CN112991531B - Dynamic construction method of refined three-dimensional hydrogeologic model - Google Patents
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- 238000010276 construction Methods 0.000 title claims abstract description 22
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- 238000000034 method Methods 0.000 claims abstract description 34
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- 239000003673 groundwater Substances 0.000 claims abstract description 21
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- 230000015572 biosynthetic process Effects 0.000 claims abstract description 7
- 238000007781 pre-processing Methods 0.000 claims abstract description 6
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- 238000011835 investigation Methods 0.000 claims description 16
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Abstract
The invention provides a dynamic construction method of a refined three-dimensional hydrogeologic model, which comprises the steps of collecting geological data of a modeling object of a research area, analyzing structural characteristics of rock stratum of the research area, and determining interface elevation of each rock stratum and reservoir area water level dynamic characteristics; preprocessing and inputting geological data; integrating preprocessing 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; performing dynamic exploration and model checking on the constructed refined three-dimensional hydrogeologic model; and (5) dynamically monitoring the underground water level and drawing an underground water flow field. The method can meet the requirement of geotechnical engineering on the modeling precision of the hydrogeologic structure, pertinently displays the relative relation between each stratum and the geologic structure and the intersecting relation with underground facilities, dynamically monitors the groundwater level in the researched area through the three-dimensional hydrogeologic model, generates a groundwater flow field model, and analyzes the formation conditions, characteristics, dynamic rules and the like of groundwater.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering modeling, in particular to a dynamic construction method of a refined three-dimensional hydrogeologic model.
Background
The traditional three-dimensional hydrogeologic model construction method often adopts a GIS technology, and the finally formed three-dimensional GIS geologic model only comprises stratum interface information, geotechnical engineering geologic information such as faults, broken zones and underground facilities and engineering information, and cannot check stratum section information after the model is split, so that the modeling refinement degree is not high enough, and the effect of the three-dimensional hydrogeologic model cannot be fully exerted. Therefore, the dynamic modeling of the refined three-dimensional hydrogeologic model can accurately reflect engineering geology and hydrogeology information of a research area in real time.
Through investigation, 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 section, scattered points, drilling and multi-source data. The method is divided into five stages according to the technical level, namely a visualization stage, a measurement stage, an analysis stage, an updating stage and a temporal modeling stage, wherein the first three stages are static stages, and the second two stages are dynamic stages. Three-dimensional geologic dynamic model based on multi-source data can be analyzed by converting into the first three methods.
But the creation of refined three-dimensional geologic models containing faults, subsurface facilities, and some poor geologic bodies in formations currently lacks corresponding modeling techniques. The fault and bad geologic body are often used as hydraulic connection channels of a research area and construction risk points, are also key points of engineering seepage control, need to react in a three-dimensional hydrogeologic model, and are combined with hydrogeologic modeling of a data source to predict the construction risk and the position of gushing water in advance, so that effective seepage control is achieved, and the construction safety is ensured. Therefore, there is a need to develop a refined three-dimensional hydrogeologic modeling technique that utilizes its visibility to intuitively and real-time guide the work of studying regional geotechnical engineering underground facility construction.
Disclosure of Invention
According to the technical problems, a dynamic construction method of a refined three-dimensional hydrogeologic model is provided. The method can accurately reflect the hydrogeologic information of the research area, realize the dynamic monitoring, early warning and forecasting of the groundwater level of the area, provide a new means and method for analyzing and researching the tunnel gushing water and the seepage field evolution of the underground oil and gas reservoir, and has effective guiding significance for geotechnical engineering underground engineering construction.
The invention adopts the following technical means:
a dynamic construction method of a refined three-dimensional hydrogeologic model comprises the following steps:
s1, collecting geological data of a modeling object of a research area, analyzing structural characteristics of rock stratum of the research area, and determining interface elevation of each rock stratum and reservoir area water level dynamic characteristics;
s2, preprocessing and inputting geological data;
s3, integrating 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 hydrogeologic model;
s4, performing dynamic exploration and model checking on the constructed refined three-dimensional hydrogeologic model to obtain a refined three-dimensional hydrogeologic model of the modeling object.
