148 results about "Deformation mechanism" patented technology

The invention is suitable for the technical field of earth surface monitoring, and provides an earth surface deformation monitoring method and system based on a time sequence InSAR, and the method comprises the following steps: carrying out the SAR image screening and interferogram generation, and collecting corresponding meteorological data and thermal infrared data; performing space-time adaptive atmospheric phase correction, taking the air pressure vertical gradient and the temperature anomaly as driving factors of atmospheric delay, and separating an atmospheric phase through a space-time weighted model; dynamic deformation modeling is carried out, and deformation is decomposed into linear deformation and nonlinear deformation; the method comprises the following steps: taking a mining area road network as a geometric constraint, unwrapping a coherent region by adopting a minimum cost flow algorithm, converting an unwrapping phase into sight-line-direction deformation, and calculating horizontal and vertical deformation components in combination with InSAR sight-line-direction deformation and a digital elevation model. The method adapts to a complex deformation mechanism of a mining area by capturing linear and nonlinear deformation. Through sight line deformation and DEM geometric projection, vertical and horizontal deformation separation is realized, and the deformation direction is determined.

The invention relates to the technical field of deep foundation pit monitoring, and discloses a deep foundation pit micro-deformation InSAR remote sensing method and system and a storage medium. The method comprises the following steps: synchronously acquiring data through a ground radar and an InSAR satellite, and obtaining a point target set and an original scattering characteristic sequence; obtaining a net deformation phase sequence without influence through registration residual correction, phase deduction and weighted fusion processing, and carrying out phase consistency quality control and unwrapping processing to obtain an accumulated deformation quantity sequence; constructing a deformation mechanism correlation characteristic matrix based on correlation analysis of the cumulative deformation quantity sequence and radar reflection intensity amplitude attenuation characteristics; and fusing the deformation mechanism correlation feature matrix and the real-time differential interference image group, extracting deformation rate and phase gradient change, and further generating a deep foundation pit local micro-deformation risk early warning index set. According to the invention, the tiny deformation of the surrounding area of the foundation pit can be effectively detected, potential risks are warned in advance, and the safety and monitoring efficiency in the construction process are improved.

The invention relates to the field of cable cabling, in particular to density-adjustable cabling equipment and a control method thereof.The cabling equipment comprises a feeding mechanism, a pre-deformation mechanism, a bundling mechanism and a control unit; the feeding mechanism comprises a first guide disc driven by a driving unit to rotate, a main unwinding wheel used for unwinding a main wire core and a plurality of auxiliary unwinding wheels used for unwinding stranded cables. The pre-deformation mechanism comprises a pre-deformation device, and the pre-deformation device is provided with a first diameter measuring unit and a second diameter measuring unit; the bundling mechanism comprises a box body and a pulling piece, the distance between the box body and the pre-deformation mechanism is adjustable, a cabling through hole for a main cable core to penetrate through is formed, and the control unit can calculate a target spiral angle of the stranded cable under the condition that the preset distance is met, and further calculates the rotating speed of the first driving unit and the pulling speed of the pulling piece; according to the invention, the cabling process can be accurately controlled, the cable coating density can be flexibly adjusted, the cabling quality can be guaranteed, and the production reliability can be improved.

The invention provides a copper foil thickness analysis method and device. The copper foil thickness analysis method comprises the steps that tension values of all layer number positions and thickness measurement results of the corresponding layer number positions in the copper foil winding process are obtained; analyzing a deformation mechanism by combining the obtained interlayer relative displacement and torsion angle according to the compression deformation analysis result to obtain stress distribution mode data; compensating thickness measurement data based on the stress distribution mode data to obtain compensated thickness measurement data; setting a normal thickness range and an anomaly judgment threshold based on the compensated thickness measurement data, and determining a sensitivity identification threshold parameter of thickness anomaly detection; judging a thickness anomaly state according to the sensitivity identification threshold parameter of the thickness anomaly detection to obtain a thickness anomaly detection result; and in combination with the thickness anomaly detection result and historical winding process thickness measurement data, thickness anomaly detection combination parameters are determined.

