A dynamic construction method and system for three-dimensional hydrogeological model

Abstract

The present invention relates to a method and system for dynamically constructing a three-dimensional hydrogeological model, the method comprising: obtaining geographical environment information of a monitoring area, obtaining monitoring sites of the monitoring area according to the geographical environment information; setting a monitoring device at the monitoring site, obtaining geological data and hydrological data, constructing a geological model based on the geological data, and constructing a hydrological dynamic model through the hydrological data; determining the relative position of the geological model and the hydrological dynamic model based on the geographical location of the monitoring device, mapping the hydrological dynamic model to the geological model according to the relative position, and obtaining a three-dimensional hydrogeological model. The present invention can more accurately reflect the hydrogeological information in the monitoring area in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogeological modeling, and in particular to a method and system for dynamically constructing a three-dimensional hydrogeological model. Background Art

[0002] Hydrogeology is a branch of geology, referring to the various changes and movements of groundwater in nature. It mainly studies the distribution and formation of groundwater, as well as the physical properties and chemical composition of groundwater.

[0003] With the development of geological technology, three-dimensional hydrogeological modeling technology has emerged, which can understand, express and reproduce geological bodies and hydrological environments in a digital form, and realize the three-dimensional display and geological analysis of hydrogeological models. However, the construction method of traditional three-dimensional hydrogeological models often adopts GIS technology, with the help of computers and visualization technology, combined with a variety of geological analysis tools. The final three-dimensional GIS hydrogeological model only contains hydrological information, stratigraphic interface information, faults, fracture zones, underground facilities and other hydrogeological information, which is not comprehensive. After cutting the model, it is impossible to view the stratigraphic profile information. The modeling is not refined enough, and the role of the three-dimensional hydrogeological model cannot be fully exerted.

[0004] Therefore, there is an urgent need for a dynamic construction method and system of a three-dimensional hydrogeological model that can accurately reflect the hydrogeological information in the monitoring area in real time. Summary of the invention

[0005] The purpose of the present invention is to provide a method and system for dynamically constructing a three-dimensional hydrogeological model to solve the problems existing in the above-mentioned prior art and reflect the hydrogeological information in the monitoring area in real time.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A method for dynamically constructing a three-dimensional hydrogeological model, comprising:

[0008] Acquire geographical environment information of a monitoring area, and acquire monitoring sites of the monitoring area according to the geographical environment information;

[0009] A monitoring device is set at the monitoring site to obtain geological data and hydrological data, a geological model is constructed based on the geological data, and a hydrological dynamic model is constructed through the hydrological data;

[0010] Based on the geographical location of the monitoring device, the relative position of the geological model and the hydrological dynamic model is determined, and according to the relative position, the hydrological dynamic model is mapped to the geological model to obtain a three-dimensional hydrogeological model.

[0011] Optionally, a monitoring device is provided in the monitoring site, and obtaining geological data and hydrological data includes:

[0012] A sonar device is arranged in the monitoring site, and hydrological data is acquired based on the sonar device;

[0013] A geological monitoring device is arranged at the monitoring site, and a hole is drilled at the monitoring site. The geological monitoring device sequentially searches for the positions of all the holes from deep to shallow to reveal the geological data.

[0014] Optionally, the hydrological data includes: water level data and water temperature data.

[0015] Optionally, based on the geological data, constructing a geological model includes:

[0016] Based on the projection of the geological data onto a predetermined reference line, a two-dimensional section line is formed, and the geological layers are distinguished by the geological data to construct the boundary line of the geological layers;

[0017] The two-dimensional section line is projected into three-dimensional space, and each geological layer is topologically reconstructed through the boundary line of the geological layer, and adjacent geological layers are synthesized to construct the geological model.

[0018] Optionally, distinguishing geological layers by using the geological data and constructing the boundary lines of the geological layers comprises:

[0019] Processing the borehole positions by spatial interpolation, connecting the borehole positions, and obtaining a cross-sectional relationship of the geological layer;

[0020] According to the disclosed geological data, the layer relationship of each geological layer is determined, and the boundary line of the geological layer is constructed through the cross-sectional relationship and the layer relationship.

[0021] Optionally, constructing a hydrological dynamic model using the hydrological data includes:

[0022] Constructing a hydrodynamic model, and determining water motion state parameters according to the hydrodynamic model;

[0023] Using water level data as background grid and water temperature data as drop, a discrete grid whose grid unit size changes with drop is obtained, and the water movement state parameters are assigned to grid nodes to construct the hydrological dynamic model.

[0024] Optionally, the method for constructing the hydrodynamic model is:

[0025]

[0026] Among them, A x , A y , A Zare the hydraulic conductivity coefficients in the x, y, and z directions, respectively. are the partial derivatives of x, y, and z respectively, H is the groundwater head, V is the dependent variable, i is the groundwater recharge, B i is the aquifer storage coefficient, and T is the time.

