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Plugging and building method suitable for remaining mine tunnel and mine underground tunnel

A technology of tunnels and mines, applied in mining equipment, mining equipment, earthwork drilling, etc., can solve problems such as emissions, and achieve the effects of preventing oxidation, inhibiting oxidation, and enhancing stability.

Active Publication Date: 2020-09-25
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the large amount of water flow brought by the mines, tunnels and mountain fissures formed by the above-mentioned mine mining, which leads to the discharge of acidic wastewater in the mines and tunnels, and the utilization of space resources, the present invention provides a method suitable for legacy mines and mine tunnels. The plugging and its construction method to inhibit the oxidation of sulfur-containing ores, and control the inflow and infiltration of water into mines and tunnels and the discharge of acidic wastewater

Method used

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  • Plugging and building method suitable for remaining mine tunnel and mine underground tunnel
  • Plugging and building method suitable for remaining mine tunnel and mine underground tunnel

Examples

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Effect test

Embodiment 1

[0041] A plug suitable for legacy mines and mine tunnels.

[0042] refer to Figures 1 to 2 , the plugging includes a side interlayer wall 1 which is parallel to the side wall of the leftover mine or mine tunnel. The side interlayer wall 1 is provided with an interlayer space, and the interlayer space is filled with hydrophobic granular materials, and the upper end It extends to the top of the leftover mine or the mine tunnel to form a closed space to prevent the loss of hydrophobic granular materials, thereby ensuring the anti-seepage function of the interlayer wall.

[0043]The above-mentioned confined space is provided with a number of spaced interlayer walls 2 from the inside to the outside to the opening, so as to divide the confined space into four segmented filling units 3 . Interlayer spaces are also provided in the interlayer wall 2, and the interlayer spaces are filled with hydrophobic granular materials. Each segmented filling unit 3 is filled with hydrophobic gra...

Embodiment 2

[0049] This embodiment is a construction method suitable for the plugging of legacy mines and mine tunnels. This method is used to build the plugging of legacy mines and mine tunnels described in Example 1, which includes the following steps:

[0050] Step 1: Clean up the gravel inside the remaining mines and mine tunnels, level the bottom of the mines and tunnels, and determine the blockage area;

[0051] Step 2: Considering the lateral water seepage of the remaining mines and mine tunnels, build side interlayer walls 1 near the side walls in the mine caves and tunnel sealing areas;

[0052] Step 3: Fill the interlayer space of the side interlayer wall 1 with hydrophobic granular materials. After filling, build the side interlayer wall 1 to the top of the left mine or mine tunnel to form a closed space to prevent hydrophobic loss of particulate matter;

[0053] Step 4: The confined space is provided with a number of spaced interlayer walls 2 from the inside to the outside to...

Embodiment 3

[0060] For mines left over from the mining of sulfur-containing copper mines, in order to prevent water and oxygen from entering the mines and achieve the purpose of blocking the sulfide oxidation path, the following methods are adopted.

[0061] Step 1: Clean up the gravel inside the left mine, level the bottom, select the tunnel area with a length of 36m close to the mine after cleaning as the plugging area, the inner width of the area is 2.5-10.0m, the width of the entrance is 6.5m, and the height of the tunnel is 1.5~2.4m;

[0062] Step 2: In consideration of the lateral seepage of groundwater, a side interlayer wall 1 is installed on the inner side wall of the mine, and an interlayer interlayer wall 2 is built in the closed area near the inner end of the tunnel. The total length of the two walls is 81m, and the side interlayer The distance between the interlayers of the wall 1 is 8cm, and the thickness of the interlayer is 15cm, which is composed of cement and sandstone; ...

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Abstract

The invention discloses a plugging and building method suitable for a remaining mine tunnel and a mine underground tunnel. The side walls of the mine tunnel and the underground tunnel are blocked through interlayer wall bodies; the inner space of the mine tunnel and the inner space of the underground tunnel are divided into a plurality of sectional type filling units; each sectional type filling unit is filled with materials, tailings and waste low-grade ore; and composite flora containing SRB and a long-acting carbon source are sprayed to the surfaces of the filling materials so as to inhibitoxidation of sulfide, reduce sulfate and precipitate heavy metal. The interlayer wall bodies are composed of parallel wall bodies and hydrophobic particle materials filled between interlayers, the upper ends of the interlayer wall bodies and the top of the tunnel are blocked through foam concrete within a certain height range, if the pressure in the tunnel is too large due to the rainy season andother reasons, the strength of a foam concrete layer is low, the top end is locally cracked to form a similar pressure relief valve, wall body cracking and collapsing caused by the too high water pressure in the tunnel can be effectively avoided, and therefore the safety of sectional type filling unit plugging is guaranteed.

Description

technical field [0001] The invention relates to the technical category of pollution control technology for leftover mine caves and mine tunnels in mining, in particular to a plugging and construction method suitable for leftover mine caves and mine tunnels, so as to solve the problem of acid waste water discharge and space for leftover mine caves and mine tunnels. Resource utilization and other issues. Background technique [0002] With the development of the economy, the demand for mineral resources continues to increase. A large number of mine caves and mine tunnels left by mining have not been effectively disposed of. A large number of abandoned ores and mining surfaces are exposed to the environment and react with oxygen, water, etc. for a long time, releasing Toxic and harmful heavy metals and acidic wastewater. [0003] Ores are often associated with a variety of elements, among which there are the most types of sulfur associated minerals, such as copper ore, lead-zin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/103E21F15/00
CPCE21F15/005E21F17/103
Inventor 吴代赦马志飞罗轶维徐宇储小东李涵
Owner NANCHANG UNIV
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