The invention discloses an arch dam aging deformation mechanism analysis method, and relates to the field of hydraulic structure safety. The method comprises the steps that based on three-dimensional terrain and geological data, a high-precision arch dam-foundation overall finite element mesh model is established, concrete materials and permeation partitions are divided carefully, and an anti-seepage and drainage system structure is embedded; by means of multi-source monitoring data, real boundary conditions such as water temperature and air temperature and thermodynamic parameters are dynamically recognized and optimized through the intelligent inversion technology; respectively analyzing the aging influence of single factors such as a temperature field and valley amplitude deformation on arch dam deformation by adopting finite element simulation; on the basis of the normalized deformation response data, a Bayesian optimized long-short-term memory neural network and a hierarchical correlation propagation algorithm are adopted, contribution weights of all factors to deformation are calculated, and weight rationality is verified through global sensitivity analysis. According to the method, quantitative separation and evaluation of the main deformation influence effect of the arch dam are realized, and a theoretical basis can be provided for structural health monitoring and safety management.

The invention relates to the technical field of welding, and discloses a complex sheet metal frame cabinet tailor-welding method which comprises the following steps: S1, splitting: assembling an upper frame, a lower frame and a middle stand column according to a design structure of a frame cabinet; s2, bending is conducted, specifically, corners of the upper frame, the lower frame and the middle stand column are bent; s3, splicing is conducted, specifically, the upper frame, the lower frame and the middle stand columns are spliced into a frame, and the middle stand columns are clamped in the bent positions; and S4, welding is conducted, specifically, the spliced exposed parts of the upper frame, the lower frame and the middle stand column are welded. Through the four-step process of modular splitting, precise bending, mechanical interlocking and flat welding optimization, an innovative frame of mechanical positioning and then welding fixing is constructed, welding deformation is controlled from the source, the assembly consistency is improved, mechanical structure design and the welding process are deeply coupled, and the welding efficiency is improved. And a dual anti-deformation mechanism of physical interlocking constraint and welding heat input control is formed.

The invention discloses a sintering model construction method and system for ceramic material densification parameter prediction, and relates to the technical field of material science. The method comprises the following steps: quantitatively describing a deformation mechanism of a ceramic material in a sintering process based on continuum mechanics; constructing a sintering model according to the quantitatively described deformation mechanism and densification mechanism of the ceramic material; densification parameters in the sintering process are determined, and the optimal densification parameters are predicted through the sintering model; and calculating the relationship between the instantaneous relative density and the height change of the pressed blank, and verifying the prediction result of the sintering model according to the relationship between the instantaneous relative density and the height change of the pressed blank. According to the method, the macroscopic densification rate and the relative density in the sintering process can be accurately simulated and predicted by constructing the sintering model.

The invention discloses a twin crystal nucleation position and variant selection prediction method based on machine learning, and belongs to the crossing field of material science and machine learning. The method comprises the following steps: acquiring microscopic structure data of a deformation material through electron back scattering diffraction, and constructing a multi-dimensional data set containing crystal grain parameters, crystal boundary parameters and deformation mechanism parameters by taking crystal grains and a certain crystal boundary combination as an analysis unit; and then modeling and predicting the twin crystal nucleation position and variant selection respectively by adopting a hierarchical machine learning modeling strategy. According to the method, the twinning behavior in the polycrystalline material can be efficiently and accurately predicted, and theoretical support and a technical path are provided for high-performance metal material design and plastic deformation mechanism research.

