CN112991531A - Dynamic construction method for refined three-dimensional hydrogeological model - Google Patents
Dynamic construction method for refined three-dimensional hydrogeological model Download PDFInfo
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Abstract
The invention provides a dynamic construction method for refining a three-dimensional hydrogeological model, which comprises the steps of collecting geological data of a modeling object in a research area, analyzing the structural characteristics of rock strata in the research area, and determining the interface elevation of each rock stratum and the dynamic characteristics of reservoir water level; preprocessing and inputting geological data; fusing preprocessed and input geological data into a three-dimensional space through multi-source data integration to realize integrated display, and constructing a refined three-dimensional hydrogeological model; carrying out dynamic exploration and model checking on the constructed refined three-dimensional hydrogeological model; and dynamically monitoring the groundwater level and drawing a groundwater flow field. The invention can meet the requirement of geotechnical engineering on the hydrogeological structure modeling precision, displays the relative relation of each stratum and geological structure and the intersection relation with underground facilities in a targeted manner, dynamically monitors the underground water level of a research area through a three-dimensional hydrogeological model, generates an underground water flow field model, and analyzes the formation conditions, characteristics, dynamic rules and the like of underground water.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering modeling, in particular to a dynamic construction method for a refined three-dimensional hydrogeological model.
Background
The traditional three-dimensional hydrogeological model construction method usually adopts a GIS technology, and the finally formed three-dimensional GIS geological model only contains stratum interface information, geotechnical engineering geological information and engineering information such as faults, broken zones and underground facilities, which are not completely covered, and after the model is cut, stratum profile information cannot be checked, the refinement degree of the modeling is not high enough, and the effect of the three-dimensional hydrogeological model cannot be fully exerted. Therefore, the dynamic modeling of the three-dimensional hydrogeological model is refined, and the engineering geology and hydrogeological information of the research area can be accurately reflected in real time.
Research shows that the three-dimensional geological modeling technology based on the data source at the present stage can be divided into four types according to the data source, namely modeling methods based on profile, scatter, drilling and multi-source data. The method is characterized by comprising five stages according to the technical hierarchy, namely a visualization stage, a measurement stage, an analysis stage, an updating stage and a temporal configuration stage, wherein the first three stages are static stages, and the last two stages are dynamic stages. The three-dimensional geological dynamic model based on the multi-source data can be analyzed by converting into the first three methods.
However, the current creation of a refined three-dimensional geological model of the stratum containing faults, underground facilities and some poor geologic bodies lacks a corresponding modeling technology. Faults and poor geologic bodies are often used as hydraulic connection channels and construction risk points of a research area and are also key points of engineering seepage control, the faults and the poor geologic bodies need to be reacted in a three-dimensional hydrogeological model, and the positions of construction risks and gushing water are predicted in advance by combining hydrogeological modeling of a data source, so that effective seepage control is achieved, and construction safety is guaranteed. Therefore, it is urgently needed to develop a refined three-dimensional hydrogeological modeling technology, and guide the work of the underground facility construction of the geotechnical engineering in the research area intuitively and in real time by utilizing the visibility of the three-dimensional hydrogeological modeling technology.
Disclosure of Invention
According to the technical problems provided by the method, a dynamic construction method for refining the three-dimensional hydrogeological model is provided. The method can accurately reflect the hydrogeological information of a research area, realize dynamic monitoring, early warning and forecasting of the underground water level of the area, provide a new means and method for analyzing and researching tunnel water inrush and seepage field evolution of an underground oil and gas reservoir, and the like, and have effective guiding significance for geotechnical engineering underground engineering construction.
The technical means adopted by the invention are as follows:
a dynamic construction method for refining a three-dimensional hydrogeological model comprises the following steps:
s1, collecting geological data of a modeling object of the research area, analyzing the structural characteristics of the rock stratum of the research area, and determining the elevation of the interface of each rock stratum and the dynamic characteristics of the reservoir water level;
s2, preprocessing and recording geological data;
s3, fusing the preprocessed and input geological data into a three-dimensional space through multi-source data integration to realize integrated display, and constructing a refined three-dimensional hydrogeological model;
and S4, carrying out dynamic exploration and model checking on the constructed refined three-dimensional hydrogeological model to obtain the refined three-dimensional hydrogeological model of the modeling object.
S5, obtaining the relation between the permeability coefficient and the depth through regression analysis according to geological survey data; obtaining the permeability tensor of the model according to the fracture occurrence data of geological exploration; further, the method comprises the following steps:
and S6, dynamically monitoring the underground water level and drawing an underground water flow field.
