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34 results about "Rock tapaculo" patented technology

The rock tapaculo or Espinhaço tapaculo (Scytalopus petrophilus) is a species of bird in the Rhinocryptidae family. It is endemic to altitudes of 900–2,100 metres (3,000–6,900 ft) in the central and southern Espinhaço Mountains, and the Mantiqueira Mountains in Minas Gerais, Brazil, though it may also occur in adjacent parts of Rio de Janeiro and São Paulo. It is found in shrubby and grassy habitats in rocky regions, and in elfin and cloud forests. It closely resembles the Diamantina tapaculo and Planalto tapaculo in appearance and voice (especially song; less so in call).

Method for characterizing the distribution of primary water in a rock and its applications

This invention relates to a method for characterizing the distribution of primordial water in rocks and its application. The method includes: preparing particles from fresh rock cores as fresh samples and particles from dried rock cores as dried samples; calculating the scattering length density of the rock to be tested based on the dried sample, and preparing a deuterated toluene contrast-matching fluid with the same scattering length density as the rock to be tested; immersing the fresh sample and the dried sample in the deuterated toluene contrast-matching fluid respectively to obtain immersion samples; performing small-angle neutron scattering (SANS) experiments on the dried sample and the immersion samples respectively; obtaining pore structure information before and after immersion based on the experimental results; and determining the distribution of primordial water in the rock to be tested based on the pore structure information. This invention, based on SANS experiments, provides a novel experimental technique for characterizing the distribution and water saturation of primordial water in sedimentary rocks, with advantages such as being non-destructive, efficient, time-saving, and highly accurate.
Owner:PETROCHINA CO LTD

Bare high and steep slope microtopography reconstruction method for improving vegetation colonization capability

PendingCN121345141AData processing applicationsExcavationsNutrient deficiencySteep slope
The invention discloses an exposed high and steep slope microtopography reconstruction method for improving vegetation colonization ability, which comprises the following steps: screening rocks with high weathering sensitivity, and establishing a weathering rate quantitative evaluation model; the weathering process of the rock with high weathering sensitivity is accelerated; constructing a micro-topographic space; based on the micro-topographic space, designing a three-stage compound matrix through the nutritional defects of the weathered product of the high-weathering-sensitivity rock, and carrying out layered fusion on the three-stage compound matrix and the micro-topographic structure; and carrying out vegetation planting and weathering-growth synergistic maintenance. According to the method, permeation of a weathering agent is guided through preset cracks, rock is converted into a nutrient matrix through an enhanced weathering technology, and the problem that traditional physical transformation depends on an external matrix and is prone to being deficient in the later period is solved; according to the method, the climate areas are graded, different treatment is conducted on the different climate areas according to the grading result, the water retention rate of the arid area is increased, the drainage efficiency of the wet area is improved, the overall structure is still stable when the gradient is larger than 60 degrees, and the gradient limitation of vegetation bags is broken through.
Owner:CHANGAN UNIV

Device and method for testing anisotropic mechanical properties of strong heterogeneity rock

PendingCN122016534ASolve the problem of low sampling success rateFine resultsInvestigating material hardnessTool bitTrackway
The invention discloses a device and a method for testing anisotropic mechanical properties of strong heterogeneity rocks, the device comprises a rotatable rock sample fixing device, a workbench and a sliding track, and a scratching cutter control and data monitoring system, the workbench and the sliding track device main body are fixed on a table top and are convenient to support and move; the slidable scratching system moving track supports the slidable scratching system to move left and right; the rotatable rock sample fixing device is located on the left side above the table top and can fix the position of a rock sample and change the rock scratch angle. The scratching tool control and data monitoring system is located on the right side of the table top and connected with the sliding rail, the slidable scratching system can scratch rocks, and the data monitoring system can monitor and collect tangential force data borne by a tool bit and displacement data of the tool bit in real time; the device and the method for testing the anisotropy of the shale based on the scratches can be researched so as to judge the anisotropy mechanical property of the strong heterogeneity rock.
Owner:SOUTHWEST PETROLEUM UNIV

