Prefabricated tunnel geological prediction geophysical test model test device and method

Abstract

The present invention discloses an assembled tunnel geological prediction geophysical test model test device and method, including establishing a virtual geological body model according to the geological conditions of the tunnel and the surrounding area of ​​the tunnel in the geophysical test model test plan, the virtual geological body model including a plurality of geological body model prefabricated blocks established according to the shapes, sizes and quantities of different geological conditions, the plurality of geological body model prefabricated blocks are assembled and connected, and cracks between the prefabricated blocks are established at the contact surfaces of the two geological body model prefabricated blocks according to the random cracks in the geophysical test model test plan, the plan can be adjusted quickly and flexibly, the needs of geophysical testing under different geological conditions can be quickly met, and the work efficiency of the geophysical testing can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of model tests for tunnel geological prediction, and in particular to an assembled tunnel geological prediction geophysical exploration test model test device and method. Background Art

[0002] Tunnel geological prediction is an essential part of tunnel construction. Tunnel construction must carry out advanced tunnel geological prediction to ensure tunnel construction safety and avoid or reduce the risk of tunnel geological disasters to the greatest extent. Geophysical exploration is an important and common geological method for tunnel geological prediction. As an important method of geological prediction, geophysical exploration is difficult to accurately judge tunnel geological problems due to its multi-solution nature. It is necessary to fully understand the test parameters and interpretation standards of various geophysical exploration methods to improve the accuracy of geophysical exploration tests and the reliability of predictions. In addition, it is also necessary to test and evaluate the test effects of various geophysical exploration methods and the sensitivity to different types of geological problems to provide a basis for the selection of geological prediction methods and the formulation of forecast geophysical exploration work plans.

[0003] The existing traditional methods mainly adopt two methods: field testing of actual tunnel projects and indoor model testing. A large number of actual tunnel projects are used for field testing in the field or model testing is performed using tunnel physical models designed and manufactured indoors. Based on the test results, the interpretation standards of various geophysical methods and the reasonable values ​​of related test parameters are analyzed, and the prediction effects of various geophysical methods and their sensitivity to different types of geological problems are evaluated.

[0004] The existing two methods of using actual tunnel engineering field testing and indoor model testing both have obvious defects. Among them, using actual tunnel engineering field testing to analyze test parameters and interpretation standards, as well as to evaluate the forecast effect and sensitivity to different types of geological problems, a large number of actual engineering field tests must be carried out to obtain different test data in order to make accurate analysis and reasonable evaluation. Tunnel engineering is often located in remote mountainous areas, and testing a large number of different projects is often time-consuming, labor-intensive and costly; when using indoor model testing, the indoor model test device is mostly a special fixed model of a certain engineering fixed geological condition of the model, which makes it difficult to flexibly adjust and change the geological conditions to meet the conditions of different geological conditions of the model, and it is impossible to complete the needs of geophysical exploration tests under a large number of different geological conditions. If the model and other different geological conditions of the model are to be adjusted, it must be remade and rebuilt. The construction of model test devices for different geological conditions is also time-consuming, labor-intensive and costly. Summary of the invention

[0005] The purpose of the present invention is to provide an assembled tunnel geological prediction geophysical test model test device and method, which aims to solve the technical problems in the prior art that the model uses a single model that cannot be flexibly adjusted and data exploration is inconvenient.

[0006] The present invention is achieved through the following technical solutions:

[0007] The processing method of the assembled tunnel geological prediction geophysical exploration test model comprises the following steps:

[0008] S1: establishing a virtual geological body model according to the geological conditions of the tunnel and its surroundings, and then segmenting the virtual geological body model according to different geological conditions, and determining the shapes, sizes and quantities of multiple different geological body model prefabricated blocks after segmentation;

[0009] S2: selecting materials corresponding to the geological conditions for the multiple segmented geological body model prefabricated blocks according to the different geological conditions they correspond to, and processing and manufacturing them into multiple geological body model prefabricated blocks of different geological types;

[0010] S3: Assemble and connect the prepared geological body model prefabricated blocks of different geological types according to the geophysical exploration test plan;

[0011] The connection between the prefabricated blocks of the geological body models of different geological types forms cracks between the prefabricated blocks;

[0012] The cracks are filled with gypsum;

[0013] S4: After the gypsum has sufficient strength, the currently assembled virtual geological body model is subjected to geophysical testing according to the geophysical testing plan.