Further, the step S1 specifically includes:
s11, analyzing the structural characteristics of the rock stratum in the research area, and determining the elevation of the interface of each rock stratum and the dynamic characteristics of the reservoir water level;
s12, deducing the spatial distribution of the geologic body and the related structure in the research area on the premise of following the basic geological law;
and S13, on the premise of following the basic hydrogeological rule, estimating the space distribution and supply and discharge relation of the underground water in the research area.
Further, the geological data comprises geological data, exploration engineering reports and accompanying drawings thereof, hydrogeology supplementary exploration reports and accompanying drawings thereof.
Further, the step S2 specifically includes:
s21, according to data interpretation and identification, dividing the hydrogeological data of the reservoir area of the research area into an earth surface DEM, a stratum, a fault, a section and a geological boundary;
s22, carrying out vectorization processing on the data according to the data format required by the modeling software, and completing input or import of the data;
and S23, performing validation detection on the imported data, and taking the data after validation detection as the basis of three-dimensional modeling.
Further, the step S3 specifically includes:
s31, establishing a surface terrain model, a stratum interface model, a fault model and an underground facility model by a discrete smooth interpolation method and a Krigin interpolation method;
s32, establishing a layer model by using an interpolation method, and then generating an entity model;
and S33, under the drive of the engineering progress, updating and drawing all data or part of data of the model, and expressing the continuous change geological events and the engineering progress.
Further, the step S4 specifically includes:
s41, analyzing the relative relation between the stratum and the geological structure and the intersection relation between the stratum, the geological structure and the underground facility according to the geological and engineering geological information disclosed in the construction process based on the constructed refined three-dimensional hydrogeological model, locally adjusting the geometric data of the stratum or the geological structure, and checking the three-dimensional hydrogeological model;
and S42, under the drive of the project progress, updating and drawing all data or part of data of the model.
Further, the step S5 specifically includes:
s51, obtaining the relation between the permeability coefficient and the depth through regression analysis according to geological survey data;
s52, obtaining the permeability tensor of the model according to the fracture occurrence data of geological exploration;
further, the step S6 specifically includes:
s61, drawing the precision of the contour line of the groundwater level and the water level surface of the groundwater according to the survey monitoring real-time data, analyzing the spatial position of the real-time water level line, and reflecting the real-time change condition of the groundwater level;
and S62, drawing a groundwater flow field schematic diagram and a groundwater section flow direction schematic diagram, establishing a groundwater flow field model required by groundwater simulation, and analyzing formation conditions, characteristics and dynamic rules of groundwater through the groundwater flow field model.
Furthermore, the groundwater flow field model is integrated by a unit node, a virtual well, a streamline, an osmotic coefficient, an osmotic tensor and a water level heterogeneous data model.
Compared with the prior art, the invention has the following advantages:
1. the dynamic construction method of the refined three-dimensional hydrogeological model provided by the invention can accurately reflect hydrogeological information of a research area, realize dynamic monitoring, early warning and forecasting of the underground water level of the area, provide a new means and method for analyzing and researching tunnel water inrush and underground oil and gas reservoir seepage field evolution and the like, and has effective guiding significance for geotechnical engineering underground engineering construction.
2. The dynamic construction method for the refined three-dimensional hydrogeological model provided by the invention can meet the requirement of geotechnical engineering on hydrogeological structure modeling precision, displays the relative relation between each stratum and each geological structure and the intersection relation with underground facilities in a targeted manner, reflects the relation between the permeability coefficient and the depth change of the model, can determine the permeability tensor of the model, can dynamically monitor the underground water level of a research area through the constructed three-dimensional hydrogeological model, generates an underground water flow field model, and analyzes the formation condition, the characteristics, the dynamic rule and the like of underground water through the model.
Based on the reasons, the method can be widely popularized in the fields of geotechnical engineering modeling and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a diagram of formation data preprocessing provided by an embodiment of the invention.
Fig. 3 is a three-dimensional hydrogeological model diagram provided by the embodiment of the invention.
Fig. 4 is a diagram of an underground installation and a geological structure according to an embodiment of the present invention.
Fig. 5 is a ground water flow field diagram provided by an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, the present invention provides a dynamic construction method for refining a three-dimensional hydrogeological model, comprising the following steps:
s1, collecting geological data of a modeling object of the research area, analyzing the structural characteristics of the rock stratum of the research area, and determining the elevation of the interface of each rock stratum and the dynamic characteristics of the reservoir water level; the geological data comprises geological data, exploration engineering reports and drawings thereof, hydrogeology supplement exploration reports and drawings thereof.
