293 results about "Solum" patented technology

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 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 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 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 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 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 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.

The utility model belongs to the technical field of ecological breeding equipment, and particularly relates to an in-water circulation ecological breeding barrel which is detachably arranged in a breeding pond, a plurality of breeding holes are circumferentially formed in the bottom of the breeding barrel, water permeable holes are circumferentially formed in the top of the breeding barrel, and a multi-layer composite substrate layer sequentially comprises a first soil layer, a second soil layer and a third soil layer from bottom to top, the first soil layer comprises soil and earthworm soil, and the earthworm soil contains active earthworm groups; the second soil layer comprises coco coir, perlite and vermiculite; the third soil layer comprises peat, perlite and vermiculite; the fourth soil layer comprises peat and vermiculite, and the biological-physical synergistic purification system has the beneficial effects that biological-physical synergistic purification is achieved, and the self-purification capacity of the system is improved.

The utility model relates to the technical field of green plant planting, and discloses a garden green plant soil loosening device which comprises a shell, a partition plate is fixedly connected to the interior of the shell, a cutting roller is rotationally connected to the front side of the bottom of the partition plate, and a soil loosening roller is rotationally connected to the rear side of the bottom of the partition plate. A plurality of mud pulling claws are fixedly connected to the outer wall of the soil loosening roller at equal intervals, the mud pulling claws are designed to be arc-shaped, a driving motor is fixedly installed on the left side of the top of the partition plate, and the output end of the driving motor and the left end of the cutting roller penetrate through the partition plate and are fixedly connected with a first chain gear. According to the garden soil loosening device, the driving motor drives the first chain gear to rotate and drives the chain to conduct transmission, then the cutting roller and the soil loosening roller are driven to rotate, the soil pulling claws are made to turn over and pull soil, and the effects that large soil blocks or hardened soil layers in garden land are crushed, the soil is fully scattered, and a loose soil environment is provided for growth of garden green plants are achieved.

The application discloses a kind of slot wall collapse simulation device, including box, water inlet hole plate, water outlet hole plate, cover plate, air connection water inlet pipe, displacement sensor;Multiple pore water pressure sensors;Cover plate is installed above first area, and is used to close the top of first area;Air connection water inlet pipe is communicated with first area inside;Multiple pore water pressure sensors are placed in the inside of soil sample in second area;Displacement sensor is installed in simulation tank.The device can simulate the migration of water flow in soil sample under different groundwater depths by pressurization, and then cause the process of soil sample collapse;It can test the stability of soil layer conditions in construction area under the action of groundwater, quantitatively evaluate the porosity and water erosion resistance of soil sample;At the same time, it can also approximately infer the depth of possible hole wall collapse, for engineering construction reference, to judge whether soil sample reinforcement is needed and propose appropriate soil sample reinforcement method, reduce the impact of hole wall collapse on project progress.

This invention belongs to the field of soil environmental monitoring and discloses a three-dimensional prediction method for organic matter in soda saline-alkali soils. The method includes the following steps: First, multi-source remote sensing, environmental, and soil organic matter measurement data are collected, and a unified coordinate resolution is established to create a grid. Then, land cover features are extracted using UAV imagery and DSM (Digital Signal Processing), and land cover classification is completed by combining shadow restoration. Sub-pixel endmember abundance is calculated using satellite pixel aggregation data. A three-dimensional covariate dataset is constructed by fusing various features with soil depth. Finally, an ExtraTrees model is built to predict the three-dimensional distribution of organic matter layer by layer. This invention integrates multi-source remote sensing data to build a complete technical system, which can accurately characterize differences in surface composition, simultaneously represent the spatial distribution and vertical variation of organic matter, and effectively solve problems such as mixed pixel interference, poor data coordination, and insufficient three-dimensional prediction. It has strong practicality and good application prospects.

