CN115075877A

CN115075877A - Method for preventing large block ice from forming on mine shaft wall

Info

Publication number: CN115075877A
Application number: CN202210776172.2A
Authority: CN
Inventors: 邵鹏; 闫刚; 李志海; 庄晓腾; 王亚伟; 董国强; 付佳杰; 杨永杰; 孙铭阳; 张伟
Original assignee: Zhaojin Mining Industry Co ltd
Current assignee: Zhaojin Mining Industry Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-20

Abstract

The invention relates to the field of mineral exploitation, and discloses a method for preventing a mine shaft wall from blocking ice. Therefore, the method for preventing the large block ice from forming on the mine shaft wall is simple in construction, and effectively solves the problem that the large block ice forms on the mine shaft wall in winter.

Description

Method for preventing large block ice from forming on mine shaft wall

Technical Field

The invention relates to the field of mineral exploitation, in particular to a method for preventing a mine shaft wall from blocking large blocks of ice.

Background

Because the mineral products are all in the very deep place in the underground, in order to exploit the mineral products, need excavate the mine roadway as the passageway from ground to mining area, the mine roadway mainly includes: vertical tunnels, horizontal tunnels, inclined tunnels and chambers. The vertical roadway is a through-ground channel cut in the stratum, and is also called a vertical shaft or a vertical shaft, and the vertical shaft is divided into a main vertical shaft, an auxiliary vertical shaft, an air shaft, a drainage shaft, a filling shaft and the like according to the functions of the vertical shaft: in order to ensure the safety of workers in an underground mine, a mine system needs to be provided with a special ventilation system, namely fresh air is conveyed into the mine from the ground, the ground temperature is reduced in winter, in the process of conveying the air into the mine through a ventilation vertical shaft, the ventilation shaft is in a low-temperature ventilation state, water sprayed on the inner wall of a shaft, condensed water on a derrick and water brought into the shaft from the underground can be condensed into ice blocks on the inner wall of the shaft and the derrick under the action of the low-temperature air, the ice blocks are larger, even the operation of a cage and a skip in the shaft is blocked, workers need to manually discharge ice in the shaft every day, the time is consumed for two hours every day, a lifting machine is occupied in the ice discharging process, the normal operation cannot be performed, the ice discharging operation is difficult and high in danger, the falling of the ice blocks discharged in the operation process easily damages equipment, switches and cables in the shaft, affecting production, so a method is needed for solving the problem of icing on the well wall.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the method for preventing the large ice blocks from forming on the well wall of the mine solves the problem that the large ice blocks form on the existing well wall.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a method for preventing the large block ice from being formed on the wall of mine well features that a hydrophobic substance is applied to the wall of well to form a protecting layer on the wall of well.

Compared with the prior art, the invention has the following technical effects:

the hydrophobic property of the water-retaining wall makes the water difficult to accumulate on the surface, and once the water forms small water drops locally, the water drops fall off automatically under the influence of gravity, thereby avoiding forming large ice blocks on the well wall.

On the basis of the technical scheme, the invention can be further improved as follows.

Preferably, the hydrophobic substance is a gel-like anticorrosive paint which is convenient for construction.

Preferably, the hydrophobic substance is a lanolin-based antiseptic gel, and has strong permeability and drainage property and good effect.

Preferably, the hydrophobic substance is sprayed on the wall of the well between 10 and 100 meters underground. The water content on the well wall within 10 meters is low, and the temperature of the air below 100 meters is raised so as not to freeze.

Preferably, the hydrophobic substance is coated on the well wall, the well wall is not a smooth surface, and the coating method is convenient to construct.

Detailed Description

The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.

An anti-blocking method for preventing the wall of a mine shaft from being frozen into large blocks is characterized in that a full-function heavy-duty anticorrosion gel of Futefei M-717# -02 produced by the chemical company of Ewing-down shaft of a certain mining area is sprayed on the wall of the shaft within the range of 20-100 meters under the shaft, so that a protective layer with the thickness of 2mm is formed on the wall of the shaft. The M-717# -02 can adhere to the well wall by virtue of the oiliness of the gel, the gel is not easy to fall off, the hydrophobic property of the gel makes the water difficult to accumulate on the surface of the gel, once the water forms small water drops locally, the water falls off automatically under the influence of gravity, and then a large ice block is prevented from being formed on the well wall. Through practical tests, after the M-717# -02 spray coating can fully prevent the corrosion, the ice blocks condensed in the shaft only remain on the surface, the volume is small, and no large ice blocks are seen.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The method is characterized in that a hydrophobic substance is constructed on the well wall to form a protective layer attached to the well wall.

2. The method of claim 1, wherein the hydrophobic material is a gel-like anti-corrosive coating.

3. The method for preventing the borehole wall from blocking the massive ice of the mine shaft as claimed in claim 2, wherein the hydrophobic substance is a lanolin-based antiseptic gel.

4. The method for preventing the mine shaft wall from blocking the ice from the large block according to any one of claims 1 to 3, wherein the hydrophobic substance is sprayed on the shaft wall between 10 and 100 meters underground.

5. The method for preventing the mine shaft wall from blocking the massive ice according to any one of claims 1 to 3, wherein the hydrophobic substance is constructed on the shaft wall in a spraying mode.

6. The method for preventing the mine shaft wall from blocking the ice block as claimed in any one of claims 1 to 3, wherein the thickness of the protective layer formed by the hydrophobic substance is 0.1 to 1 cm.

7. The method for preventing the mine shaft wall from blocking the ice block as claimed in any one of claims 1 to 3, wherein the hydrophobic substance is applied to the shaft wall by spraying.