[0027] To achieve the above object, the present invention also provides a dynamic construction system for a three-dimensional hydrogeological model, comprising:

[0028] A site acquisition module, a first model building module, and a second model building module;

[0029] The site acquisition module is used to acquire geographical environment information of the monitoring area, and acquire the monitoring site of the monitoring area according to the geographical environment information;

[0030] The first model building module is used to set a monitoring device in the monitoring site, obtain geological data and hydrological data, build a geological model based on the geological data, and build a hydrological dynamic model through the hydrological data;

[0031] The second model building module is used to determine the relative position of the geological model and the hydrological dynamic model based on the geographical location of the monitoring device, and map the hydrological dynamic model to the geological model according to the relative position to obtain a three-dimensional hydrogeological model;

[0032] Wherein, the site acquisition module, the first model construction module and the second model construction module are connected in sequence.

[0033] The beneficial effects of the present invention are:

[0034] The present invention reconstructs the topology of each geological layer through geological data projection and the boundary line of the geological layer, synthesizes adjacent geological layers, constructs the geological model, uses water level data as the background grid, uses water temperature data as the drop, assigns water movement state parameters to the grid nodes, constructs a hydrological dynamic model, maps the hydrological dynamic model to the geological model, obtains a three-dimensional hydrogeological model, and makes the water level dynamically presented in the three-dimensional hydrogeological structure model. It can realize purposeful cutting at any position, and specifically view and analyze the geological structure and water movement state of a specific point. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 The present invention is a flowchart of a method for dynamically constructing a three-dimensional hydrogeological model according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1 As shown, the present invention discloses a method for dynamically constructing a three-dimensional hydrogeological model, comprising:

[0040] Obtain the geographical environment information of the monitoring area, and obtain the monitoring sites of the monitoring area based on the geographical environment information; set up monitoring devices at the monitoring sites, obtain geological data and hydrological data, construct a geological model based on the geological data, and construct a hydrological dynamic model through the hydrological data; determine the relative position of the geological model and the hydrological dynamic model based on the geographical location of the monitoring device, map the hydrological dynamic model to the geological model based on the relative position, and obtain a three-dimensional hydrogeological model.

[0041] The monitoring sites for obtaining the monitoring area include:

[0042] The geomorphic features of the monitoring area are obtained, and the overall geomorphic collection and modeling of the space within the monitoring area are carried out by drones carrying GPS, so as to obtain the geographic environment information within the monitoring area. By searching for original geological and hydrogeological data, and using the original geological data and original observation holes and drilling data, rough-precision geological structure data are initially obtained. Then, field verification drilling and supplementary drilling are carried out in the areas where original drilling holes exist. That is, supplementary drilling is carried out in the areas where geological changes occur according to the geographic environment information, so as to obtain the monitoring sites in the monitoring area.

[0043] Setting a monitoring device at the monitoring site to obtain geological data and hydrological data includes: setting a sonar device at the monitoring site, and obtaining hydrological data based on the sonar device; setting a geological monitoring device at the monitoring site, drilling holes at the monitoring site, and searching the drilling positions of all the holes from deep to shallow in sequence based on the geological monitoring device to reveal geological data; the hydrological data includes: water level data and water temperature data, specifically:

[0044] Based on the geological monitoring device, all the boreholes are retrieved from deep to shallow in turn to reveal the geological data; if the soil layer is not revealed, the shallower positions in the borehole are continued to be tested until the geological data are revealed.

[0045] The water level is detected by using a monitoring device installed at a position in the borehole, and a relative coordinate system with the coordinates of the borehole position is established; a preset sonar sound field trajectory path is set, and a standard model is established based on the relative coordinate system to simulate that under a standard environment, multiple sonar systems emit sound waves in sequence at preset angles according to the preset sonar sound field trajectory path, and receive the sound waves at adjacent sonar systems in the sonar sound field trajectory path, so as to obtain the sound wave velocity under the standard environment, and use the sound wave velocity to obtain the corresponding water temperature data.

[0046] Based on geological data, constructing a geological model includes: projecting the geological data onto a predetermined baseline to form a two-dimensional section line, distinguishing geological layers through geological data, and constructing the boundary lines of geological layers; projecting the two-dimensional section line into three-dimensional space, and topologically reconstructing each geological layer through the boundary lines of geological layers, and synthesizing adjacent geological layers to construct a geological model.

[0047] Distinguishing geological layers through geological data and constructing the boundary lines of geological layers include: processing the drilling positions through spatial interpolation, connecting the drilling positions, and obtaining the cross-sectional relationship of the geological layers; determining the layer relationship of each geological layer based on the revealed geological data, and constructing the boundary lines of the geological layers through the cross-sectional relationship and the layer relationship.

