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Underground karst cave model preparation method

A geological model and karst cave technology, which is applied in the field of simulation experiment technology and underground karst cave model preparation, can solve the problems of not being able to simulate the geological environment of karst caves well, and achieve the effects of fast shaping, improved accuracy, and stable effects

Active Publication Date: 2021-03-19
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to propose a method for preparing a novel model experiment karst cave in order to solve the problem that the geological environment of the karst cave cannot be well simulated in the prior art

Method used

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  • Underground karst cave model preparation method
  • Underground karst cave model preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: as Figure 1 to Figure 10 Shown, a kind of underground karst cave model preparation method comprises the following steps:

[0054]Step 1. Determine the location and shape of the karst cave according to the site engineering conditions through site survey and geological data;

[0055] Step 2, such as figure 1 As shown, the mold 11 is made according to the shape of the cave, and the magnetorheological material 3 and the conductive coil 1 are put into the mold 11. The wire 2 is extended to the outside of the mold 11 and connected to the voltage regulator 9, and the conductive coil 1 is energized through the voltage regulator 9, and the set voltage is supplied to generate a magnetic field, so that the magnetorheological material 3 is solidified and formed, and the mold 11 is removed to obtain a cave mandrel 10, such as figure 2 As shown, in the subsequent pouring process, the conductive coil 1 is always kept in an energized state, and the cave mandrel 10 ca...

Embodiment 2

[0066] Embodiment 2: Other steps are the same as in Embodiment 1, the difference is that in step 3.2, before the karst cave mandrel 10 is installed, a protective layer is set on the conductive coil 1 and the wire 2 outside the karst cave mandrel 10, and the conductive coil 1 It is a filament coil. In step 4, after the conduction coil 1 is powered off, the conduction coil 1 is directly pulled out from the underground cave model (the spring-like conduction coil 1 becomes a filament after being pulled out), and the flow Physically, the magnetorheological material 3 also flows out of the hole of the conductive coil 1. Since the conductive coil 1 is very small, the hole left on the underground cave model after the conductive coil 1 is pulled out is very small, which is much smaller than that prepared by other methods. The holes left by the cave model basically have no effect on the structural force of the cave model.

[0067] Specifically, the protective layer is a liquid protectiv...

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Abstract

The invention discloses an underground karst cave model preparation method, which comprises the following steps: determining the position and shape of a karst cave according to field engineering conditions through field investigation and geological data; then manufacturing a mold according to the shape of the karst cave, putting the magneto-rheological material and the conductive coil into the mold, electrifying the conductive coil to generate a magnetic field, solidifying and forming the magneto-rheological material, dismounting the mold, and obtaining a karst cave core mold; then selecting similar materials according to geological data to pour a geological model, pre-burying a karst cave core mold in the geological model in the pouring process, and keeping a conductive coil in the karstcave core mold to be electrified all the time in the process; and finally, powering off the conductive coil in the karst cave core mold, enabling the magnetic field to disappear, recovering the magneto-rheological material into fluid, forming the karst cave, and thus completing preparation of the underground karst cave model. Materials used in the method are easy to obtain, the cost is low, operation is easy in the preparation process, no damage is caused to the structure in the dissolution process of the karst cave core mold, and the prepared underground karst cave model is good in simulationeffect.

Description

technical field [0001] The invention belongs to the field of civil engineering and construction engineering, and relates to a simulation experiment technology, in particular to a method for preparing an underground karst cave model, which can be used in laboratories, construction sites, schools, etc. that require karst cave research to improve the authenticity of karst caves and enhance the experimental data of karst caves accuracy. Background technique [0002] The existing cave shaping methods mainly include filling foam inside and then soaking with alcohol or injecting alcohol or placing ice cubes inside to melt. This method has the following disadvantages: [0003] (1) The condition of the internal cave formation is unknown, it is impossible to accurately judge the foam dissolution and it is difficult to observe the formation effect of the cave. [0004] (2) Compared with the simulated rock formation, the strength of the foam is very low, and it is easy to be damaged du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/36
CPCG01N1/28G01N1/36G01N2001/366
Inventor 肖衡林李晨旭刘永莉马强熊豪文席铭洋徐静刘一鸣
Owner HUBEI UNIV OF TECH
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