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31 results about "Soil movement" patented technology

Soil Movement. Soil movement can cause extensive damage to a building, including cracking and heaving of slabs and hardscape, and separations of drywall and stucco.

Device and Method for Improved Pile Casting

This invention deals with a device and a method for an improved concrete pile casting in swelling soils by substantially lowering or eliminating heave forces created in active soils from affecting said piles by surrounding selectable parts of the pile by an easily deformable material for lowering the horizontal and the vertical soil movement effect, and by providing a low friction surface for further lowering vertical forces effect. This inventive device and method further facilitates subsequent operations by permitting an easy and seamless casting of columns and by ensuring a clean and smooth pile surface for a better adhesion of new concrete to an old one, as well as preventing cement dough seepage to surrounding soil and concrete segregation.
Owner:HAZZAN BASEM

Annular cutting device

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.
Owner:NORTHEAST GASOLINEEUM UNIV

Transparent soil model test device for simulating lateral soil movement and test method for transparent soil model test device

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.
Owner:重庆大学建筑规划设计研究总院有限公司

Bridge pile foundation anti-earthquake analysis simplified method considering whole soil liquefaction process

The invention belongs to the technical field of geotechnical engineering and foundation engineering and relates to a bridge pile foundation anti-earthquake analysis simplified method considering the whole soil liquefaction process in the field of earthquake engineering. The method comprises the steps that a model calculation parameter reasonable determining method and a concrete expression are given out by building a liquefied site pile-soil earthquake interaction macrocell model which well considers the influence on a soil spring of the pile-soil earthquake interaction from sand liquefaction and is used for achieving the process of the pile-soil earthquake interaction; then based on a non-linear Winkler foundation beam model, the built macrocell model is adopted, mass inertia force of soil, participating in vibration, around a pile, inertia force of an upper structure, radiation damping of soil and other effects are considered, a liquefied site pile-soil-bridge beam structure earthquake interaction simplified analysis model is built, soil movement and pore pressure ratio time interval obtained by implementing free liquefaction site power analysis serve as numerical model external input and are used for liquefied site pile-soil earthquake interaction problem analysis, and a new analysis method is provided for actual liquefied site bridge pile foundation anti-earthquake design.
Owner:唐亮 +1

Mining area surface subsidence singe pile static load model test device and test method

ActiveCN106284436AMonitor displacement changesGuaranteed vertical constant pressure loadingFoundation testingLoad modelData acquisition
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.
Owner:HENAN POLYTECHNIC UNIV

Method for calculating bending moment and strain of underground pipeline caused by ground access type shield construction

The invention provides a method for calculating a bending moment and strain of an underground pipeline caused by ground access type shield construction. A computational formula of vertical soil deformation caused by soil loss is proposed in the ground access type shield tunnel construction based on a three-dimensional solution of a uniform soil movement model of a shield tunnel; and based on a Winkler model of beam on elastic foundation, in combination with the computational formula of vertical soil deformation, a computational formula of the bending moment and the strain of the underground pipeline caused by the ground access type shield construction is deduced. According to the method provided by the invention, the bending moment and the strain of the nearby underground pipeline in actual ground access type shield construction are predicted by theoretical formulas to provide prevention and guidance for the engineering and provide research basis for future researches on the influence of the ground access type shield construction to nearby pipelines.
Owner:ZHEJIANG UNIV CITY COLLEGE

Method for preventing large-section rectangular pipe-jacking tunnel from generating soil loading phenomenon

The present invention belongs to the field of underground engineering non-excavation construction, and especially relates to a method for preventing a large-section rectangular pipe-jacking tunnel from generating the soil loading phenomenon. The method comprises the steps of: (1) constructing a pipe-jacking tunnel working well; (2) performing theory positioning of the pipe-jacking tunnel profile on a well wall of the working well adjacent to the tunnel side; (3) constructing an isolation layer over the pipe-jacking tunnel profile; (4) constructing a tunnel portal; (5) hoisting a pipe joint in position; and (6) performing jacking construction. When the jacking construction is performed, soil at an upper portion can be effectively protected due to the effect of the isolation layer, soil movement along with jacking of a pipe-jacking machine and the pipe-jacking pipe joint can be prevented, so that the soil loading phenomenon can be avoided.
Owner:CHINA RAILWAY TUNNEL SURVEY & DESIGN INST

Screw type indirect thermal desorption device for organic contaminated soil remediation

