98 results about "Rock structure" patented technology

The invention provides a bedding structure rock finite element model reconstruction method based on a rock core digital image, and belongs to the technical field of digital rock cores, and the method comprises the following steps: S1, obtaining a gray level image of a rock sample; s2, calculating a transverse mean value of the analysis area to obtain a longitudinal gray level distribution curve; s3, applying moving average filtering and smooth filtering to obtain a smooth gray curve; s4, first-order difference is carried out on the smooth gray level curve, the position with the absolute difference value larger than a threshold value is taken as an initial stripe boundary candidate, and starting and stopping pixels, the width and the average gray level of each stripe are determined; s5, mapping each clustering label interval into a physical interval based on FEM grid partition; and S6, constructing a sample finite element model, and generating a reconstructed finite element model with real partition information. According to the method, the macrostructure features of the rock can be efficiently recognized and extracted by directly utilizing the pictures and combining gray profile analysis, and efficient and low-cost reconstruction of the finite element model of the bedding structure rock is achieved.

The invention discloses a roadway roof damage time prediction method and system, and belongs to the technical field of mine rock mechanics and safety engineering. Comprising the following steps: recognizing a roof rock stratum structure and lithology of each layer through drilling peeping, and drilling a representative rock sample; determining the crack initiation strength and peak strength of the rock sample through a uniaxial compression test; selecting a plurality of stress levels between the axial strain and the acoustic emission signal to carry out a creep test, synchronously monitoring the axial strain and the acoustic emission signal, and determining an accelerated creep starting moment as the damage time under the stress according to the abrupt change characteristics of the axial strain and the acoustic emission signal; establishing a stress-failure time relation model of each lithology; finally, selecting a corresponding model to predict the damage time of rocks at different layers of the roof according to the actual rock stratum structure and ground stress state of the roadway; according to the method, accurate and reliable time prediction of the progressive damage process of the roadway roof is realized.

The invention discloses a rock quality index calculation method, system and device and a medium, and the method comprises the steps: determining a three-dimensional point cloud in response to a rock mass quality index calculation request; determining three-dimensional point cloud reconstruction data based on the distance between the three-dimensional point cloud and the fitting plane, and generating a three-dimensional point cloud image based on the three-dimensional point cloud reconstruction data; segmenting a surrounding rock structural surface of the three-dimensional point cloud picture; constructing a first roadway surrounding rock three-dimensional body which does not contain a surrounding rock structural surface; determining a second area corresponding to the surrounding rock structural plane in the three-dimensional point cloud reconstruction data according to the first area of the surrounding rock structural plane in the three-dimensional point cloud picture, and fitting the three-dimensional point cloud reconstruction data of the second area to form a structural plane equation; segmenting the first roadway surrounding rock three-dimensional body for the first time according to a structural plane equation to obtain a second roadway surrounding rock three-dimensional body containing a surrounding rock structural plane; the second roadway surrounding rock three-dimensional body is subjected to second segmentation, the rock mass quality index is calculated according to the second segmentation result, and high efficiency and lossless measurement of the rock mass quality index can be achieved.

The invention discloses a full-space active and passive reinforced supporting method for a deep roadway, and relates to the technical field of deep roadway supporting. The method comprises the following steps: S1, obtaining a roadway surrounding rock structure, ground stress and surrounding rock physical and mechanical parameters; s2, determining the ranges of a broken area, a plastic area and an elastic area of the surrounding rock of the deep roadway; s3, variable-diameter pressure relief drill holes are constructed to reduce the surrounding rock stress; s4, an anchor net is supported, and concrete is sprayed to block the surface of the surrounding rock; s5, grouting reinforcement is conducted, and anchor rod cables are installed; s6, a full-space concrete filled steel tube support is erected; and S7, a roadway bottom plate is poured, and concrete spraying is conducted on the surface of the surrounding rock so that the support can be embedded. According to the surrounding rock control method, active bearing of the roadway surrounding rock and passive supporting of the full-space support can be effectively coordinated, the cooperative bearing capacity of the deep roadway can be improved, and safety and stability of the deep roadway are guaranteed.

