CN-121996732-A - Geotechnical engineering geological investigation system and geotechnical engineering geological investigation method

CN121996732ACN 121996732 ACN121996732 ACN 121996732ACN-121996732-A

Abstract

The invention discloses a geotechnical engineering geological investigation system and method, relates to the technical field of geological investigation, solves the problems of difficult multi-source data fusion, low intelligent recognition precision of geological anomalies and weak comprehensive regional evaluation and visual expression capability in the existing investigation method, and breaks through the limitation of independent storage of various data and formation of data island in the traditional investigation by constructing a unified comprehensive parameter vector, carrying out standardized integration and collaborative analysis on scattered drilling data, in-situ test parameters and real-time sensor monitoring data, thereby realizing the efficient fusion of multi-source heterogeneous information, solving the problem of data fragmentation and being capable of more comprehensively carrying out deep cognition and judgment on complex geological conditions.

Inventors

ZHANG YONGCHUANG
TANG FEIYUE
JIANG SHIRONG
LU MIN
ZHANG GAOPAN
MIAO FEI
ZHANG TIANYU
Feng Kunling

Assignees

广西大汉岩土工程有限责任公司

Dates

Publication Date: 20260508
Application Date: 20260115

Claims (10)

1. The geotechnical engineering geological investigation method is characterized by comprising the following steps of: firstly, arranging array detection nodes in a survey area, collecting rock-soil parameters and sensor data of each node, and generating a comprehensive parameter vector of each node; Step two, for each detection node, based on comparison of a preset rule base and a geographic neighborhood, respectively checking the intrinsic parameter coordination, the spatial field coordination and the physical response coordination of the detection node, calculating the comprehensive uncoordinated index of the node according to the checking result, calculating a proprietary judgment threshold value based on indexes of other nodes in the geographic neighborhood, comparing, identifying and calibrating an abnormal detection point; dividing a investigation region into a plurality of local units, calculating an integral coordination schedule based on node data in the units, and endowing each unit with a corresponding geological feature label according to a comparison result of the integral coordination schedule and a preset threshold value and combining a dominant mismatch type in the units; And fourthly, integrating the local units according to geographic coordinates, marking boundary types based on the reference feature similarity and geological label relation of adjacent units, drawing a graph by combining the distribution of the abnormal detection points, and integrating marking information to generate a global geological distribution map.
2. The geotechnical engineering geological survey method according to claim 1, wherein the generating the comprehensive parameter vector of each node specifically comprises: Determining soil layer types of each node through drilling sampling, and respectively obtaining standard penetration number, cone dynamic penetration number, cone tip resistance and side friction resistance through penetration test, cone dynamic penetration test and static penetration test; And carrying out standardized conversion on the soil layer category, the standard penetration number, the cone power penetration number, the cone tip resistance, the side friction resistance, the strain time sequence data and the temperature time sequence data to form a comprehensive parameter vector of the node.
3. A geotechnical engineering geological investigation method according to claim 1, characterized in that the checking of intrinsic parameter coordination specifically comprises: according to the soil layer category codes of the current detection nodes, matching a corresponding standard penetration number range and a cone tip resistance range from a preset association rule base; calculating the ratio of the actual measured cone tip resistance to the actual measured standard penetration number of the current node; Judging whether the ratio is in a ratio interval preset for the soil layer category in the association rule base, if not, judging that the ratio is the intrinsic mismatch.
4. The geotechnical engineering geological investigation method according to claim 1, wherein the specific way of checking the coordination of the spatial field is: taking the current detection node as a center, and acquiring all other detection nodes with the geographic distance not exceeding the preset grid side length L as a neighborhood point set; Calculating a difference vector of the comprehensive parameter vector of the current node and the comprehensive parameter vector of each node in the neighborhood point set, and determining a direction angle of each difference vector on the two-dimensional geographic plane; And calculating standard deviation of all the direction angles, and judging that the field is out of coordination if the standard deviation exceeds a preset dispersion threshold value.
5. Geotechnical engineering geological investigation method according to claim 1, characterized in that the checking of physical response coordination specifically comprises: Extracting a strain data sequence of a current detection node in a continuous preset time length, and calculating a standard deviation sigma i of the sequence; Extracting strain data sequences of all other detection points in a preset geographic neighborhood of the strain data sequences within the same time period, and calculating an average value sigma b of standard deviations of the sequences; calculating a strain fluctuation coefficient rs=σi/σb; Extracting temperature data sequences of a current detection point and all other detection points in the same geographic neighborhood in the same period, calculating a correlation coefficient PT of the current point temperature sequence and an average temperature sequence of the neighborhood points, and calculating temperature response deviation Rt=1-PT; If Rs is larger than a preset fluctuation coefficient threshold value Ts or Rt and is larger than a preset temperature response deviation degree threshold value Tt, judging that the physical response is out of coordination.