[0014] The present invention also provides a test method for a prefabricated tunnel geological prediction geophysical exploration test model, comprising the following steps:

[0015] S1: Establishing a geological model: establishing a virtual geological model according to the geological conditions of the tunnel and its surroundings, segmenting the virtual geological model according to different geological conditions, and determining the shapes, sizes and quantities of the prefabricated blocks of the multiple different geological models after segmentation;

[0016] Selecting materials corresponding to the geological conditions for the multiple segmented geological body model prefabricated blocks according to the different geological conditions they correspond to, and processing and manufacturing them into multiple geological body model prefabricated blocks of different geological types;

[0017] The prefabricated blocks of geological body models of different geological types are assembled and connected according to the geophysical test plan;

[0018] The connection between the prefabricated blocks of the geological body models of different geological types forms cracks between the prefabricated blocks;

[0019] The cracks are filled with gypsum;

[0020] S2: Geophysical testing of geological body model; after the gypsum has sufficient strength, the currently assembled virtual geological body model is subjected to geophysical testing according to the geophysical testing plan;

[0021] S3: dismantling the geological model; after the test is completed, the plurality of different types of geological model prefabricated blocks are dismantled, and the dismantled different types of geological model prefabricated blocks can be reused;

[0022] After disassembling, different types of geological model prefabricated blocks are adjusted in relative positions according to different geophysical test schemes or some of the geological model prefabricated blocks are replaced, and then the above steps 1) and 2) are repeated to complete the geophysical test of the geophysical test scheme for the geological conditions of different tunnels.

[0023] This scheme utilizes the changing method of the position and combination relationship between the geological model prefabricated blocks and the replacement of some geological model prefabricated blocks to simulate different geophysical test models under different geological conditions. The test scheme can be adjusted quickly and flexibly, and the needs of geophysical testing under different geological conditions can be quickly met, which can improve the work efficiency of geophysical testing.

[0024] The present invention also provides an assembled tunnel geological prediction geophysical exploration test model test device, including establishing a virtual geological body model according to the geological conditions of the tunnel and the surrounding area of ​​the tunnel;

[0025] The virtual geological body model includes a plurality of geological body model prefabricated blocks established according to shapes, sizes and quantities of different geological conditions;

[0026] The plurality of geological body model prefabricated blocks of different geological types are assembled and connected, and cracks between the prefabricated blocks are formed at the connection points of the geological body model prefabricated blocks of different geological types.

[0027] Furthermore, the geological body model prefabricated blocks include soft rock geological body model prefabricated blocks, cavity and groundwater geological body model prefabricated blocks, fault and joint fissure model prefabricated blocks, hard rock geological body model prefabricated blocks and tunnel structure model prefabricated blocks.

[0028] Furthermore, the material of the soft rock geological body model prefabricated block is soft lime or hydrous soil or semi-hydrous soil; the material of the hard rock geological body model prefabricated block is high-strength concrete; and the material of the tunnel structure model prefabricated block is cast concrete.

[0029] This solution adopts processing materials corresponding to different geological conditions to replace them, which can reduce the production cost of geophysical testing and improve the practicability of geophysical testing.

[0030] Furthermore, the cracks between the prefabricated blocks are filled with gypsum.

[0031] Furthermore, the prefabricated blocks of the tunnel structure model are arranged at the front end of the test device according to the position distribution of the actual project;

[0032] The rear end of the tunnel structure model prefabricated block is provided with the hard rock geological body model prefabricated block, the fault and joint fissure model prefabricated block, the cavity and groundwater geological body model prefabricated block and the soft rock geological body model prefabricated block in sequence;

[0033] The width of the cracks between the tunnel structure model prefabricated block and the hard rock geological body model prefabricated block, the hard rock geological body model prefabricated block and the fault and joint fissure model prefabricated block, the fault and joint fissure model prefabricated block and the cavity and groundwater geological body model prefabricated block, and the cavity and groundwater geological body model prefabricated block and the soft rock geological body model prefabricated block are the same as the random crack width in actual engineering.

