191 results about "Geological section" patented technology

The invention provides a BIM (Building Information Modeling)-based rail transit construction geological exploration profile generation method, which belongs to the technical field of exploration measurement and comprises the step of comprehensively improving the accuracy of rail transit construction geological exploration through an advanced data acquisition and intelligent analysis method. In a construction site, multi-dimensional data of geological drilling, geological radar, geophysical prospecting testing and the like are acquired through various precise instruments, and a three-dimensional coordinate system is firstly established; and deep feature extraction is performed on complex data by using a deep learning algorithm, and key information such as geological stratification, rock and soil parameters and underground water level is accurately obtained. Intelligent fusion of multi-source data is realized by constructing a geological stratification model, a rock and soil parameter model and an underground water level model, and a comprehensive geological information model is generated. And importing the extracted geological profile data into a BIM platform, and carrying out strict precision verification and optimization by adopting a professional geological information collaborative equation set to finally form a highly accurate and reliable rail transit construction geological exploration profile.

The invention relates to the technical field of water pollution traceability, and discloses an underground water pollution traceability system based on simulation data, and the system comprises a data collection module which collects real-time data of an underground water monitoring well, soil sampling points and underground water monitoring equipment, and forms a multi-source heterogeneous database; the three-dimensional modeling module is used for constructing a layered geologic body three-dimensional model based on the drilling data, the geological section and the remote sensing image; and the numerical simulation module is used for solving an underground water seepage equation and a pollutant migration equation by adopting a finite difference method of GPU parallel acceleration on the basis of the constructed layered geologic body three-dimensional model. Multi-source monitoring data are accessed in real time through the data acquisition module, online dynamic calculation of an underground water flow field and pollutant migration is achieved in combination with the GPU accelerated numerical simulation module, and the efficiency is effectively improved compared with traditional offline analysis.

The invention discloses an earth geology physical three-dimensional modeling method based on multi-data fusion, which comprises the following steps: A, data acquisition: acquiring geological data through geological exploration and measurement technologies, comprising geological profile, underground water level, lithology, structure, surface digital elevation model (DEM) data, remote sensing image data, surface geographic information data, drilling data, geological plane data, profile data, stratum isoline data, fault data, geophysical prospecting data, dynamic data and related document data. According to the invention, data of geological profile, underground water level, lithology, structure, earth surface digital elevation model (DEM) data, remote sensing image data, earth surface geographic information data, drilling data, geological plane data, profile data, stratum isoline data, fault data, geophysical prospecting data, dynamic data and related document data are collected. And the data can be effectively integrated.

The invention discloses a high cut slope stability evaluation method based on multi-source data fusion, and particularly relates to the technical field of data analysis. By integrating topographic data, geological exploration data, remote sensing images, monitoring sensor data and geophysical detection data, an inversion algorithm is adopted to automatically extract abnormal structure features such as shear wave velocity sudden change and resistivity valley, the abnormal structure features and geological profiles are subjected to cross validation to generate an underground structure risk map layer, and a fusion model is combined with machine learning and a mechanical algorithm to obtain an underground structure risk map layer. According to the method, slope stability indexes including the safety coefficient and the sliding probability are comprehensively output, intelligent identification and grading of potential sliding dangerous areas are achieved, finally, an evaluation result is visually displayed in a three-dimensional GIS platform in a layer superposition mode, the identification precision and evaluation scientificity of slope hidden risks are remarkably improved, and the method is suitable for popularization and application. And a more reliable decision basis is provided for early warning and disposal of a high-risk slope.