The invention belongs to the technical field of damping walls, and particularly relates to a novel high-performance viscous damping wall which comprises a channel steel box used for containing viscous liquid and arranged between an upper damper connecting wall pier and a lower damper connecting wall pier and a damping body vertically placed in the channel steel box and connected with the damper connecting wall piers. A plurality of metal plates are arranged in the vertical direction of the channel steel box in an array mode, and anti-deformation mechanisms movably connected with the two ends of the bottoms of the metal plates in a sleeving mode are arranged on the side faces of the two ends of the inner bottom of the channel steel box. According to the novel high-performance viscous damping wall, through the arrangement of the anti-deformation mechanism, when the damping wall is subjected to vibration in different directions or the instantaneous vibration deformation force is too large, the metal plate can elastically displace in time in the thickness direction of the channel steel box, and the problem that the metal plate is in rigid contact with the damping body and deforms is solved.

The application discloses a kind of porous metal deformation mechanism acoustic emission online identification method, device and electronic equipment, including collection porous metal material acoustic emission signal and characteristic parameter data and pre-processing, obtain each acoustic emission signal feature vector;Determine the loss function of porous metal material deformation, build acoustic emission machine learning classifier candidate model;Train multiple different parameters machine learning classifier candidate model;Evaluation and optimization are carried out, and preferred machine learning classifier model is selected;Preferred machine learning classifier model is applied to online identification of the deformation mechanism of porous metal material acoustic emission signal.This method can be combined with the loss function determined based on the distribution characteristics of acoustic emission signal of different deformation mechanisms, build machine learning classifier model, have the characteristics of not needing label data and high identification accuracy and effectiveness.

The invention relates to a low-fault-energy micro-twin synergistic deformation cobalt-based alloy and a preparation method thereof, and belongs to the field of cobalt-based high-temperature alloys. According to the alloy, on the basis of Co-Al-W, Ti and Ta which are smaller than or equal to 4 wt% are added according to calculation of a first principle, and the stacking fault energy is controlled to be-95 mJ / m < 2 > to-89 mJ / m < 2 > (0K). Aiming at the defect of insufficient high-temperature plasticity of the gamma '-phase strengthened cobalt-based alloy, an electronic structure is accurately regulated and controlled through a first principle, intrinsic stacking fault energy is designed to reach an optimal negative value interval, a micro-twin mechanism is activated, dislocation slippage and micro-twin coordination is realized, and the problem of sudden plasticity drop caused by single deformation mechanism (dislocation slippage leading) and grain boundary weakening of a traditional alloy is solved; the high-temperature strength and the plasticity are synchronously improved.

The utility model relates to the technical field of coal mine tunnel supporting, and discloses a pre-tightening force adjustable counter-pulling anchor rod supporting device which comprises an anchor rod main body, adjusting rods are fixedly connected to the two ends of the anchor rod main body, the outer walls of the two adjusting rods are sleeved with tray assemblies, and the outer walls of the adjusting rods are in threaded connection with fixing nuts; the outer wall of the fixing nut is fixedly connected with a fixing disc, an adjusting assembly is installed on the outer wall of the fixing disc, and through the design of the adjusting assembly, an operator can rotate the handle to drive the gear ring to rotate, then the gear and the adjusting nut are made to rotate, and driving of the screw rod is achieved; finally, the position of the tray assembly is flexibly adjusted to change the pre-tightening force of the anchor rod, the pre-tightening force can be adjusted in time according to the real-time deformation condition of the surrounding rock through the adjusting mode, a cooperative deformation mechanism between a supporting body and the surrounding rock can be effectively exerted, and compared with the problems that a traditional opposite-pulling anchor rod is single in pre-tightening force applying mode and cannot adapt to the complex environment, the anchor rod pre-tightening force applying mode is simple. The method has obvious advantages.

