31 results about "Soil movement" patented technology

The present invention provides a passive pile model test system comprising a model box, a moving sliding block, a pile pressing device, a vertical loading system, a lateral loading system, a data collecting system and a model pile, wherein a model groove internally provided with sandy soil is formed in the model box; the model pile is pressed into the sandy soil in the model groove by a vertical hydraulic jack; the moving sliding block is pushed by a lateral hydraulic jack; and the data collecting system is used for recording pile body test parameters for simulating a passive pile model test, that is, the passive pile model test system is formed. In the invention, by adopting the passive pile model test system, the basic shape of a pile base under lateral soil movement can be obtained, the measurement precision of soil displacement can reach 1 mm, the measurement precision of pile body displacement can reach 0.01 mm, the basic mechanical property of a pile base can be obtained well by improvement on precision, and the engineering safety capacity can be improved.

The self-balancing buried pipeline-soil interaction test device is suitable for the simulation research of the pipe-soil interaction test when the buried pipeline and the soil around the pipeline undergo relative displacement. The device is mainly composed of five parts: box body, pipeline, reaction frame, sensor system and actuator. The baffle is loaded horizontally to drive the steel strand and the pipe at one end of the steel strand to move relative to the soil, and the vertical actuator is loaded vertically on the rigid backing plate laid above the test soil to simulate a large buried depth. The device can consider the influence of various factors such as soil quality, burial depth, pipe diameter, pipe material, and water content on the pipe-soil interaction, and can promote a clearer understanding of the characteristics of the pipe-soil interaction.

The invention relates to a screw-type indirect thermal desorption device for remediation of organic polluted soil, which comprises an outer cylinder and a screw which are arranged in a horizontal direction; The upper part of the outer cylinder is provided with three branch pipes for collecting exhaust gas; the three branch pipes are collected in a centralized pipe, and there is a gas sampling port on the centralized pipe. The screw is fixed and supported in the outer cylinder; the screw has a cavity for heating the soil, the rear end of the cavity is used to introduce hot air, and the front end of the cavity is used to discharge hot air; the flow of hot air in the cavity The direction is opposite to the direction of soil movement. In the device provided by the invention, there are a plurality of temperature detection devices and gas collection devices, and a centralized control system controls the collected data, and at the same time, the hot air in the thermal desorption process can be recycled, so that the organic polluted soil remediation process is more energy-saving and environmentally friendly , visualization.

The invention belongs to the technical field of soil sampling, and in particular relates to a soil sample film loading device for soil dynamic triaxial test, which comprises a sampling hole opened on the ground surface, a second cutting barrel slidingly connected in the sampling hole, and a second cutting barrel slidingly connected in the said sampling hole. The soil fetcher in the second cutting bucket; the soil fetching device includes a first cutting bucket in the second cutting bucket and a casing assembly located in the first cutting bucket that is slidably connected, and the casing assembly is connected to the A cutting unit is arranged between the first cutting barrels, and the bottom end of the mantle assembly is vertically slidably connected to the bottom end of the first cutting barrels; There are a number of buffers arranged at equal intervals in the circumferential direction, and a number of guide sleeves are arranged between the second cutting barrel and the sampling hole, and the outer sides of the guide sleeves are fixedly connected to the inner wall of the sampling hole. The invention can effectively improve the quality of the soil sample casing, significantly reduce the disturbance during the soil sample casing process, and solve the problem that the test is affected by the disturbance.

The invention relates to an annular cutting device which comprises a base, a rotary table, a rotary drive mechanism, an upper fixing ring, a lower fixing ring and a vertical loading mechanism, wherein the rotary table is mounted on the base; the rotary drive mechanism is connected with the rotary table; an annular base plate is mounted on the rotary table; an organic glass water groove is fixedly connected with the annular base plate to form a whole body; the lower fixing ring is arranged at the bottom of the organic glass water tank; a porous ceramic ring is arranged at the bottom of the lower fixing ring; the upper fixing ring is arranged on the lower fixing ring through the vertical loading mechanism; a rock soil sample is arranged on the porous ceramic ring; an annular loading plate is pressed on the porous ceramic ring on the rock soil sample; the annular loading plate is connected with the vertical loading mechanism; the vertical loading mechanism comprises a load force arm, a central main shaft, a load bracket and a torque arm; the torque arm is transversely arranged in the load bracket; tangential load force measurement rings are mounted at two ends of the torque arm; the tangential load force measurement rings are adhered to the load bracket. According to the annular cutting device, rock soil movement cutting strength parameters can be accurately measured and easily detected, the price is low, and the maintenance expense is low.

The invention discloses a soil sample membrane loading device for a soil movement triaxial test, comprising a triangular fixing device and a membrane loading device. Divided into soil sample pier, soil sample sleeve, soil sample sleeve lifting rod and rubber membrane pressure ring, the membrane loading device prepares one set of commonly used soil samples with a diameter of 39.10mm and a diameter of 50.00mm; In the prior art, the shape and dynamic strength of the soil are easily damaged when the membrane loading device is used for membrane loading of soil samples, which improves the success rate of soil sample loading membrane, improves the speed of soil sample loading membrane, and reduces labor costs.

