CN109828308B - Geophysical geoelectrical model test device and method - Google Patents

Abstract

The invention provides a geophysical geoelectrical model test device and a method, which comprises a plurality of layers of carriers, wherein the carriers are isolated by partition plates, each layer of carriers are communicated with a main pipeline through different flow dividing pipes, and the main pipeline is provided with a water injection port; the shunt tubes are provided with valves capable of controlling the shunt tubes to be opened or closed, and water injection filling of the medium according to different electrical methods is realized by controlling the water injection amount of the medium in each layer of the carrier.

Description

Geophysical geoelectrical model test device and method

Technical Field

The disclosure relates to a geophysical geoelectrical model test device and a method.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The electrical prospecting is a geophysical prospecting method which is used for searching different types of useful mineral deposits, finding out geological structures and solving geological problems by observing and researching the spatial distribution rule and the time characteristic of an artificial or natural electric field, an electromagnetic field or an electrochemical field according to the difference of the electromagnetic properties (such as conductivity, permeability and dielectricity) and the electrochemical characteristics of various rocks or minerals in the crust of the earth.

However, the image results obtained when the existing electrical prospecting is inverted in the actual stratum are not completely reliable and accurate in analysis.

Disclosure of Invention

In order to solve the problems, the invention provides a geophysical geoelectrical model test device and a method, and the device and the method have the advantages that through the test simulation of the actual condition of the stratum and the fact that the physical parameters and properties of the filled medium are known, when the forward operation is carried out, the obtained image can provide a better and more authoritative explanation for the inversion, and a more convenient condition is provided for the determination of the resistivity.

According to some embodiments, the following technical scheme is adopted in the disclosure:

the geophysical geoelectrical model test device comprises a plurality of layers of carriers, wherein the carriers are isolated by partition plates, each layer of carrier is communicated with a main pipeline through different flow dividing pipes, and the main pipeline is provided with a water injection port;

the shunt tubes are provided with valves capable of controlling the shunt tubes to be opened or closed, and water injection filling of the medium according to different electrical methods is realized by controlling the water injection amount of the medium in each layer of the carrier.

As a further limitation, the carrier is a pull-out carrier, and specifically comprises two symmetrically arranged lateral protection plates, the inner sides of the lateral protection plates are provided with slideways, and a pull-out drawer is arranged between the two lateral protection plates through the slideways.

As a further limitation, the shunt tube is connected to the main conduit by a connection flange.

As a further limitation, the shunt tube is provided with a plurality of bi-directional weep holes.

As a further limitation, a filter screen is arranged in the main pipeline.

As a further limitation, a sealing sleeve is arranged at the joint of the main pipeline and the shunt pipe to ensure sealing.

As a further limitation, a certain water injection space is reserved between the carrier and the layered baffle.

As a further limitation, the shunt tubes are disposed at an upper end of the respective carrier.

As a further limitation, the media is adjusted for filling according to actual needs.

The working method based on the device comprises the following steps:

selecting a proper position, and performing three-dimensional tunneling in the ground to embed the geophysical geoelectrical model test device;

filling media into the media carrier according to needs, placing the partition plate on the media carrier, and pulling out the partition plate according to whether water is needed or not when the previous layer of media is filled;

and injecting water into different media according to the proportion according to the actual water content condition requirement.

Compared with the prior art, the beneficial effect of this disclosure is:

due to various inhomogeneities of the actual stratum, data and analysis obtained during the forward inversion by the electrical method are not necessarily absolutely reliable. Through carrying out experimental simulation to the stratum actual conditions, the nature parameter of the medium that fills is known, and when carrying out forward, the image that reachs can provide better more authoritative explanation for the inversion, and the water injection governing system that this device adopted simultaneously can better get the simulation actual moisture condition, provides more convenient condition for the survey of resistivity.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a front view of the present disclosure;

FIG. 2 is a detailed view of the water injection configuration of the present disclosure;

FIG. 3 is a schematic view of the position of the layered baffle of the present disclosure;

FIG. 4 is a schematic view of a drawer media carrier of the present disclosure;

FIG. 5 is a schematic illustration of the present disclosure filled with various media for electrowinning experiments.

The specific implementation mode is as follows:

the present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

As shown in fig. 1-5, a geophysical geoelectrical model test device comprises a top layer test operation board (1), a hollow drawing type medium carrier (2), a layering baffle (3), a bottom layer anti-interference protection board (4), a drawing handle (5), a water injection port (6), a diversion hole (7), a water inlet valve (8), a filter screen (9), a two-pipe connecting sleeve (10), a flange connection (11), a water inlet pipe (12), a two-way seepage hole (13), a lateral protection board (14), three-row or multi-row water inlet device insertion holes (15), a drawing type slide way (16), an electrical method test device (17), different media (18) -21 according to actual electrical method model requirements.

The hollow drawing type medium carrier can be controlled by a drawing handle.

The hollow media carrier can be pushed into the device by means of a pull-out slide. A certain water injection space is reserved between the medium carrier and the layered baffle, and a water inlet pipe of the water injector enters a gap at the upper end of the medium through a water inlet device inserting hole to inject water. The insertion holes may be arranged in three or more rows according to actual requirements.