Deep in-situ environment rock parameter acoustic electromagnetic fidelity test system and method

The invention relates to the technical field of deep rock mechanics, and provides a deep in-situ environment rock parameter acoustic electromagnetic fidelity test system and method.The deep in-situ environment rock parameter acoustic electromagnetic fidelity test system comprises a cabin, a test space is formed in the cabin, and a rock core sample enters the test space from one end of the cabin through a displacement unit; the temperature and pressure control unit is communicated with the cabin body and is used for adjusting the temperature and the pressure in the cabin body to reach target values and keeping the target values stable; the acoustic electromagnetic testing module is arranged in the cabin body and used for calculating the wave velocity, the resistivity and the apparent resistivity of the rock core sample, and the acoustic electromagnetic testing module is connected with an external acoustic electromagnetic data acquisition system; and the remote control system is electrically connected with the acoustic electromagnetic test module and the temperature and pressure control unit. According to the method, the original occurrence state of the rock can be restored in a fidelity manner, the physical and mechanical parameters of the rock in a deep in-situ real environment are tested and analyzed, the evolution law of the physical and mechanical parameters along with the deep environment is analyzed, and reliable data support is provided for revealing the constitutive relation, the failure mechanism and the disaster breeding mechanism of the deep rock mass.
Owner:SHENZHEN UNIV +1

Layered lithology identification method and device, and storage medium

The invention discloses a layered lithology identification method and device and a storage medium, and relates to the technical field of petroleum engineering. The method comprises the following steps: clustering basic categories into a plurality of macroscopic categories according to lithology similarity of rock basic categories; determining the macroscopic category of the rock of which the lithology is to be identified according to the category features of the macroscopic category; in the category features of the macroscopic category, determining the distinguishing features of the basic category under the macroscopic category; according to the parameter relationship of the distinguishing features of each basic category, obtaining the recognition features of each basic category; and in the macroscopic category, determining the basic category of the rock of which the lithology is to be identified according to the identification features of the basic category. According to the method, after rocks are classified and recognized through macroscopic categories with high accuracy and recall rate, hierarchical recognition of basic categories is performed on the rocks through recognition features with large differences; and through classification identification and hierarchical identification, the identification precision of the rock lithology is obviously improved.
Owner:KINGDREAM PLC CO +1

A system and method for measuring rock in-situ gas diffusion coefficient and permeability

The present invention discloses a system and method for measuring the in-situ gas diffusion coefficient and permeability of rocks. The measurement system includes: a diffusion and permeability measurement unit, which includes: a gas cylinder assembly, including a first target gas cylinder, a reference gas cylinder and a second target gas cylinder connected in parallel with each other; a first diffusion chamber and a second diffusion chamber, the first end of the first diffusion chamber is connected to the first output node, and the second end of the first diffusion chamber is connected to the input port of the high-temperature and high-pressure reactor; the first end of the second diffusion chamber is connected to the second output node, and the second end of the second diffusion chamber is connected to the output port of the high-temperature and high-pressure reactor; a gas chromatograph, configured to detect the gas content and composition information connected thereto; and a pressure difference sensor, configured to detect the pressure difference between a fourth common node and a fifth common node.
Owner:CHINA UNIV OF MINING & TECH

Impact brazilian splitting and in-situ observation experimental device and method

This invention relates to an impact-type Brazilian rock splitting and in-situ observation experimental apparatus and method, comprising a frame, lifting mechanism, impact hammer, spring, externally threaded iron bar, synchronous motor, upper vise, lower vise, piezoelectric force sensor, charge amplifier, computer, CT scanning device, infrared heater, infrared thermometer, inlet valve, outlet valve, and gas cylinder. The piezoelectric force sensor is connected to the computer via the charge amplifier for real-time acquisition, recording, and analysis of dynamic load signals during the splitting process. The chamber integrates a miniature CT scanning device, infrared heating and temperature measurement device, and protective atmosphere pipeline, enabling in-situ, non-destructive scanning imaging of rock samples before and after the experiment under controlled conditions. This invention obtains dynamic mechanical parameters and failure evolution images of rocks while efficiently and stably splitting rock cores, providing an integrated scientific research device for studying the dynamic failure mechanism of rocks under complex conditions, combining efficient loading, environmental simulation, and real-time observation.
Owner:SOUTHWEST PETROLEUM UNIV

