148 results about "Rock structure" patented technology

The invention relates to the technical field of rock mechanics, and discloses a rock three-dimensional reconstruction method and system based on multi-source information fusion, and the method comprises the steps: obtaining and preprocessing data, carrying out the spatial feature learning of a fusion feature vector through a 3D-CNN network, and constructing a three-dimensional voxel model of rock microscopic damage; converting the fused image data into a point cloud model of the underground cavern surrounding rock structure by adopting a three-dimensional reconstruction algorithm based on point cloud, and constructing a digital twin framework of the underground cavern surrounding rock structure based on an implicit surface reconstruction algorithm; feature parameters output by the three-dimensional voxel model and the digital twinning framework are used as input, and the optimal supporting opportunity and supporting parameters are output through an LSTM-CNN fusion model; in the underground engineering construction process, surrounding rock deformation data are collected in real time, and a supporting scheme is adjusted in real time through a depth deterministic strategy gradient algorithm; according to the method, the scientificity and timeliness of support design under complex geological conditions can be improved.

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 relates to a nanoscale grouting method for illite-smectite mixed layer surrounding rock, which is characterized by comprising the following steps of: S1, combined detection of a borehole television and a ground penetrating radar or a geological radar: carrying out rock mass structure detection in a manner of combining the borehole television and the ground penetrating radar or the geological radar, and obtaining a deformation rule of a roadway and surrounding rock in an area; s2, arranging grouting pipes and an exhaust pipe: arranging two long and short grouting pipes and one exhaust pipe in the grouting hole according to the deformation rule of the roadway and the surrounding rock in combination with numerical simulation of rock mass mechanics and the result of the numerical simulation; s3, grouting is conducted, specifically, grouting is conducted in a deep and shallow hole matching grouting mode; s4, secondary splitting grouting reinforcement is conducted, specifically, the mine illite-smectite mixed layer surrounding rock is reinforced through a secondary splitting grouting technology, the unfilled part in the primary grouting process is made up, and it is ensured that all gaps are filled with grout; and the illite smectite mixed layer surrounding rock can be grouted well.

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 discloses a quick tunneling surrounding rock drilling geophysical prospecting device and method for a weakly cemented rock stratum coal mine tunnel. The device comprises a tunneling machine, a drilling device, a while-drilling transient electromagnetic device, a while-drilling impact seismic source device, an equipment cable and a field host. The while-drilling transient electromagnetic device, the while-drilling impact seismic source device and the drill bit are sequentially connected, the while-drilling transient electromagnetic device is used for collecting data of electromagnetic detection, and the while-drilling impact seismic source device is used for exciting seismic waves; the on-site host is connected with the while-drilling transient electromagnetic device, the while-drilling impact seismic source device and the drill bit. According to the invention, drilling, seismic wave detection and transient electromagnetic detection are organically fused, real-time identification and dynamic analysis of a surrounding rock structure are realized, seamless connection of real-time exploration and construction, synchronous exploration and tunneling and integration of fused drilling geophysical prospecting data are realized; the method is especially suitable for geological detection requirements of weak cemented surrounding rock strata in coal mine tunnel excavation, and can effectively improve detection precision and operation efficiency under complex and weak surrounding rock conditions.

The invention discloses a visual seepage test device and method for shear fracture of a rock structural surface under true triaxial. The visual seepage test device comprises a fixed base, a lower shear box, an upper shear box, a seepage water inlet pipe, a seepage water outlet pipe, a seepage water inlet shear head and a seepage water outlet shear head, the fixed base is connected with a normal loading block of a true triaxial testing machine through pin nails, the lower shear box is fixed on the fixed base, the upper shear box and the lower shear box are oppositely arranged, and the seepage water inlet shear head and the seepage water outlet shear head are respectively embedded into the lower shear box and the upper shear box to form a water injection cavity I and a water injection cavity II; after the lower shearing box and the upper shearing box are closed, a closed sample cavity for clamping a rock sample and a transparent block is formed, and meanwhile, the water injection cavity I and the water injection cavity II form a seepage cavity. According to the device and the method, the visual shear simulation of the rock mass structural surface under the multi-field coupling environment of true three-dimensional stress-high osmotic pressure-chemical corrosion and the like is realized.

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 high-capping-index and low-permeability single coal seam construction, pressing and explosion alternate permeability increasing method, which comprises the following steps of: performing pressure relief and permeability increasing on a coal seam through large-drill-diameter extraction, hole formation through a seam penetrating machine, and changing rock stratum structures of a coal seam top and a bottom plate through hydraulic fracturing so as to increase a gas diffusion channel, during large-drill-diameter extraction, drill holes are controlled to incline upwards by 20 m and incline downwards by 15 m respectively, the trend of the left contour line and the trend of the right contour line are controlled to be 15 m respectively, one group of drill holes are constructed at the interval of 5 m, and the drill hole construction diameter is phi 133 mm; hydraulic fracturing is carried out through the large-drill-diameter layer-penetrating drill holes to respectively fracture a top plate and a bottom plate of the coal seam, damage the rock stratum structure of the top plate and the bottom plate of the coal seam, change stress distribution of the coal seam and increase gas diffusion channels; after the outburst prevention measure layer-crossing construction in the large-drill-diameter area is carried out, fixed-point hole forming is carried out on a coal seeing section according to the actual coal seeing condition of the layer-crossing drilling holes at intervals of one group of construction layer-crossing hole forming drilling holes, and hole forming phi is 500 mm. According to the method, the gas extraction effect of the low-permeability coal seam can be greatly improved, and the probability of coal and gas outburst during tunneling is reduced.

