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75 results about "Weathering" patented technology

Weathering is the breaking down of rocks, soil, and minerals as well as wood and artificial materials through contact with the Earth's atmosphere, water, and biological organisms. Weathering occurs in situ (on site), that is, in the same place, with little or no movement, and thus should not be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, snow, wind, waves and gravity and then being transported and deposited in other locations.

Construction method applied to underground mine vertical shaft surrounding rock condition improvement

The invention discloses a construction method applied to underground mine vertical shaft surrounding rock condition improvement. The construction method comprises the steps that a flat working face is cleaned, a temporary water nest is arranged for drainage, the drilling position is projected, and a down-the-hole drill is debugged; rock drilling is conducted according to the designed angle, direction and depth, propelling pressure is adjusted along with the depth, and cleaning and plugging are conducted after hole forming; grouting pipes with holes are used as pipe sheds to be driven into the holes, and are welded into a whole through annular steel bars; single-liquid-slurry and double-liquid-slurry segmented grouting is adopted, and the grouting pressure is controlled; during construction, grout diffusion and stratum deformation are monitored, after surrounding rock consolidation reaches the standard, weak blasting is matched with a small excavator for excavation, and after acceptance inspection is qualified, reinforcing steel bars are bound, formworks are installed, and concrete is poured. Compared with the prior art, the problems of collapse and water gushing of the vertical shaft under the strong weathering and water-rich geology can be solved, and the defects of insufficient supporting strength, grouting uniformity, construction efficiency and long-term stability in the traditional technology are overcome.
Owner:HUNAN LIANSHAO CONSTR ENG GRP

Method and system for optimizing anti-seismic stability of engineering slope

The invention relates to the technical field of slope seismic resistance, and discloses an engineering slope seismic stability optimization method and system, and the method comprises the steps: collecting flood discharge tunnel outlet slope data and seismic oscillation parameter values, and carrying out the partitioning according to the flood discharge tunnel outlet slope general situation data; analyzing rock mass weathering and unloading and physical geology phenomena in each area to obtain physical mechanical parameter suggestions; establishing a three-dimensional model of the flood discharge tunnel outlet slope based on the physical and mechanical parameter suggestions and the seismic oscillation parameter values; inputting the non-uniform seismic dynamic load into the three-dimensional model of the flood discharge tunnel outlet slope for analog calculation; establishing a side slope geomechanical model, and performing simulation verification; and comparing the simulation verification result of the side slope geomechanical model with a preset rule threshold value, if the simulation verification result of the side slope geomechanical model is greater than the preset rule threshold value, performing early warning, uploading the simulation verification result of the side slope geomechanical model to a cloud platform, and performing visual output. According to the invention, comprehensive analysis and management of the flood discharge tunnel outlet slope under the earthquake effect are realized.
Owner:HUANENG LANCANG RIVER HYDROPOWER CO LTD +2

Simulated earthen ruin rammed earth test wall manufacturing method based on original diseases

The invention discloses a method for manufacturing a simulated earthen ruins rammed earth test wall based on original diseases, and relates to the field of earthen ruins protection and restoration. The method comprises the following steps: step 1, determining earthen archaeological site diseases to be researched and preparing materials; 2, mold assembling and disease marking are carried out; 3, layered ramming is conducted; step 4, crack disease processing; step 5, performing undercutting disease processing; 6, weathering disease processing; step 7, processing rain erosion diseases; and step 8, northwest environment simulation. The earthen archaeological site rammed earth wall is manufactured by integrating multiple disease collaborative simulation technologies of fissure, undermining, weathering and rain erosion, meanwhile, adaptability design of a strong wind erosion area, a strong sunshine area and a strong salinization area is made for northwest arid areas, and the method has the core advantages of disease reproduction authenticity, standardized grading, environment adaptability and the like; a scientific and reasonable technical means is provided for earthen archaeological site protection engineering, and a reliable test piece is provided for research and development of a protection technology.
Owner:SHAANXI PUNING ENG STRUCTURE SPECIAL TECH +2

