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Retraction method of equipment in fully mechanized mining face

A fully-mechanized mining face and equipment technology, applied in mining equipment, earthwork drilling, mining equipment, etc., can solve the problems of increasing the amount of construction work, increasing the investment in fire prevention and extinguishing funds, shortening the retraction time, and solving the problem of coal seam spontaneous combustion , the effect of reducing workload

Active Publication Date: 2019-08-20
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The fire prevention and extinguishing methods adopted during the equipment retraction all increase the construction work volume or increase the fire prevention capital investment to varying degrees

Method used

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  • Retraction method of equipment in fully mechanized mining face
  • Retraction method of equipment in fully mechanized mining face
  • Retraction method of equipment in fully mechanized mining face

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings. The terms "inner" and "outer" are used to refer to directions toward or away from, respectively, the geometric center of a particular component.

[0028] Figure 1a~1c It is a schematic diagram of the implementation process of the retraction method of the fully mechanized mining face equipment adopted in the specific embodiment of the present invention. like Figure 1a~1c As shown, the retraction methods of fully mechanized mining face equipment include:

[0029] (1) On the fully mechanized mini...

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Abstract

The invention discloses a method for withdrawing equipment on a fully-mechanized coal mining face. The method comprises the following steps that (1), an air return gateway and a main transportation gateway are oppositely arranged on the fully-mechanized coal mining face, and a to-be-withdrawn part is arranged between the air return gateway and the main transportation gateway; (2), the to-be-withdrawn part is separated into a plurality of sub-parts along the extending direction of the fully-mechanized coal mining face; (3) a closed wall is arranged on the fully-mechanized coal mining face, a first withdrawing region is defined by the air return gateway and the closed wall, and a second withdrawing region is defined by the main transportation gateway and the closed wall; and (4), a flame-retardant medium is introduced into the first withdrawing region and / or the second withdrawing region, the sub-parts which are located in the first withdrawing region are withdrawn through the air returngateway, and the other sub-parts which are located in the second withdrawing region are withdrawn through the main transportation gateway. According to the method for withdrawing the equipment on thefully-mechanized coal mining face, the withdrawing time is shortened, the withdrawing time is shortened to be shorter than the natural ignition period of the coal, the ignition elements of a goaf arecut off fundamentally, so that the purpose of fire prevention and extinguishment is achieved, the cost is low, and the effect is good.

Description

technical field [0001] The invention relates to the technical field of coal mining, and more particularly, relates to a method for withdrawing equipment in a fully mechanized mining face. Background technique [0002] The equipment withdrawal of the fully mechanized mining face is an important link in the coal mining process. The current withdrawal process mainly includes: one is to cut the withdrawal channel independently by the shearer, and transport the withdrawal equipment in the withdrawal channel until the evacuation Working face; one is to excavate the advanced withdrawal channel in advance, the fully mechanized mining face stops at the advanced withdrawal channel, and withdraws the equipment through the advanced withdrawal channel. No matter which retraction process is adopted, the retraction equipment is sequentially retracted in the retraction channel, and the problem faced by the sequential retraction is that it needs to pass through the goaf with fire hazard. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F13/06E21F13/08E21F17/103E21F5/08
Inventor 蒋学明薛志明赵俊杰
Owner CHNA ENERGY INVESTMENT CORP LTD
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