The invention discloses a discrete element-based three-dimensional fault / fracture network modeling method and device under a backlash pushing and covering system, and relates to the technical field of three-dimensional fault modeling, and the method comprises the steps: building an initialized fault plane model based on the seismic logging information parameters of a target region; extracting stratum parameters of the target area, and determining a deformation process in combination with an equilibrium profile recovery method; the method comprises the following steps: calibrating mesoscopic parameters of discrete elements according to stratum parameters, depositing a first discrete element model, optimizing and generating a second discrete element model, setting boundary conditions to carry out back-flushing pushing-covering simulation, comparing an output result of the second discrete element model with an actual geological section, adjusting model parameters until the output result and the actual geological section are matched, and establishing a three-dimensional fault and fracture network. And analyzing and establishing spatial distribution characteristics of the target area, and carrying out dynamic evaluation and trend prediction on the activity of the three-dimensional fault. According to the method, the geomechanical model is fused, the subjectivity of manual interpretation is overcome, and the problems of fault tip extension and the like in grid reconstruction are effectively avoided.

The invention belongs to the field of geotechnical engineering and engineering geological information modeling, and relates to a stratum-parameter coupling randomness three-dimensional random field modeling and shield construction ground surface settlement rapid prediction method and device based on multi-source data fusion. According to the method, a three-dimensional joint random field acting on stratum types and rock-soil key physical property parameters at the same time can be constructed under the joint constraint of multi-source data such as drilling, geophysical prospecting, geotechnical tests and terrains, and a calibrated, explainable and updatable geological section automatic generation and uncertainty quantification channel is formed; on the premise that geological rationality is guaranteed, section geometry and parameter distribution under the conditions of complex structures and lateral phase change are restored robustly, the accuracy, consistency and interpretability of the three-dimensional geological section are remarkably improved, and a combined uncertainty result which can be directly used for rapid prediction and risk assessment of shield construction settlement is output. The technical problems that a geological section generated by an existing method is not accurate enough, uncertainty is difficult to quantify, and the extrapolation capacity of a complex scene is weak are solved.

The invention provides an urban groundwater inrush risk assessment method based on a three-dimensional grid model and an XGBoost algorithm, and belongs to the technical field of geological disaster early warning. The method comprises the following steps: acquiring geological, environmental and historical disaster data in real time through a multi-source heterogeneous data interface; constructing a heterogeneous grid unit based on three-dimensional geological modeling, and dynamically binding parameters such as underground water level, fault activity and lithologic permeability coefficient; an XGBoost algorithm is combined with second-order Taylor expansion to optimize gradient calculation, and a nonlinear risk assessment model is constructed through Bayesian hyper-parameter tuning and SHAP value feature interpretive analysis; identifying contiguous dangerous areas based on spatial autocorrelation analysis and an adaptive threshold segmentation algorithm; and a risk thermodynamic diagram, geological section superposition and real-time early warning are realized through a 3D GIS platform. According to the method, the problems that a traditional method depends on a linear model, data is single and local risk description is insufficient are solved, and the accuracy, efficiency and engineering practicability of risk assessment are remarkably improved.

The invention discloses a surrounding rock dynamic response calculation and evaluation method under hard rock tunnel blasting excavation. The calculation method comprises the following steps: S1, obtaining tunnel design data and geological section information; s2, acquiring physical and mechanical parameters; s3, blasting parameters are obtained; s4, constructing a three-dimensional hard rock tunnel blasting excavation grid model according to the tunnel design data and the geological section information obtained in the step S1; s5, importing the three-dimensional tunnel blasting excavation grid model, blasting parameters and physical and mechanical parameters into finite difference software; s6, analyzing and calculating the three-dimensional tunnel blasting excavation grid model through a dynamic calculation module built in finite difference software to obtain surrounding rock dynamic response data under blasting excavation; and S7, comparing and analyzing the dynamic response data of the surrounding rock under blasting excavation with a safety evaluation threshold value. According to the method, the comprehensiveness and the accuracy of tunnel surrounding rock dynamic response evaluation under blasting excavation are improved aiming at the defects of an existing method and actual application requirements.