Geological sketching method for tunnel faces based on image spectrum technology, and system thereof

An image spectrum technology-based geological sketching method, including: based on collected image-spectrum data information of a tunnel face, extracting mineral end members and spectrum to determine types and contents of minerals, extracting texture features and feature waveband spectrums to determine stratum lithology, extracting crack features and identifying crack fillers to obtain a crack identification result; obtaining degrees of crushing of surrounding rocks according to numbers and relative areas of cracks; analyzing weathering variation proportions of minerals according to stratum lithology and mineral analysis result for surrounding rocks, acquiring color differences between different degrees of weathering according to spectral color difference identification results, obtaining degrees of weathering of the surrounding rocks; identifying water outflow form and water outflow position of tunnel face to be detected; and obtaining a geological sketch map for the tunnel face by performing labeling and summarization by using different labeling symbols according to the results.
Owner:SHANDONG UNIV

A sandstone cultural relic weathering evaluation method based on physical-manifold collaborative driving of multi-source heterogeneous data fusion

This invention discloses a method for assessing the weathering of sandstone artifacts based on the fusion of multi-source heterogeneous data driven by physical-manifold collaboration, belonging to the field of cultural relic protection technology. Addressing the contradiction that surface spectral data of sandstone artifacts is dense but cannot probe the interior, while internal physical data is accurate but extremely sparse and lossy, this invention proposes a "surface-to-interior" fusion strategy. First, using a physical information deep learning model, physical partial differential equations are introduced as prior constraints to extrapolate sparse point data into a continuous deep physical tensor across the entire field, achieving a "penetrating" effect. Second, based on Riemannian manifold geometry, spectral-physical enhancement features are mapped to the tangent space to extract noise-resistant surface manifold features. Furthermore, through coupled tensor decomposition, deep mechanisms and surface properties are forcibly aligned in the latent feature space. Finally, a high-order Laplacian hypergraph model is used to achieve pixel-level classification of weathering degree. This method effectively solves the problems of spatial scale mismatch and missing physical mechanisms in multi-source data, achieving a non-destructive, full-field, and accurate quantitative assessment of the weathering status of cultural relics.
Owner:CHONGQING UNIV

Deep pillar-oriented digital geological strength index intelligent acquisition method

A kind of digital geological strength index intelligent acquisition method for deep pillar, first obtains the digital image of the pillar surface and carries out pretreatment;Based on image automatic identification joint fissure, extract trace length, direction, spacing and opening degree and other geometric and structural parameters;At the same time, identify the apparent weathering degree of rock mass to determine the weathering grade;And build three-dimensional model to extract surface roughness parameter. Further, the above structure, roughness, opening degree and weathering information are integrated to construct the comprehensive index JSVI of apparent joint quality of the pillar. Finally, the JSVI is coupled with the rock mass structure grade parameter SR to establish the GSI calculation model, realizing the non-contact, objective and digital expression of the pillar rock mass quality. The method is simple in implementation process and low in implementation cost. Based on digital image and intelligent identification technology, the whole process automation, objectivity and quantification of deep hard rock pillar rock mass fissure structure parameters, structure surface state index and geological strength index are realized.
Owner:CENT SOUTH UNIV

Environment control device for simulating carbonate rock weathering under freezing and thawing cycle