[0048] Using hydrological data, a hydrological dynamic model is constructed, including: constructing a hydrodynamic model, and determining water movement state parameters based on the hydrodynamic model; using water level data as a background grid, and water temperature data as a drop, to obtain a discrete grid whose grid unit size changes with drop, assigning water movement state parameters to grid nodes, and constructing a hydrological dynamic model.

[0049] The method for constructing the hydrodynamic model is:

[0050]

[0051] Among them, A x , A y , A Z are the hydraulic conductivity coefficients in the x, y, and z directions, respectively. are the partial derivatives of x, y, and z respectively, H is the groundwater head, V is the dependent variable, i is the groundwater recharge, B i is the aquifer storage coefficient, and T is the time.

[0052] According to the relative position, the hydrological dynamic model is mapped to the geological model to obtain a three-dimensional hydrogeological model including:

[0053] According to the relative positions of the detection sites and the hydrological dynamic model and the geological model, the relative positions of the hydrological dynamic model and the geological model can be obtained. According to the relative positions, the hydrological dynamic model is mapped to the geological model to obtain a three-dimensional hydrogeological model.

[0054] The present invention also discloses a system for a method for dynamically constructing a three-dimensional hydrogeological model, comprising: a site acquisition module, used to acquire geographical environment information of a monitoring area, and acquire monitoring sites of the monitoring area according to the geographical environment information; a first model construction module, used to set a monitoring device in the monitoring site, acquire geological data and hydrological data, construct a geological model based on the geological data, and construct a hydrological dynamic model through the hydrological data; a second model construction module, used to determine the relative position of the geological model and the hydrological dynamic model based on the geographical location of the monitoring device, map the hydrological dynamic model to the geological model according to the relative position, and acquire a three-dimensional hydrogeological model; wherein the site acquisition module, the first model construction module and the second model construction module are connected in sequence.

[0055] The site acquisition module includes: a site acquisition submodule, which is used to obtain the geomorphic features of the monitoring area, collect and model the overall geomorphic features of the space in the monitoring area through a drone carrying GPS, so as to obtain the geographical environment information in the monitoring area, and obtain the rough geological structure data by searching the original geological and hydrogeological data, using the original geological data and the original observation holes and drilling data. Then, the field verification drilling and supplementary drilling are carried out for the original drilling area, that is, according to the geographical environment information, supplementary drilling is carried out for the geological change area, so as to obtain the monitoring sites of the monitoring area. Specifically:

[0056] Based on the geological monitoring device, all the boreholes are retrieved from deep to shallow in turn to reveal the geological data; if the soil layer is not revealed, the shallower positions in the borehole are continued to be tested until the geological data are revealed.

[0057] The water level is detected by using a monitoring device installed at a position in the borehole, and a relative coordinate system with the coordinates of the borehole position is established; a preset sonar sound field trajectory path is set, and a standard model is established based on the relative coordinate system to simulate that under a standard environment, multiple sonar systems emit sound waves in sequence at preset angles according to the preset sonar sound field trajectory path, and receive the sound waves at adjacent sonar systems in the sonar sound field trajectory path, so as to obtain the sound wave velocity under the standard environment, and use the sound wave velocity to obtain the corresponding water temperature data.

[0058] The first model building module includes: a parameter acquisition submodule, which is used to set a monitoring device at the monitoring site, and acquire geological data and hydrological data, including: setting a sonar device at the monitoring site, and acquiring hydrological data based on the sonar device; setting a geological monitoring device at the monitoring site, drilling holes at the monitoring site, and searching the drilling positions of all the holes from deep to shallow in sequence based on the geological monitoring device to reveal geological data; the hydrological data includes: water level data and water temperature data; the first model building submodule is used to project the geological data onto a predetermined baseline to form a two-dimensional section line, distinguish the geological layers through the geological data, and construct the boundary line of the geological layers; project the two-dimensional section line into three-dimensional space, and topologically reconstruct each geological layer through the boundary line of the geological layer, synthesize adjacent geological layers, and thus construct a geological model; the second model building submodule is used to construct a hydrodynamic model, and determine the water movement state parameters according to the hydrodynamic model; using the water level data as the background grid and the water temperature data as the drop, a discrete grid whose grid unit size changes with the drop is obtained, and the water movement state parameters are assigned to the grid nodes to construct a hydrological dynamic model.

[0059] The method for constructing the hydrodynamic model is:

[0060]

[0061] Among them, A x , A y , A Z are the hydraulic conductivity coefficients in the x, y, and z directions, respectively. are the partial derivatives of x, y, and z respectively, H is the groundwater head, V is the dependent variable, i is the groundwater recharge, B i is the aquifer storage coefficient, and T is the time.

