lifting frame and a sampling pipe to move upwards, then when the lifting frame moves upwards, a toothed rod is driven to move upwards, a bent toothed rod is driven to move downwards through a gear, and the bent toothed rod moves downwards to drive a push rod to move downwards; meanwhile, the driving rod rotates to drive the driving barrel to rotate, the driving barrel rotates to drive the downward-moving push rod to move downwards, then the push rod moves downwards to drive the push plate and the cleaning brush sleeve to enter the sampling pipe, the cleaning brush sleeve is rotated to clean the inner wall of the sampling pipe, and therefore it is avoided that soil left on the inner wall of the sampling pipe influences the accuracy of sampling detection next time.

The present invention relates to the field of geothermal resource development and utilization, and specifically relates to an in-situ thermophysical property measurement probe ejection device and a working method; the in-situ thermophysical property measurement probe ejection device comprises: a main body having a first chamber and a second chamber, a measuring probe being provided in the second chamber; a cover body being provided on the main body, the cover body and the main body together enclosing the first chamber, a gas charging mechanism being provided on the cover body, the gas charging mechanism being connected to an external gas source; a gas release mechanism connecting the first chamber and the second chamber, the gas release mechanism comprising a heating rod, a copper ring, and a heat insulating ring; the in-situ thermophysical property measurement probe ejection device has the characteristics of miniaturization, low power consumption, and high operational feasibility, proposes an unlocking form of melting the first heating melting part by heat conduction, and under the working condition that hard materials such as stones may exist in the soil layer, the size of the annular exhaust port can be changed to control the gas flow rate, thereby achieving slow actuation, reducing impact, and avoiding damage to the measurement due to excessive ejection speed.

The invention belongs to the technical field of signal real-time analysis, and provides a multi-dimensional compaction state quantification and space cooperation compaction method and system, which are based on vibration response information of a road roller in a dam filling construction process, and perform real-time identification on a compaction state of a dam body filling soil layer by constructing a multi-dimensional compaction state quantification evaluation model; based on the difference between the vibration response and the prediction result of the kinetic model, performing reverse calibration and online updating on kinetic parameters representing the steel wheel-soil body coupling characteristics so as to improve the adaptability of the model to different filling areas and construction stages; a collaborative mechanism of adjacent compaction areas is introduced, construction information of a compacted area is fully utilized when construction parameters of a current compaction area are determined, collaborative optimization of the compaction parameters in the space dimension and the time dimension is achieved, and therefore closed-loop intelligent control over dam filling compaction construction is formed.

The application relates to the trenching technology of underground continuous walls, and particularly discloses a trenching construction process for underground continuous walls in close proximity to river-sea water-rich deep soft soil layers, which comprises six steps of construction preparation, hole leading, grab trenching, trench milling and trenching acceptance. In the step of grab trenching, a trenching machine is used for trenching, a soil receiving device is arranged to transfer the soil grabbed by the trenching machine, and a cleaning device is arranged to clean the grab of the trenching machine. The application has the effect of improving the soil grabbing efficiency of the trenching machine.

This invention discloses an experimental apparatus and method for testing the stability of natural gas hydrate wellheads. The experimental apparatus includes a drilling platform motion simulation subsystem, a wellhead assembly subsystem, and a hydrate simulation subsystem. The wellhead assembly subsystem includes a simulated wellhead and a conduit connected to the simulated wellhead. The hydrate simulation subsystem includes a fixed sleeve filled from bottom to top with a layer of backing soil and a hydrate simulation layer, and a soil pressurization simulation mechanism mounted on the fixed sleeve. The conduit passes through the backing soil layer of the soil pressurization simulation mechanism. This allows the force exerted by the backing soil layer on the conduit to more closely resemble actual conditions, thereby improving simulation accuracy.