A plugging and construction method suitable for legacy mines and mine tunnels

A technology for tunnels and mines, applied in mining equipment, earthwork drilling, mining equipment, etc., can solve problems such as emissions, achieve the effects of preventing oxidation, ensuring safety, and effectively resisting stress and deformation

Active Publication Date: 2021-06-25
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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  • A plugging and construction method suitable for legacy mines and mine tunnels
  • A plugging and construction method suitable for legacy mines and mine tunnels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of plugging suitable for legacy mines and mine tunnels.

[0042] refer to Figure 1~2 , the sealing includes a side interlayer wall 1 parallel to the side wall of the left mine or mine tunnel, and a interlayer space is arranged in the side interlayer wall 1, and the interlayer space is filled with hydrophobic granular materials, and the upper end Extend to the top of the legacy mine or 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 granular materials...

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 construction method suitable for legacy mines and mine tunnels. The invention blocks the side walls of the mine cave and the tunnel through the interlayer wall, and divides the inner space of the mine cave and the tunnel into a plurality of segmented filling units, and fills each segmented filling unit with materials, tailings, and discarded low-grade Ore, the surface of these filling materials is sprayed with SRB-containing composite bacteria and long-term carbon sources to inhibit the oxidation of sulfide, reduce sulfate and precipitate heavy metals; the interlayer walls are composed of side-by-side walls and interlayers filled with hydrophobic Composed of permanent granular materials, the upper end of the interlayer wall and the roof of the cave are sealed with foam concrete within a certain height range. If the pressure in the cave is too high due to rainy seasons and other reasons, the lower strength of the foam concrete layer will make the top partially crack. In order to form a similar "pressure relief valve", it can effectively avoid the cracking and collapse of the wall caused by excessive water pressure in the cave, so as to ensure the safety of the blockage of the segmented filling unit.

Description

technical field [0001] The present invention relates to the technical category of pollution control of mine tunnels and mine tunnels left over from mining, and specifically relates to a plugging and construction method suitable for legacy mine tunnels and mine tunnels, so as to solve the problem of acid waste water discharge and space pollution caused by legacy mines 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 mines and mine tunnels left over from 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 and water for a long time. Toxic and harmful heavy metals and acidic wastewater. [0003] Ore is often associated with various elements, among which sulfur-associated ore has the most types, such as copper ore, lead-zinc ore, high...

Claims

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Application Information

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Patent Type & Authority Patents(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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