The invention relates to the technical field of tunnel construction, in particular to a dust falling device and method based on machine vision, and the dust falling device comprises a surrounding rock structural surface intelligent recognition device, an anchoring assembly, a sliding rail assembly, an atomization assembly, a vision device, a dust concentration instrument, a four-in-one gas monitor, a phase Doppler particle analyzer and a control device. The anchoring assembly is detachably installed on the top wall of a tunnel, the sliding rail assembly is connected to the anchoring assembly, the sliding rail assembly is arranged in the axial direction of the tunnel, the atomization assembly is connected to the sliding rail assembly, the atomization assembly is connected to the sliding rail assembly, and the atomization assembly is connected to a tunnel water pipe. The intelligent recognition equipment for the surrounding rock structural plane is mounted at a position close to a tunnel face in a tunnel. The technical problems that in the prior art, tunnel blasting and dust falling equipment always operates independently, and effective coordination and intelligent control are lacked are solved.

The invention provides a rapid evaluation method for shear strength of a rock structural plane under normal disturbance, and belongs to the technical field of geotechnical engineering and rock mechanics, the method comprises the following steps: S1, sample preparation and initial parameter acquisition; s2, normal disturbance direct shear test; s3, fitting test data and establishing an empirical model; and S4, rapidly evaluating the shear strength. According to the method, by introducing a normal disturbance stress parameter, an empirical calculation formula capable of rapidly predicting the shear strength after disturbance is established, and key parameters are provided for engineering design and stability analysis.

The invention discloses a distributed rock stress real-time inversion method and system, and the method comprises the steps: discretizing a target region rock structure through a discontinuous structure stress field model, collecting parameters, and constructing a geological-physical constraint inversion frame; initial stress tensor distribution is obtained by applying a seismic source mechanism solution and a stress tensor linear inversion algorithm, and optimization is carried out in combination with a constraint framework; distributed rock stress parameters are introduced to establish a mapping relation to invert initial distribution, and real-time updating is achieved through continuous data collection and repeated processing. The system comprises a plurality of association units which respectively execute the functions of discrete acquisition, framework construction, inversion optimization and the like. According to the method and the system, the geological-physical constraint quantification accuracy is improved, the problem that a real-time updating mechanism is incomplete is solved, the accuracy, comprehensiveness and efficiency of inversion are improved, and reliable technical support is provided for geological engineering, disaster early warning and the like.

The application discloses a white granite type high-purity quartz purity prediction method and application thereof, and belongs to the technical field of rock purity prediction. The prediction method encodes and assigns one or more prediction parameters, such as main mica types, rock structures, rock structures, feldspar types, quartz types, solid inclusions, liquid inclusions, solid inclusion quantity, aluminum impurity element content grading, titanium and lithium element content grading, calcium and phosphorus element content grading, potassium and sodium element content grading and grain factor grading, and then predicts the quartz purity in the ore based on a random forest classifier prediction model or a support vector machine prediction model. The comparison between the actual measurement and the prediction result proves that the prediction method has accurate and reliable prediction results, realizes the replacement of manual detection by artificial intelligence prediction, greatly reduces the manpower and material resources, and provides an efficient and accurate prediction method for quartz purity prediction.