S5, obtaining the relation between the permeability coefficient and the depth through regression analysis according to geological investigation data; obtaining the permeability tensor of the model according to the fracture occurrence data of geological investigation; further, the method comprises the following steps:
s6, dynamically monitoring the underground water level and drawing an underground water flow field.
Further, the step S1 specifically includes:
s11, analyzing structural characteristics of rock stratum in a research area, and determining the elevation of an interface of each rock stratum and the dynamic characteristics of water level in a reservoir area;
s12, under the premise of following basic geological rules, deducing the spatial distribution of the geologic body and related structures of the research area;
s13, under the premise of following a basic hydrogeological rule, estimating the groundwater space distribution and the supply and discharge relationship of the research area.
Further, the geological data includes geological data, survey engineering reports and drawings thereof, hydrogeological supplemental survey reports and drawings of the accompanying tables thereof.
Further, the step S2 specifically includes:
s21, dividing hydrogeologic data of a reservoir area of a research area into a ground surface DEM, stratum, fault, section and geological boundary according to data interpretation and identification;
s22, carrying out vectorization processing on data according to a data format required by modeling software, and finishing input or importing of the data;
s23, performing verification detection on the imported data, and taking the data after verification detection as a basis of three-dimensional modeling.
Further, the step S3 specifically includes:
s31, establishing a surface topography model, a stratum interface model, a fault model and an underground facility model by a discrete smooth interpolation method and a Kriging interpolation method;
s32, establishing a layer model by using an interpolation method, and then generating a solid model;
and S33, under the driving of the engineering progress, updating and drawing all or part of data of the model, and expressing the continuously-changing geological event and the engineering progress.
Further, the step S4 specifically includes:
s41, analyzing the relative relation between stratum and geological structure and the intersection relation of stratum, geological structure and underground facilities according to geological and engineering geological information disclosed in the construction process based on the constructed refined three-dimensional hydrogeological model, locally adjusting geometric data of stratum or geological structure, and checking the three-dimensional hydrogeological model;
s42, under the driving of the engineering progress, updating and drawing all 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 investigation data;
s52, obtaining a permeation tensor of the model according to fracture occurrence data of geological investigation;
further, the step S6 specifically includes:
s61, drawing the precision of the underground water level contour line and the water level surface of the underground water according to the investigation monitoring real-time data, analyzing the space position of the real-time water level line, and reflecting the real-time underground water level change condition;
and S62, drawing an underground water flow field schematic diagram and an underground water section flow direction schematic diagram, establishing an underground water flow field model required by underground water simulation, and analyzing the formation conditions, characteristics and dynamic rules of the underground water through the underground water flow field model.
Further, the groundwater flow field model is integrated by a unit node, a virtual well, a streamline, a permeability coefficient, a permeability 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 hydrogeologic model can accurately reflect the hydrogeologic information of a research area, realize the dynamic monitoring, early warning and forecasting of the groundwater level of the area, provide a new means and method for analyzing and researching tunnel gushing water and the seepage field evolution of an underground oil and gas reservoir, and the like, and have effective guiding significance for geotechnical engineering underground engineering construction.
2. The dynamic construction method of the refined three-dimensional hydrogeologic model can meet the requirement of geotechnical engineering on the modeling precision of the hydrogeologic structure, pertinently shows the relative relation between each stratum and the geologic structure and the intersecting relation with underground facilities, 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 groundwater level in a researched area through the constructed three-dimensional hydrogeologic model, generates a groundwater flow field model, and analyzes the formation conditions, characteristics, dynamic rules and the like of groundwater 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 that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a diagram of preprocessing formation data according to an embodiment of the present invention.
Fig. 3 is a three-dimensional hydrogeologic model diagram provided by an embodiment of the invention.
FIG. 4 is a schematic diagram of an embodiment of the present invention for a subsurface facility and geological architecture.