Bionic geological hammer based on bird tail mantis and shrimp jaw foot

The invention relates to the technical field of geological exploration equipment, and discloses a bionic geological hammer based on bird tail mantis shrimp jaw feet, which is used for knocking an underwater geological structure and comprises a submarine with a containing cavity; a first driving motor is fixedly connected into the accommodating cavity; the supporting arm is fixedly connected with the exterior of the submarine; the interior of the supporting arm is of a hollow structure, and the interior of the supporting arm communicates with the containing cavity. The rotating part is fixedly connected with the supporting arm; the first driving motor is in transmission connection with the rotating part; one end of the elastic arm is fixedly connected with the supporting arm, and the other end of the elastic arm is fixedly connected with a hammer head; the output end of the rotating piece can rotate to enable the elastic arm to be bent and deformed. And the situation that the rock is knocked by hand waving can be avoided, and the arm syndrome of a worker is avoided.
Owner:YUNNAN ACAD OF ENVIRONMENTAL SCI

Testing device for monitoring real-time water absorption capacity of rock and application method of testing device

The invention relates to the technical field of rock water absorption testing, in particular to a testing device for monitoring the real-time water absorption amount of rock and an application method of the testing device. The test device comprises a test bed, a bearing assembly, a water container, an electronic scale and pressurization equipment, the bearing assembly comprises a sleeve and a pull rope, the rock sample is placed in the sleeve, the sleeve has water permeability, the upper end of the pull rope is connected to the test bed, and the lower end of the pull rope is connected with the sleeve; the water container is placed on the electronic scale, water is injected into the water container, the sleeve is placed in the water container and does not make contact with the water container, and the rock sample is completely immersed in the water; the pressurizing device is used for pressurizing water in the water container, and the electronic scale monitors the weight change in real time. The problems that in a traditional water absorption test, water absorption amount data cannot be continuously and automatically collected in real time, the whole water absorption process cannot be dynamically monitored, weak rock easy to disintegrate cannot be tested, and the water pressure environment borne by the rock cannot be simulated and regulated and controlled are solved.
Owner:INNER MONGOLIA RESEARCH INSTITUTE CHINA UNIVERSITY OF MINING AND TECHNOLOGY (BEIJING) +2

Device and method for measuring and predicting thermal expansion force and deformation of high-temperature rock in real time

The invention relates to the technical field of rock mechanics, in particular to a real-time measurement and prediction device and method for thermal expansion force and deformation of high-temperature rock. The real-time measurement and prediction device comprises a base, a computer control system and a prediction machine. The high-temperature-resistant resistance stress ring, the differential axial extensometer and the differential circumferential extensometer upload measured data to the resistance-type strain tester in real time, the resistance-type strain tester synchronously transmits the received data to the computer control system, and the computer control system transmits the collected data to the prediction machine. The prediction machine extracts predictive characteristics in various data, a prediction result is output to the computer control system through the prediction model, the computer control system calculates the thermal expansion force and deformation of the rock in real time based on the prediction result, by adopting the structure, the thermal expansion force and deformation of the rock can be automatically, synchronously and accurately measured in real time in a real high-temperature environment, and the rock thermal expansion force and deformation measurement accuracy is improved. And large difference between a measurement result and an actual working condition is avoided.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY +1

Tidal waterway earthquake multi-attribute description method and device under gypsum salt-carbonate rock symbiosis background