6. The geotechnical engineering geological survey method according to claim 1, wherein the calculating of the comprehensive uncoordinated index of the node is specifically: If intrinsic mismatch occurs, calculating a first scalar value S1 based on the deviation degree of the measured ratio and the median value in the preset ratio interval, otherwise, making S1=0; if the spatial field mismatch occurs, calculating a second scalar value S2 based on the ratio of the standard deviation of the direction angle and the threshold value of the dispersion, otherwise, making S2=0; if the physical response is out of coordination, calculating a third scalar value S3 based on the strain fluctuation coefficient, the temperature response deviation degree and the exceeding degree of the respective threshold value, otherwise, enabling S3=0; The complex uncoordinated index Ii is calculated by the formula ii=β1×f (S1) +β2×f (S2) +β3×f (S3), where β1, β2, β3 are preset weight coefficients and F () is a preset normalization function.
7. A geotechnical engineering geological survey method according to claim 1, wherein identifying and calibrating an anomaly detection point comprises: the method comprises the steps of taking a current detection node as a center, presetting a grid side length L to define a geographic neighborhood, and obtaining comprehensive uncoordinated indexes Ii of all other detection points in the neighborhood; Calculating the median value Iz and the quartile range Is of the index set; Calculating an exclusive judgment threshold Y1 according to a formula of Y1=Iz+KxIS, wherein K Is a preset coefficient; if the comprehensive uncoordinated index Ii of the current node is larger than Y1, the current node is marked as an abnormal detection point.
8. The geotechnical engineering geological survey method according to claim 1, wherein in the third step, the assigning of geological feature tags to each unit specifically comprises: Extracting comprehensive parameter vectors of all nodes which are not calibrated as abnormal detection points in a local unit, and calculating the mean value V and variance V difference of the comprehensive parameter vectors to be used as reference parameter characteristics of the unit; Counting the quantity of abnormal detection points in the unit to obtain a ratio Pabn; calculating the overall coordination degree C of the unit according to the formula C unit= (1-Pabn) x (1-intra-unit Ii mean/intra-unit Ii maximum); and selecting corresponding labels from a group of predefined geological labels to be endowed according to the size relation between the C bureau and preset coordination thresholds T1 and T2 and combining the dominant mismatch types in the units.
9. The geotechnical engineering geological survey method of claim 1, wherein the generating a global geological profile comprises: Embedding each local unit into a global grid according to the geometric boundary and the geographic coordinates of each local unit; Calculating cosine similarity Sim of reference parameter feature vectors V of any two adjacent local units, if Sim is larger than or equal to a preset similarity threshold Tsim, marking the joint boundary as smooth transition, otherwise marking the joint boundary as a geological mutation zone; if the geological labels of two adjacent units are different and one of the two units is obviously abnormal aggregation type, recording the adjacent units as an abnormal diffusion boundary at the joint boundary; filling the units of different geological labels with different colors; For the unit groups which are the same and adjacent to the geological label, connecting the abnormal detection points on the boundary of the unit groups to form a closed polygon surrounding the area; in the figure, each unit is marked with the ratio of the geological label name and the average outlier, and the unit center is marked with the whole coordination degree C bureau.
10. Geotechnical engineering geological survey system for implementing a geotechnical engineering geological survey method according to any one of claims 1 to 9, characterized in that it comprises: The acquisition module is used for performing drilling, sampling and sounding tests at the array detection nodes of the survey area and deploying sensors so as to acquire rock-soil parameters, the number of hits, cone tip resistance, side friction resistance, strain time sequence data and temperature time sequence data; The processing module is connected to the acquisition module and is used for normalizing the acquired original data and generating comprehensive parameter vectors of all detection points, executing intrinsic parameter coordination test, spatial field coordination test and physical response coordination test based on an association rule base and a preset algorithm, calculating comprehensive uncoordinated indexes and exclusive judgment thresholds, and comparing the comprehensive uncoordinated indexes with the exclusive judgment thresholds to identify and calibrate abnormal detection points; The evaluation module is connected to the processing module and is used for dividing the investigation region into local units according to the preset grid side length, calculating the reference parameter characteristics, the abnormal point occupation ratio and the overall coordination degree of each unit, and assigning a predefined geological characteristic label for each unit according to the comparison result of the overall coordination degree and the preset threshold value and the abnormal type led in the unit; The imaging module is connected to the evaluation module and is used for integrating each local unit into a global grid according to geographic coordinates, calculating and marking boundary types between adjacent units, performing color filling based on geological labels, forming a closed geometric figure according to the distributed connection of abnormal detection points, and integrating marking information to generate a global geological complete distribution map; the storage module is connected with the modules and is used for storing the association rule base, the collected original data, the intermediate data generated by processing and the final drawing data.

