194 results about "Geological investigation" patented technology

The invention relates to a landslide emergency treatment engineering exploration design method based on remote sensing assistance of a small unmanned aerial vehicle. The method is characterized by comprising the following steps: rapidly acquiring a high-definition picture of a landslide engineering region in field by using a small unmanned aerial vehicle remote sensing system; generating an orthophoto remote sensing result of the landslide engineering region through digital photogrammetry software processing; making a large-scale line global map by using the orthophoto remote sensing result; carrying out indoor visual auxiliary engineering geological investigation based on an orthophoto and a three-dimensional model; programming a visual conventional engineering geological map according to an on-site engineering geological investigation result; carrying out an auxiliary treatment engineering design based on the visual engineering geological map; programming a visual and conventional landslide emergency treatment engineering design plane map.

The invention discloses an interpretation and evaluation method for a reservoir area engineering geological survey and particularly relates to a hierarchy interpretation method and a comprehensive evaluation method for reservoir area engineering geological survey and evaluation. According to the interpretation and evaluation method, the interpretation of bad geologic bodies of landslide, collapse, debris flow and the like can be achieved, the precision can meet a requirement of feasibility, and the comprehensive evaluation of engineering geological problems of reservoir leakage, reservoir bank stability, reservoir bank collapse, reservoir immersion, the debris flow and the like can be achieved. The steps of the interpretation and evaluation method includes firstly, establishing a geographic information system (GIS) data bank of a reservoir area engineering geology and a three-dimensional true color remote-sensing image visualization system; secondly, establishing remote-sensing interpretation marks of the bad geologic bodies of the landslide, the collapse, the debris flow and the like; thirdly, performing preliminary interpretation with geography interpretation as a priority; fourthly, performing outdoor verification by matching of image interpretation; fifthly, performing detailed comprehensive interpretation with three-dimensional interpretation as a priority; sixthly performing reservoir leakage comprehensive interpretation based on a GIS; seventhly, performing reservoir bank stability comprehensive interpretation based on the GIS; eighthly, performing reservoir bank collapse and reservoir immersion comprehensive interpretation based on the GIS; and ninthly, performing reservoir debris flow comprehensive interpretation based on the GIS.

The invention provides a computing method for the representative elementary volume of a jointed rock, which belongs to field of geotechnical engineering calculation parameters. According to the invention, a multi-scale jointed rock sample with an indoor test scale, an on-site in-situ test scale, an engineering scale and the like capable of fully reflecting joint spatial distribution characteristics and rock and joint mechanical characteristics is constructed based on indoor rock and joint mechanical tests and on-site joint geological survey, and virtual uniaxial compression loading is carried out on the sample to obtain a stress-strain curve; a relational graph of uniaxial compressive strength of a variety of jointed rocks and loading-direction sample dimension is drafted, and a relation curve is fitted; in the fitted relation curve, if a ratio of reduction amount of the uniaxial compressive strength to uniaxial compressive strength of an indoor rock sample is less than 0.2% when the loading-direction sample dimension of the jointed rocks is increased by 1 m each time, it is believed that uniaxial compressive strength of the jointed rocks does not change with increase of dimension, and the representative elementary volume of the jointed rocks is obtained. The method provided by the invention has the advantages of simple principles, convenient operation, low cost and a good usage effect and facilitates determination of the representative elementary volume of the jointed rock.

The invention discloses a structural design method for a load-bearing section of a miniature anti-slip compound pile. The method comprises the following steps: 1, performing a field geological survey, and determining mechanical properties of a geotechnical slope body through tests; 2, evaluating the stability of a slope, and calculating the residual slide thrust of the slope; 3, considering the adjustment and the distribution of the slide force among piles of the miniature anti-slip compound pile, and determining the distribution ratio of the slide force under each pile; 4, calculating to obtain the residual slide thrust borne by each pile; 5, calculating the bending moment, the shearing force, corners and the displacement of the load-bearing section of each pile; 6, performing reinforcement design on the miniature anti-slip pile according to the calculated bending moment; and 7, rechecking designed reinforcing bars according to the calculated shearing force. According to the design method, the residual slope slide thrust distribution conditions of each pile of the miniature anti-slip compound pile are determined, the reinforcing function of each pile body in the combined pile consisting of multiple piles is determined, the distribution of the anti-slip effect on each pile is obtained, the structure effect and the pile-soil action effect of the miniature anti-slip compound pile are considered, and the internal force calculation result is accurate and scientific, so that the bending resistance, the shearing resistance and the safety of the miniature anti-slip compound pile are guaranteed.