The invention belongs to the technical field of petroleum and natural gas exploration and development, and discloses a tidal waterway earthquake multi-attribute description method and device under the gypsum salt-carbonate rock symbiosis background. According to the method, rock physical parameters are calibrated based on logging data, a parameterized model is established for forward modeling, and the seismic recognition lower limit of a tidal passage is quantitatively determined; adaptive optimization and multi-dimensional fusion are carried out on various seismic attributes by using an integrated learning model, and fine and reliable identification of the tidal tract is realized; in combination with a tidal tract-mudstone shielding reservoir forming mode, favorable lithologic traps are screened and quantitatively evaluated from identification results; the oil-gas possibility is verified through well drilling, and the model is driven to be continuously optimized by actually measured geological data feedback. According to the method, the influence of interference factors such as faults is effectively inhibited, the continuity and boundary definition of tidal passage display are improved, and hidden lithologic trap identification is successfully guided.
Owner:YANGTZE UNIVERSITY

A sampling system based on rock geological environment treatment and application

This application provides a sampling system and application for rock geological environment management, including sampling tool components. This application uses electromagnetic control to direct the magnetic poles of a third electromagnet. When the magnetic poles of the third electromagnet are opposite to those of a fourth magnet, a repulsive force is generated between the third electromagnet and the fourth magnet, pushing the fourth magnet away from the third electromagnet. This, in turn, drives a second gear to rotate via a first toothed plate, which in turn drives the first gear to rotate. The first gear then moves the second toothed plate, pushing out a second arc-shaped toothed plate. The second arc-shaped toothed plate engages with a fixed tooth to fix the fixed tooth.
Owner:SICHUAN RONG GRP YIBIN CHUANNAN CONSTRUCT ENG CO LT

Construction and application of rock strength and toughness property collaborative prediction model

This invention relates to the construction and application of a collaborative prediction model for rock strength and toughness properties. Addressing the problems of size effect, single-parameter prediction limitations, and difficulties in cross-scale mapping in existing rock strength and toughness parameter testing technologies, the following key technical solutions are proposed: constructing a model that includes geometric parameters (L / W / S / B) and crack characteristics (…). a 0 / Δ a fic ), particle size parameters ( g av A dataset with 9-dimensional multi-source heterogeneous features, including Whale Optimization (WOA), is used to adaptively optimize the learning rate and hidden layer nodes of a Radial Basis Function Neural Network (RBFNN) to establish... f t - K IC A two-parameter synchronous prediction model. This model reveals the virtual crack propagation (Δ) through SHAP interpretability analysis. a fic ) and average particle size ( g av ) is the key controlling variable, for f t and K IC The predictive determination coefficient ( R ²) Reaching 0.997 and 0.996 respectively, it breaks through the limitation of small sample size effect and realizes cross-scale mapping from laboratory parameters to engineering scale, providing efficient and accurate technical support for the stability assessment of deep rock mass engineering.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Rock multi-parameter detection method, device and system

The invention provides a rock multi-parameter detection method, device and system, and the method comprises the steps: obtaining a to-be-detected rock, and carrying out the preprocessing of the to-be-detected rock; performing parameter detection on the to-be-detected rock to obtain detection data of the to-be-detected rock; the parameter detection comprises wave velocity measurement, dielectric measurement and spectral measurement; the detection data comprises wave velocity data, dielectric data and spectral data; and carrying out standardization processing on the detection data of the rock to be detected, and carrying out iterative optimization through a pre-trained data association model to invert physical parameters of the rock to be detected. According to the invention, the internal relation and mutual influence among different physical quantities are fully considered, the error and uncertainty of a single test method are effectively eliminated, the comprehensive characteristics of the rock to be tested can be comprehensively reflected, and the problems of incomplete detection and poor accuracy in the prior art are solved.
Owner:WUHAN UNIV

Determination method and determination method for seepage starting pressure gradient of low-permeability rock