Firstly, a first layer of medium is filled into a medium carrier on a stratum anti-interference protection plate, the medium carrier is pushed inwards, a layering baffle (3) is covered on the medium carrier, the above layers of medium are filled, a certain space is reserved between the layering baffle (3) and the medium carrier, and the insertion and the subsequent extraction of a water inlet pipe are ensured.

Specifically, a top layer test operation board (1) is arranged, a high-strength aluminum board is adopted, and during testing, a tester and a tester are arranged on the board, so that the safety of the tester and the tester is ensured; the bottom layer anti-interference protection plate (4) is separated from the actual stratum underground through the bottom layer protection plate, and meanwhile, the plate body is made of special materials, so that the actual stratum can not influence the test when the electrical method test is carried out.

As shown in fig. 2, for water injection structure sketch map, water filling port (6) link to each other with the water pipe, the inflow of control water, and diffluence hole (7) are connected to inlet tube (12) through flange (11), and whether each layer of medium water injection passes through inlet valve (8) control, and when filter screen (9) control water flows in, the sneaking into of other impurity, two union coupling cover (10) adopt high strength rubber material, make sealing connection between the water pipe. Two-way seepage holes (13) are arranged between the water inlet pipes (12), so that the uniformity of water flow entering a medium is ensured. When water is needed to be injected, the water injector and the layering baffle are pulled out and detached after water injection is finished, so that the medium can be better coupled to simulate layering of terrains. Whether the fluid enters a certain layer of medium can be controlled by a water inlet valve; the two pipe connecting sleeves are made of high-strength rubber materials, so that the water pipes are connected in a sealing manner.

As shown in figure 3, the layered baffle (3) is arranged on the medium, after the medium is filled, the layered baffle (3) is covered, and when the upper layer medium is filled, the layered baffle (3) is pulled out through the pull handle (5) according to whether water is required to be injected or not so as to simulate the actual stratum contact coupling.

As shown in fig. 4, the hollow drawer media carrier (2) is pushed into the device by means of a drawer slide (16), and the water inlet pipes (12) are inserted above the media by means of three or more rows of injector insertion holes (15).

As shown in figure 5, different electrical method test devices (17) are placed on the top layer test operation board (1) for operation test, and different mediums (18) - (21) can be filled according to different electrical method test requirements.

The device is suitable for earth electric models of various electric methods. The medium can be adjusted and filled according to actual needs. The medium can be well coupled after the water injector and the layered baffle are finally pulled out, and the actual stratum contact condition is simulated. The size of the testing device can be changed according to actual needs, and other sizes are adjusted in original proportion.

The specific operation method comprises the following steps:

step 1: selecting a proper position, and performing three-dimensional tunneling larger than that of the test device underground;

step 2: the whole device is placed underground with a size larger than the device itself.

And step 3: and filling media into the media carrier according to needs, placing the layered baffle on the media carrier, and when the previous layer of media is filled, pulling out the layered baffle according to whether water needs to be injected or not.

And 4, step 4: and injecting water into different media according to the proportion according to the actual water content condition requirement.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.

Claims (9)

1. The utility model provides a geophysical geoelectricity model test device which characterized by: the device comprises a plurality of layers of carriers, wherein the carriers are isolated by partition plates, each layer of carrier is communicated with a main pipeline through different flow dividing pipes, and the main pipeline is provided with a water injection port;

the loader is a pull-out loader and specifically comprises two symmetrically arranged lateral protection plates, the inner sides of the lateral protection plates are provided with slideways, and a pull-out drawer is arranged between the two lateral protection plates through the slideways;

the shunt tubes are provided with valves capable of controlling the shunt tubes to be opened or closed, and water injection filling of the medium according to different electrical methods is realized by controlling the water injection amount of the medium in each layer of the carrier.

2. The geophysical-geoelectrical model test device as set forth in claim 1, wherein: the shunt tubes are connected with a main pipeline through a connecting flange.

3. The geophysical-geoelectrical model test device as set forth in claim 1, wherein: the shunt tube is provided with a plurality of bidirectional seepage holes.

4. The geophysical-geoelectrical model test device as set forth in claim 1, wherein: a filter screen is arranged in the main pipeline.

5. The geophysical-geoelectrical model test device as set forth in claim 1, wherein: and a sealing sleeve is arranged at the joint of the main pipeline and the shunt pipe to ensure sealing.

6. The geophysical-geoelectrical model test device as set forth in claim 1, wherein: and a certain water injection space is reserved between the carrier and the layered baffle.

7. The geophysical-geoelectrical model test device as set forth in claim 1, wherein: the shunt tubes are arranged at the upper ends of the corresponding carriers.

8. The geophysical-geoelectrical model test device as set forth in claim 1, wherein: the medium is adjusted and filled according to actual needs.

9. Method of operation of a device according to any of claims 1-8, characterized in that: the method comprises the following steps:

selecting a proper position, and performing three-dimensional tunneling in the ground to embed the geophysical geoelectrical model test device;

filling media into the media carrier according to needs, placing the partition plate on the media carrier, and pulling out the partition plate according to whether water is needed or not when the previous layer of media is filled;

and injecting water into different media according to the proportion according to the actual water content condition requirement.

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