The application discloses a design method of a high-maneuverability control characteristic gliding wave-riding aircraft, and the design method comprises the following steps: step one, selecting a conical wave-riding body as a basic configuration of the aircraft, wherein the wave-riding body comprises a fixed section aircraft body and variable side front edges located on the left and right sides of the fixed section aircraft body, the variable side front edges can be rotated into the fixed section aircraft body, the left and right variable side front edges are respectively denoted as a left variable side front edge and a right variable side front edge; step two, determining a front edge line of the wave-riding body; step three, determining the height and curvature of the upper surface of the wave-riding body; step four, determining the maximum distance from the upper surface of the wave-riding body to the lower surface of the fixed section aircraft body; and step five, designing the variable side front edges; the application greatly adjusts the lift-drag ratio of the wave-riding aircraft body, improves the utilization rate of the internal volume of the aircraft, and makes the wave-riding aircraft have comprehensive maneuvering characteristics of pitching, yawing and rolling by using a simple rotating deformation mechanism.

The application discloses a kind of time sequence multidimensional point cloud deformation identification method, system, electronic equipment and storage medium, wherein time sequence multidimensional point cloud deformation identification method includes: based on the surface of measured object of the multiple frames of point cloud of deformation occurrence, construct time sequence multidimensional point cloud;Grid time sequence multidimensional point cloud;After grid time sequence multidimensional point cloud, point deformation tracking is carried out gradually;Based on deformation tracking result, establish the point pair matching relationship of time sequence multidimensional point cloud;Based on point pair matching relationship, construct local deformation descriptor and global deformation descriptor, to identify the surface deformation process of measured object.This application is applied to small scene fine full-field deformation identification, by constructing local and global deformation descriptor in time sequence multidimensional point cloud, provide a comprehensive and complete identification method for the deformation of object surface, accurately depict the whole process of the surface deformation of measured object from local and global angle, better reflect deformation law, reveal deformation mechanism and characteristics.

The invention provides a matching automation and key structural member checking optimization method of a test bench. The method comprises the following steps: S1, carrying out structure module division on a test bench system; S2, constructing a parameter driving model deformation mechanism; S3, establishing an assembly body automatic generation mechanism; s4, naming a surface attribute and a body attribute of the model in the CAD model, wherein the surface attribute and the body attribute are used for identifying an applied load, a boundary condition and a material attribute; s5, constructing a simulation automation process; S6, identifying a weak area of the structure based on a simulation analysis result, and performing optimization; and S7, the optimization process is iterated until the structural strength, rigidity and assembly requirements are met, and a final rack adaptive structure scheme is output. According to the method, efficient design under the requirements of multiple working conditions can be achieved, the design precision and the stability and safety of key structural components are remarkably improved, powerful assistance is provided for design and manufacturing of a test bed, and technical progress and innovative development of related industries are promoted.

The utility model discloses an anti-deformation strong weatherability foldable skeleton, concretely relates to bed accessory technical field, including first frame and second frame, one side of the first frame is provided with the second frame in parallel, the left and right ends of the upper side of first frame and the second frame are symmetrically provided with skeleton buckles through welding, and the skeleton buckles are provided with the first frame and the second frame. A multi-layer supporting structure is formed by arranging an anti-deformation mechanism, a plurality of supporting seats, a first supporting rod and a second supporting rod in the frame in a matched mode, and when the skeleton is stressed, the structure can evenly disperse pressure, prevent bending deformation and improve the stability of a bed body, so that a user can sleep more comfortably; the hinges are arranged at the joints of the first frame and the second frame and are fixed by the fastening screws, so that the skeleton can be folded, the occupied space can be reduced by folding during transportation, and the cost is reduced; and storage is convenient during storage, so that great convenience is brought to a user.

The application discloses a deformable bionic water-air amphibious bionic robot, which is composed of a bionic body, a deformation mechanism and a driving system. The bionic body combines the streamlined structure of fish and the efficient aerodynamic shape of birds, and the deformation mechanism realizes efficient switching between fish and bird shapes. The driving system cooperates with the rudder and the propeller to realize water swimming propulsion and air flight propulsion respectively. The robot has high flexibility and excellent motion performance, and is suitable for disaster rescue, environmental monitoring, unmanned and anti-unmanned reconnaissance and other fields, and provides an innovative solution for complex environment operation tasks.