In a specific implementation, as a preferred embodiment of the present invention, the step S1 specifically includes:
s11, analyzing the structural characteristics of the rock stratum in the research area, and determining the elevation of the interface of each rock stratum and the dynamic characteristics of the reservoir water level;
s12, deducing the spatial distribution of the geologic body and the related structure in the research area on the premise of following the basic geological law;
and S13, on the premise of following the basic hydrogeological rule, estimating the space distribution and supply and discharge relation of the underground water in the research area.
S2, preprocessing and recording geological data;
in a specific implementation, as a preferred embodiment of the present invention, the step S2 specifically includes:
s21, according to data interpretation and identification, dividing the hydrogeological data of the reservoir area of the research area into an earth surface DEM, a stratum, a fault, a section and a geological boundary; as shown in fig. 2, extracting and generalizing the elevation data of the stratum interfaces of 20 drill holes in the research area from the engineering geological column drawing of the geotechnical engineering survey report according to the relevant data in the original data such as the survey report, the engineering geological map, the geophysical prospecting data and the like, and dividing the data into surface topography, strata, faults, underground facilities, monitoring underground water level and the like;
s22, carrying out vectorization processing on data such as surface topography, strata, faults, underground facilities and monitoring underground water level according to data formats required by MVS, GeoView 3D, GeoSIS, GOCAD and the like, and completing data input or import; in the embodiment, modeling software GOCAD is taken as an example for explanation;
and S23, performing validation detection on the imported data, and taking the data after validation detection as the basis of three-dimensional modeling. And respectively importing the preprocessed data into a GOCAD (File-object-Raw files-Pointset-points from columns-based files) through a text format, directly reading in the GOCAD, and forming a point set object and a line object so as to facilitate the implementation of the next step.
S3, fusing the preprocessed and input geological data into a three-dimensional space through multi-source data integration to realize integrated display, and constructing a refined three-dimensional hydrogeological model;
in a specific implementation, as a preferred embodiment of the present invention, the step S3 specifically includes:
s31, establishing a surface terrain model, a stratum interface model, a fault model and an underground facility model by a discrete smooth interpolation method and a Krigin interpolation method;
s32, establishing a layer model by using an interpolation method, and then generating an entity model;
and S33, under the drive of the engineering progress, updating and drawing all data or part of data of the model, and expressing the continuous change geological events and the engineering progress. And finally, optimizing the geometric characteristics of the model to obtain a three-dimensional hydrogeological model as shown in figures 3 and 4.
And S4, carrying out dynamic exploration and model checking on the constructed refined three-dimensional hydrogeological model to obtain the refined three-dimensional hydrogeological model of the modeling object.
In a specific implementation, as a preferred embodiment of the present invention, the step S4 specifically includes:
s41, analyzing the relative relation between the stratum and the geological structure and the intersection relation between the stratum, the geological structure and the underground facility according to the geological and engineering geological information disclosed in the construction process based on the constructed refined three-dimensional hydrogeological model, locally adjusting the geometric data of the stratum or the geological structure, and checking the three-dimensional hydrogeological model;
and S42, under the drive of the engineering progress, updating and drawing all data or part of data of the model to obtain the final refined three-dimensional hydrogeological model.
S5, obtaining the relation between the permeability coefficient and the depth through regression analysis according to geological survey data; obtaining the permeability tensor of the model according to the fracture occurrence data of geological exploration;
in a specific implementation, as a preferred embodiment of the present invention, the step S5 specifically includes:
s51, obtaining the relation between the permeability coefficient and the depth through regression analysis according to the water pressure test data in the geological exploration data;
s52, obtaining the permeability tensor of the model according to the fracture occurrence data of geological exploration;
and S6, dynamically monitoring the underground water level and drawing an underground water flow field.
In a specific implementation, as a preferred embodiment of the present invention, the step S6 specifically includes:
s61, drawing the precision of the contour line of the groundwater level and the water level of the groundwater by adopting a Krigin interpolation method according to the survey monitoring real-time data, analyzing the spatial position of the real-time water level, and reflecting the change condition of the real-time groundwater level as shown in figure 4;
s62, drawing a groundwater flow field schematic diagram and a groundwater section flow direction schematic diagram, as shown in fig. 5, integrating heterogeneous data models such as a unit node (point set object), a virtual well (line object), a flow line (line object), a water level (surface object), etc., establishing a groundwater flow field model required for groundwater simulation, and analyzing formation conditions, characteristics and dynamic rules of groundwater through the groundwater flow field model.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A dynamic construction method for refining a three-dimensional hydrogeological model is characterized by comprising the following steps:
s1, collecting geological data of a modeling object of the research area, analyzing the structural characteristics of the rock stratum of the research area, and determining the elevation of the interface of each rock stratum and the dynamic characteristics of the reservoir water level;
s2, preprocessing and recording geological data;
s3, fusing the preprocessed and input geological data into a three-dimensional space through multi-source data integration to realize integrated display, and constructing an initial three-dimensional hydrogeological model;
and S4, carrying out dynamic exploration and model checking on the constructed initial three-dimensional hydrogeological model to obtain a refined three-dimensional hydrogeological model of the modeling object.