The invention discloses a mining area subsidence singe pile static load model test device and a test method. The device comprises a model slot of which the front of peripheral surface is transparent at least, wherein the slot bottom serves as a bearing plate; a sand leakage hole is formed in the slot bottom; a blocking orifice plate is arranged below the slot bottom and is used for blocking the sand leakage hole; the blocking orifice plate is supported by using a supporting column; a sand layer, a polyethylene film and a clay layer are sequentially paved in the model slot from the bottom upwards; a model pile is embedded in the clay layer; soil pressure boxes are embedded at the bottom and in the periphery of the model pile; a strain gage is arranged on the pile body; a loading device is arranged on the model top; the soil pressure boxes and the strain gage are connected to a data acquisition unit outside the model slot; and dial indicators are respectively arranged on the tops of the model pile and the clay layer. According to the test method disclosed by the invention, surface soil movement deformation rules in multiple mining areas can be accurately simulated, and the mining area surface deformation process under multiple geological conditions and different curvature change processes can be simulated.

The invention provides a transparent soil model test device for simulating lateral soil movement and a test method for the transparent soil model test device. The transparent soil model test device comprises a transparent model box which can be fixed to an optical table, a T-shaped block and a loading block. The whole transparent model box is a rectangular box body. The circumferential wall of one side of the rectangular box body is provided with a rectangular notch. The T-shaped block is embedded in the notch side of the transparent model box. An oil pressure jack, two industrial cameras and two laser transmitters are arranged outside the transparent model box. During testing, a test model pile is buried in transparent soil. The loading block is abutted against a web part by the oil pressure jack. The oil pressure jack applies displacement to the loading block in a graded mode. The two laser transmitters transmit lasers. Two transparent soil speckle fields are formed in the transparent soil. The industrial cameras record the change of the transparent soil speckle fields. The test method for the transparent soil model test device comprises the steps of mold making, transparent soil preparation, graded loading and the like. The transparent soil model test device is small in size, the system is arranged reasonably, and test operation is convenient.

The invention relates to the technical field of soil sample test and discloses a soil sampler. The soil sampler includes a base glidingly connected three wire saws. The length of the steel saws is higher than the height of soil samples. The three wire saws are evenly distributed along the circumferential direction, and the angle between two adjacent wire saws is 120 degrees. A control mechanism isarranged on the base to control the movement of the wire saws. The soil samples are put on the base. A operator controls the movement of the wire saws through the control mechanism, with three wiresaws moving toward columnar soil. The angle between the two adjacent wire saws is always 120 degrees. The three wire saws cut the columnar soil into the soil samples of three fan-shaped pieces. Because the angle of the two adjacent wire saws is always 120 degrees, the center angle of the soil samples is also 120 degrees. The three soil samples are of the same size and the precision of the cut soilsamples is higher. The operator can cut the soil samples only by controlling the control mechanism, which is easy to operate and convenient to use.

The invention relates to a device for throwing and covering soil after sowing with a wide seed belt. The double-side baffles are fixed on both sides behind the wide seed belt rotary tillage mechanism, and a floating and adjustable upper cover plate is installed above it, and a rear retaining plate is fixed behind it. The soil rear throwing guide plate is fixed in the double-sided baffle, the soil rear throwing guide plate is inclined to the rear and upward, and there is a gap from the rear soil retaining plate; at least one seed drop is fixed through the bottom of the soil rear throwing guide plate The limiting pipe and the seeding pipe are inserted into the limiting pipe for falling seeds; the upper cover plate, the rear retaining plate, and the double side baffles form a soil limiting space, and the soil rear throwing guide plate separates the soil limiting space and makes the width The soil thrown by the rotary tiller with the rotary tiller forms an inverted L-shaped soil movement track passing through the gap. The invention adopts the rotary tillage soil and then throws it across, the seeds are evenly sown on the ideal seed bed prepared by the rotary tillage, and then the soil is automatically covered on the seeds, which reduces the sowing amount, ensures that the sowing can be penetrated into the soil, and the sowing depth is controllable and reduces the cost. Seed drying rate.

The invention discloses a multifunctional device for monitoring the geological environment in a coal mining subsidence area, which comprises a fixed pipe and several interconnected elastic pipes, the fixed pipe is used to be placed in a tunnel, and the elastic pipe is located in the fixed pipe One end of the elastic tube is provided with a plurality of first communicating tubes, the first communicating tubes are used to pass into sand and an external water source, and the other end of the elastic tube is provided with a plurality of second communicating tubes, corresponding to the first communicating tubes A connecting pipe and the second connecting pipe are provided with the same marks, an electric control mechanism for controlling connection and separation is provided between the first connecting pipe and the second connecting pipe, and an electric control mechanism is provided between the elastic pipe Interconnected hoses are provided, and the hoses are used to transport liquid nitrogen. A three-dimensional scanner is installed on the ground, and the three-dimensional scanner is used to scan the elastic tubes. The trend and situation of soil movement can be collected and the deformation situation can be fully displayed on the ground.

The invention relates to the field of tunnels and underground engineering, in particular to a large-diameter shield soil movement convergence model and a calculation method thereof. According to the large-diameter shield soil movement convergence analysis model and the calculation method, different convergence modes of soil around a large-diameter shield tail after a lining is disengaged from theshield tail are achieved, and the large-diameter shield soil movement convergence analysis model and the calculation method better conform to engineering practice. The method comprises the steps thatstep 1, assumption of a large-diameter shield soil body movement convergence model is put forward; Step 2, a uniform vertical movement convergence model of the large-diameter shield soil body is established; 3, an uneven vertical movement convergence model of a large-diameter shield soil body is established; 4, a calculation method of stratum deformation under the uniform and non-uniform verticalmovement convergence model of the large-diameter shield soil body is adopted; by means of the method, stratum deformation caused by large-diameter shield construction can be predicted more accurately,a reliable and effective calculation method is provided for regulation calculation, engineering problems caused by stratum deformation can be reduced, and remarkable engineering value and economic benefits are achieved.