The utility model relates to the technical field of hardware, and discloses an anti-deformation indentation device for hardware processing, which comprises a machine body, an adjusting mechanism is arranged on the surface of the machine body, an anti-deformation mechanism is arranged on the surface of the machine body, and a damping mechanism is arranged below the machine body. According to the anti-deformation indentation device for hardware machining, by arranging the adjusting mechanism, in the anti-deformation indentation machining working process of the anti-deformation indentation device for hardware machining, a handle is used for driving a rotating shaft to rotate, a gear drives a rack to move, and the rack drives a connecting block to move; the height of the connecting block can be further adjusted, and the situation that in the working process of machining the hardware for preventing deformation and indentation, due to the fact that the sizes and specifications of the hardware are different, when the hardware is machined, the phenomenon that the hardware is not attached in the machining process, and then the hardware is deformed or indented is avoided. Therefore, the practicability of the anti-deformation indentation device is greatly reduced.

The invention belongs to the technical field of ceramic material preparation, and discloses a ceramic material sintering process optimization method and system based on a grain growth dynamic model, and the method comprises the following steps: quantitatively describing a deformation mechanism of a ceramic material in a sintering process based on continuum mechanics; constructing a grain growth kinetic model according to the quantitatively described deformation mechanism of the ceramic material and the grain size estimation model at the final stage of sintering; determining grain growth parameters in the final stage of sintering, and predicting the grain size by using a grain growth kinetic model; calculating the relationship between the grain size and the relative density and the sintering temperature, and verifying the calculation result of the grain growth kinetic model according to the experimental result of the grain size and the relative density; the change from low temperature to high temperature behavior is simulated through a Sigmodal function, the slope (derivative) of the function is calculated, and the temperature transition point of grain growth is obtained. And the temperature transition point of the grain boundary mobility from high to low can be accurately determined.

The invention discloses a high-toughness refractory high-entropy alloy based on a hafnium element addition regulation and control deformation mechanism, the general formula of the high-entropy alloy is HfxNbTaTiZr, and x is more than or equal to 0.5 and less than or equal to 1.5; according to the high-entropy alloy, under the low-temperature and high-strain-rate deformation condition, dislocation slippage and twist belt nucleation and expansion are taken as main parts of a microscopic deformation mechanism, in addition, the invention further discloses a preparation method of the high-entropy alloy, and the preparation method comprises the steps that firstly, raw materials are prepared and weighed; 2, vacuum arc melting; (3) vacuumizing; 4, gas washing and argon filling; and 5, arc starting smelting is conducted, and the high-entropy alloy is obtained. According to the HfxNbTaTiZr high-strength and high-toughness refractory high-entropy alloy based on a hafnium element addition regulation and control deformation mechanism provided by the invention, on the premise of ensuring excellent retention of strength, the dynamic toughness of a material is remarkably improved, collaborative optimization of toughness performance is realized, and the defect that the toughness of existing NbTaTiZr and other refractory high-entropy alloys is insufficient under low-temperature and high-speed impact is overcome.

The purpose of the present invention is to provide: a grinding method for a semiconductor crystal, with which it is possible to achieve higher grinding accuracy by more precisely and minutely managing plastic deformation as a plastic deformation mechanism of an end surface of a semiconductor crystal ingot or a wafer surface; and a grinding wheel for grinding, which is used in the grinding method. In a grinding method for an Si wafer 100, due to a grinding wheel 53 and a pressing force for pressing the wafer 100 against the grinding wheel 53 via a spindle 51, a plastic deformation region 100A is formed on the surface of the wafer 100 by a temperature rise that is caused by friction with the grinding wheel 53, and the plastic deformation region 100A is ground by the grinding wheel 53 while performing functional polishing of the surface of the plastic deformation region 100A by having the grinding wheel 53 contain a functional additive.