The invention relates to the technical field of carbonate rock detection, and discloses an environment control device for simulating carbonate rock weathering under freeze-thaw cycle, which comprises an environment simulation cabinet, a water tank is fixedly mounted in the control cabinet, a water pump is fixedly mounted in the water tank, and the output end of the water pump is fixedly connected with a valve. The valve is connected with a spraying mechanism and an atomizing mechanism, a partition plate is fixedly connected to the interior of the environment simulation cabinet, a machine box is fixedly connected to the outer wall of the partition plate, a fan is fixedly installed in the machine box, and a refrigerating machine and a heating pipe are fixedly installed on the outer wall of the partition plate. By integrating core components such as a spraying mechanism, an atomizing mechanism, a refrigerating machine, a heating pipe and a fan, freezing and thawing circulation can be reproduced, complex natural conditions such as rain wash, high-humidity foggy days and natural wind power can be simulated, various weathering scenes of carbonate rocks in the natural environment are comprehensively covered, and an experimental platform which is more practical is provided for research of a weathering mechanism.
Owner:KUNMING COMPREHENSIVE NATURAL RESOURCES SURVEY CENT OF CHINA GEOLOGICAL SURVEY

Apparatus for simulating lunar space weathering of lunar breccia and a simulation method thereof

This invention discloses a device and method for simulating the space weathering of lunar rocks. The device includes a vacuum chamber, a stage, a vacuum control module, a temperature control module, a pulsed laser module, a high-energy ion beam module, a microscope module, and a control module. The vacuum chamber is hollow, forming a vacuum cavity. The stage is located inside the vacuum chamber. The vacuum control module is located on the vacuum chamber. The temperature control module, pulsed laser module, and high-energy ion beam module are all connected to the vacuum chamber. The microscope module is located inside the vacuum chamber, facing the stage. The control module is electrically connected to the vacuum control module, temperature control module, pulsed laser module, and high-energy ion beam module. By integrating and precisely controlling multiple modules, the device simulates the space weathering of lunar rocks, realizing a scenario where multiple space weathering factors act together, thus improving the realism of ground-based simulation experiments.
Owner:SHENZHEN UNIV

Mine underground wall surface structure

The utility model discloses a mine underground wall surface structure, and belongs to the field of mine underground support. The mine underground wall surface structure comprises a surrounding rock base layer, a transition layer and a guniting layer which are sequentially stacked, and the transition layer is a siloxane layer. The mine underground wall surface structure is more stable in structure, good in supporting effect, capable of effectively preventing a surrounding rock base layer from falling off and weathering for a long time, and capable of effectively guaranteeing safe operation of a mine underground.
Owner:HUNAN UNIV +2

Method for accelerating weathering and soil forming of waste concrete through microbial fermentation

The invention discloses a method for accelerating weathering and soil formation of waste concrete by microbial fermentation, which comprises the following steps: crushing the waste concrete into blocks with the particle size of 20-50cm, retaining the fracture structure of the blocks, mixing the concrete blocks with biomass, adding 0.3-0.5% of compound microbial agent which specifically comprises acid-producing bacteria, cellulose degrading bacteria and silicate weathering bacteria into the mixed material, and uniformly stirring to obtain a mixture; composting the mixed material, controlling the temperature of the pile body to be 40-55 DEG C, maintaining for at least 15 days, and gradually decomposing the concrete block body by utilizing the synergistic biological weathering effect of organic acid generated by microbial metabolism and the microbial corrosion effect in the fermentation process. According to the method disclosed by the invention, the dynamic bottleneck of decomposition of calcium silicate minerals in concrete blocks is broken through by virtue of synergistic fermentation of the composite flora and the biomass and the coupling effect of organic acid release and biological erosion, and the crushing energy consumption is reduced compared with that of a traditional fine crushing process; and a novel green conversion method integrating rapid soil formation, nutrient activation and pollution prevention and control is formed.
Owner:KUNMING UNIV OF SCI & TECH

Unstable slope monitoring and pre-treatment system

The invention discloses an unstable slope monitoring and pre-treatment system which comprises a slope body, anchor rod structures are evenly arranged on the upper side of the slope body, a flexible protective net is laid on the slope body, and the flexible protective net is connected with the upper sides of the anchor rod structures. The device has the beneficial effects that in the aspect of pre-treatment, the anchor rod structures evenly arranged on the upper side of the slope body play a key role, the conical head on the lower side of the anchor rod body can penetrate into the slope conveniently, the interior of the conical head is hollow and is provided with the fixed piece, the movable piece and other structures, and the movable piece can be driven to move by rotating the screw rod; furthermore, the anchor rod main body is tightly combined with surrounding rock and soil bodies through the transmission block and the U-shaped frame, the stability of the slope is greatly enhanced, meanwhile, the flexible protective net laid on the slope main body is connected with the upper side of the anchor rod structure, overall protection is formed, and the rock and soil on the slope surface are effectively prevented from being weathered, peeled off and collapsed.
Owner:CHONGQING NO 607 RECONNAISSANCE & SURVEY IND GENERAL CO