The invention relates to the technical field of soil mass layered monitoring, and discloses a soil mass layered settlement monitoring device and a soft soil parameter dynamic updating method.The soil mass layered settlement monitoring device comprises a fixing steel plate, a plurality of fixing rods and a plurality of suspension plates, the fixing steel plate is arranged at the bottom of a soil mass, the fixing rods are perpendicularly arranged on the surface of the fixing steel plate, and scales are arranged on the outer surfaces of the fixing rods; the multiple suspension plates are located on the surfaces of all soil layers of the soil body respectively and arranged on the outer surfaces of the multiple fixing rods in a sleeving mode respectively, and indicating cylinders are arranged at the tops of the suspension plates. The fixed steel plate provides a stable foundation, and the plurality of fixed rods with scales ensure that the monitoring reference is accurate; the suspension plate is sleeved with the fixing rod, corresponds to soil layers of different depths and can synchronously move along with settlement of the soil layers, and the top indicating cylinder protrudes out of the surface of the soil layer, so that data reading is facilitated, and soil disturbance is avoided; the structure can synchronously capture layered settlement data of different depths and different positions, accurately distinguish independent deformation characteristics of each soil layer, and fill the blank that traditional equipment can only measure total settlement.

The application relates to the technical field of solidifying agents and discloses a construction method for adjusting the proportion of components of a solidifying agent according to the properties of soil layers, which comprises the following steps: identifying the arrangement depth of each stratum of a construction site and the soil body characteristics in the stratum, determining the water-cement ratio and component formula of the solidifying agent according to the soil body characteristics in each stratum; arranging the components of the solidifying agent, including cement, mineral powder, fly ash, slag reducer, anhydrous sodium sulfate and water bodies, and respectively arranging the components independently and respectively connecting the components to a stirring barrel, a spraying pipe is connected to the stirring barrel, the spraying pipe is arranged in a stirring rod and extends to the bottom of the stirring rod; in the process of drilling the stirring rod in the stratum, a controller identifies the soil body characteristics of the drilled stratum according to the drilling depth of the drill rod; according to the soil body characteristics and the component formula, the controller arranges the components of the solidifying agent in the stirring barrel, the components in the stirring barrel are mixed and stirred to form the solidifying agent; and the solidifying agent is sprayed out from the bottom of the drill rod through the spraying pipe and is mixed and stirred with the soil body in the stratum.

The utility model discloses a model test system for simulating the influence of pile shoe penetration on an adjacent large-diameter single pile, which relates to the technical field of geotechnical engineering tests and comprises a model test box, a pile shoe foundation model, a pile foundation model, a loading device and a data acquisition system. According to the device, the model test box is creatively integrated to reproduce the layered structure of the ocean soil layer, the pile shoe loading device is adopted to simulate the pile shoe penetration process, and the horizontal loading device is used for applying lateral load to simulate the loading state of an adjacent pile. A soil body displacement measuring device is embedded in the device, modular design is adopted for a pile foundation model, and working conditions with different length-diameter ratios are simulated through extensible sections and an expanding adapter. The test device not only considers the soil squeezing effect during penetration of the pile shoe, but also performs parametric design for the length-diameter ratio characteristic of the large-diameter single pile, and provides an effective simulation and monitoring means for exploring the mechanical response of the penetration of the pile shoe to the adjacent large-diameter single pile.

The invention relates to the technical field of reclamation area foundation reinforcement, and particularly discloses a collaborative resistance increasing construction system and method for a reclamation area multi-stage anchoring uplift pile, through a multi-stage anchoring structure, in combination with a microorganism induction mineralization technology and a power pre-pressing compaction technology, the binding force and uplift performance of a pile body and a soil body are remarkably improved, and the construction efficiency is improved. In addition, an environment-friendly microorganism grouting mode is adopted to replace traditional chemical grouting, and negative effects on the ecological environment are reduced. Vibration and a vacuum drainage process are combined in the pre-pressing compaction process, so that the compaction and consolidation process of the soil body is further accelerated, and the stability of the pile body in a complex soil layer and a marine environment is ensured. According to the scheme, through structure optimization and process collaboration, the bottleneck problem of application of a traditional uplift pile in a reclamation area is solved, and remarkable economic benefits and environmental advantages are achieved.