The utility model relates to the technical field of ice-making devices, in particular to a water-leakage-proof ice-making device. The water leakage prevention ice making device comprises a shell, the shell is provided with an ice making mechanism, a driving mechanism for driving the ice making mechanism to be opened or closed and a deformation mechanism connected to the driving mechanism, and the ice making mechanism comprises a first mold shell, a second mold shell and an ice making cavity defined by the first mold shell and the second mold shell; the driving mechanism comprises a rotating shaft connected with the first mold shell and the second mold shell, and a driving part connected to the second mold shell, and when the second mold shell rotates relative to the first mold shell along the rotating shaft and is in a closed state, the deformation mechanism partially or completely having elasticity is in a closed state through the rotating shaft and / or the driving part; and the second mold shell is driven to be tightly closed towards the direction of the first mold shell. According to the mold, the sealing performance after the first mold shell and the second mold shell are closed can be improved, liquid is prevented from leaking out of a gap between the first mold shell and the second mold shell, and it is guaranteed that the size and quality of ice blocks are consistent.

The utility model belongs to the field of cutting wire manufacturing equipment, and particularly relates to a cutting wire deformation device which comprises a first deformation mechanism, a screw mechanism, a second deformation mechanism and a traction mechanism which are sequentially arranged, the first deformation mechanism comprises a pair of first gears meshed with each other, and the second deformation mechanism comprises a pair of second gears meshed with each other. The connecting line of the midpoint of the distance between the axes of the pair of first gears and the midpoint of the distance between the axes of the pair of second gears is collinear with the axis of the screw mechanism. The cutting device has the advantages that the screw mechanism is arranged on the advancing path of the cutting wire, so that the cutting wire is naturally twisted and deformed when advancing along threads of the screw mechanism, a spiral structure is further formed, an independent rotating mechanism does not need to be arranged, the structure is simpler, and the equipment cost is reduced.

This utility model relates to the field of building facade reinforcement technology and discloses a wall insulation reinforcement mechanism. The mechanism includes a cement board with a cement adhesive for connection to the building wall on one side. An anti-deformation mechanism is also provided on one side of the cement board via an anchoring component. The anti-deformation mechanism includes two sets of extruded polystyrene (XPS) insulation boards on one side of the cement board. The XPS insulation boards have installation grooves on their outer sides, with trapezoidal cross-sections. After installing the two sets of XPS insulation boards, a polyurethane foaming agent is sprayed to fill and seal the joints. When temperature changes cause thermal expansion and contraction of the XPS insulation boards and shape memory polyurethane sealing strips, the deformation cavity within the shape memory polyurethane sealing strip provides buffering, preventing rigid compression cracking. The polyurethane foaming agent can slightly expand and contract to maintain the seal, solving the problem of joint cracking caused by temperature deformation of the insulation board.

The invention discloses an expansive soil slope hydrothermal control active area identification method. The method comprises the following steps: acquiring a vertical deformation time sequence of each pixel of a target area and a rainfall time sequence of a corresponding time period; processing the two groups of time sequences, and extracting periodic response characteristics representing the moisture-driven deformation process; constructing a hydrothermal transfer model reflecting a swelling soil moisture diffusion mechanism and a depth integral deformation mechanism so as to establish a physical mapping relation between theoretical prediction response characteristics and normalized active area depth; and substituting the periodic response characteristics into a hydrothermal transfer model to carry out inversion matching solution, and calculating the total depth of the active area of each pixel in combination with a pre-calibrated moisture diffusion coefficient. According to the method, the theoretical upper limit of depth inversion of a traditional single-layer time domain model is effectively broken through, and accurate physical quantitative recognition of the depth of the active area under the complex hydrothermal boundary is achieved.