Method for preventing weathering of high-thick brick city wall surface layer

ActiveCN117418716BBrickChemical reaction
The application discloses a high-thick-brick city wall surface layer weathering prevention method and belongs to the field of historical building protection. The weathering prevention method controls the chemical reaction of a hydrophobic material, reduces the mass of hydrophobic substances generated by the chemical reaction in the penetration process, avoids the influence of the penetration process of weak hydrophobic substances on the penetration coefficient of the city wall surface layer bricks, prolongs the penetration time of the hydrophobic material, improves the penetration depth of the hydrophobic material in the city wall surface layer, weakens the dry shrinkage reciprocating change, realizes the deformation and stress coordination of the waterproof layer of the city wall surface layer and the internal wall body, avoids the stress concentration phenomenon of the waterproof layer shell, further achieves the purpose of preventing the weathering effect of external rain and snow immersion into the city wall surface layer and limiting the salt accumulation caused by the evaporation of the water in the city wall, realizes the purpose of deeper penetration of the hydrophobic material into the city wall, and solves the weathering diseases of the high-thick-brick city wall.
Owner:TIANJIN UNIV

Slope rock mass structure plane generalization identification method and system based on multi-level domain adaptation

This invention discloses a generalized identification method and system for slope rock mass structural surfaces based on multi-level domain adaptation. This invention relates to the field of slope rock mass identification technology. By constructing four levels—global domain adaptation, regional domain adaptation, local domain adaptation, and sample-level adaptive adaptation—this invention achieves hierarchical and progressive evolution of model capabilities. A variational autoencoder is used to explicitly decouple features into domain-invariant and domain-specific parts, enabling the model to distinguish between the essential geometric features of rock mass structural surfaces and the weathering and unloading features of specific regions. Through regional meta-learning training, it can quickly adapt to new regions with only a small number of labeled samples.
Owner:四川省建筑机械化工程有限公司 +1

Method and apparatus for identifying lithology and weathering degree based on drill pipe vibration signals

PendingCN122286281ALithologyTime domain
This invention relates to the field of mine roadway and traffic tunnel technology. To accurately identify the lithology and weathering degree of rocks within boreholes in real time, it provides a method and device for identifying lithology and weathering degree based on drill rod vibration signals. Based on a six-component vibration sensing architecture with an octahedral structure, it achieves six-component full-dimensional sensing of drill bit rock-breaking vibration acceleration signals. A triple filtering method is used to remove interference, and the vibration frequency is corrected by combining the drill rod length to eliminate the interference of drill rod length changes on the vibration frequency during drilling. The corrected signal is processed by frame segmentation, extracting time-frequency features and time-domain features respectively. Finally, a borehole lithology and weathering degree identification model composed of CNN branches and MLP branches is constructed. The CNN branch automatically learns the local correlation patterns of time-frequency features, and the MLP branch automatically combines the nonlinear relationships in the time-domain features, thereby achieving efficient and accurate identification of borehole lithology and weathering degree.
Owner:CHINA 19TH METALLURGICAL CORP +1