[0034] Furthermore, the tunnel structure model prefabricated block is a prefabricated block with a hollowed-out section of a certain length.

[0035] Furthermore, the cavity and groundwater geological body model prefabricated block is a prefabricated block having a simulated cavity and simulated groundwater.

[0036] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0037] 1. This scheme utilizes the changing method of the position and combination relationship between the geological model prefabricated blocks and the replacement of some geological model prefabricated blocks to simulate different geophysical test models under different geological conditions. The test scheme can quickly and flexibly adjust the scheme, quickly meet the needs of geophysical testing under different geological conditions, and improve the work efficiency of geophysical testing.

[0038] 2. This solution also provides a model test device for indoor simulation of different geological conditions, avoiding the high entry and exit fees of on-site testing. At the same time, the prefabricated blocks of local geological body models are used to replace specially made fixed models, saving a lot of cost and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0040] Figure 1 It is a schematic diagram of the structure of the present invention.

[0041] Figure 2This is a schematic diagram of the assembly combination of prefabricated blocks of the geological model.

[0042] Figure 3 This is a schematic diagram of the prefabricated blocks of the tunnel structure model.

[0043] Reference numerals and corresponding component names:

[0044] 1-virtual geological model; 11-geological model prefabricated block; 111-soft rock geological model prefabricated block; 112-cavity and groundwater geological model prefabricated block; 1121-simulated cavity; 1122-simulated groundwater; 113-fault and joint fissure model prefabricated block; 114-hard rock geological model prefabricated block; 115-tunnel structure model prefabricated block; 1151-hollow section; 2-cracks between prefabricated blocks. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0046] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that these specific details are not necessarily employed to practice the present invention. In other instances, well-known structures, circuits, materials, or methods are not specifically described in order to avoid obscuring the present invention.

[0047] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] [Example 1]

[0049] like Figure 1 , Figure 2 , Figure 3 As shown, the processing method of the assembled tunnel geological prediction geophysical exploration test model includes the following steps:

[0050] S1: establishing a virtual geological body model 1 according to the geological conditions of the tunnel and its surroundings, and then segmenting the virtual geological body model according to different geological conditions, and determining the shapes, sizes and quantities of a plurality of different geological body model prefabricated blocks 11 after segmentation;

[0051] S2: Selecting materials corresponding to the geological conditions for the multiple segmented geological body model prefabricated blocks 11 according to the different geological conditions they correspond to, and processing and manufacturing them into multiple geological body model prefabricated blocks 11 of different geological types;

[0052] S3: Assembling and connecting the prepared geological body model prefabricated blocks 11 of different geological types according to the geophysical exploration test plan;

[0053] At the connection between the prefabricated blocks 11 of the geological body model of different geological types, a crack 2 between the prefabricated blocks is formed;

[0054] Crack 2 is filled with plaster;

[0055] S4: After the gypsum has sufficient strength, a geophysical test is performed on the currently assembled virtual geological body model 1 according to the geophysical test plan.

[0056] The present invention also provides a test method for a prefabricated tunnel geological prediction geophysical exploration test model, comprising the following steps:

[0057] S1: Establishing a geological model; establishing a virtual geological model 1 according to the geological conditions of the tunnel and its surroundings, and then segmenting the virtual geological model 1 according to different geological conditions, and determining the shapes, sizes and quantities of the multiple different geological model prefabricated blocks 11 after segmentation;

[0058] Select materials corresponding to the geological conditions for the multiple segmented geological body model prefabricated blocks 11 according to the different geological conditions they correspond to, and process and manufacture them into multiple geological body model prefabricated blocks 11 of different geological types;

[0059] The prepared geological body model prefabricated blocks 11 of different geological types are assembled and connected according to the geophysical prospecting test plan;

[0060] At the connection between the prefabricated blocks 11 of the geological body model of different geological types, a crack 2 between the prefabricated blocks is formed;

[0061] Crack 2 is filled with plaster;