The invention relates to a carbon dioxide salt water layer geological storage site selection method and system, and belongs to the technical field of carbon dioxide energy conservation and emission reduction. The site selection method comprises the following steps: acquiring logging data and a geological data set of a target area, and identifying a potential salt water interval based on a preset rule; grading quantitative evaluation is carried out according to the identified potential salt water interval, and a corresponding evaluation index system is established; wherein the evaluation index system comprises a plurality of first-level evaluation indexes and a plurality of second-level evaluation indexes corresponding to each first-level evaluation index, and the first-level evaluation indexes comprise geological sequestration condition evaluation, sequestration capability condition evaluation and social environment condition evaluation; carrying out weight assignment on the evaluation indexes in the evaluation index system based on an index weight assignment method, and carrying out comprehensive quantitative evaluation to obtain a comprehensive evaluation score of each candidate target region; and taking the candidate target region with the highest comprehensive evaluation score as a storage site for geological storage of the carbon dioxide saline water layer. According to the invention, the scientificity and reliability of storage site selection can be improved.

The invention relates to the technical field of geological image processing, and particularly discloses a three-dimensional modeling method for a geological section, which is used for solving the problem of how to accurately identify and hide irrelevant geological areas and improve the modeling efficiency in geological three-dimensional modeling. Comprising the steps of data acquisition and preprocessing, geologic model constraint, implicit modeling and machine learning optimization, three-dimensional modeling and graphic rendering optimization, model correction and optimization and dynamic interaction and analysis, and four analysis formulas based on hidden requirements are provided; according to the method, by setting the hiding demand judgment formula for the coal seam, the rock stratum, the mined area and the inactive fault, the geological area irrelevant to target research is screened, the geological three-dimensional modeling process is optimized, the accuracy and efficiency of the model are improved, interference of irrelevant data is reduced, and the method has good application prospects. It is ensured that the mineral resource evaluation result better conforms to the actual geological condition, and the precision and credibility of mineral resource prediction are effectively improved.

The invention provides an unfavorable geological section treatment structure of an underground high-pressure gas storage and a design method of the unfavorable geological section treatment structure. The treatment structure comprises replacement concrete arranged between a weak structural layer and backfill concrete. The section of the replacement concrete in the radial direction of the gas storage is an isosceles trapezoid, the upper bottom edge of the isosceles trapezoid is connected with the weak structure layer, the lower bottom edge of the isosceles trapezoid is connected with the backfill concrete, the two waist edges of the isosceles trapezoid are connected with the surrounding rocks on the two sides of the replacement concrete respectively, and the length L3 of the upper bottom edge is smaller than the length L1 of the lower bottom edge. The treatment structure can prevent the safety problem of the gas storage caused by the characteristics of low strength, easy deformation and the like of the weak structural layer.

The invention discloses a three-dimensional conversion method for a two-dimensional geological profile map, and the method comprises the steps: S100, data obtaining and preprocessing: obtaining an original geological profile map, carrying out the format conversion of the original geological profile map, eliminating overlapped line segments and micro short line segments, and maintaining the topological consistency; s200, conversion parameter calculation is conducted, specifically, drilling coordinates are obtained, and a conversion script is compiled based on the real geodetic coordinates, the two-dimensional profile map coordinates and the azimuth angle; and S300, conversion execution: reading the map subjected to format conversion in the S100 into three-dimensional modeling software, and executing the script language compiled in the S200 to obtain a three-dimensional geological profile map. According to the method, the whole file is converted, the conversion from the two-dimensional geological prospecting line section to the three-dimensional geological section map can be rapidly and integrally completed through the existing software technology and simple script codes so as to be used for three-dimensional geological modeling, a large amount of manpower and material resources can be effectively saved, and the production efficiency can be improved.

The invention discloses a three-dimensional fine geological modeling method for conventional and unconventional oil and gas reservoirs, which comprises the following steps of: firstly, performing multi-source data integrated management: integrating heterogeneous data such as drilling data (lithology and logging curves), a geological profile map, seismic exploration data (seismic waves and induced polarization), construction dynamic data (tunnel face sketches and laser point clouds) and the like; unified storage and dynamic calling are realized; by integrating multi-source data of earthquake, logging, geochemistry and the like, a high-precision three-dimensional model is established, such as a drilling data regularization processing algorithm and a point cloud hole filling algorithm, the problems of inconsistent data formats and space missing are effectively solved, and the geometric precision and topological integrity of the model are improved. Therefore, the problems of difficulty in multi-source heterogeneous data fusion and insufficient model precision in existing oil and gas reservoir three-dimensional geological modeling are solved; through the multi-dimensional data fusion and intelligent modeling technology, the precision of the three-dimensional geologic model of conventional and unconventional oil and gas reservoir development is improved.

