Method for treating coal gangue heaps

A technology for coal gangue and plants, which is applied in the field of coal mine geological environment management and land reclamation, can solve the problems of coal gangue occupying land, short treatment time, geological disasters, etc. Effect

Inactive Publication Date: 2020-10-16
金萍
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Problems solved by technology

[0003] The object of the present invention is to provide a method for processing coal gangue piles, which can solve the problems of a large amount of coal gangue accumulating land and causing geological disasters; can effectively avoid coal gangue pol

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Embodiment Construction

[0023] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] Such as Figure 1-2 Shown, a kind of method for processing coal gangue stockpile, comprises the steps:

[0025] S1. Select the coal mine goaf stable area as the coal gangue processing site, wherein the coal gangue processing site is the subsidence and stable goaf area caused by coal mining;

[0026] S2. Strip the topsoil from the ground by 0.5m to 1.0m, and stack it near the goaf;

[0027] S3. Spray concrete at the bottom and side of the pit in the goaf. The shotcrete is made of P.C42.5 composite cement with a mass...

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Abstract

The invention discloses a method for treating coal gangue heaps. The method for treating the coal gangue heaps includes the following steps that S1, a coal mine goaf stability zone is selected as a coal gangue treatment site; S2, 0.5 m-1.0 m of surface soil is stripped to be stacked near a goaf; S3, concrete is sprayed on the pit bottom and side of the goaf, shotcrete adopts P.C42.5 grade composite cement, and the quality ratio is 18%-25%; sand adopts medium sand, and the quality ratio is 30%-55%; gravel is hard and durable, the maximum particle size is less than 10 mm, and the quality ratio is 30%-45%; and S4, coal gangue is placed in the treated goaf, and the coal gangue backfill reaches 1.5m-1m below the ground treatment elevation. The method for treating the coal gangue heaps can solvethe problem that a large amount of coal gangue accumulates and occupies land to lead geological disasters; the coal gangue can be effectively avoided to pollute soil, the governance time is short, and the cost is low; and the method for treating the coal gangue heaps is suitable for popularization and application in the coal mine goaf, at the same time, coal gangue transportation is avoided, a lot of costs are saved, and at the same time, the spontaneous combustion of the coal gangue is avoided.

Description

technical field [0001] The invention relates to the technical field of coal mine geological environment control and land reclamation, in particular to a method for processing coal gangue piles. Background technique [0002] In the process of coal mining, when coal is developed, a large amount of coal gangue is incidentally produced, and it also leads to the collapse of the coal mining area, causing serious geological disasters. First of all, coal gangue is piled on the surface of the industrial plaza, occupying a large area of ​​land, which will not only generate dust, but also cause spontaneous combustion, seriously affecting the safety of the industrial plaza. Secondly, coal mining will lead to ground subsidence, which has brought great harm to the local government and nearby residents. In view of such defects, it is necessary for us to design a method for dealing with coal gangue piles. Contents of the invention [0003] The purpose of the present invention is to provi...

Claims

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Application Information

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IPC IPC(8): E02D3/00E02D17/18A01G9/029C04B28/04C04B18/12
CPCA01G9/0293A01G9/0295B09B3/00C04B18/12C04B28/04E02D3/00E02D17/18E02D2300/002C04B14/06C04B14/02Y02W30/91
Inventor 金萍赵目军周岸吴煜宇徐玲俊刘国谋郝萌申前进郑玉慧程宇杜朝波秦平苏兴荣韩玉杰黄烜
Owner 金萍
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