The invention provides a determination method and a determination method for a seepage starting pressure gradient of a low-permeability rock. The determination method comprises the following steps: determining whether a starting pressure gradient and a quasi-starting pressure gradient exist in the movement of a fluid in a seepage channel according to a first corresponding relationship among first parameters of the low-permeability rock; wherein the first parameters comprise the thickness h of weakly bound water on the surface of the low-permeability rock, the distance L from the boundary of the inner-layer weakly bound water and the outer-layer weakly bound water to the surface of the low-permeability rock and the minimum pore throat radius r of single seepage channels communicated with one another of the rock; the first corresponding relation comprises: if rgt; h, the starting pressure gradient and the quasi-starting pressure gradient do not exist; if Llt; rlt; h, the starting pressure gradient does not exist, but the quasi-starting pressure gradient exists; if rlt; l, the starting pressure gradient and the quasi-starting pressure gradient exist at the same time. According to the method, the rock-fluid property and the solid-liquid interface theory are combined, and whether the starting pressure gradient and the quasi-starting pressure gradient exist or not can be judged accurately.
Owner:CHINA NAT PETROLEUM CORP +1

Experimental apparatus and method for high-temperature rock thermal shock treatment

This invention provides an experimental apparatus and method for rapidly cooling high-temperature rocks to induce thermal shock and for monitoring thermal shock damage during the process. The apparatus includes a heating furnace and a cooling tank. An upper water inlet connected to a storage tank allows coolant to be introduced into the cooling tank, while a lower water inlet allows coolant to flow out. Both the upper and lower water inlets are equipped with orifice flow meters. By setting the same flow rates for both inlet and outlet water, the coolant in the cooling tank can be kept flowing stably, thus maintaining a constant temperature of the coolant within the tank during the cooling of the high-temperature rocks. This invention enables rapid cooling of high-temperature rocks in a constant temperature field to induce thermal shock, and utilizes optical and acoustic technologies to achieve real-time monitoring of the evolution of internal thermal damage during the thermal shock process, allowing for quantitative characterization of the thermal shock damage in high-temperature rocks.
Owner:SUN YAT SEN UNIV

Rock resistivity measurement method considering moisture content change and application

The invention relates to the technical field of geological survey, and particularly discloses a rock resistivity measurement method considering water content change and application. The method comprises the following steps: firstly, synchronously acquiring initial mass and initial volume parameters of an on-site rock sample by using a weighing method and a drainage method, and further accurately calculating the initial density of the on-site rock sample; in the rock processing link, after the rock is processed into a regular geometrical shape, the rock volume is accurately measured, the theoretical mass is calculated by combining the initial density, meanwhile, the actual mass is obtained by adopting a weighing method, and the moisture content of the rock is accurately regulated and controlled by adopting a dehydration method or an infiltration method by comparing the difference between the theoretical mass and the actual mass. The deviation between the density of the processed rock and the initial density is controlled within an extremely small range, so that the initial physical state of the rock in the natural environment is effectively restored, and the measurement of the initial resistivity of the rock is realized. And the resistivity measurement result deviates from the true value of the natural state due to the significant change of the moisture content.
Owner:ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD +1

Method, system, equipment and storage medium for predicting and evaluating the hydrogen generation potential of rocks

The present invention relates to a method, system, device and storage medium for predicting and evaluating the hydrogen generation potential of rocks, which belongs to the field of hydrogen source rock evaluation technology. The method includes the following steps: 3+ / Fe Tot ratio, and the Fe 3+ / Fe Tot The relationship between the ratio and the serpentinization degree is used to calculate the serpentinization degree of the rocks in the study area; based on the serpentinization degree of the rocks in the study area and the relationship between the hydrogen generation potential of the rocks and the serpentinization degree, the hydrogen generation potential of the rocks in the study area is predicted. 3+ / Fe Tot The ratio is used to calculate the prediction of the hydrogen generation potential of rocks in the study area, which solves the problem of difficulty in predicting and rating the hydrogen generation potential of rocks in areas with low research level and lack of basic data, and provides more reliable basic data for the research on the hydrogen generation potential of hydrogen source rocks and hydrogen resource evaluation.
Owner:PETROCHINA CO LTD

Apparatus and method for measuring the effect of rock on the change of components in a water sample

The application provides a device and method for measuring the influence of rock on the component change in a water sample. The application focuses on the change characteristics of the components in the water sample during the test process, and the influence of the natural rock composition and structure on the component change in the water, and is beneficial to the evaluation of the influence of the rock mass in the underground reservoir on the component content change in the water storage. The measuring method is simple in operation and reliable in result.
Owner:SHENHUA SHENDONG COAL GRP +2