The invention provides a three-dimensional surface matrix modeling method based on multi-source data, and the method comprises the steps: calculating a preset interval based on geological profile data, drilling density, terrain curvature and other information, and extracting and estimating virtual drilling data in an area with insufficient original drilling data; the generation of the virtual drill hole effectively fills up the data blank, enriches the drill hole data set, enables the model construction to more comprehensively and accurately reflect the stratum characteristics, and greatly improves the data integrity and the adaptability of the model to the complex geological area. The accuracy of the model is dynamically judged by setting a standard deviation threshold value, and when the standard deviation of the error matrix exceeds the threshold value, the optimization process of the model is triggered, including T IN grid reconstruction and GNN parameter updating; the self-adaptive optimization mechanism can enable the model to be continuously adjusted to adapt to the characteristics of actual geological data, and the precision and reliability of the model are improved.

The invention discloses a TBM construction tunnel unfavorable geological tunnel section ground pre-reinforcement method which comprises the following steps: S1, a tunnel surrounding rock category map is compiled, and surrounding rock categories and stake numbers are marked on the map; s2, the surrounding rock confirmed to be in the V type is rechecked as a target reinforcing area; s3, directional grouting drill hole arrangement; s4, drilling design is conducted in combination with the tunnel excavation design drawing and the drilling task book; s5, drilling equipment is selected; s6, drilling equipment is installed; s7, designing and installing a grouting system; s8, drilling an orifice section; s9, drilling a vertical section; s10, drilling in a deflecting section; s11, horizontal grouting section drilling is carried out; s12, horizontal section bare hole grouting is conducted; s13, lowering a floral tube; s14, grouting the floral tube; s15, the grouting effect is checked; and S16, hole sealing is conducted. Advanced reinforcement grouting is conducted on the tunnel surrounding rock on the earth surface through drilling, the physical and mechanical parameters of the tunnel surrounding rock are improved, the risk of engineering geological problems during tunnel excavation is reduced, and the tunnel construction efficiency is improved.

The invention discloses a geological profile map processing method based on cross-hole CT and drilling information multi-dimensional cooperation, and relates to the technical field of intelligent processing of engineering geological image achievements. Cross-hole CT data can provide continuous distribution information of rock-soil bodies among drill holes, and lithology distribution can be depicted more finely in combination with drilling data; the advantage that cross-hole CT can detect and recognize inter-hole rock-soil body structures is combined with the advantage that drilling can obtain different-depth rock core distribution, the characteristics of the inter-hole rock-soil body structures obtained through the cross-hole CT are combined with artificial intelligence, intelligent correction of engineering geology profile maps with multi-dimensional cooperation of the cross-hole CT and drilling information is achieved, and the engineering geology profile maps with the multi-dimensional cooperation of the cross-hole CT and the drilling information are obtained. The corrected engineering geological profile map is finer and closer to the real situation, and has better reference value for engineering design and engineering decision; the risk of emergencies in the construction process can be reduced through accurate geological information, the requirement for the number of drilled holes can be reduced, and therefore the exploration cost is reduced, and the exploration time is shortened.

The invention belongs to the technical field of three-dimensional geologic modeling, and particularly relates to a three-dimensional modeling method for a structural plane based on strike control and occurrence constraint, which comprises the following steps of: extracting strata, fault strike lines and occurrence data based on a plane geologic map of a modeling target area, and extracting coordinates and azimuth angles of points on the strike lines through a curvature-constrained equal-interval sampling method; generating layer control points in batches by changing the sampling depth in combination with occurrence data; expanding a layer control point set by utilizing a stratum or fault layering point disclosed by a drill hole or a geological section, and further creating an irregular triangulation network of a structural plane; and extracting a structural surface intersection line by adopting a collision detection algorithm, reconstructing a stratum contact relation and a fault network space topological relation, finally obtaining a layer data file of the structural model, and completing data storage and three-dimensional visualization of the model. According to the method, the model of the structural plane such as the stratum and the fault can be quickly established, the spatial topological relation is reconstructed, and data file generation and three-dimensional visualization of the structural model are realized.