Fig. 5 is a diagram of an underground water flow field provided by an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise 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 invention provides a dynamic construction method of a refined three-dimensional hydrogeologic model, which comprises the following steps:
s1, collecting geological data of a modeling object of a research area, analyzing structural characteristics of rock stratum of the research area, and determining interface elevation of each rock stratum and reservoir area water level dynamic characteristics; the geological data comprises geological data, exploration engineering reports and attached drawings thereof, hydrogeological supplementary exploration reports and attached drawings thereof.
In specific implementation, as a preferred embodiment of the present invention, the step S1 specifically includes:
s11, analyzing structural characteristics of rock stratum in a research area, and determining the elevation of an interface of each rock stratum and the dynamic characteristics of water level in a reservoir area;
s12, under the premise of following basic geological rules, deducing the spatial distribution of the geologic body and related structures of the research area;
s13, under the premise of following a basic hydrogeological rule, estimating the groundwater space distribution and the supply and discharge relationship of the research area.
S2, preprocessing and inputting geological data;
in specific implementation, as a preferred embodiment of the present invention, the step S2 specifically includes:
s21, dividing hydrogeologic data of a reservoir area of a research area into a ground surface DEM, stratum, fault, section and geological boundary according to data interpretation and identification; as shown in fig. 2, the relevant data in the original data such as the investigation report, the engineering geological map, the geophysical prospecting data and the like are extracted from the engineering geological columnar drawing of the geotechnical engineering investigation report, and the stratum interface elevation data of 20 drilling holes in the investigation region are generalized and divided into the surface topography, the stratum, the fault, the underground facilities, the monitoring groundwater level and the like;
s22, carrying out vectorization processing on data such as surface topography, stratum, fault, underground facilities and monitoring groundwater level according to data formats such as MVS, geoView 3D, geoSIS and GOCAD and the like, and finishing data input or importing; in this embodiment, modeling software GOCAD is taken as an example for explanation;
s23, performing verification detection on the imported data, and taking the data after verification detection as a basis of three-dimensional modeling. The preprocessed data are respectively imported into GOCAD (File-import objects-Raw files-point set-Pointsets from columns-based) through text format/directly read into GOCAD to form point set objects and line objects for the next implementation.
S3, integrating 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 hydrogeologic model;
in specific implementation, as a preferred embodiment of the present invention, the step S3 specifically includes:
s31, establishing a surface topography model, a stratum interface model, a fault model and an underground facility model by a discrete smooth interpolation method and a Kriging interpolation method;
s32, establishing a layer model by using an interpolation method, and then generating a solid model;
and S33, under the driving of the engineering progress, updating and drawing all or part of data of the model, and expressing the continuously-changing geological event and the engineering progress. And finally, optimizing the geometric characteristics of the model to obtain a three-dimensional hydrogeologic model as shown in fig. 3 and 4.
S4, performing dynamic exploration and model checking on the constructed refined three-dimensional hydrogeologic model to obtain a refined three-dimensional hydrogeologic model of the modeling object.
In specific implementation, as a preferred embodiment of the present invention, the step S4 specifically includes:
s41, analyzing the relative relation between stratum and geological structure and the intersection relation of stratum, geological structure and underground facilities according to geological and engineering geological information disclosed in the construction process based on the constructed refined three-dimensional hydrogeological model, locally adjusting geometric data of stratum or geological structure, and checking the three-dimensional hydrogeological model;
and S42, under the drive of the engineering progress, updating and drawing all or part of data of the model to obtain the final refined three-dimensional hydrogeologic model.
S5, obtaining the relation between the permeability coefficient and the depth through regression analysis according to geological investigation data; obtaining the permeability tensor of the model according to the fracture occurrence data of geological investigation;
in 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 pressurized water test data in the geological exploration data;
s52, obtaining a permeation tensor of the model according to fracture occurrence data of geological investigation;
s6, dynamically monitoring the underground water level and drawing an underground water flow field.