A method and device for testing the natural frequency of small-sized cylindrical rocks

The present invention relates to a method and device for testing the natural frequency of small-sized cylindrical rocks, comprising the following steps: preparing a standard cylindrical rock sample; performing vibration experiments on the rock sample at different frequencies, and detecting the rock sample vibration data using an axial strain gauge and a radial strain gauge; converting the rock sample vibration data detected by the axial strain gauge and the radial strain gauge into voltage peak-to-peak values ​​respectively; obtaining the axial strain and radial strain at different vibration frequencies based on the voltage peak-to-peak values; obtaining the volume strain at different vibration frequencies based on the axial strain and radial strain at different vibration frequencies; and obtaining the natural frequency of the rock sample based on the variation law of the volume strain. The present invention can test the natural frequency of the rock sample, which can approximately reflect the natural frequency of the rock. The rock can be subjected to acoustic vibration at this frequency, which is conducive to causing vibration damage to the shale rock, thereby increasing the microcracks in the rock, and improving the permeability of the shale, thereby effectively improving the shale oil and gas recovery rate.
Owner:SOUTHWEST PETROLEUM UNIV

Included body total stress-strain constitutive equation construction method based on volumetric quadratic moment

The invention discloses a volume quadratic moment-based inclusion total stress-strain constitutive equation construction method, which comprises the following steps of: manufacturing a spatial variability artificial sample comprising an inclusion and a matrix material, and maintaining the spatial variability artificial sample for preset days; carrying out a compression test on the spatial variability artificial sample, and recording a whole-process stress curve, characteristic stress and strain data; based on the parameters of the spatial variability artificial sample, calculating the volume quadratic moment of the inclusion; fitting a function relation between the volumetric quadratic moment and the characteristic stress and strain data based on the characteristic stress and strain data and the volumetric quadratic moment of the inclusion; fitting a total stress curve according to the function relation; the method designed by the invention breaks through the limitation of traditional homogenization hypothesis, directly predicts the total stress curve of a new sample by using the model, reduces repeated experiment requirements, is used for simulating rocks with spatial variability in nature, and has a wide application prospect in the field of rock mass research.
Owner:HOHAI UNIV +1

A device and method for testing rock deformation characteristics under controllable periodic confining pressure impact conditions

The present invention discloses a device and method for testing rock deformation characteristics under controllable periodic confining pressure impact conditions. This device belongs to the field of marine rock mechanical parameter measurement and includes a water tank equipped with: a base located at the bottom of the water tank for supporting a rock sample; a strain gauge disposed on the surface of the rock sample for measuring strain signals; an axial pressure rod disposed at the upper end of the rock sample for applying an axial load to the rock sample; an acoustic emission probe disposed within the axial pressure rod for detecting elastic wave signals from the rock sample; a vertically arranged scale guide rail with its bottom fixed to the water tank; a confining pressure impact component slidingly mounted on the scale guide rail; a lifting controller for controlling the elevation of the confining pressure impact component, which simulates the confining pressure impact of waves on the rock sample through free fall; and a data collection and controller for receiving elastic wave and strain signals. This invention achieves a realistic reproduction of the multi-field coupled mechanical behavior of rock in marine environments.
Owner:UNIV OF SCI & TECH BEIJING

Three-dimensional prefabricated concrete planting box fixing structure

PendingCN122460376AFreeze thawingPlant roots
The application provides a three-dimensional prefabricated concrete planting box fixing structure, which comprises a rock slope, a planting box body is arranged on one side of the rock slope, and an anchoring ear plate is connected to the outer side of the planting box body; the anchoring ear plate is provided with a plurality of anchoring holes, and a fixing anchor rod is installed in the anchoring holes; the abutting part of the rock slope and the planting box body is trimmed into a chiseled surface. The planting box body adopts a bird nest-shaped structure, the crack resistance, impact resistance and freeze-thaw resistance of the planting box are improved, the bird nest-shaped appearance and the arc-shaped inner cavity of the planting box body meet the mechanical requirements, are beneficial to the growth of plant root systems and the integration of landscapes, and significantly improve the ecological effect and visual effect of rock body three-dimensional greening. The reliable fixing between the planting box body and the rock slope is realized through the anchoring ear plate, the planting box body is more stable during use, the planting box body and the anchoring ear plate can be prefabricated in a factory and assembled on site, the construction efficiency is improved, and the construction difficulty and cost in mountainous areas are reduced.
Owner:张文平