S5, obtaining the relation between the permeability coefficient and the depth through regression analysis according to geological survey data; and obtaining the permeability tensor of the model according to the fracture occurrence data of geological exploration.
2. The method of claim 1, further comprising the steps of:
and S6, dynamically monitoring the underground water level and drawing an underground water flow field.
3. The dynamic construction method for refining the three-dimensional hydrogeological model according to claim 1, wherein the step S1 specifically comprises:
s11, analyzing the structural characteristics of the rock stratum in the research area, and determining the elevation of the interface of each rock stratum and the dynamic characteristics of the reservoir water level;
s12, deducing the spatial distribution of the geologic body and the related structure in the research area on the premise of following the basic geological law;
and S13, on the premise of following the basic hydrogeological rule, estimating the space distribution and supply and discharge relation of the underground water in the research area.
4. The method of claim 1, wherein the geological data comprises geological data, exploration engineering reports and accompanying drawings, hydrogeological supplementary exploration reports and accompanying drawings.
5. The dynamic construction method for refining the three-dimensional hydrogeological model according to claim 1, wherein the step S2 specifically comprises:
s21, according to data interpretation and identification, dividing the hydrogeological data of the reservoir area of the research area into an earth surface DEM, a stratum, a fault, a section and a geological boundary;
s22, carrying out vectorization processing on the data according to the data format required by the modeling software, and completing input or import of the data;
and S23, performing validation detection on the input or imported data, and taking the data after validation detection as the basis of three-dimensional modeling.
6. The dynamic construction method for refining the three-dimensional hydrogeological model according to claim 1, wherein the step S3 specifically comprises:
s31, establishing a surface terrain model, a stratum interface model, a fault model and an underground facility model by a discrete smooth interpolation method and a Krigin interpolation method;
s32, establishing an aspect model by using an interpolation method, and then generating an entity structure model;
and S33, under the drive of the engineering progress, updating and drawing all data or part of data of the model, and expressing the continuous change geological events and the engineering progress.
7. The dynamic construction method for refining the three-dimensional hydrogeological model according to claim 1, wherein the step S4 specifically comprises:
s41, analyzing the relative relation between the stratum and the geological structure and the intersection relation between the stratum, the geological structure and the underground facility according to the geological and engineering geological information disclosed in the construction process based on the constructed refined three-dimensional hydrogeological model, locally adjusting the geometric data of the stratum or the geological structure, and checking the three-dimensional hydrogeological model;
and S42, under the drive of the project progress, updating and drawing all data or part of data of the model.
8. The dynamic construction method for refining the three-dimensional hydrogeological model according to claim 1, wherein the step S5 specifically comprises:
s51, obtaining the relation between the permeability coefficient and the depth through regression analysis according to geological survey data;
s52, obtaining the permeability tensor of the model according to the fracture occurrence data of geological exploration;
9. the dynamic construction method for refining the three-dimensional hydrogeological model according to claim 1, wherein the step S6 specifically comprises:
s61, drawing the precision of the contour line of the groundwater level and the water level surface of the groundwater according to the survey monitoring real-time data, analyzing the spatial position of the real-time water level line, and reflecting the real-time change condition of the groundwater level;
and S62, drawing a groundwater flow field schematic diagram and a groundwater section flow direction schematic diagram, establishing a groundwater flow field model required by groundwater simulation, and analyzing formation conditions, characteristics and dynamic rules of groundwater through the groundwater flow field model.
10. The dynamic construction method for refining the three-dimensional hydrogeological model according to claim 8, wherein the groundwater flow field model is integrated by unit nodes, virtual wells, flow lines, permeability coefficients, permeability tensors and water level heterogeneous data models.
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| CN118427946A (en) * | 2024-06-28 | 2024-08-02 | 中水北方勘测设计研究有限责任公司 | GGB-based hydraulic and hydroelectric engineering three-dimensional survey design method and system |
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