The application discloses a stacked high-fidelity soil sampling device and a sampling method thereof. The device comprises a sampling tube, which comprises a plurality of sampling single sections. One end of the sampling tube is provided with a sampling head for soil sampling, and the other end of the sampling tube is provided with a connecting head. The sampling single section comprises a cylinder body, a plurality of inner tubes are movably inserted into the inner wall of the cylinder body through a support structure, and the plurality of inner tubes abut along the axial direction of the cylinder body. The sampling head is of a conical structure, and a sampling channel penetrating through the middle part of the sampling head is arranged. The sampling channel abuts and communicates with the inner tubes. The sampling tube comprises a plurality of sampling single sections, and the sampling single section further comprises a plurality of inner tubes. Therefore, the soil sample can be segmented during sampling, and the soil sample is located in each inner tube during sampling. The cross-contamination of the soil sample can be reduced, and high-fidelity soil sampling can be realized.

The invention discloses a dual-drive soil sampler capable of achieving power supplement, and relates to the technical field of soil layer sampling, the key point of the technical scheme is that the dual-drive soil sampler comprises a sampling barrel and further comprises a mounting box, and a gasoline engine and an electric drive controller are arranged in the mounting box; a mounting frame is arranged at the bottom of the mounting box, a driving motor is fixedly arranged in the mounting frame, a first output shaft is mounted at the bottom of the driving motor, and a transmission assembly is arranged between the first output shaft and the sampling barrel; a range extending mechanism in transmission connection with the gasoline engine is further arranged in the mounting frame. The device is provided with a dual-drive operation mode of the drive motor and the gasoline engine, meanwhile, the drive motor serves as a main power structure, the range extending mechanism is arranged, the device can be matched with the gasoline engine to provide additional power supplement when the power of the drive motor is insufficient, gasoline consumption and tail gas emission are reduced, and the service life of the device is prolonged. The ecological operation requirement of an agricultural test field is better met, meanwhile, the device can better adapt to different soil working conditions, and the soil sampling operation efficiency is higher.

The utility model relates to the technical field of soil monitoring, in particular to a small frozen soil vertical deformation monitoring device, which comprises a bottom anchoring structure, an inner sliding rod, an outer sleeve and a first monitoring mark point, and is characterized in that the inner sliding rod is fixedly connected with the bottom anchoring structure; the outer sleeve is in sliding connection with the inner sliding rod; according to the small frozen soil vertical deformation monitoring device provided by the embodiment of the utility model, the interference of lateral soil layer deformation on a measurement result can be effectively eliminated, and the vertical displacement can be accurately identified and monitored.

The invention discloses a reverse vacuum preloading reinforcing system and a construction method. The system comprises a reverse vacuum preloading unit and a closed operation cavity unit. The reverse vacuum preloading unit comprises a prefabricated horizontal drainage body arranged at the bottom of the soft soil layer, a vacuum main pipe arranged in the prefabricated horizontal drainage body and led out upwards, a plurality of vertical drainage plates and a geotextile and geomembrane sealing layer covering the surface of a treatment area. The bottom end of each vertical drainage plate and the prefabricated horizontal drainage body are bound in advance to form a grid-shaped integrated drainage structure. The closed operation cavity unit is integrally sunk or constructed in a soil body, a plurality of vacuum pumps are arranged in the deep part in the closed operation cavity unit and connected with a vacuum main pipe through a quick connection structure, and a water suction pump is arranged at the top and used for timely draining accumulated water in the cavity. According to the system, negative pressure acts on a bottom drainage channel in a deep near field, the negative pressure transmission distance is shortened, on-way attenuation is reduced, and the consolidation efficiency and vacuum stability of deep saturated soft soil are improved through bottom short-path drainage.