The invention belongs to the technical field of rock physical simulation, and particularly relates to a rock structure surface roughness generation method based on power spectral density. A rock structure surface roughness generation method based on power spectral density comprises the following steps: establishing an initialized Fourier coefficient storage array, generating a Fourier matrix through basic calculation parameters, and generating surface data X by using inverse Fourier transform; sampling the obtained surface data, and calculating a joint roughness value JRC through different roughness parameters; establishing a target joint roughness value optimization function, and iteratively obtaining an optimal parameter solution under various characteristic parameter standards through global optimization and local optimization; and for the surface data obtained according to different target joint roughness, 3D printing is used for achieving generation of the surface with the specific roughness. According to the method, repeatable corresponding joint roughness surface generation under various roughness parameter evaluation standards of the rock surface is realized, and the natural rock joint surface can be simulated more accurately.

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 invention discloses a high-temperature and high-pressure testing device for a rock test, and particularly relates to the technical field of rock testing, the high-temperature and high-pressure testing device comprises a shell, the inner surface of the shell is fixedly connected with a first partition plate and a second partition plate, and the upper end of the second partition plate is provided with a bagging assembly and a pushing steering assembly. According to the high-temperature and high-pressure testing device for the rock test, the bagging assembly is arranged, so that a rubber film bag can be tightly attached to the outer surface and the left end face of a cylindrical rock, and in a high-temperature and high-pressure test, the surface integrity and the structural stability of the cylindrical rock during the test can be maintained; the outer cylindrical surface seal can prevent scratch wear caused by friction and collision with test device components, the rock mechanical property and test result accuracy are guaranteed, the sealed end surface can prevent surface moisture evaporation and sun crack of porous or easily-weathered rocks due to environmental change, the rock structure is maintained to be stable, and the consistency of rock performance in the test process is guaranteed.

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 present disclosure discloses a stress flow warning method and device, an electronic device and a storage medium for rock burst, and relates to the field of data processing technology. Compared with related technologies, the embodiments of the present application calculate stress flow, combine the situation when similar models are destroyed, and comprehensively analyze and derive a preset dynamic yield surface model of stress flow affecting coal rock mass. By simulating different coal rock structures, an experiment between stress flow and coal rock mass instability is obtained, and a rock burst warning threshold based on stress flow is set. Different warning thresholds exist for different structural conditions, thereby improving the prediction accuracy of rock burst.

The invention discloses a subsea tunnel surrounding rock full life cycle test method based on a supergravity geotechnical centrifuge technology, which comprises the following steps: firstly, constructing a model box, carrying out scale simulation on a subsea tunnel and a surrounding rock structure thereof, then putting the model box into a vacuum box for saturation treatment, finally taking the model box out of the vacuum box, putting the model box into a supergravity geotechnical centrifuge, and testing the whole life cycle of the subsea tunnel surrounding rock. And the super-gravity geotechnical centrifuge is started to rotate, and the strain sensor collects the dependent variable of the rock stratum near the tunnel reduced-scale pipeline in real time, so that the nonlinear elastic deformation of the rock stratum in the full life cycle in the running process of the train track simulation mechanism is observed. The model box is constructed to simulate the subsea tunnel and the surrounding rock structure thereof, test analysis is performed based on the supergravity geotechnical centrifugal technology, the evolution process of damage of the subsea tunnel and the surrounding rock structure thereof is remarkably accelerated, the experimental period is shortened, and the change condition of the whole life cycle is rapidly tested and determined.

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 experimental method and device for identifying the risk of rock burst induced by dissimilatory overlying strata structure while drilling, and the method comprises the steps: constructing a geologic model of non-uniform-thickness hard overlying strata, combining a drilling device and a coal cutting device which are controlled by a computer, and simulating an underground drilling and logging process and an overlying strata response process under different mining intensities; through stress, acoustic emission, digital speckles and the like, the stope mine ground pressure and the rock burst appearing intensity are judged; through tests of different key layer thicknesses, interlayer spacing and combination forms, while-drilling multi-source information of different overlying strata structures and a large amount of data corresponding to rock burst risk grades are economically, simply and conveniently obtained; the device comprises a model frame, a loading device, a drilling device and a coal cutting device, array small holes are formed in the bottom of the model frame, and a drill rod upwards drills from the bottom of the model through the small holes. According to the method, the field actual measurement cost can be remarkably reduced, and key data are provided for establishing a risk assessment technology for identifying the dissimilatory overburden rock structure induced rock burst while drilling.