The invention discloses a hyperspectral image space-spectral domain classification method based on mean value drifting and group sparse coding and mainly solves the problems that a hyperspectral image is low in classification accuracy and poor in robustness in the conventional method. The method is implemented by the steps of: inputting a hyperspectral image, and representing hyperspectral samples by feature vectors; randomly selecting marked samples in the hyperspectral samples, and carrying out over-segmentation on the hyperspectral image; grouping the hyperspectral samples according to the segmentation result of the hyperspectral image; carrying out sparse coding on the hyperspectral samples by utilizing the group sparse coding; constructing a sample set by utilizing the hyperspectral samples and sparse coding coefficients of the hyperspectral samples; and carrying out classification on the hyperspectral samples by utilizing a support vector machine and the constructed sample set. According to the hyperspectral image space-spectral domain classification method based on the mean value drifting and the group sparse coding, the sparse characteristics and space-domain contextual information of the hyperspectral image are adequately utilized, the relatively high classification accuracy can be obtained, and the method can be applied to the fields of precision agriculture, geological investigation, survey and military reconnaissance and the like.

The invention discloses a surrounding rock deformation early-warning construction method for small-diameter tunnel full-section excavation. The surrounding rock deformation early-warning construction method for small-diameter tunnel full-section excavation comprises the following steps of (1) carrying out the earlier-stage geological survey and rock core sampling, finding out the position and the trend of a joint fissure of the terrane, determining parameters of surrounding rock through soil tests, classifying the surrounding rock and summarizing the types of the surrounding rock to form a list, and determining the design of the multipoint displacement meter installation scheme according to the results of the geological survey; (2) carrying out tunnel excavation and installation of multipoint displacement meters; (3) carrying out the middle-stage geological survey; (4) recording the installation time of the multipoint displacement meters; (5) determining a surrounding rock deformation early-warning value; (6) carrying out observation recording on data of the multipoint displacement meters, and determining remediation treatment measures of the dangerous section.

The invention relates to field of engineering geological exploration analysis and discloses a rock block stability fast evaluation method based on a three-dimensional outdoor scene and stereographic projection. According to the rock block stability fast evaluation method based on the three-dimensional outdoor scene and the stereographic projection, geological investigation personnel versatilely analyze blocks likely to slip conveniently and rapidly in the field environment, visually make an evaluation for a side slope stability state, and qualitatively analyze the stability situation after personnel excavate the side slope at the same time. The method comprises the steps of 1, collecting rock mass structure geological data information in an engineering area; 2, introducing the geological data information to a three-dimensional outdoor scene platform to form three-dimensional terrain; 3, determining a natural rock side slope to be analyzed; 4, in the range of the natural side slope, screening out all structural plane data information; 5, cutting blocks in the three-dimensional outdoor scene platform; 6, generating a side slope stability analysis report according to a polar stereographic projection method; 7, according to a construction scheme, inputting artificial side slope data; 8, according to the polar stereographic projection method, natural side slope data and artificial side slope data, generating a stability report.

The invention discloses a comprehensive survey method for a large-span shallow-buried limestone goaf, and relates to the technical field of underground mining. The method comprises the following stepsof data acquisition, geological investigation and mapping at the survey area, special investigation of the survey area, and geophysical prospecting, engineering drilling, geomechanical simulation test, establishment of a geological survey BIM model, preparation of survey results report and data collation and archiving in goaf. The comprehensive survey method provided by the invention has the beneficial effects of solving the problem of low survey accuracy of the large-span shallow-buried limestone in urban dense areas, having safe and reliable operation, and providing relatively accurate first-hand information for the suitability evaluation of the design and management of similar projects, land use and urban underground space utilization.

The invention relates to the structural plane measuring technique in the engineering geological investigation field and discloses a structural plane measuring method based on the three-dimensional laser scanning technique. The structural plane measuring method solves the problems that working time is long and efficiency is low in rock mass structural plane measuring modes in the prior art. Investigation window rock mass surface laser-point clouds are obtained through the three-dimensional laser scanning technique, rock mass surface true color digital photos are obtained through a digital camera, structural planes are recognized through the three-dimensional laser-point clouds and the true color digital photos, the occurrence of the structural planes is worked out, the exposing lines of the structural planes are generated, and the length and persistence ratio of the structural planes and the distance between the structural planes and the like are measured. The method is suitable for rock mass structural plane measuring.