The invention discloses a classification method for a bedrock heat storage geothermal field in a broken basin, electronic equipment and a medium. The method comprises the following steps: compiling a geologic section of a trunk of the basin, and identifying a geologic structure type of a geothermal field in the broken basin; establishing a geothermal field geologic model, and compiling an actually measured formation temperature change curve traversing a geothermal field heat storage top surface depth line to obtain a geothermal profile; numerical simulation is carried out on the geothermal field geologic model, and thermophysical parameters are determined; carrying out heat conduction numerical simulation on the geological section of the basin trunk; different geothermal field bed rock heat storage top surface stratum temperatures are determined, and geothermal anomaly is analyzed; and establishing a geothermal field classification system table, making a judgment map, and dividing the type of each geothermal field in the broken basin. According to the method, the tectonic deformation style is introduced into geothermal field type division, so that spatial distribution of heat storage of bedrock of different tectonic zones is distinguished, the heat storage temperature range is effectively predicted, and the quality of geothermal resources and the development prospect of the geothermal resources can be quickly judged.

The invention discloses a manganese ore deposit exploration effect evaluation method and system based on a spread spectrum induced polarization method, and relates to the technical field of deposit exploration. The method comprises the following steps: constructing a three-dimensional geologic model of a mining area, initially arranging an exploration unit and acquiring actual exploration data, inverting the actual exploration data to generate an initial geologic profile map, performing exploration simulation in the three-dimensional geologic model and acquiring simulated exploration data, acquiring a distortion index and a spatial influence degree of the actual exploration data and constructing an exploration correction model; the exploration unit is reset, corrected exploration data are obtained, and inversion is carried out on the corrected exploration data to generate a corrected geological profile map; the effectiveness of various data obtained in the ore deposit exploration process can be improved, the distribution condition of an ore deposit can be better reflected, and then the accuracy of ore deposit exploration is enhanced.

The invention relates to the technical field of geological modeling, and discloses an underground reservoir three-dimensional geological model construction method and system. The method comprises the following steps: screening drilling data through a preset precision threshold value, correcting topographic data by using a first precision drilling data set to generate a topographic surface model, reversely calibrating a second precision drilling hole, and establishing a multivariate data fusion mechanism; layering standardization is achieved in combination with sedimentary cycle characteristics, aquifer units are automatically divided, and stratum lithology codes are compiled; a three-dimensional model is generated by adopting an implicit modeling method based on modeling boundary constraints, and the model precision is verified through a profile comparison method and a leave-one-out method; and converting the adjusted geological section into a three-dimensional constraint surface to drive the generation of a virtual drill hole so as to realize incremental updating of the three-dimensional geological model. According to the method, the spatial precision of the terrain surface model is remarkably improved, the problem of non-uniform reference of multivariate heterogeneous data is solved, the reliability and accuracy of model construction are improved, the virtual drilling data set is generated, the data are dynamically modeled, and the dynamic updating of the model is realized.

The invention relates to the field of shield tunneling and stratum deformation prediction, and provides a double-engine prediction method and system for stratum deformation caused by shield tunneling, and the method comprises the steps: S1, determining an analytical solution model; s2, according to the geological parameters of a certain geological section, the field actual measurement deformation value of the geological section and the analytical solution model, the stratum loss rate of the geological section is obtained; s3, the step S2 is repeated, and the stratum loss rates of the multiple geological sections are obtained; s4, selecting and training a neural network; s5, taking the geological parameters of the to-be-predicted section as input, substituting the geological parameters into the neural network, and outputting the stratum loss rate of the to-be-predicted section; and S6, substituting into the analytical solution model to obtain a stratum deformation prediction value of the to-be-predicted section. The method is clear in theoretical basis, simple in application and low in sample demand quantity, and engineering application can be facilitated on the premise that the prediction precision is met.