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.

The invention belongs to the field of rock mechanical property evaluation, and particularly relates to a rock structural surface shear brittleness index obtaining method and a shear brittleness evaluation method. And carrying out a direct shear test on the rock structural surface to obtain a shear stress-displacement whole-process curve, calculating according to the shear stress-displacement whole-process curve to obtain a pre-peak brittleness parameter S1 and a post-peak brittleness parameter S2, and multiplying the pre-peak brittleness parameter S1 and the post-peak brittleness parameter S2 to obtain the shear brittleness index SI of the rock structural surface. According to the method, the shear stress rise rate in the pre-peak loading stage, the shear stress drop amplitude in the post-peak stage and the relative displacement in the residual deformation stage are comprehensively considered, the whole-process shear deformation characteristics of the rock structural surface can be comprehensively reflected, and the required parameters are easily measured through a mechanical test.

The invention relates to a clastic rock reservoir porosity evolution recovery method under a tectonic extrusion background, and belongs to the technical field of petroleum and natural gas exploration and development. The method comprises the following steps: calculating the total compaction pore reduction amount of clastic rock samples, selecting samples with similar burial depths, similar rock structures and different maximum paleotectonic stresses as selected samples, and calculating the total compaction pore reduction amount of the clastic rock samples according to the difference value of the total compaction pore reduction amount corresponding to two selected samples with adjacent maximum paleotectonic stresses. Obtaining the lateral compaction pore reduction amount of the maximum palaeotectonic stress, and establishing a function relationship between the lateral compaction pore reduction amount and the maximum palaeotectonic stress; the lateral compaction hole reduction amount of each time of lateral extrusion in the multiple lateral extrusion processes is calculated; according to the total compaction hole reduction amount and the lateral compaction hole reduction amount, the vertical compaction hole reduction amount is calculated, and a relation chart of the vertical compaction hole reduction amount and the buried depth is established; and drawing a geological historical period porosity evolution curve of the clastic rock reservoir under the tectonic extrusion background by utilizing an inversion back-stripping method and combining the lateral compaction pore reduction amount and the vertical compaction pore reduction amount. The method solves the problem that the lateral and vertical compaction hole reduction amount cannot be quantitatively calculated in the evolution recovery process of the porosity of the foreland basin reservoir.

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 invention provides a mold for making a non-through closed rough joint specimen and a specimen making method, comprising: a shell having a housing cavity with a material injection port formed at the top; a prefabricated rubbing plate placed in the housing cavity along the length direction of the shell and dividing the internal space of the housing cavity into a first chamber and a second chamber distributed on the left and right; the prefabricated rubbing plate is made into an integral structure by 3D printing, comprising: a rock bridge portion arranged along the width direction of the shell and completely dividing the first chamber into two sub-chambers, and the rock bridge portion has a gap toward the second chamber; a rubbing plate portion, comprising a first rubbing plate and a second rubbing plate, the first rubbing plate and the second rubbing plate having joint surfaces on a side close to the second chamber, and different joint roughness and joint continuity are formed inside the specimen by two groups of the joint surfaces. Through the disclosure of the present invention, the replication of a rock structure closer to the natural state is achieved, so that the test results can better reflect the actual stress state and failure process of the engineering rock mass.

The present invention discloses a test device for testing the shear force of the occlusal layer of a rock structure surface, comprising a frame, two slide rails (one) and a driving mechanism. The two slide rails (one) are parallel to each other and horizontally mounted on the frame. Each of the slide rails (one) is slidably connected to a slider (one). The upper portion of the slider (one) is used to mount and support an upper test piece, and the upper test piece spans the upper portion of the two slide rails (one). The driving mechanism comprises a driving platform capable of horizontally moving along the direction of the slide rails. The driving platform is fixedly mounted with a linkage seat, and the linkage seat is linked to the upper test piece and is used to apply force to the upper test piece horizontally along the direction of the slide rails. The present invention can more accurately obtain the shear force of the occlusal portion of the lower test piece and the upper test piece, overcome the influence of gravity, and improve the accuracy of the shear force test of the occlusal layer of the rock structure surface.

The invention provides a smooth blasting method containing an induction structure and a self-locking cartridge bag, and relates to the technical field of blasting control in geotechnical engineering and mineral engineering. According to the method, a hole arrangement optimization algorithm oriented to rock mass structure characteristics is constructed, an hourglass type charging structure with a multi-section energy zoning function is designed, a pre-blasting induced crack forming technology and an in-hole cartridge bag self-locking positioning mechanism are integrated, accurate control and quality improvement of the whole smooth blasting process are achieved, and the smooth blasting quality is improved. And smooth surface continuity and blasting consistency are remarkably improved, and the technical requirements of modern rock mass control excavation for high precision, low disturbance and high forming quality are met. The method is suitable for scenes with high requirements on rock mass disturbance control and forming precision, such as tunnel construction, mine roadway tunneling, side slope forming, ore body boundary control and the like, and has wide engineering applicability and popularization value.

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.