The invention relates to a screw type indirect thermal desorption device for organic contaminated soil remediation. The screw type indirect thermal desorption device comprises an outer cylinder and ascrew which are arranged in the horizontal direction. The upper portion of the front end of the outer cylinder is fixedly connected with a feeding machine with scrapping materials, and the lower partof the rear end of the outer cylinder is fixedly connected with a discharging cylinder; three branch pipelines are arranged at the upper part of the outer cylinder for collecting tail gas; the three branch pipelines are gathered in a centralized pipeline, and a gas sampling opening is formed in the centralized pipeline. The screw rod is fixedly supported in the outer cylinder; a cavity used for heating soil is formed in the screw rod, the rear end of the cavity is used for introducing hot air, and the front end of the cavity is used for exhausting the hot air; and the flowing direction of thehot air in the cavity is opposite to the moving direction of soil. According to the device provided by the invention, a plurality of temperature detection devices and gas collection devices are arranged, a centralized control system is used for controlling data collection, and meanwhile, hot air in the thermal desorption process can be recycled, so that the organic contaminated soil remediation process is more energy-saving, environment-friendly and visual.
Owner:ZHEJIANG UNIV

Hot-melt docking method for PE pipes

The invention discloses a hot-melt docking method for PE pipes. The hot-melt docking method comprises the following steps of (1) pretreatment: milling to-be-docked end surfaces of the pipes to be smooth by using an electrically milling cutter, so as to guarantee the docking surfaces of two pipes to fit completely; (2) preheating: turning a power source of a heating plate on, heating to a constant temperature, putting the heating plate between end surfaces of the two pipes, starting a pipe electro-hydraulic device to contact two pipe surfaces with the heating plate completely at the same time, and heating until heating surfaces of the pipes crimp; (3) melting: adjusting a pressure of the electro-hydraulic device to 0.01-0.05 MPa and heating for 30-280 s when crimp in the step (2) reaches a predetermined height; (4) docking: drawing the heating plate out, restarting the hydraulic device to fully dock the melted end surfaces of the two pipes and lock the hydraulic device. Compared with a conventional docking method, the hot-melt docking method provided by the invention has the significant advantages that the strength of a hot-melt interface of the PE pipes is higher than that of a pipe body; the joint is not liable to fracture due to the effects of soil movement or live load; and the method is specific and digitized and has high operability.
Owner:NINGGUO DONGXING IND

In-hole air bag expansion pressurization and vacuum-electroosmosis composite drainage precipitation system and method

InactiveCN111827248ARapid dehydration of precipitationSoil preservationAir compressionSuction stress
The invention relates to an in-hole air bag expansion pressurization and vacuum-electroosmosis composite drainage precipitation system and method. The system comprises a vacuumizing mechanism, a direct-current power supply mechanism, an air compression mechanism, a plurality of vacuum drainage wells and a plurality of transverse pressurizing holes distributed around each vacuum drainage well. Theprecipitation method comprises the following steps: (1) vacuum tube well drainage, wherein most of free water is drained under the action of vacuum suction force, and electroosmosis precipitation timeis saved; (2) vacuum electroosmosis precipitation, wherein part of pore water is drained under the action of vacuum suction force and electroosmosis force, and the water content of the soil body is further reduced; and (3) vacuum transverse pressurization precipitation, wherein a pressurization air bag is expanded squeeze the surrounding soil body, so that the pore ratio is rapidly reduced, the drainage precipitation speed is increased, and the soil body is reinforced. Compared with the prior art, by means of the effects of vacuum water absorption, air bag pressurization and electroosmosis, the risks of foundation pit excavation water gushing and pile foundation damage by soil movement in high-water-content and low-permeability soil layers are reduced, and rapid drainage precipitation ofmuddy soil is realized.
Owner:TONGJI UNIV

Passive pile model test system

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.
Owner:TIANJIN CHENGJIAN UNIV

Self-balancing buried pipeline and soil interaction test device

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.
Owner:BEIJING UNIV OF TECH

Geotextile fabric and method for enhancing soil structure

A unidirectional geotextile fabric (24) for use in reinforcement of earthen retaining walls, embankment, slopes and related structures. The fabric is an open grid of high modulus of elasticity strands (26) extending in the weft direction and strands (28) of comparatively lower modulus of elasticity material extending in the warp direction. The fabric is preferably coated with a curable resinous material of sufficient thickness to protect the glass strands from breaking as the fabric is rolled onto cores and unrolled at the job site. When laying the fabric, a roll of the fabric is placed at one end of the face of the earthen structure being constructed and simply unrolled in a direction generally parallel to the structure's face. Because the high modulus strands of the fabric are the weft strands they extend and inhibit soil movement in a direction substantially perpendicular to the face of the structure.
Owner:SAINT GOBAIN TECHN FABRICS CANADA