Tunnel surrounding rock mechanical parameter inversion method based on parrot optimization algorithm

The invention relates to a method for inverting tunnel surrounding rock mechanical parameters based on a parrot optimization algorithm. Comprising the following steps: S1, determining a constitutive model of tunnel surrounding rock according to a geological survey report or an indoor and outdoor rock mechanics test result, and establishing an ABAQUS numerical calculation model of the tunnel surrounding rock; s2, converting a parameter inversion problem into an optimization problem, and establishing an objective function of the inversion optimization problem; s3, solving the target function by adopting a parrot optimization algorithm; s4, subsequent excavation of the tunnel is guided according to the surrounding rock mechanics obtained through inversion; the method effectively solves the problem that the tunnel surrounding rock mechanical parameters are difficult to rapidly and reasonably valued.
Owner:GUANGXI CHANGCHANG ROAD & BRIDGE CONSTR

Rock mass property single-hole sound wave and press-in sounding combined measuring device and using method thereof

The invention provides a rock mass property single-hole sound wave and press-in sounding combined measuring device and a using method thereof, and relates to the technical field of rock soil and rock mechanics testing, the device comprises a sound wave detection device and a press-in sounding device, the sound wave detection device analyzes medium properties mainly by measuring propagation characteristics of sound waves in underground media, and the press-in sounding device analyzes the medium properties mainly by measuring the propagation characteristics of the sound waves in the underground media. Judging whether a shallow layer crack exists or not; the press-in sounding device can press the sounding teeth into a hole wall rock mass to obtain mechanical parameters of the rock mass, the shapes of the sounding teeth can be changed according to different use scenes so as to form different indentations, and the drilling hole wall can be sheared by the sounding teeth through the guide rod stretching measurement device. According to the device, in-situ rock mass parameters are directly obtained in a lossless or micro-damage mode, the influences of sampling disturbance, the scale effect and environmental factors are overcome, the compression resistance and shear resistance of the rock mass can be evaluated at the same time, and multiple rock mass mechanical behavior testing requirements are met.
Owner:SHANDONG UNIV OF SCI & TECH

A method for artificial afforestation on rock mountain

A method for artificially planting trees on rocky hillsides, belonging to the field of hillside planting technology. It includes the following steps: demarcating a planting area on the slope; excavating explosive holes in the rocky hillside within the planting area; filling and detonating explosives in each explosive hole to create cracks in the rocky hillside within the planting area; pouring a cement layer over the planting area; excavating explosive holes in the cement layer; filling and detonating explosives in the cement layer to create cracks within the cement layer; laying a soil layer on top of the cement layer; planting saplings on the soil layer; and providing ample irrigation to the saplings during cold, freezing weather each year, as the expanding water upon freezing will widen the cracks in the cement layer and the rocky hillside. Advantages: It helps improve the survival rate of saplings; it effectively promotes sapling growth.
Owner:王永葵

Method for recovering vegetation in karst mountainous region by taking nitrogen-fixing precious tree species as driving species