The invention provides a method for simulating a complex fault in a three-dimensional geologic model by utilizing spatial analytic geometry. The method comprises the following steps: acquiring fault occurrence information of a site to be researched; deriving a normal vector of the fault in a three-dimensional space according to the obtained fault occurrence information; determining representative origin position coordinates of each layer in the coordinate system of the to-be-simulated region; establishing a three-dimensional geological model according to the two-dimensional geological profile; and according to the normal vector of the fault in the three-dimensional space and the representative origin position coordinates of each layer in the coordinate system of the to-be-simulated region, performing accurate sorting and division on the target fault in the three-dimensional geologic model, thereby realizing consideration of complex fault information in the three-dimensional geologic model. The method can completely reflect on-site real fault distribution characteristics, and is simple and easy to implement and high in modeling efficiency.

The invention relates to the technical field of computer graphics, in particular to a three-dimensional geological section real-time cutting method and system and a storage medium, and the method comprises the steps: constructing a BVH tree to accelerate the cutting of a three-dimensional geological model, and calculating the projection of intersecting line segments on a cutting surface two-dimensional coordinate system to obtain a projection line segment set; constructing an undirected graph structure based on the projection line segment set; and extracting a closed profile contour based on the undirected graph structure, subdividing a triangular grid, and rendering and displaying. The implementation of the scheme can break through the traditional preprocessing dependence, and improve the profile generation efficiency and the visualization integrity.

The invention relates to the technical field of geological modeling, in particular to a geological modeling construction optimization method suitable for surface mine geological disaster exploration. The method comprises the following steps: fully collecting and integrating geological data and geophysical data, determining a reasonable drilling position by using a scientific geological inversion analysis method, constructing an ore body model by combining drilling sampling data, and constructing a geological profile map by using a GIS (Geographic Information System) to obtain accurate contour parameters so as to construct an original geological three-dimensional model. Meanwhile, a Bayesian method is introduced to calculate probability distribution of the stratum surface, and an original model is labeled and compiled to obtain a final high-precision three-dimensional geological model, so that the defects of a traditional method can be effectively overcome, and the accuracy, reliability and scientificity of geological modeling are improved; and more accurate and comprehensive geological information support is provided for prediction, evaluation and prevention of geological disasters of the surface mine.

The invention discloses an autonomous rock-soil body drilling instrument based on the bionic principle and a drilling method thereof.The autonomous rock-soil body drilling instrument comprises a drill bit, a propelling steering mechanism, an anchoring mechanism, an electric control integrated module and a ground control unit, and the drill bit, the propelling steering mechanism and the electric control integrated module are sequentially connected; anchoring mechanisms are arranged between the drill bit and the propelling steering mechanism and between the propelling steering mechanism and the electric control integrated module; the drill bit is used for cutting a rock-soil body and backwards conveying and discharging the cut rock-soil body to the outside of the drill bit; the propulsion steering mechanism is used for driving the drilling instrument to linearly advance and steer; the anchoring mechanism is used for providing counterforce required by drilling or resetting for the drilling instrument through meshing and separation with surrounding rock and soil bodies; and the electric control integrated module is connected with the ground control unit through an integrated communication cable. The device simulates an anchoring-propelling mechanism of natural organisms, realizes autonomous drilling without an external counter-force device, a slurry protection wall and a probe rod, and has the capabilities of multi-directional drilling, active obstacle avoidance and real-time acquisition of a continuous geological section.

The invention discloses a three-dimensional geologic body spatial interpolation system and method, and belongs to the field of three-dimensional geologic body spatial interpolation, and the system comprises a data collection and judgment module, an interpolation calculation module, a modeling analysis module, a drilling geological point recommendation module, a geological data search and supplement module, and a result output module. The data acquisition and judgment module is used for acquiring drilling geological data, geological profile data, topographic data and geological interface data, setting a matching rule and matching an optimal interpolation algorithm combination; according to the method, accurate matching of geological data and an optimal algorithm, effective processing of abnormal data, rapid positioning of an abnormal area and continuous supplement of key geological information are realized, the accuracy and reliability of three-dimensional geologic body spatial interpolation are remarkably improved, and a powerful technical support is provided for geological exploration and research work.