Mine rock slope supporting structure

The utility model provides a mine rock slope supporting structure which comprises fixing beams and plastic particles, and the multiple fixing beams form a latticed structure and are used for being arranged on the surface of a mine rock slope. The plastic particles are arranged in the latticed structure, the surface of the mine rock slope is filled with the light plastic particles with good water permeability, the additional load of the slope can be reduced, secondary slippage caused by self weight is avoided, seepage rainwater can be rapidly drained through the good water permeability of the plastic particles, and pore water pressure can be reduced; secondly, a sealing layer is further formed on the surface of the side slope, the sealing layer can form a surface layer anti-scouring shell, the plastic particles are sealed in a latticed structure, the plastic particles and an anchoring structure below are protected, the broken rock mass is sealed and solidified, and the anti-scouring performance of the surface layer is improved. Surface rock blocks are prevented from falling off due to vibration or weathering, and the risk of local collapse is reduced.
Owner:CHINA MINMETALS CHANGSHA MINING RES INST

A method, device and equipment for constructing a weathered zone surface structure model

The application discloses a kind of weathering zone surface structure model construction method, device and equipment, the method includes: based on the corresponding relative elevation data of each survey point in study area, the corresponding relationship of weathering layer thickness and relative elevation data in study area is determined, to determine the weathering layer thickness corresponding to each physical point in study area;Based on the time-depth curve fitted by time-depth data fitting of micro-logging survey in study area, the corresponding relationship of weathering layer thickness and average speed of each survey point in study area is determined, and the corresponding relationship of weathering layer thickness and average speed in study area is fitted, to determine the weathering layer average speed corresponding to each physical point;Based on the weathering layer thickness and weathering layer average speed corresponding to each physical point, the weathering zone surface structure model of study area is constructed.The method not only reduces the input of thick weathering zone surface investigation exploration equipment, but also more finely analyzes the change of thick weathering layer average speed in longitudinal and transverse directions to meet the demand of subsequent process on surface structure data.
Owner:CHINA NAT PETROLEUM CORP +1

Full weathered granite overburden layering grouting method and device based on adaptive frequency conversion, electronic equipment and non-transient computer readable storage medium

The application discloses a full-strong weathered granite covering layer layered grouting method and device based on adaptive frequency conversion, electronic equipment and a non-transient computer readable storage medium, and belongs to the technical field of rock soil grouting. The full-strong weathered granite covering layer layered grouting method based on adaptive frequency conversion comprises the following steps: obtaining a full-strong weathered granite sample, jointly analyzing the full-strong weathered granite sample based on geological exploration and water pressure test, and obtaining the weathering degree of the full-strong weathered granite sample; dividing the full-strong weathered granite sample based on the weathering degree to obtain different grouting units; using grouting materials and water-cement ratios with different particle sizes to perform staged and progressive adaptive frequency conversion grouting on each grouting unit based on an adaptive frequency conversion grouting model; and when the grouting is completed, sealing holes of each grouting unit to obtain the full-strong weathered granite sample after layered grouting. The method improves the efficiency and accuracy of full-strong weathered granite grouting.
Owner:FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER +1

Device for accelerating weathering of selected solid waste into soil by utilizing solar energy

The utility model discloses a device for accelerating weathering of selected solid waste into soil by utilizing solar energy. The device comprises a solar heat collector, a liquid storage tank, a first one-way valve, a heat pipe, a first pressure pump, a gate valve, a reactor, a filler pipe, a thermometer, a second pressure pump, a second one-way valve and a circulating liquid pipe. According to the utility model, solar energy is converted into heat energy by utilizing the solar heat collector, and the heat energy is transmitted into the reactor, so that the weathering of the mining and selection solid waste into soil is effectively accelerated, the mineral decomposition and reconstruction are realized, and the resource utilization of the mining and selection solid waste as well as the treatment and ecological utilization of the mining and selection solid waste are realized; the filler pipes are distributed in the reactor, provide accommodating space for the selected solid waste, are uniformly distributed and are matched with the gap areas, so that the selected solid waste and high-temperature liquid are subjected to sufficient heat exchange, and weathering of the selected solid waste into soil is further accelerated.
Owner:KUNMING UNIV OF SCI & TECH

A preparation method for different characteristic mars weathering layer simulation objects