The invention relates to the field of water seal oil storage caverns, in particular to an underground water seal oil storage cavern main cavern water seepage amount control method which comprises the steps of tunnel face and side wall grouting, bottom plate grouting, pump pit grouting and sporadic apron grouting. A Fahrenheit grouting pump and a single-liquid pump are combined for grouting and plugging fractures, stable grouting of grout is guaranteed through the low pulsation characteristic of the Fahrenheit grouting pump, disturbance to a rock mass structure is reduced, and the grout can permeate and diffuse along the tiny fractures instead of splitting rock mass; the grouting pressure of the single liquid pump is large, grouting of a deep hole can be achieved, uniform and stable grout is conveyed by the single liquid pump, and continuity and safety of grouting operation are guaranteed. A Fahrenheit grouting pump and a single-liquid pump are combined for grouting and plugging cracks, effective plugging of the cracks of the main cavern of the underground water-sealed oil storage cave depot can be achieved, and the water seepage amount of the main cavern of the underground water-sealed oil storage cave depot can be effectively controlled. The mung beans are added in the grouting process of the Fahrenheit grouting pump, so that the purpose of rapidly solidifying the grout is achieved, and the grouting quality is guaranteed.

This invention relates to the field of carbonate rock lithology identification technology, and particularly to a method, system, and apparatus for automatically identifying carbonate rock lithology based on well logging curves; comprising the following steps: S1, acquiring well logging curve data, core data, and thin section data from multiple wells in the area to be identified; S2, standardizing and environmentally correcting the well logging curve data; S3, using an optimization model to solve for the lithological profile of the area to be identified, thereby determining the clay content, porosity, and water saturation; S4, constructing rock structure curves and formation fracture porosity curves; S5, constructing a machine learning model, setting a learning sample set, and inputting the learning sample set into the machine learning model for training, so that the trained machine learning model can automatically identify carbonate rock lithology; this invention improves the accuracy of carbonate rock lithology identification.

The present application relates to the field of rock mass structure plane mechanical test technology, and particularly relates to a field rock structure plane shearing test system and a test method, comprising a horizontally arranged test platform, a concrete encapsulating shell wrapped on a rock sample, a normal load loading system for applying a normal load on the top surface of the concrete encapsulating shell, a shearing load loading system for applying a shearing load on the side surface of the concrete encapsulating shell, and a data test acquisition system for measuring normal pressure, normal displacement and tangential displacement, wherein the normal load loading system and the shearing load loading system are both arranged on the test platform. The present application applies normal pressure and tangential pressure through the normal load loading system and the shearing load loading system respectively, and obtains relevant displacement parameters through the data test acquisition system with higher precision, so as to quantitatively evaluate and analyze the strength characteristics of the structure plane, and solve the problems of large occupation and low reliability existing in the traditional test method.

The invention discloses an anti-seepage drainage sensitivity analysis method and system based on reservoir area leakage amount data, relates to the technical field of reservoir area abnormity monitoring, and discloses the steps of obtaining reservoir area water body contact surface structure information, and drawing a stereogram; a distributed optical fiber sensing technology is used for arranging temperature measurement points, mapping temperature parameters and dividing temperature distribution blocks; setting a flow velocity detection device, and correlating the flow velocity, the block characteristics, the water level height and the rock structure characteristics to form a seepage block parameter group; constructing a finite element model based on historical and approximate variation parameter groups, and analyzing rock distortion sensitive parameters; and comparing the real-time parameter group with the simulation parameter group to determine a real-time sensitive parameter. According to the method, through refined data processing and simulation, the leakage analysis precision and real-time performance are improved, the reservoir leakage risk is reduced, and the method is suitable for reservoir anti-seepage drainage optimization in a complex geological environment.

This invention provides a refined design method for explosive charge quantity based on rock mineral particle structure, relating to the field of geotechnical engineering blasting technology. This invention maps the mineral composition and particle size data of rock samples to mineral hardness distribution characteristics and particle structure characteristics, respectively, and generates a high-dimensional feature vector through nonlinear encoding fusion. This vector is input into a graph neural network, and a rock structure feature relationship map is formed through node representation and attention mechanisms. Using this map as a condition, under the constraint of baseline explosive consumption, a deep generative network learns and outputs a differentiated charge distribution matrix corresponding to spatial location. After alignment and transformation with blasting hole mesh parameters, a charge allocation design map is generated. Finally, after blasting based on this design map, actual effect indicators are collected to construct a multi-objective optimization function. An optimization algorithm is used to adjust the parameters of the graph attention mechanism and the generative network in reverse according to the effect differences, achieving iterative optimization of the model.