The invention provides a method for processing a large-scale underground goaf. The method comprises the following steps that: 1, an ultra-deep hole is drilled in a discovered goaf top plate, and the form of a goaf is known in detail through laser three-dimensional scanning; 2, through on-the-spot engineering geological investigation in a mining district and the ore rock mechanical parameter tests, the stability of various kinds of rock bodies is studied, and the safety technical parameters of an open pit mine side slope safety layer under different goaf distribution conditions and rock layer conditions are determined; and 3, for the thicker top plate, layered one-step processing is adopted, and the lower part layer collapses earlier than the upper part layer. Fifteen goafs are processed from the application to the Yuanjia village iron mine of the Tisco (Group) Lan County Mining Company, the processing effect is good, and the potential safety hazards are eliminated. The method has greater guidance significance on the open pit metal mine goaf processing, particularly the goaf processing with the thicker top plate, and the method is worthy of being popularized and applied.

The invention relates to an engineering geology informatization work system which comprises an engineering geological data acquisition module, a database, a field process platform system, a geological information data management system, a three-dimensional geological modeling system and an engineering geology drafting system. The database is used for storing geological data acquired by the engineering geological data acquisition module. The field process platform system is used for field geological survey work and drafting of a material graph. The geological information data management system is used for the management and application of the geological data in the database. The three-dimensional geological modeling system is used for generating a geological body three-dimensional model according to the geological data acquired by the engineering geological data acquisition module. The engineering geology drafting system is used for generating a standard geological map meeting the requirements of various regulations and norms according to the geological data with a topographic map and an orthophoto map as the background. The engineering geology informatization work system provides a complete solution for engineering geological investigation work, and the functions of the informatization work system can be expanded. By the application of the system, revolutionary change can be brought to the engineering geological investigation work, and the efficiency of the engineering geological investigation work is greatly improved.

The invention discloses an ultra-shallow three-dimensional seismic reflection wave exploration method. The method comprises the following steps of: designing ultra-shallow three-dimensional seismic acquisition arrangement pieces; arranging a wave detector according to the design; exciting seismic waves by hammering a seismic source; sequentially rolling the three-dimensional seismic arrangement pieces along a longitudinal direction and a horizontal direction at intervals of 4 meters to complete the acquisition of three-dimensional seismic data; performing band-pass filtering, two-dimensional frequency space filtering and stacking on the acquired seismic data, and thus obtaining an ultra-shallow three-dimensional seismic reflection wave stacked data body, wherein a plane distribution rangeand the three-dimensional configuration of an underground detection target can be displayed according to the ultra-shallow three-dimensional seismic reflection wave data body. By the method, the problem of three-dimensional exploration of the ultra-shallow detection target in the field of engineering geological investigation is solved, the plane distribution condition and the three-dimensional configuration of the detection target can be clearly seen according to exploration results, and the detection capability of seismic exploration in the field of engineering investigation is improved.

The invention discloses a BIM-based geotechnical engineering comprehensive investigation information interpretation method, which realizes three-dimensional interpretation of comprehensive investigation results based on a BIM technology and performs three-dimensional visual integration on the investigation results. According to the technical scheme, the method comprises the steps of establishing aunified project database, and storing data; calling in terrain CAD data; carrying out automatic interpretation on the data to obtain interpretation information; carrying out three-dimensional interpretation on the field geological survey data; performing three-dimensional interpretation according to the high-density electrical survey lines, and establishing interval stratum segmented three-dimensional interpretation multi-line segments; setting a reflection coefficient value according to a seismic wave method, and establishing an inversion three-dimensional contour surface; reading drilling data, and establishing a three-dimensional drilling model according to stratum attributes; establishing an investigation result comprehensive model according to the interpretation information, and carrying out weight assignment and three-dimensional geological curved surface interpolation fitting; and establishing a geologic body according to the topographic surface, and performing Boolean operation on the geologic curved surface to obtain a layered and blocked geologic body.

The invention discloses a construction method of advanced geological forecast, which belongs to the technical field of geological forecast. The construction method comprises the steps of conducting tunnel engineering geological investigation; completing on-site data collection; establishing a wave velocity model; obtaining chromatography scanning image; conducting the analysis of tunnel engineering underground water advanced forecast, the analysis of tunnel engineering empty cavity advanced forecast, the analysis of tunnel engineering fault fracture zone advanced forecast, and the analysis of tunnel engineering surrounding rocks classification advanced forecast. The construction method of the invention is advantageous in that before data collection and data processing, the engineering geological condition of the tunnel can be basically grasped; the data processing should be objectives-oriented, and then the advanced geological forecast can be accurately conducted; the primary engineering geological problems of the tunnel and the influence of the problems to the tunnel can be estimated, and thereby suggestions of how to deal with the problems can be made in the manner of being geared to engineering practice; the technical advantages of TRT can be fully developed, and the construction progress and safety can be well guaranteed.