In specific implementation, as a preferred embodiment of the present invention, the step S6 specifically includes:
s61, drawing the precision of the underground water level contour line and the water level surface of the underground water by adopting a Kriging interpolation method according to the reconnaissance monitoring real-time data, analyzing the space position of the real-time water level line, and reflecting the real-time underground water level change condition as shown in fig. 4;
s62, drawing a groundwater flow field schematic diagram and a groundwater section flow direction schematic diagram, integrating heterogeneous data models such as unit nodes (point set objects), virtual wells (line objects), streamline (line objects), water levels (facing objects) and the like as shown in fig. 5, 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.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. A dynamic construction method of a refined three-dimensional hydrogeologic model is characterized by comprising the following steps:
s1, collecting geological data of a modeling object of a research area, analyzing structural characteristics of rock stratum of the research area, and determining interface elevation of each rock stratum and reservoir area water level dynamic characteristics; the step S1 specifically includes:
s11, analyzing structural characteristics of rock stratum in a research area, and determining the elevation of an interface of each rock stratum and the dynamic characteristics of water level in a reservoir area;
s12, under the premise of following basic geological rules, deducing the spatial distribution of the geologic body and related structures of the research area;
s13, under the premise of following a basic hydrogeological rule, estimating the groundwater space distribution and the supply and discharge relationship of the research area;
s2, preprocessing and inputting geological data; the step S2 specifically includes:
s21, dividing hydrogeologic data of a reservoir area of a research area into a ground surface DEM, stratum, fault, section and geological boundary according to data interpretation and identification;
s22, carrying out vectorization processing on data according to a data format required by modeling software, and finishing input or importing of the data;
s23, performing verification detection on input or imported data, and taking the data after verification detection as a basis of three-dimensional modeling;
s3, integrating 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 hydrogeologic model; the step S3 specifically includes:
s31, establishing a surface topography model, a stratum interface model, a fault model and an underground facility model by a discrete smooth interpolation method and a Kriging interpolation method;
s32, establishing a layer model by using an interpolation method, and then generating a physical structure model;
s33, under the drive of the engineering progress, updating and drawing all or part of data of the model, and expressing the continuously-changing geological event and the engineering progress;
s4, performing dynamic exploration and model checking on the constructed initial three-dimensional hydrogeologic model to obtain a refined three-dimensional hydrogeologic model of the modeling object; the step S4 specifically includes:
s41, analyzing the relative relation between stratum and geological structure and the intersection relation of stratum, geological structure and underground facilities according to geological and engineering geological information disclosed in the construction process based on the constructed refined three-dimensional hydrogeological model, locally adjusting geometric data of stratum or geological structure, and checking the three-dimensional hydrogeological model;
s42, under the drive of the engineering progress, updating and drawing all or part of data of the model;
s5, obtaining the relation between the permeability coefficient and the depth through regression analysis according to geological investigation data; and obtaining the permeability tensor of the model according to the fracture occurrence data of the geological survey.
2. The method for dynamic construction of a refined three-dimensional hydrogeologic model of claim 1, further comprising the steps of:
s6, dynamically monitoring the underground water level and drawing an underground water flow field.
3. The method of dynamic construction of a refined three-dimensional hydrogeologic model of claim 1, wherein the geologic data comprises geologic data, survey engineering reports and drawings thereof, hydrogeologic replenishment survey reports and drawings thereof.
4. The method for dynamically constructing a refined three-dimensional hydrogeologic 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 investigation data;
s52, obtaining the permeability tensor of the model according to fracture occurrence data of geological investigation.
5. The method for dynamically constructing a refined three-dimensional hydrogeologic model according to claim 1, wherein the step S6 specifically comprises:
s61, drawing the precision of the underground water level contour line and the water level surface of the underground water according to the investigation monitoring real-time data, analyzing the space position of the real-time water level line, and reflecting the real-time underground water level change condition;
and S62, drawing an underground water flow field schematic diagram and an underground water section flow direction schematic diagram, establishing an underground water flow field model required by underground water simulation, and analyzing the formation conditions, characteristics and dynamic rules of the underground water through the underground water flow field model.
6. The method of claim 5, wherein the groundwater flow field model is integrated by unit nodes, virtual wells, streamlines, permeability coefficients, permeability tensors, water level heterogeneous data models.
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