ActiveCN121595279BChemical elementSecondary mineral
The present application relates to a kind of preparation methods for different characteristic Mars weathered layer simulation object, comprising: obtaining the chemical element information of real Mars weathered layer, selecting the brown red volcanic rock with approximate chemical characteristics as raw material and drying;The dry raw material is pulverized, classified and screened, and a plurality of particle size components are obtained;Design different types of target particle size grading, to simulate the typical mechanical properties of different regions on the surface of Mars, each grading can be used as dry state regolith sample.Add water or salt solution to dry state regolith sample, and form frozen sample by low temperature, to simulate high latitude or shallow ice frozen environment on Mars.In addition, secondary mineral powder can also be added to simulate the surface environment of Mars after acidification or salinization weathering, to realize more complex chemical characteristics demand.The present application is simple in process, suitable for mass production, and the simulation object and Mars weathered layer have good correspondence in chemical composition, physical and mechanical properties, and simulation regolith can be produced to cope with various working conditions.
Owner:TONGJI UNIV

Coal-based solid waste resource utilization whole-process intelligent management and control platform and digital twin system

The application relates to the technical field of process data analysis and processing, and discloses a coal-based solid waste resourceization full-process intelligent management and control platform and a digital twin system. The platform comprises: an identification module, which identifies the mineral phase of coal-based solid waste through a ray diffractometer to obtain mineral composition classification data; a construction module, which constructs a digital twin model based on the classification data, simulates a dissolution reaction, and obtains weathering and soil formation process data; an establishment module, which establishes a pollutant migration prediction model according to the process data to obtain environmental risk data; an optimization module, which optimizes the risk data through an improved particle swarm-genetic hybrid algorithm to obtain a resourceization path scheme; and an adjustment module, which adjusts process parameters based on the path scheme to obtain full-process management and control instructions. The application solves the problems of lacking accurate mineral phase identification and intelligent classification in the process of coal-based solid waste resourceization, and failing to construct a dynamic prediction model and simulate a weathering and soil formation process in real time based on mineral composition data.
Owner:GUIZHOU INST OF COAL SCI

Method and device for determining the degree of chemical weathering of a provenance area

The application provides a method and device for determining the chemical weathering degree of a provenance area, wherein the method for determining the chemical weathering degree of the provenance area comprises the following steps: obtaining at least one initial argillaceous rock sample of a target provenance area; for any one initial argillaceous rock sample, judging whether the initial argillaceous rock sample has experienced re-cycling in the case that the composition variation index ICV of the initial argillaceous rock sample is less than a set threshold value; determining the initial argillaceous rock sample which has not experienced re-cycling as a target argillaceous rock sample; calculating the chemical alteration index CIA of each target argillaceous rock sample, and determining the chemical weathering degree of the target provenance area according to each chemical alteration index CIA. The application can exclude the influence of sedimentary differentiation, select the initial argillaceous rock sample which has a composition variation index ICV less than a set threshold value and has not experienced re-cycling, exclude the influence of re-cycling, and further improve the accuracy of CIA, so that the chemical weathering degree is more accurate and has higher reliability.
Owner:GENERAL PROSPECTING INSTITUTE OF CHINA NATIONAL ADMINISTRATION OF COAL GEOLOGY

Carbon capture and storage system with an abiotic center for enhanced mineral weathering

A managed and controlled system for capturing and stably storing carbon from a carbon dioxide source is provided with a reaction chamber configured for receiving and carrying out an enhanced mineral weathering process using a carbon-reactive mineral-containing input, a water-based input, and a carbon dioxide-containing input to form a reaction medium. The mineral-containing and carbon-dioxide-containing inputs are engineered to have selected compositions, and the carbon dioxide-containing input is mixed with the water-based input before being delivered into the reaction chamber using one or more means to optimize reaction kinetics. Additional auxiliary subsystems are provided to process and engineer the system inputs, process the system outputs for safe disposal and optionally, reclaim valuable technology metals from reaction chamber outflows containing (by)products of the enhanced mineral weathering process.
Owner:CYTOCHROME TECHNOLOGIES INC +1