The invention provides a karst mountain vegetation restoration method with nitrogen fixation precious tree species as driving species, and belongs to the technical field of vegetation restoration. According to the method, the precious nitrogen-fixing tree species are selected as pioneer tree species for vegetation recovery, the soil environment of the karst mountain land is effectively improved, the soil becomes more fertile, and the trees have good economic benefits; after the canopy density of the forest stand reaches 0.6, complementary planting is carried out, tree species adopted for complementary planting are precious tree species with good economic benefits, vegetation of the karst mountain land can be recovered, economic benefits can be generated to benefit local people, and the enthusiasm of people for recovering the vegetation of the mountain land is improved; meanwhile, the karst mountainous region with large-area exposed rocks is transformed through the vine plants, the rock region is covered, the method is low in cost, a protective net does not need to be built, operation is convenient, and manpower and material resources are saved.
Owner:TROPICAL FORESTRY EXPERIMENTAL CENT OF CHINESE ACAD OF FORESTRY SCI

Modeling and calculating method of phanerocrystalline rock with bedding structure based on neper-dem

The application discloses a Neper-DEM-based modeling and calculation method of phanerocrystalline rocks with bedding structure, relates to the numerical calculation field of tunnel engineering technology, and solves the problem that the prior art lacks a simulation and calculation method of phanerocrystalline rocks such as gneiss and granulitic gneiss with transverse isotropy; the application comprises the following steps: constructing a polycrystal structure with crystal characteristics in Neper, and then generating the polycrystal structure into a geometric parameter text of a crystal grain; constructing a discrete element rock sample model in DEM; performing numerical simulation test on the discrete element rock sample model to obtain a stress-strain curve and a sample failure mode, wherein the numerical simulation is realized by adopting a Brazilian split test and a triaxial test; calibrating discrete element sample calculation parameters according to the numerical simulation result, and verifying the effectiveness of the modeling and calculation method of the discrete element rock sample model; and the application realizes the construction and assignment of the crystal structure and the bedding structure at the same time in the modeling method, so that the rock structure is closer to the real rock structure.
Owner:SOUTHWEST JIAOTONG UNIV +1

System and method for measuring mechanical properties of rock in humidity environment

The invention relates to the technical field of rock mechanical property testing, and discloses a system and a method for measuring rock mechanical properties in a humidity environment. The test system comprises a mechanical loading module, a box body and an environment control module. And the mechanical loading module is used for loading and unloading normal stress of the rock. A containing cavity is formed in the box body, and an inlet-outlet is formed in one side of the box body and provided with an opening-closing door. The box body has a first position and a second position; at the first position, at least part of the mechanical loading module is located in the accommodating cavity; and at the second position, the mechanical loading module is positioned outside the accommodating cavity. The environment control module comprises a temperature adjusting unit and a humidity adjusting unit which are arranged in the box body, and the temperature adjusting unit is used for adjusting the temperature in the containing cavity; the humidity adjusting unit is used for adjusting the humidity in the containing cavity. According to the invention, a mechanical loading function and an environment simulation function are efficiently combined, and a complex humidity-stress coupling test can be carried out.
Owner:CCTEG COAL MINING RES INST

A rock wave velocity dynamic monitoring test system for simulating gas content change of a hydrocarbon source rock

The present application belongs to the technical field of rock wave velocity monitoring, and particularly relates to a rock wave velocity dynamic monitoring test system for simulating gas content change of source rock, comprising: a rock wave velocity and desorbed gas combined monitoring system, a gas chamber for placing a core column sample is arranged in the rock wave velocity and desorbed gas combined monitoring system, the gas chamber has a gas inlet end and a gas outlet end, and the gas pressure in the gas chamber is adjustable; a desorbed gas recovery system, the number of the desorbed gas recovery system is matched with that of the rock wave velocity and desorbed gas combined monitoring system, the gas inlet end of the desorbed gas recovery system is communicated with the gas outlet end of the rock wave velocity and desorbed gas combined monitoring system, and the desorbed gas recovery system is used for recovering desorbed gas; a constant temperature system, the rock wave velocity and desorbed gas combined monitoring system and the desorbed gas recovery system are arranged in the constant temperature system; the constant temperature system is used for providing a temperature environment required by the rock wave velocity and desorbed gas combined monitoring system; and a gas supply control system, connected with the gas inlet end of the rock wave velocity and desorbed gas combined monitoring system, used for supplying gas and detecting the gas pressure of the gas chamber.
Owner:CHINA UNIV OF MINING & TECH