The invention belongs to the technical field of foundation pit supporting, and particularly relates to a geotechnical engineering foundation pit anti-collapse supporting structure which comprises a foundation pit supporting plate, a stable supporting mechanism is installed on one side of the foundation pit supporting plate, and an adjustable abutting and fixing mechanism is installed at the end, away from the foundation pit supporting plate, of the stable supporting mechanism. A movable inclined rod is rotatably mounted at the top end of the adjustable abutting and fixing mechanism, a sliding rail is slidably mounted at one end of the movable inclined rod, the sliding rail is fixedly mounted on one side of a foundation pit supporting plate, and a protection assembly is arranged at the top end of the foundation pit supporting plate; by arranging the protection assembly, the problems that in rainy days, rainwater easily affects the soil structure at the bottom end of the supporting structure, a soil layer absorbs water and expands, consequently, a fixing column at the bottom end of the supporting structure shifts, the supporting structure topples over and the foundation pit collapses are solved, the influence of the rainy days on the soil layer of the foundation pit is reduced, and the service life of the foundation pit is prolonged. And the stability of the supporting structure is improved, so that the supporting effect of the supporting structure on the foundation pit is enhanced.

The application discloses a composite prevention and treatment structure for preventing soft soil and miscellaneous fill from interpenetrating and a construction method, and belongs to the technical field of foundation treatment. The structure is arranged between a soft soil layer and a miscellaneous fill layer and sequentially comprises, from bottom to top, a lower layer isolation unit composed of a geocell filled with granular materials and forming a flexible raft support, a microbial cementation unit including a three-dimensional microbial carrier layer and microbial mineralization products planted in the three-dimensional microbial carrier layer, and an upper layer constraint unit adopting a geogrid and a mechanical interlocking with the miscellaneous fill. Through the synergistic effect of physical isolation and biological cementation, the calcium carbonate crystals generated by MICP are used to block the interface micro-pores, and the macro-reinforcing function of the geosynthetic material is combined, so that the interface fine particle loss and interpenetration deformation problems are effectively solved. The application has the advantages of high shear strength, good reinforcement uniformity, green environmental protection, strong puncture resistance and the like, and can significantly improve the long-term stability of a complex foundation.

The utility model relates to a three-shaft mixer drill bit which comprises a drill rod, a cone-shaped front guide structure is arranged at the front end of the drill rod, diamond particles are inlaid on the surface of the front guide structure and are arranged in a honeycomb shape, a soil loosening structure is arranged behind the front guide structure, and a main cutting structure is arranged behind the soil loosening structure to process chippings. The deslagging structure is arranged behind the main cutting structure to avoid residue attachment, the connector is arranged on the rear side of the main cutting structure and used for being connected with a piling frame, and the ultrasonic transducer is arranged on the rear side of the drill rod. The front guide structure can have certain strength through diamond particles, the conical design is beneficial to enhancing impact force, operation on a hard stratum is more convenient, and the soil layer is subjected to primary treatment through the soil loosening structure and then subjected to secondary treatment through the main cutting structure; the main cutting structure is prevented from making direct contact with large-particle soil, the problems that abrasion is fast and stirring is uneven are solved, and the problem that the drill bit is prone to being blocked is solved through the arrangement of the ultrasonic transducer and the deslagging structure.

This invention relates to an ecological restoration structure for steep rock slopes based on bio-stabilization technology, comprising a rock slope body, anchor bolts, a metal mesh, a square solidification cavity, a bio-stabilized coarse-grained soil layer, a vegetation base layer, and n-shaped components. The metal mesh is laid flat on the surface of the rock slope body and fixed thereto by several anchor bolts. The anchor bolts are arranged in rows laterally and columns longitudinally along the rock slope body and driven into the stable rock strata. The square solidification cavity is fixed to the rock slope body by n-shaped components embedded in the rock mass. The bio-stabilized coarse-grained soil layer is formed by spraying a soybean enzyme treatment solution to solidify the coarse-grained soil containing bio-slurry laid within the square solidification cavity. The vegetation base layer is sprayed onto the surface of the bio-stabilized coarse-grained soil layer. This invention provides an ecological restoration structure for steep rock slopes with good strength and integrity, convenient and efficient construction, good ecological restoration effect, and strong ecological stability and sustainability.