The invention relates to a ground subsidence control constructing method. The method comprises the following steps of detecting the geohydrologic engineering geological condition of a subsidence area of the ground to be constructed; according to a log-log method, determining yield stress of each ground layer of the subsidence area of the ground to be constructed and a critical water level corresponding to the yield stress; arranging a plurality of monitoring networks in the subsidence area of the ground to be constructed to monitor the water levels; adjusting the exploitation and recharge of the underground fluid according to the monitored water levels. The invention determines the structural characteristic of the ground layer according to the geological investigation method, controls the water levels not to be reduced below the critical water level, and then controls the exploitation amount of the underground fluid and timely adjusts the time of exploitation and recharge, so the ground subsidence is effectively controlled.

The invention relates to a fuzzy comprehensive evaluation method of a geological strength index, and the method is characterized in that a rock joint group number, a joint interval and a rock completeness coefficient are used for describing rock structural characteristics, a large proportional scale waveform coefficient, a small proportional scale smooth coefficient and a joint erosion coefficient are used for describing conditions of a structural plane, and a fuzzy comprehensive evaluation set is established according to the fuzziness, hierarchy and difference of the evaluation index influencing the geological strength index value; a membership function of rock material characteristics is constructed, and the weight of the evaluation factor is determined on the basis of the layering analysis method; and finally a rock structural characteristic and structural plane condition factor evaluation matrix is established according to the geological exploration result and the test data, and the value of the geological strength index is determined according to the maximal subordinate principle. The comprehensive evaluation method is strong in pertinence, high in accuracy, capable of reasonably combining the geological investigation result, the test result, statistical data and expert opinions, capable of reducing the subjectivity in decision-making of a researcher and easy to realize.

The invention discloses a portable measuring device with adjustable depth for geotechnical geological investigation. The portable measuring device comprises a bottom plate, wherein a through hole is formed in the middle of the bottom plate; a drilling sampling device is arranged above the through hole; the drilling sampling device comprises a first rotating shaft; a drill bit is arranged below thefirst rotating shaft; a plurality of connecting drill rods are arranged between the drill bit and the first rotating shaft; first flanges are arranged at two ends of the connecting drill rods; the connecting drill rods are correspondingly connected with the drill bit and the first rotating shaft through second flanges; first spiral blades are arranged on the connecting drill rods; cavities are formed inside the connecting drill rods; and rotating shafts are arranged inside the cavities. The portable measuring device has the beneficial effects that the device is simple in structure and convenient to operate and use, rock soil of different depths can be sampled by drilling at one time, mixing of rock soil of different depths during ascending is avoided, the use safety is greatly improved, the sampling accuracy is improved, and the sampling measurement accuracy is improved.

A gas membrane sampling device, particularly for geological investigations, comprises a membrane element including a liquid-tight, gas-permeable membrane, a filler material contained in and stabilizing the membrane element, and a connection cable being adapted for conducting gas out of the membrane element through a bore hole to a surface of the earth's. A gas sensor device for geological investigations, comprises the gas membrane sampling device and an analyzing device connected with the connection cable of the gas membrane sampling device. Furthermore, a method for the investigation of a geological formation is described.

The invention relates to the technical field of a geothermal resource, and discloses an efficient geothermal resource exploration method based on a computer simulation technology. The efficient geothermal resource exploration method comprises the following steps of carrying out geological survey; selecting a region; and combined with the data of previous petroleum exploration and geological surveyin the region, ascertaining the stratigraphic age, lithologic characteristics, the geological structure and the magmatic activity of a geothermal field. About the measuring scale of geological surveymaps, the regional map should selects 1/100,000-1/25,000, and the geothermal field map should select 1/50,000-1/25,000. According to the efficient geothermal resource exploration method based on thecomputer simulation technology, through experimental analysis, a system adopts water, gas, rock and soil samples for analysis and identification, and the relevant parameters of heat storage are obtained; the geological profile information and the existing geothermal information are obtained after computer data simulation, and the distribution of geothermal resources was calculated by a computer summing up the template formula; and thus, a lot of manual analysis time can be saved, the efficiency is improved, and manpower is saved.