The invention discloses an engineering geological profile map generation method and system, and the method comprises the steps: constructing a profile map data model, and enabling a left boundary, a right boundary, a bottom boundary and a terrain line projection of the profile map data model to form a closed two-dimensional region; acquiring profile data according to the two-dimensional surface domain; performing entity space calculation based on the profile data, the topographic data and the exploration data to obtain an actual three-dimensional shape of a profile line; and performing data calculation based on the actual three-dimensional shape of the section line and the exploration data so as to draw and generate an engineering geological section map. According to the method and the device, unitized segmentation of data of each stratum can be realized, a standardized profile map data model is constructed, and completeness analysis of the stratum data of the profile map is realized; the problems that in engineering geological section drawing, a ground line does not conform to the actual terrain, the stratigraphic curve crossing phenomenon is serious, stratigraphic data cannot be perfectly segmented, and the result stability is poor are solved.

The invention provides a tunnel primary support process for railway engineering, and relates to the technical field of tunnel primary support. The tunnel primary support process of the railway engineering comprises the following steps: immediately carrying out danger elimination work after tunnel excavation, then carrying out primary concrete spraying operation, carrying out mortar anchor rod or hollow anchor rod construction, laying a reinforcing mesh, carrying out steel frame construction, advanced small pipe construction, anchor rod construction and advanced pipe shed construction, immediately carrying out danger elimination after tunnel excavation, and carrying out primary concrete spraying. The rock mass can be quickly closed, relaxation deformation of the rock mass is prevented, early deformation of surrounding rock is effectively controlled, stability of the surrounding rock is enhanced, safety guarantee is provided for follow-up construction, the reinforcing mesh is laid and firmly connected with the anchor rod and the steel frame, the integrity of the supporting structure is further enhanced, and the impact resistance of the supporting structure is improved. Through auxiliary construction measures such as advanced small guide pipes and advanced pipe sheds, surrounding rock is effectively reinforced, the strength and stability of the surrounding rock are improved, the construction risk is reduced, and it is ensured that tunnel construction smoothly passes through unfavorable geological sections.

The invention discloses an ArcGIS-based fault complex structure processing method in geological modeling, which comprises the following steps: collecting related geological data of a research area, laying section lines according to modeling precision and certain density when actual drilling data is lacked, laying virtual drilling points on the section lines, and carrying out modeling on the virtual drilling points; calculating modeling data, including thickness and burial depth, of the underlying stratum of the virtual drill hole through the geological profile map; in combination with geological data and field survey data, finding out basic features of a fault in a modeling area, including a fault angle (alpha) and a stratum thickness (h), and before modeling, arranging a section which has a certain density and passes through the fault according to the step S1; taking the fault plane as a boundary of modeling, and performing independent modeling on geologic bodies on two sides of the fault plane based on ArcGIS; and after the geologic models on the two sides of the fault are built according to the previous steps, the three-dimensional geologic models on the two sides are combined together, so that a complete three-dimensional geologic model capable of reflecting the fault characteristics can be formed.

The invention belongs to the technical field of petroleum and natural gas drilling exploration and development, and discloses a geosteering parameter modeling method suitable for a complex thin layer, which comprises the steps of seismic data collection and geological profile evaluation, geological data analysis and target window feature determination, drilling trajectory guiding model establishment, drilling dynamic tracking, real-time borehole correction and the like. And accurate guiding is realized. Target window control is carried out by combining a layer thickness method and a segmentation method, and a drilling trajectory is monitored in real time by adopting a'five maps and one table 'tracking method, so that efficient passing of a drill bit in a target reservoir is ensured. According to the method, the drilling rate under the narrow target window geological condition is remarkably improved, the drilling risk is reduced, and the development efficiency and economic benefits of the shale gas well are improved.