A deep domain imaging surface implementation method, system, device and storage medium

PendingCN122283913AAvoid the problem of low speed and difficult modelingImplement depthComputational scienceComputational physics
This application provides a method, system, device, and storage medium for realizing a depth-domain imaging surface. The method includes applying a total correction to preprocessed time-domain data to correct a fixed surface, obtaining a final reference surface; secondly, using the travel time information of the first arrival wave of an earthquake to invert the near-surface velocity structure, extracting the velocity and thickness of the weathering layer from the tomographic static correction, and calculating the time correction. This invention, through time-domain tomographic static correction, corrects the weathering layer data to the water table, effectively avoiding the difficulty of near-surface velocity modeling. It quickly and effectively achieves depth-domain modeling and imaging. By utilizing the concept of time-domain static correction, seismic data is corrected to the water table, thus avoiding near-surface velocity modeling and directly starting mid-to-deep modeling from the water table. This shortens the processing cycle and improves velocity accuracy, which is beneficial for seismic imaging.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

A method for detecting the weathering degree of red sandstone for building under wet-dry cycles

This invention belongs to the field of testing technology and relates to a method for detecting the degree of weathering of red sandstone used in construction under wet-dry cycles. The method includes: taking freshly prepared thin red sandstone sheets and blocks as specific reference samples 1 and 2, recording the thickness, and measuring the initial ultrasonic velocity; subjecting the freshly prepared thin red sandstone sheets and blocks to unidirectional wet-dry cycle erosion under a simulated wet-dry cycle environment, repeating this process multiple times until the thin red sandstone sheets are completely weathered, and measuring the ultrasonic velocity value each time; constructing a relationship equation between the weathering depth and the thickness of the freshly prepared thin red sandstone sheets and blocks, the initial ultrasonic velocity, and the ultrasonic velocity during the cycle; and performing data fitting to obtain the relationship between ultrasonic velocity and weathering depth, as well as the relationship between ultrasonic velocity and the propagation time of ultrasonic waves in the red sandstone. This method can intuitively obtain the relationship between the degree of weathering of the tested red sandstone from the surface and its depth, and can achieve non-destructive testing.
Owner:CCCC QILI ANCIENT TOWN (GANZHOU) CULTURAL TOURISM CO LTD +1

Method and system for determining shear strength parameter reduction relationship in slope stability evaluation

This invention discloses a method and system for determining the reduction relationship of shear strength parameters in slope stability evaluation, belonging to the technical field of slope stability evaluation. It solves the problem of poor application effect caused by the use of proportional reduction in existing strength reduction methods. The method includes: S1, acquiring geological survey data of the slope area to be analyzed, and classifying the slope soil and rock mass into multiple weathering grades according to the degree of weathering based on the geological survey data; S2, acquiring multiple shear strength parameters of the soil and rock mass for each weathering grade, and calculating the numerical ratio of the same shear strength parameter between two adjacent weathering grades, denoted as the adjacent grade reduction ratio; S3, determining the final reduction relationship between different shear strength parameters based on the adjacent grade reduction ratios of different shear strength parameters. This invention is used for slope stability evaluation.
Owner:NORTHWEST ENGINEERING CORPORATION LIMITED