Description

Geotechnical engineering geological investigation system and geotechnical engineering geological investigation method Technical Field The invention relates to the technical field of geological survey, in particular to a geotechnical engineering geological survey system and method. Background Geotechnical engineering geological investigation is a front foundation and safety guarantee for various engineering constructions such as highways, high-speed rails, bridges, house buildings and the like, and has the core tasks of accurately finding out stratum structures, geotechnical physical and mechanical properties and potential geological disaster risks of engineering sites, and the accuracy and reliability of investigation results directly determine the safety, economy and construction feasibility of engineering design schemes, so that the geotechnical engineering geological investigation has a vital effect on preventing engineering accidents and controlling construction costs. At present, geotechnical engineering geological exploration mainly depends on two modes of traditional manual exploration and prior art chemical exploration, wherein the traditional manual exploration depends on field experience of engineers, and the whole geological condition is inferred through limited drilling points, manual recording and subjective judgment, so that not only is great labor and time consumed, but also the exploration efficiency is low, the requirement of rapid promotion of modern large-scale engineering is difficult to meet, more importantly, the manual judgment is extremely easily influenced by personal experience and subjective cognition limitation, and has insufficient identification capability on subtle changes of stratum, spatial variation trend and hidden bad geological bodies, so that the exploration conclusion is inconsistent, the reliability is poor, and the engineering safety hidden danger is possibly buried. The prior art investigation method improves the data management efficiency to a certain extent, but has obvious technical bottlenecks that on one hand, most methods store and analyze various investigation data such as drilling, geophysical prospecting and testing in an isolated manner to form data islands, an effective multisource information fusion and collaborative analysis mechanism is lacked, integrity and deep cognition of geological conditions are difficult to form, on the other hand, identification of geological anomalies depends on a single parameter threshold or global statistics index, spatial correlation and local background change of the geological parameters cannot be fully considered, hidden defects of normal parameters but abnormal spatial trend cannot be effectively captured, normal variation conforming to the local background is easily misjudged as abnormal, misjudgment and missed judgment coexist, in addition, in the process from discrete punctiform data to regional comprehensive evaluation, the conventional method depends on manual sketching or simple interpolation, the result map information dimension is single, geological partition characteristics, abnormal region range and spatial transition relation are difficult to intuitively and integrally reflect, and decision support capability is poor. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a geotechnical engineering geological investigation system and method, which solve the problems of difficult multi-source data fusion, low intelligent identification precision of geological anomalies and weak comprehensive evaluation and visual expression capability of areas in the existing investigation method. In order to achieve the purpose, the geotechnical engineering geological investigation method is realized by the following technical scheme that the geotechnical engineering geological investigation method comprises the following steps of: firstly, arranging array detection nodes in a survey area, collecting rock-soil parameters and sensor data of each node, and generating a comprehensive parameter vector of each node; Step two, for each detection node, based on comparison of a preset rule base and a geographic neighborhood, respectively checking the intrinsic parameter coordination, the spatial field coordination and the physical response coordination of the detection node, calculating the comprehensive uncoordinated index of the node according to the checking result, calculating a proprietary judgment threshold value based on indexes of other nodes in the geographic neighborhood, comparing, identifying and calibrating an abnormal detection point; dividing a investigation region into a plurality of local units, calculating an integral coordination schedule based on node data in the units, and endowing each unit with a corresponding geological feature label according to a comparison result of the integral coordination schedule and a preset threshold value and combining a dominant mismatch type in the