[0062] S2: Geophysical testing of geological body model; after the gypsum has sufficient strength, the currently assembled virtual geological body model 1 is subjected to geophysical testing according to the geophysical testing test plan;

[0063] S3: dismantling the geological model; after the test is completed, the plurality of different types of geological model prefabricated blocks 11 are dismantled, and the dismantled different types of geological model prefabricated blocks 11 can be reused;

[0064] After disassembly, different types of geological model prefabricated blocks 11 are adjusted in relative position according to different geophysical test schemes, or some of the geological model prefabricated blocks 11 are replaced, and then the above steps 1) and 2) are repeated to complete the geophysical test of the geophysical test scheme for the geological conditions of different tunnels.

[0065] This scheme utilizes the changing method of the position and combination relationship between the geological model prefabricated blocks and the replacement of some geological model prefabricated blocks to simulate different geophysical test models under different geological conditions. The test scheme can be adjusted quickly and flexibly, and the needs of geophysical testing under different geological conditions can be quickly met, which can improve the work efficiency of geophysical testing.

[0066] The present invention also provides an assembled tunnel geological prediction geophysical exploration test model test device, including establishing a virtual geological body model 1 according to the geological conditions of the tunnel and the surrounding area of ​​the tunnel;

[0067] The virtual geological body model 1 includes a plurality of geological body model prefabricated blocks 11 established in shapes, sizes and quantities according to different geological conditions;

[0068] A plurality of geological body model prefabricated blocks 11 of different geological types are assembled and connected, and cracks 2 between prefabricated blocks are formed at the connection points of the geological body model prefabricated blocks 11 of different geological types.

[0069] Furthermore, the geological body model prefabricated block 11 includes a soft rock geological body model prefabricated block 111 , a cavity and groundwater geological body model prefabricated block 112 , a fault and joint fissure model prefabricated block 113 , a hard rock geological body model prefabricated block 114 and a tunnel structure model prefabricated block 115 .

[0070] Furthermore, the material of the soft rock geological body model prefabricated block 111 is soft lime or hydrous soil or semi-hydrous soil; the hard rock geological body model prefabricated block 114 is made of high-strength concrete; and the material of the tunnel structure model prefabricated block 115 is cast concrete.

[0071] This solution adopts processing materials corresponding to different geological conditions to replace them, which can reduce the production cost of geophysical testing and improve the practicability of geophysical testing.

[0072] Furthermore, the cracks 2 between the prefabricated blocks are filled with gypsum.

[0073] Furthermore, the tunnel structure model prefabricated block 115 is arranged at the front end of the test device according to the position distribution of the actual project;

[0074] The rear end of the tunnel structure model prefabricated block 115 is provided with a hard rock geological body model prefabricated block 114, a fault and joint fissure model prefabricated block 113, a cavity and groundwater geological body model prefabricated block 112 and a soft rock geological body model prefabricated block 111 in sequence;

[0075] The setting width of the cracks 2 between the tunnel structure model prefabricated block 115 and the hard rock geological body model prefabricated block 114, the hard rock geological body model prefabricated block 114 and the fault and joint fissure model prefabricated block 113, the fault and joint fissure model prefabricated block 113 and the cavity and groundwater geological body model prefabricated block 112, and the cavity and groundwater geological body model prefabricated block 112 and the soft rock geological body model prefabricated block 111 is the same as the random crack width in actual engineering.

[0076] Furthermore, the tunnel structure model prefabricated block 115 is a prefabricated block having a hollowed-out section 1151 of a certain length.

[0077] Furthermore, the cavity and groundwater geological body model prefabricated block 112 is a prefabricated block having a simulated cavity 1121 and simulated groundwater 1122 .

[0078] The geological conditions in the present invention include different geological conditions such as soft rock, hard rock, faults, joints and fissures, cavities, groundwater, etc.