The invention discloses a method for preparing a dual-phase heterogeneous deformation mechanism tin bronze alloy through stacking fault energy-oriented Sn content regulation and control and the alloy, and relates to the technical field of metal materials. The method comprises the following steps: determining a critical component window of a low-Sn glide region and a high-Sn twinborn region on the basis of an influence rule of Sn content on an alpha-Cu solid solution stacking fault energy and a deformation mechanism; through the combination of melt instantaneous cooling induced nucleation and a rheological extrusion forming process, the synergistic distribution of two phases on the microscopic scale is realized in the tin bronze alloy. In the plastic deformation process of the obtained tin bronze alloy, dislocation slippage is used as a dominant deformation mechanism in a low-Sn area, mechanical twinning is used as a dominant deformation mechanism in a high-Sn area, and a heterogeneous deformation coordination mechanism is formed. The alloy prepared through the method shows excellent strength and toughness, and therefore a new path is provided for design and preparation of the high-performance copper alloy.

The invention provides an ultrasonic endoscope probe with a deformation structure, and relates to the technical field of ultrasonic probes, the ultrasonic endoscope probe comprises an ultrasonic device, one end of the ultrasonic device is fixedly provided with a deformation pipeline, a pipe body of the deformation pipeline adopts a multi-section hinged structure, one end of the deformation pipeline is fixedly provided with an ultrasonic probe, and the other end of the deformation pipeline adopts a multi-section hinged structure; an ultrasonic probe is fixedly installed at one end of the deformation pipeline, an ultrasonic head endoscope is arranged below the ultrasonic probe, at least five LED lamp beads are arranged on the side face of the ultrasonic probe, and a deformation mechanism is arranged at one end of the ultrasonic device. By arranging a deformation pipeline which adopts a multi-section hinged structure and is made of a superelastic nickel-titanium alloy composite material, and a deformation mechanism which comprises an operating handle, a servo motor in an ultrasonic device, a tongue bone joint, a supporting pipeline and a driving rope, the deformation pipeline can be bent into a shape matched with an inner cavity before equipment enters the body of a patient; and the stimulation to the cavity when entering the body is reduced.

A kind of calculation analysis method based on pipe roof pore-forming disturbance caused ground settlement, comprising: step S1: analysis the deformation mechanism and stress of pipe roof, set up calculation model;Step S2: according to the calculation model and construction condition, obtain tunnel depth and soil structure parameters;Step S3: pipe roof is approximated as small hole tunnel, and Peck formula is used for calculation;Step S4: the Peck formula for calculating ground settlement is used to calculate the ground settlement caused by pipe roof pore-forming disturbance, and multiple pipe roofs are replaced by large circle, and multiple small holes are associated;Step S5: determine the disturbance coefficient between pipe roofs, select measured data fitting;Step S6: considering the bending and compression deformation of pipe roof itself, and corresponding formula is proposed, and the displacement change of pipe roof structure is calculated.The present application can not only obtain the strata loss influence caused by advanced pipe roof pore-forming on upper strata more quickly and simply, but also can calculate the ground settlement caused by stress release when pipe roof pore-forming of shallow-buried tunnel.

The invention discloses a large thin-wall wind driven generator shell clamping device, which belongs to the technical field of machining equipment, and comprises a workbench and a flexible enclasping anti-deformation mechanism, the flexible enclasping anti-deformation mechanism comprises a radial adjusting assembly and an axial adjusting assembly. The radial adjusting assembly comprises a plurality of first telescopic driving elements, a plurality of anti-deformation fixing plates and an adjustable supporting pipe, and the first telescopic driving elements and the anti-deformation fixing plates are sequentially connected end to end to form a ring and are arranged at intervals in the circumferential direction; the first telescopic driving elements and the anti-deformation fixing plates which are adjacent in the circumferential direction are rotationally connected, and the rotating shafts are parallel to the axial direction of the workpiece. The telescopic part of the adjustable supporting pipe is connected with the first telescopic driving element or the anti-deformation fixing plate; the axial adjusting assembly is installed on the workbench and fixedly connected with the fixing part of the adjustable supporting pipe, and the axial distance between the radial adjusting assembly and the workbench can be adjusted. The large thin-wall wind driven generator shell can be supported, deformation caused by machining is prevented, and the machining efficiency and the machining quality are improved.