This invention discloses a composite seepage control structure and method for non-drainage sections of tunnels with a head of 50m or more, comprising: an external surrounding rock structure, a consolidation grouting ring, a pressure-bearing lining, transverse drainage components, and a longitudinal pipe assembly; a pressure-bearing lining with a thickness of 40cm or more is installed on the inner wall of the tunnel; the external surrounding rock structure is located outside the pressure-bearing lining; and the consolidation grouting ring is installed outside the external surrounding rock structure. By setting different seepage-proof consolidation grouting rings outside the lining according to the magnitude of the external water load, the drainage volume and external water load are reduced, thereby achieving the purpose of reducing the external water load acting on the tunnel lining structure and avoiding water pollution caused by external water seepage.

The present application relates to the field of rail transit underground excavation station construction, and discloses a super-high rock column non-blasting excavation operation system and a construction method thereof, which comprises a plurality of anchor rods for punching into the arch crown surrounding rock of a left and / or right pilot tunnel; the bottom of the anchor rod is fixed with a C-shaped steel rail which is open downward and arranged along the direction of the pilot tunnel; the front end and the rear end of the C-shaped steel rail are respectively provided with a steering wheel; the system further comprises a movable support longitudinal beam arranged in the C-shaped steel rail, the front end and the rear end of the movable support longitudinal beam are respectively provided with a cable, and the cable and the steering wheel are respectively connected with a fixed winch on the ground; the system further comprises a lifting platform connected with the movable support longitudinal beam through a lifting cable. The system relies on the arch crown surrounding rock structure during tunnel excavation, can completely eliminate the requirement for the flatness of the ground, effectively realizes the rapid adjustment of the excavation operation height and operation position of the super-high rock column, does not need to change the lifting multiple times during the whole process, thereby realizes the excavation of the operation point in all directions, and effectively speeds up the excavation construction efficiency.

To provide a rock bolting method which enables long-term stabilization without making any major changes to a conventional process when stabilizing the bedrock around a tunnel installed deep underground with rock bolts and can simultaneously improve a problem of spring water caused by a construction of rock bolts.SOLUTION: A method for manufacturing a stabilized tunnel rock structure includes a step (S110) of forming a hole from a surface of a tunnel located deep underground, a step (S120) of inserting a rock bolt into the hole, an injection step (S130) of injecting a mixture of a hardener and a concretion agent into the hole, and a fixation step (S140) of hardening the hardener and fixing a loosened area of the rock around the tunnel to the rock layer in a deep portion of the tunnel surrounding rock via the rock bolt, thereby stabilizing the rock around the tunnel.SELECTED DRAWING: Figure 1

The invention provides a rock structure-oriented point cloud normal vector estimation method based on voxel geodesic distance, and the method comprises the steps: obtaining original point cloud data of a three-dimensional rock structure, carrying out the voxelization processing of the original point cloud data, and dividing the point cloud into a plurality of three-dimensional voxel units; a sparse voxel graph is constructed based on voxel space adjacency relations, each voxel is a node of the graph, and adjacent voxels are connected through edges. Furthermore, the voxel geodesic distance between any two points is calculated by using a graph search algorithm, namely the shortest distance along a voxel communication path. On the basis, a target point is taken as a center, a neighborhood point set which is communicated with the target point is screened based on geodesic distance, the distance between the target point and the neighborhood point set is smaller than a threshold value, and a principal component analysis (PCA) method taking voxel geodesic distance as a weighting factor is adopted to estimate a normal vector of the target point. According to the method, pseudo neighborhood point interference caused by cracks, holes and the like can be effectively reduced, and the robustness and precision of normal estimation are improved.