Geological measuring instrument

The invention relates to the geological monitoring field, and especially relates to a geological measuring instrument. The geological measuring instrument comprises a pipe body, and a multi-path signal converter, a dip-angle sensor, a rainfall sensor, at least one moisture sensor, at least one nine-shaft sensor and at least one temperature sensor which are arranged in the pipe body; one end of thepipe body is closed and the other end is opened; a cover body is arranged at an opening of the pipe body, an inside surface of the cover body is in signal connection with the rainfall sensor, and thecover body is made of piezoelectric ceramic. On a specified monitoring location, the natural rainfall phenomenon can be continuously observed through a rain gauge and the liquid level sensor; the soil moisture change is mastered through the soil volume water content sensor, and the soil movement is measured through the dip-angle sensor; since the soil internal movement is directly related to therainfall infiltration and the increasing of the water moisture content, the correlation among the rainfall infiltration, the soil moisture content and the soil internal movement can be effected mastered by simultaneously observing the data at the same site, thereby predicting the landslide or debris flow and like disasters.
Owner:BEIJING ANSAIBO TECH

Field box-type parallel transplanting method and device

InactiveCN106385890AGuarantee the quality of hole punchingReduce the frequency of entry and exitTransplantingFurrow making/coveringPunchingElectromagnetic clutch
The invention discloses a box-type parallel transplanting technology which is based on a field box-type parallel transplanting method and device and suitable for field operation, and a tractor is used in the technology for traction. High quality continuous operation can be achieved by constant speed translational motion of the box-type parallel transplanting device along the opposite direction of the tractor, operation quality can be improved, and equipment reliability can be increased. The box-type parallel transplanting device mainly comprises a machine frame, a slide rail, a box body, a punching system and a drive system; the slide rail and the machine frame are in fixed connection, the box body rolls on the box body, the punching system is located in the box body, and can carry out in-soil and out-soil movement. During the operation, the driving force of the box-type parallel transplanting device is provided by land wheels; on and off of an electromagnetic clutch can be controlled by stroke switches fixed on the slide rail and the box body, and reciprocating motion of the box body and up and down motion of a punching body can be realized.
Owner:NORTHWEST A & F UNIV

A Soil Sample Membrane Device for Soil Dynamic Triaxial Test

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.
Owner:NANJING TECH UNIV

Annular cutting device

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.
Owner:NORTHEAST GASOLINEEUM UNIV

A pipe-inserting type soil water detector calibrating device

The invention relates to a pipe-inserting type soil water detector calibrating device. The calibrating device includes a mounting rack. The mounting rack is provided with calibrating units. The calibrating units include soil box assemblies and mounting structures used for mounting soil water detectors. The soil box assemblies include soil boxes. The soil boxes are provided with through holes intowhich the soil water detectors are inserted. The mounting racks are also provided with a relative movement driving mechanism driving the soil box assemblies and the mounting structures to move relatively so that the soil water detectors move into and out of the through holes. The calibrating device replaces manual work for inserting the soil water detectors into the soil box assemblies in a subsection manner, thus reducing labor intensity of workers and increasing the working efficiency.
Owner:ZHONGYUAN OPTOELECTRONICS MEASUREMENT & CONTROL TECH

A single pile static load model test device and test method for ground subsidence in a mining area

ActiveCN106284436BMonitor displacement changesGuaranteed vertical constant pressure loadingFoundation testingVena contracta diameterLoad model
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.
Owner:HENAN POLYTECHNIC UNIV

Self-adaptive variable tillage width micro-tiller cutter rest

The invention relates to an agricultural mechanical device, in particular to a variable micro-tiller cutter rest suitable for an urban micro-agricultural scarification operation device. The self-adaptive variable tillage width micro-tiller cutter rest comprises a cutter head and tillage cutters, wherein the cutter head is connected with a power source through a connecting mechanism; sliding grooves are formed in the cutter head; springs and sliding blocks are mounted in the sliding grooves; one end of each the spring is connected and fixed with each the sliding block, the other end is connected and fixed with one end of each the sliding groove, and the sliding blocks slide in the sliding grooves under the action of the springs; and plowing knifes are mounted at the lower end of the slidingblocks. The device has the following advantages: 1. the cutter rest can be applied to multiple vegetable growing pots; 2. a fixing plowing knife is designed in the middle of the cutter head, which can work at the middle leaking plowing place; 3. the cutter rest is simple in structure, high in working efficiency and strong in practicability; 4. the cutter head is designed according to the characteristics of soil movement when the machine is operating, to some extent, the disc structure can act as a soil retaining plate; and 5. the operation efficiency is improved.
Owner:JIANGXI AGRICULTURAL UNIVERSITY