Dam foundation rock mass mechanical parameter analysis and evaluation method

The invention provides a dam foundation rock mass mechanical parameter analysis and evaluation method, which comprises the following steps of: investigating trunk fractures on two banks of a dam foundation to obtain spatial distribution characteristics of the trunk fractures; field fault mud sampling is conducted on adits on the two banks of the dam foundation, the fault stress state corresponding to the fault mud is equivalently simulated in a laboratory, and preliminary calculation simulation is conducted on rock mass mechanical parameters of the two banks of the current dam foundation in combination with the typical fault valley stress state; according to the preliminary calculation simulation of the mechanical parameters of the two banks of the dam foundation, the rock mass structure and the weathering degree, performing segmented evaluation on the rock mass magnitude levels of the two banks of the dam foundation; dividing the adit rock grades of different exploration lines, evaluating the deformation modulus and strength parameters of rock masses on the two banks of the dam foundation according to the adit rock grades of different exploration lines, and reversely deducing the riverbed foundation surface position and riverbed rock mass mechanical parameters of the dam. The problem that exploration work cannot be carried out by entering a river is solved by carrying out reverse inference on the rock mass mechanical parameters of the river bed infrastructure surface of the dam.
Owner:HUANENG LANCANG RIVER HYDROPOWER CO LTD +1

A portable drill sampler for extraterrestrial weathering layer and a sampling method thereof

The present application relates to a deep space exploration sampler, in particular to an extraterrestrial body weathering layer portable drilling sampler and a sampling method thereof. The sampler comprises an operating handle, a sealed shell, a direct current power supply, a power transmission mechanism, an impact mechanism and a drilling mechanism. The operating handle is installed on the outer top end of the sealed shell. The direct current power supply and the power transmission mechanism are arranged inside the sealed shell. The direct current power supply is used to power the power transmission mechanism. The impact mechanism is arranged on the outer side of the bottom of the sealed shell and connected with the power transmission mechanism at one end. The other end of the impact mechanism is connected with the drilling mechanism. The power transmission mechanism drives the impact mechanism and the drilling mechanism to rotate. The impact module is used to hammer the drilling mechanism. The extraterrestrial body weathering layer drilling sampling is realized through the cooperation of the impact mechanism and the drilling mechanism. The present application has the advantages of compact structure, small volume, convenient carrying, automatic and continuous drilling under the assistance of astronaut operation and assembly, and realization of the extraterrestrial body weathering layer drilling and sampling functions.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI

A method of modelling a wind oxidation zone of an open pit mine

The present application relates to a kind of open pit wind oxidation area modeling method, the purpose is to solve the problem of wind oxidation area in mining area, no coal area, and local coal seam wind oxidation, guide mining design, reduce invalid stripping and other technical problems, technical scheme is as follows: it includes the following steps: define database structure, establish geological database, determine weathering interface and oxidation interface and virtually a weathering oxidation surface, establish weathering oxidation surface model and coal seam surface model, weathering oxidation surface model and coal seam surface model carry out Boolean mathematical operation, draw coal seam thickness contour line;The present application can reasonably control the coal seam thickness contour line with mining value by constructing the method of virtual weathering oxidation interface, reduce the invalid stripping of wind oxidation area in mining area, save production cost, improve economic benefit.
Owner:CHINACOAL PINGSHUO GRP

Weather resistance evaluation method of cable material in stress state, application of weather resistance evaluation method and clamp

The invention provides a weather resistance evaluation method of a cable material in a stress state, application of the weather resistance evaluation method and a clamp. The weather resistance evaluation method comprises the following steps: (1) calculating the stretch rate of an outer sheath of a cable; (2) preparing an outer sheath material to be tested into a dumbbell-shaped test piece; (3) the dumbbell-shaped test piece is placed in a clamp, the dumbbell-shaped test piece is stretched, and the stretching rate is P; (4) dividing the dumbbell-shaped test pieces into three groups, placing one group in a dry and dark place, placing the other two groups in an ultraviolet weather-proof test box, and carrying out an artificial accelerated aging test; (5) taking out one group of dumbbell-shaped test pieces placed in the ultraviolet light weather-proof test box after T1 time, and taking out the other group of dumbbell-shaped test pieces placed in the ultraviolet light weather-proof test box after T2 time; and (6) respectively carrying out performance test on the three groups of dumbbell-shaped test pieces. By adopting the evaluation method provided by the invention, the risk of misjudgment on the material can be greatly reduced.
Owner:JIANGSUSNGSHANG CABLE GROUP +1