The invention discloses a rock structure and three-dimensional stress-strain field evolution visualization method based on digital twinning. The rock digital twinborn model is constructed by fusing an in-situ loading CT scanning experiment, three-dimensional digital image correlation method (3D-DIC) surface deformation field measurement, digital volume image correlation method (DVC) internal deformation field measurement, digital modeling and numerical simulation technologies and methods. And obtaining mesomechanics parameters of the numerical model in real time, synchronously performing mirror image simulation, generating a four-dimensional dynamic body image with space-time continuity, and realizing visualization of the whole evolution process of the rock internal structure and the three-dimensional stress-strain field.

The application discloses a kind of coal face end head suspended roof hydraulic fracturing construction method and system equipment, comprising the following steps: S1, test coal mine working face roof physical mechanics property, determine the firmness of roof rock, assess the area of end head suspended roof;S2, by theoretical analysis, numerical calculation explores water injection rate, principal stress difference, fracturing sequence, borehole inclination these several different influence factors on hard roof cracking damage weakening, provide reference for hydraulic fracturing field construction design;S3, determine the working face end head suspended roof hydraulic fracturing construction parameter;S4, according to the construction parameter determined to carry out hydraulic fracturing construction.The application uses hydraulic fracturing method, high-pressure fluid is injected into target hard rock layer, so as to produce crack or make natural crack restart, transform rock structure, form crack network system, achieve the purpose of weakening end head hard roof and timely collapse, reduce roof pressure intensity, ensure the safety of working face.

The application discloses a method, device and equipment for identifying sweet spots of shale oil in a salinized lake basin. The method comprises the following steps: firstly, determining a rock structure factor of a stratum based on a natural gamma curve, volume density logging data and skeleton density logging data of the stratum, so as to determine the lithology of the stratum and identify reservoir rock layers in the stratum based on the rock structure factor; then, determining a lamination index of the rock in the stratum based on electrical imaging logging data, so as to identify source rock layers in the stratum based on the lamination index; and finally, identifying a sweet spot development section of the shale oil in the salinized lake basin based on the reservoir rock layers in the stratum and the source rock layers in the stratum. The method can quickly identify the sweet spot development section of the shale oil in the target area, and provides a basis for later oil and gas development.

This invention discloses a protective device for easily splittable rock strata and a method for curtain grouting construction of dam toe slabs. It changes the conventional practice of directly constructing high-pressure sections after the low-pressure sections are completed. Instead, after grouting the low-pressure sections, a protective device for easily splittable rock strata is first installed to form a solid isolation layer. This layer directly wraps and protects the easily splittable, low-strength soft rock sections, blocking the pressure transmission and grout impact of the lower high-pressure grouting. This prevents splitting and collapse of the grouted soft rock sections from the source, protecting the fragile rock structure above the dam foundation from grouting disturbance and damage. By implementing a "protection first, construction later" approach as a fixed procedure in the construction process, the risk of grout seepage from the upper part and abnormal ash consumption during the grouting of the lower high-pressure sections is reduced, ensuring that the high-pressure sections can be successfully grouted under the designed pressure value.

The present application relates to a kind of methods for restoring porosity evolution of clastic reservoirs under tectonic extrusion, belonging to the technical field of oil and gas exploration and development.The method comprises the following steps: calculating the total compaction and pore loss of clastic rock samples, selecting samples with similar burial depth, similar rock structure and different maximum paleo-tectonic stress as selected samples, obtaining the lateral compaction and pore loss of the one with larger maximum paleo-tectonic stress by the difference of total compaction and pore loss corresponding to the two selected samples adjacent to the maximum paleo-tectonic stress, and establishing the functional relationship between lateral compaction and pore loss and maximum paleo-tectonic stress;calculating the lateral compaction and pore loss of each lateral extrusion in multiple lateral extrusions;calculating the vertical compaction and pore loss according to the total compaction and pore loss and lateral compaction and pore loss, and establishing the relationship chart between vertical compaction and pore loss and burial depth;using the inverse back stripping method, combining lateral compaction and pore loss and vertical compaction and pore loss, and drawing the porosity evolution curve of clastic reservoirs in geological history under tectonic extrusion.This method solves the problem of being unable to quantitatively calculate lateral and vertical compaction and pore loss in the process of restoring porosity evolution of foreland basin reservoirs.