A transparent soil model test device and test method for simulating soil lateral movement

ActiveCN107227759BRealize visual measurementSmall sizeFoundation testingLaser transmitterSoil science
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.
Owner:重庆大学建筑规划设计研究总院有限公司

Soil Throwing Device and Planter after Sowing Wide Seed Belt

ActiveCN112042299BEnsure seeding uniformityEnsure broadcast depth consistencySpadesPloughsSeederSoil science
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.
Owner:NANJING AGRI MECHANIZATION INST MIN OF AGRI

A multifunctional device for monitoring geological environment in coal mining subsidence area

ActiveCN113091826BImprove smoothnessFacilitate follow-up inspection workProgramme controlComputer controlWater sourceMining engineering
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.
Owner:山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队)

Three-section type lifting board rotary kiln device suitable for direct thermal desorption of organic contaminated soil, and using method thereof

PendingCN114082774AEfficient repairVisualization of the repair processContaminated soil reclamationSoil remediationControl system
The invention provides a three-section type lifting board rotary kiln device suitable for direct thermal desorption of organic contaminated soil. The device comprises a direct thermal desorption kiln, a heating system, a centralized control system, a temperature detection devices, a tail gas treatment system, a soil feeding system and a soil discharging system. The heating system, the centralized control system, the temperature detection devices, the tail gas treatment system, the soil feeding system and the soil discharging system are all connected with the direct thermal desorption kiln. Engineering parameters in the thermal desorption process can be adjusted according to different pollution degrees and pollution characteristics, energy consumption is effectively reduced, and the heating rate is increased; and the flowing direction of air in the cavity is consistent with the moving direction of soil, and the air makes direct contact with the soil. The interface is connected with a tail gas collection and treatment device, and the plurality of temperature detection devices and the centralized control system are used for controlling data acquisition, so that the organic contaminated soil remediation process is more efficient, low in energy consumption and visual.
Owner:CHINA JILIANG UNIV

Device for preventing backward soil movement in construction by using rectangular jacking pipe and construction method of device

PendingCN108457660AImprove construction efficiencyImproving the quality of tunneling engineeringTunnelsFriction forceSoil movement
The invention belongs to the technical field of underground engineering construction, and particularly relates to a device for preventing backward soil movement in the construction by using a rectangular jacking pipe and a construction method thereof. The backward soil movement phenomenon is effectively prevented that a pipe section of the jacking pipe and a machine head of a jacking pipe tunneling machine can drive soil on the jacking pipe and the heading machine to move forwards due to excessive friction force. The device comprises a plurality of extension devices arranged at the front end or shield tail of a rectangular jacking pipe machine, each extension device comprises a flexible isolation strip, and reserved groove seams are formed in the portion, above the extension devices, of the top of the rectangular jacking pipe machine; a hole door in the jacking direction of the rectangular jacking pipe machine is further provided fixture bodies matched with the flexible isolation strips on the extension devices, and fastening devices are arranged on the side walls in the reserved groove seams and provided with flexible sealing brushes; the rectangular jacking pipe machine is further provided with a grease pump. By means of the device for preventing backward soil movement in the tunnel excavation by using the rectangular jacking pipe and the construction method thereof, the soillayer environment above a jacking pipe tunnel is effectively ensured, and the construction safety of enterprises is improved.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Large-diameter shield soil body movement convergence model and calculation method thereof

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.
Owner:CHANGZHOU INST OF TECH

Manufacturing method of visbreaking bionic plough body

The invention discloses a manufacturing method of a visbreaking bionic plough body, which comprises the following steps: (1) designing a plough body curved surface by a horizontal straight element line method; (2) designing a bionic surface visbreaking plough wall structure: I, observing and measuring body surface forms of pangolin and dung beetles, extracting surface contour structures, combining the contour structures, combining the scale triangular arc-shaped structure of the body surface of the pangolin with the convex hull structure of the body surface of the dung beetle, and amplifying the size of the surface contour structure in proportion; II, arranging the body surface contour structures obtained through die stamping sequentially on the plough wall along soil traces; (3) embedding wear-resistant visbreaking materials into grid bars of the plough body; and (4) uniformly arranging cylindrical structures on the surface of the plow shovel tip along the soil movement direction, and forming pits on the surfaces of the cylindrical structures. According to the semi-spiral plough body curved surface based on the horizontal straight element line method, a visbreaking plough body surface structure is designed in a bionic mode, abrasion-resistant visbreaking materials are embedded into the surface of the plough body, and the visbreaking phenomenon during plough body cultivation is improved.
Owner:XINJIANG ACADEMY OF AGRI & RECLAMATION SCI
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