[0079] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The test method of the geophysical test model for geological prediction of prefabricated tunnels is characterized by: The following steps are involved: S1: Establishing a geological model; establishing a virtual geological model (1) according to the geological conditions of the tunnel and its surroundings, and then segmenting the virtual geological model (1) according to different geological conditions, and determining the shapes, sizes and quantities of a plurality of different geological model prefabricated blocks (11) after segmentation; Selecting materials corresponding to the geological conditions for the multiple segmented geological body model prefabricated blocks (11) according to the different geological conditions they correspond to, and processing and manufacturing them into multiple geological body model prefabricated blocks (11) of different geological types; The prepared geological body model prefabricated blocks (11) of different geological types are assembled and connected according to the geophysical prospecting test plan; The connection between the geological body model prefabricated blocks (11) of different geological types forms a crack (2) between the prefabricated blocks; The crack (2) is filled with gypsum; S2: Geophysical testing of geological model; after the gypsum has reached sufficient strength, geophysical testing is performed on the currently assembled virtual geological model (1) according to the geophysical testing test plan; S3: dismantling the geological model; after the test is completed, the plurality of different types of geological model prefabricated blocks (11) are dismantled, and the dismantled different types of geological model prefabricated blocks (11) can be reused; After the different types of disassembled geological model prefabricated blocks (11) are adjusted in relative position according to different geophysical test schemes or some of the geological model prefabricated blocks (11) are replaced, the above steps 1) and 2) are repeated to complete the geophysical test of the geophysical test schemes for the geological conditions of different tunnels.

2. A test device based on the test method of the assembled tunnel geological prediction geophysical test model according to claim 1, characterized in that: The method includes establishing a virtual geological model according to the geological conditions of the tunnel and its surroundings (1); The virtual geological body model (1) comprises a plurality of geological body model prefabricated blocks (11) established in shape, size and quantity according to different geological conditions; The plurality of geological body model prefabricated blocks (11) of different geological types are assembled and connected, and cracks (2) between the prefabricated blocks are formed at the connection points between the geological body model prefabricated blocks (11) of different geological types.

3. The assembled tunnel geological prediction geophysical exploration test model test device according to claim 2 is characterized in that: The geological body model prefabricated blocks (11) include soft rock geological body model prefabricated blocks (111), cavity and groundwater geological body model prefabricated blocks (112), fault and joint fissure model prefabricated blocks (113), hard rock geological body model prefabricated blocks (114) and tunnel structure model prefabricated blocks (115).

4. The assembled tunnel geological prediction geophysical exploration test model test device according to claim 3 is characterized in that: The soft rock geological body model prefabricated block (111) is made of soft lime or hydrous soil or semi-hydrous soil; the hard rock geological body model prefabricated block (114) is made of high-strength concrete; and the tunnel structure model prefabricated block (115) is made of concrete casting.

5. The assembled tunnel geological prediction geophysical exploration test model test device according to claim 2 is characterized in that: The cracks (2) between the prefabricated blocks are filled with gypsum.

6. The assembled tunnel geological prediction geophysical exploration test model test device according to claim 3 is characterized in that: The tunnel structure model prefabricated block (115) is arranged at the front end of the test device according to the position distribution of the actual project; The rear end of the tunnel structure model prefabricated block (115) is provided with the hard rock geological body model prefabricated block (114), the fault and joint fissure model prefabricated block (113), the cavity and groundwater geological body model prefabricated block (112) and the soft rock geological body model prefabricated block (111) in sequence; The width of the cracks (2) between the tunnel structure model prefabricated block (115) and the hard rock geological body model prefabricated block (114), between the hard rock geological body model prefabricated block (114) and the fault and joint fissure model prefabricated block (113), between the fault and joint fissure model prefabricated block (113) and the cavity and groundwater geological body model prefabricated block (112), and between the cavity and groundwater geological body model prefabricated block (112) and the soft rock geological body model prefabricated block (111) is the same as the random crack width in actual engineering.

7. The assembled tunnel geological prediction geophysical exploration test model test device according to claim 3 is characterized in that: The tunnel structure model prefabricated block (115) is a prefabricated block having a hollowed-out section (1151) of a certain length.

8. The assembled tunnel geological prediction geophysical exploration test model test device according to claim 3 is characterized in that: The cavity and groundwater geological body model prefabricated block (112) is a prefabricated block having a simulated cavity (1121) and simulated groundwater (1122).

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