This invention discloses an automated method, system, and device for assessing the surrounding rock grade of tunnels. The method includes the following steps: Step 1: Capturing images of the tunnel face using a drone and transmitting the images to a computer terminal; Step 2: Performing multi-dimensional preprocessing on the tunnel face to obtain effective image areas; Step 3: Calculating the fracture density image quantity D. f Crack direction dispersion H θ Surface roughness E r Step 4: Crack density image quantity D f Crack direction dispersion H θ Surface roughness E r Step 5: Perform normalization processing and calculate the surrounding rock structure complexity index RSCI; Step 6: Based on the surrounding rock structure complexity index RSCI, calculate the continuous surrounding rock quality score Q through a monotonic mapping function; Step 7: Map the continuous surrounding rock quality score Q to the surrounding rock grade according to a preset threshold interval and output the surrounding rock grade evaluation result.

The application provides a structure surface damage feature quantification method and a strength feature quantification method, and belongs to the technical field of rock structure surface topography. The method comprises the following steps: carrying out an indoor shear test on a sawtooth structure surface, acquiring point cloud data of the structure surface before and after shearing by using a three-dimensional laser scanning technology, and collecting visual images of the structure surface; preliminarily extracting a damage area and calculating a preliminary damage degree D d of the structure surface d ; judging the overall damage condition of the structure surface according to D d ; for a seriously damaged area, quantitatively evaluating the damage range by using the three-dimensional laser scanning technology; for a structure surface with slight overall damage or a locally slightly damaged area in a seriously damaged structure surface, finely extracting the damage area by using a computer vision technology, and calculating a projection area proportion of the damage area on an XOY plane, denoted as D r ; using the damage degree D d and the damage range D r to jointly represent the damage feature of the structure surface. D d , D r can be directly used to establish a quantification model of the peak strength, and provide a quantification input with a more explicit physical meaning for strength evaluation.

The utility model provides a high-earth-pressure soft rock roadway surrounding rock structure stress detection device, which belongs to the field of high-earth-pressure soft rock roadway surrounding rock structure stress detection, and is characterized by comprising a receiving transducer and a transmitting transducer, the measuring pipe is respectively connected with the receiving transducer and the transmitting transducer; the connecting assembly comprises a male connecting sleeve and a female connecting sleeve, and the male connecting sleeve is in threaded connection with the interior of the female connecting sleeve. According to the utility model, through the arrangement of the connecting assembly, the measuring pipe and the connecting mechanism for the measuring pipe can be detachably connected with the measuring pipe, and on the basis of ensuring the normal connection of the measuring pipe, after the connecting assembly is damaged or the service life reaches the age limit, the whole connecting assembly can be taken down from the measuring pipe, and a new connecting assembly is replaced to be connected with the measuring pipe; therefore, the measuring pipe does not need to be replaced during maintenance, replacement cost is effectively reduced, and waste of the intact measuring pipe is avoided.

The utility model relates to a composite overflow type hydraulic reclamation drain opening structure which comprises an anti-seepage structure, an overflow structure and a supporting structure, the anti-seepage structure comprises Larsen steel sheet piles, an anti-seepage geomembrane A and a blanket, and the overflow structure comprises an overflow steel sheet, bagged gravel, an anti-seepage geomembrane B and a gravel hardcore. The supporting structure comprises homogeneous rolling soil located below the overflow structure. The overflow type drain opening structure is of a steel sheet pile and earth-rock composite structure, the safety and stability requirements are met, the hydraulic reclamation side is of a steel sheet pile geomembrane composite structure and can play a role in seepage prevention, the supporting structure is of an earth-rock structure, the hydraulic reclamation space can be enlarged, earth materials can be saved, and meanwhile the effects of inclination resistance and sliding resistance are achieved; meanwhile, according to the composite overflow type hydraulic reclamation drain opening structure provided by the utility model, the inverted U-shaped steel plate with the asymmetrical top part forms an overflow weir attached to water flow, the design is automatic flood discharge, frequent maintenance and operation are not needed, and the maintenance cost is lower.

