Coolant capable of inhibiting anchor rod drill hole collapse in red sandstone zone

A technology of red sandstone and coolant, which is applied in the field of coolant that can inhibit the disintegration of bolt holes in red sandstone areas, and can solve the problems of poor solution effect and low solubility

Inactive Publication Date: 2014-03-12
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to Ca(OH) 2 low solubility, ...

Method used

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  • Coolant capable of inhibiting anchor rod drill hole collapse in red sandstone zone
  • Coolant capable of inhibiting anchor rod drill hole collapse in red sandstone zone
  • Coolant capable of inhibiting anchor rod drill hole collapse in red sandstone zone

Examples

Experimental program
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Effect test

Embodiment 1

[0025] see figure 1 , a coolant that can inhibit the disintegration of bolt holes in red sandstone areas, its formula is: the concentration of each substance in the aqueous solution: CaCl 2 The concentration of calcium ions is 0.8mol / L, the volume fraction of ethanol is 10%, and the pH value is 10.

Embodiment 2

[0027] see figure 2 , a coolant that can inhibit the disintegration of bolt holes in red sandstone areas, its formula is: the concentration of each substance in the aqueous solution: Ca(OH) 2 The concentration of calcium ions is 0.002mol / L, the volume fraction of ethanol is 8%, and the pH value is 10.

Embodiment 3

[0029] see image 3 , a cooling liquid that can inhibit the disintegration of bolt holes in red sandstone areas, its formula is: the concentration of each substance in the aqueous solution: the volume fraction of ethanol is 10%, and the pH value is 9.

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Abstract

The invention discloses a coolant capable of inhibiting anchor rod drill hole collapse in a red sandstone zone. The formulation of the coolant is as follows: the concentrations of all materials in an aqueous solution are that the concentration of calcium ions is 0-0.8 mol/L, the volume fraction of ethyl alcohol is 8-10 percent, and the pH value is 10-14. The coolant capable of inhibiting anchor rod drill hole collapse in the red sandstone zone has a better inhibition effect on red sandstone collapse and is low in cost.

Description

technical field [0001] The invention relates to a cooling liquid, in particular to a cooling liquid capable of inhibiting the disintegration of bolt holes in red sandstone areas. Background technique [0002] The so-called "red sandstone" mainly refers to the continental red rock series from the Jurassic to the Neogene, and its lithology is mudstone, sandstone, argillaceous sandstone, sandy mudstone, siltstone, etc. ". Under natural conditions, the uniaxial compressive strength of red sandstone is low, and it is a soft rock. Because most of them are cemented with mud, they are easy to soften and disintegrate when exposed to water. Studies have shown that its disintegration mechanism is as follows: the structural unit layers of clay minerals in red sandstone, especially montmorillonite, are connected by oxygen-oxygen bonds, and the bond force is extremely weak. Molecules can easily wedge themselves into it, causing them to separate. At the same time, the trivalent aluminu...

Claims

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Application Information

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IPC IPC(8): C09K8/00
CPCC09K8/00
Inventor 朱治齐刘晓明张寨仁吴美清卢宇洁
Owner HUNAN UNIV
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