[0062] The first model construction submodule includes: a boundary construction unit, which is used to distinguish geological layers through geological data. Constructing the boundary of geological layers includes: processing the drilling positions through spatial interpolation, connecting the drilling positions, and obtaining the cross-sectional relationship of the geological layers; determining the layer relationship of each geological layer based on the disclosed geological data, and constructing the boundary of the geological layers through the cross-sectional relationship and the layer relationship.

[0063] The embodiments described above are only descriptions of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for dynamically constructing a three-dimensional hydrogeological model, characterized in that: include: Acquire geographical environment information of a monitoring area, and acquire monitoring sites of the monitoring area according to the geographical environment information; A monitoring device is set at the monitoring site to obtain geological data and hydrological data, a geological model is constructed based on the geological data, and a hydrological dynamic model is constructed through the hydrological data; Using the hydrological data, constructing a hydrological dynamic model includes: Constructing a hydrodynamic model, and determining water motion state parameters according to the hydrodynamic model; Using water level data as background grid and water temperature data as drop, obtaining discrete grids whose grid unit size changes with drop, assigning water movement state parameters to grid nodes, and constructing the hydrological dynamic model; The method for constructing the hydrodynamic model is: Among them, A x , A y , A Z are the hydraulic conductivity coefficients in the x, y, and z directions, respectively. are the partial derivatives of x, y, and z respectively, H is the groundwater head, V is the dependent variable, i is the groundwater recharge, B i is the aquifer storage coefficient, T is the time; Based on the geological data, constructing a geological model includes: Based on the projection of the geological data onto a predetermined reference line, a two-dimensional section line is formed, and the geological layers are distinguished by the geological data to construct the boundary line of the geological layers; Projecting the two-dimensional section line into three-dimensional space, topologically reconstructing each geological layer through the boundary line of the geological layer, synthesizing adjacent geological layers, thereby constructing the geological model; Differentiating geological layers by using the geological data and constructing the boundary lines of the geological layers include: Processing the borehole positions by spatial interpolation, connecting the borehole positions, and obtaining the cross-sectional relationship of the geological layers; Determine the layer relationship of each geological layer according to the revealed geological data, and construct the boundary line of the geological layer through the cross-sectional relationship and the layer relationship; Based on the geographical location of the monitoring device, the relative position of the geological model and the hydrological dynamic model is determined, and according to the relative position, the hydrological dynamic model is mapped to the geological model to obtain a three-dimensional hydrogeological model.

2. The method for dynamically constructing a three-dimensional hydrogeological model according to claim 1, characterized in that: The monitoring device is set in the monitoring site to obtain geological data and hydrological data including: A sonar device is arranged in the monitoring site, and hydrological data is acquired based on the sonar device; A geological monitoring device is arranged at the monitoring site, and a hole is drilled at the monitoring site. The geological monitoring device sequentially searches for the positions of all the holes from deep to shallow to reveal the geological data.

3. The method for dynamically constructing a three-dimensional hydrogeological model according to claim 2, characterized in that: The hydrological data includes: water level data and water temperature data.

4. A system for the dynamic construction method of a three-dimensional hydrogeological model according to any one of claims 1 to 3, characterized in that: include: A site acquisition module, a first model building module, and a second model building module; The site acquisition module is used to acquire geographical environment information of the monitoring area, and acquire the monitoring site of the monitoring area according to the geographical environment information; The first model building module is used to set a monitoring device in the monitoring site, obtain geological data and hydrological data, build a geological model based on the geological data, and build a hydrological dynamic model through the hydrological data; Based on the geological data, constructing a geological model includes: Based on the projection of the geological data onto a predetermined reference line, a two-dimensional section line is formed, and the geological layers are distinguished by the geological data to construct the boundary line of the geological layers; Projecting the two-dimensional section line into three-dimensional space, topologically reconstructing each geological layer through the boundary line of the geological layer, synthesizing adjacent geological layers, thereby constructing the geological model; Differentiating geological layers by using the geological data and constructing the boundary lines of the geological layers include: Processing the borehole positions by spatial interpolation, connecting the borehole positions, and obtaining a cross-sectional relationship of the geological layer; Determine the layer relationship of each geological layer according to the revealed geological data, and construct the boundary line of the geological layer through the cross-sectional relationship and the layer relationship; The second model building module is used to determine the relative position of the geological model and the hydrological dynamic model based on the geographical location of the monitoring device, and map the hydrological dynamic model to the geological model according to the relative position to obtain a three-dimensional hydrogeological model; Wherein, the site acquisition module, the first model construction module and the second model construction module are connected in sequence.

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