The evaluation method for structural fractures in continental shale oil reservoirs based on lithofacies constraints belongs to the field of petroleum geology and includes the following steps: (1) classifying the lithofacies types of continental shale in the study area; (2) based on the lithofacies type classification in step (1), extracting characteristic parameters affecting the development of structural fractures: continental shale brittleness index I, rock structure index S, and rock mechanical layer thickness H; (3) analyzing the sensitivity of different characteristic parameters in step (2) to the intensity response of structural fracture development; (4) analyzing the combination patterns of brittleness index, rock structure index, and rock mechanical layer thickness index of different lithofacies; (5) establishing a quantitative evaluation index for structural fractures in continental shale oil reservoirs based on lithofacies, and calculating the fracture development index F of different lithofacies. j This invention can be applied to the evaluation of structural fractures in continental shale oil reservoirs, providing technical support for the rational development of continental shale oil reservoirs in my country.

The invention provides a shield tunnel surrounding rock structure identification method and device, and belongs to the technical field of tunnel construction.The method comprises the steps that infrared spectrum data collected by a hyperspectral camera on a shield tunneling machine and infrared field intensity data collected by an infrared detector are obtained; comparing the spectral characteristic difference with a preset rock spectrum library to obtain a lithology category of the tunnel surrounding rock; based on the lithology category, determining lithology distribution characteristics of the tunnel surrounding rock, and determining geologic structure characteristics; fitting the infrared field intensity data of the plurality of measuring points to obtain an infrared detection curve; correcting an infrared detection curve based on the infrared spectrum data; and determining an underground water area based on the geological structure characteristics, the water-rich geological structure grade, the local historical meteorological data of the tunnel and the corrected infrared detection curve, and performing graded early warning according to the water outlet severity of the underground water area. According to the method, the purpose of accurately performing early warning on the condition that the underground engineering is flooded due to water inrush possibly occurring in the tunnel surrounding rock or water inrush can be achieved.

The invention discloses a muck recycling and backfilling method for a soft rock tunnel, and relates to the technical field of soft rock tunnel construction.The muck recycling and backfilling method for the soft rock tunnel comprises the steps that muck is graded on the basis of soft rock structural plane characteristics of the soft rock tunnel, and graded muck is obtained; the graded muck is pretreated, and target muck is obtained; modifying the target muck to obtain backfilled muck; and the soft rock tunnel is subjected to layered backfilling through the backfilling muck, and muck recycling and backfilling construction of the soft rock tunnel is completed. According to the method, the muck of the soft rock tunnel is subjected to multi-stage classification through the soft rock structural plane characteristics of the soft rock tunnel, a basis is provided for subsequent modification treatment, the soft rock tunnel is subjected to layered backfill by utilizing the backfill muck, so that the muck is subjected to multi-dimensional classification, the modification treatment pertinence is improved, the structural plane characteristics are effectively utilized, and the resource utilization efficiency is improved. Classification and utilization of muck resources are achieved, the environmental burden is relieved, and the construction cost of the soft rock tunnel is reduced.

The utility model discloses a static friction angle measuring device based on simulated rock structural surface slippage, which comprises a shell, a moving mechanism is arranged in the shell, the moving mechanism is in driving connection with a moving bearing platform, a coating box body is arranged above the moving bearing platform, a mounting groove is formed in the lower part of the coating box body, and a plurality of fixing screws are in threaded connection with the periphery of the coating box body. The inner end of the fixing screw is located in the mounting groove, a testing box is arranged on the shell and comprises a measuring rod, and the end of the measuring rod faces the wrapping box body.