The invention discloses a layering remediation method for heavy metal contaminated soil. The layering remediation method comprises the following steps: carrying out geological investigation on contaminated soil; dividing the soil into upper-layer metal severely contaminated soil and bottom-layer metal mildly contaminated soil according to the longitudinal concentration distribution of pollutants,and determining a middle boundary line; digging out the upper-layer metal severely contaminated soil by a machine, removing construction waste and sundries through screening equipment, transferring the metal severely contaminated soil into a remediation reaction tank, adding a reducing agent A according to a ratio to remediate the upper-layer metal severely contaminated soil, applying a reducing agent B on the surface of the metal mildly contaminated soil, uniformly mixing the contaminated soil 20-25cm below the surface layer of the contaminated soil with the reducing agent B through plowing,and carrying out reacting for 8-20 days; and periodically detecting the concentration change of metal pollutants until the detected concentration is lower than a restoration target concentration. Thelayering remediation method for the heavy metal contaminated soil is good in remediation effect, and cost is greatly saved.

The invention discloses a submarine earthquake acquisition node adaptive control arrangement system. The system comprises a space positioning part, a signal control part, a source power part, an electric winch part, a fixation installation part and an auxiliary platform part. The parts cooperate with each other so as to realize adaptive arrangement of submarine earthquake acquisition nodes. The system is applied to submarine earthquake detection, oil gas exploration and geological investigation and has the advantages of high automation degree and accurate arrangement positions.

The invention discloses a method for determining the flatness ratio of a shallow and long-span city tunnel. The method includes the following steps that geological conditions of a stratum of a project are hierarchically generalized according to engineering geological investigation results; a grid model is built through numerical analysis software to simulate the tunnel construction process under the flatness ratio condition, and mechanical responses of the stratum and a supporting structure are solved; according to the requirements for the building safety and the building economical efficiency of the shallow and long-span city tunnel and environment influence control over the shallow and long-span city tunnel, an optimized objective function is proposed, and a result is simulated according to numerical values. The calculation flow of the analytic hierarchy process mainly includes the steps of building a hierarchical structure model; building a pairwise comparison judgment matrix; carrying out single hierarchical arrangement and a consistency check of the single hierarchical arrangement; carrying out comprehensive hierarchical arrangement and a consistency check of the comprehensive hierarchical arrangement. Parameter influence factors under different flatness ratios are analyzed with the analytic hierarchy process, weight comparison and calculation among multiple parameters are achieved, and a simple and convenient evaluation method is provided for multi-target or multi-criteria or structural-characteristic-free complex decision making problems.

The invention provides a landslide uncertainty model dynamic construction method based on multi-source heterogeneous data fusion. The landslide uncertainty model dynamic construction method comprisesthe steps of obtaining spatial variation information of landslide rock-soil mass mechanical parameters through combined application of geological survey, data collection, indoor mechanical tests, CT scanning and numerical sample random reconstruction technologies; constructing a landslide initial uncertainty model on the basis of spatial law statistics of mechanical parameters of the rock-soil body; carrying out landslide numerical simulation under corresponding working conditions in a non-invasive random finite element mode; constructing an intelligent response surface model of landslide output information and random variables at different time points, and updating an uncertainty model in real time by utilizing landslide direct information and monitoring indirect data based on the intelligent response surface model and an adaptive condition sampling reliability Bayesian inversion method, so that a multisource heterogeneous data fused landslide uncertainty model is established. The method has the advantages that a fine landslide geologic model is established, and an effective means is provided for subsequent landslide mechanism analysis and stability evaluation.

A soil layer quantization layering method based on double-bridge static sounding data of a BP neural network comprises the first step of collecting and sorting the double-bridge static sounding data and soil layering information, the second step of establishing a prediction model of the double-bridge static sounding soil property quantization layering BP neural network, the third step of training the prediction model of the double-bridge static sounding soil property quantization layering BP neural network, the fourth step of predicting the soil property type according to the trained prediction model of the double-bridge static sounding soil property quantization layering BP neural network, and the fifth step of determining the layering precision and carrying out layer combining processing on the prediction result to obtain the soil property quantization layering result finally. The soil layer quantization layering method has the advantages that a reliable theoretical basis is provided for soil property quantization layering, randomness and human factors in the soil type layering in the traditional reconnaissance are avoided, powerful support is provided for the reliability of the prediction model of the soil layer quantization layering BP neural network, the accuracy of the predication result is guaranteed, a large amount of drilling work in the engineering geological investigation in the future is reduced, and the investment cost of investigation is greatly saved.