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Ecological restoration method for coal mine waste rock mountain

A technology of ecological restoration and gangue mountain, applied in land preparation methods, botanical equipment and methods, sowing, etc., can solve problems such as polluting the atmosphere and affecting the health of surrounding people, improving ventilation conditions, good application prospects, and improving soil structure stability. sexual effect

Inactive Publication Date: 2019-02-15
JIANGSU LVYAN ECOLOGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, gangue may also spontaneously combust and emit SO 2 , CO, CO 2 and other harmful gases, seriously polluting the atmosphere and affecting the health of people around

Method used

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Embodiment Construction

[0020] Below in conjunction with embodiment the present invention will be further described.

[0021] A method for ecological restoration of coal mine gangue, comprising the steps of:

[0022] (1) Reduce the slope of the gangue hill, push the gangue from top to bottom, reduce the slope to 20-30°, stabilize the slope, and set up a drainage system.

[0023] The drainage system includes several drainage ditches from top to bottom along the side slope, and diversion channels connecting the drainage ditches in series, and the diversion channels are connected to nearby rivers.

[0024] (2) Extinguish the spontaneously combusted gangue, lay loess on the surface of the spontaneously combusted gangue and compact it to isolate the external air, so that the internal air of the spontaneously combusted gangue is exhausted and extinguished. Among them, the loess covering thickness is 20-50cm.

[0025] In step (2), the spontaneous combustion gangue is extinguished, and local grouting can a...

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Abstract

The invention discloses an ecological restoration method for a coal mine waste rock mountain. The method comprises the following steps of (1) reducing the slope surface of the waste rock mountain, reducing the slope to 20-30 degrees, stabilizing the slope surface, and setting a drainage system; 2) laying loess on the surface of the spontaneous combustion waste rock mountain, and compacting to isolate an air approach, so that the internal air of pontaneous combustion waste rocks is exhausted and extinguished; (3) conducting seed-spraying on the coal mine waste rock mountain slope by using a loam-like substrate spraying method, specifically, laying a metal mesh on the surface of the compacted loess, and fixing with a bolt, spraying on the subsoil of the loam-like substrate, and spraying on the surface of the loam-like substrate; (4) conducting curing management of the slope, covering a non-woven fabric, reinforcing, watering, fertilizing, conducting pest control, replanting and conducting post-monitoring. The ecological restoration method for the coal mine waste rock mountain adopts loess cover, isolates air to prevent the spontaneous combustion of the waste rocks, and adopts a loam-like soil spraying technology to conduct plant seeding to achieve ecological restoration.

Description

technical field [0001] The invention relates to an ecological restoration method for gangue hills in coal mines, and belongs to the technical field of gangue hill management and restoration. Background technique [0002] Coal mine production has a large amount of waste rock, which generally accounts for 15%-20% of the raw coal output per month. With the development of the coal industry, the amount of waste rock continues to increase, and the accumulation volume continues to expand. According to incomplete statistics, there are more than 1,500 gangue dumps in my country's state-owned coal mines, with an annual accumulation of 3 billion tons and an area of ​​5,000 hectares. Due to dumping or natural rolling, the slope of the gangue slope has a static repose angle of 40 degrees, and the stability is extremely poor. Landslides are prone to occur when unfavorable conditions are encountered. In addition, the gangue is unevenly distributed and has a loose structure. On windy days,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01C1/00A01C7/00A01G17/00A01G20/00A01G22/00A01G24/00A01G24/10A01G24/12A01G24/20A01G24/22A01G24/23A01G24/28E02D17/20
CPCA01B79/02A01C1/00A01C7/00A01C7/008A01G17/005A01G20/00A01G22/00A01G24/00A01G24/10A01G24/12A01G24/20A01G24/22A01G24/23A01G24/28E02D17/20E02D17/202E02D2300/0034
Inventor 张波申俊伟
Owner JIANGSU LVYAN ECOLOGY TECH CO LTD
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