Discharging method for open pit coal mine with waste dump base under water immersion condition

A technology for open-pit coal mines and dumps, which is used in soil protection, filling, infrastructure engineering and other directions to achieve the effect of saving land resources

Inactive Publication Date: 2014-08-13
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still no method for the disposal of open-pit coal mine dumps under the condition that the base is flooded.

Method used

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  • Discharging method for open pit coal mine with waste dump base under water immersion condition

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] figure 1 Shown is a preferred embodiment of the present invention for the dumping method of the surface coal mine dump base under flooding conditions.

[0024] The dumping method for the base of the open-pit coal mine dump site under the condition of water immersion, the dump site base 2 includes a mud layer 201, a clay layer 202 and a bedrock 203, and materials are discharged above the mud layer 201 to form an initial Material step level 1, including the following steps:

[0025] (a) Carry out geological survey on the engineering geological conditions of the dump site base 2 under flooding conditions, measure the thickness of the silt layer 201, and confirm the dump site when the thickness of the silt layer 201 is less than 4m...

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Abstract

Provided is a discharging method for an open pit coal mine with a waste dump base under a water immersion condition. The method comprises the steps that (a) geological exploration is carried out on engineering geological conditions of the waste dump base, the thickness of silt seam is measured, and when the thickness of the silt seam is smaller than 4 m, it is determined that the waste dump base can be used for discharging; (b) the water content and the saturability of the silt seam are measured, and when the water content of the silt seam is larger than or equal to 20 percent and the saturability is larger than or equal to 98 percent, it is determined that the particle size of discharged materials is larger than or equal to 30 cm; (c) it is set that the initial material bench angle alpha is smaller than or equal to 37 degrees, and the height h ranges from 10 m to 60 m; (d) it is determined that the discharging propelling progress of the discharged materials is larger than or equal to 30 m per day; (e) it is determined that the initial material step layer solidification time is longer than or equal to three days. The method solves the problem that discharging cannot be carried out under special geological conditions, land resources are saved, and the method is economical, safe and efficient.

Description

technical field [0001] The invention relates to a discharge method for an open-pit coal mine dump, in particular to a discharge method for the base of the open-pit coal mine dump under the condition of water immersion. Background technique [0002] Most open-pit coal mine dumps are located in places with stable bases and sparsely populated surrounding areas. With the vigorous development of the open-pit coal industry, land resources are limited, and it is also required to be able to be discarded under special base conditions. However, there is still no method for the disposal of open-pit coal mine dumps under the condition that the substrate is flooded. Contents of the invention [0003] The invention provides a disposal method that effectively solves the difficult problem of disposal in an open-pit coal mine dump under the condition of a water-soaked base. [0004] The technical scheme that the present invention adopts is as follows: [0005] A method for discarding th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/18E02D3/10
Inventor 王俊李伟姚再兴艾畅周游
Owner CCTEG CHINA COAL RES INST
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