Mining face end and crossheading advancing self-moving supporting method

Abstract

The invention discloses a mining face end and crossheading advancing self-moving supporting method. According to the method, forepoling supports are adopted, wherein each forepoling support comprisesa top beam, a lifting seat, a base, a stand column, a pushing jack and a deviation rectifying jack, and each top beam is of an integral box type structure. The supporting method comprises the steps that a plurality of forepoling supports and end supports are connected in series through the pushing jacks to form grouped supports arranged in working face ends and forepoling crossheadings, before working face stoping advancing, the pushing jacks between the supports are kept in an extending state, and the grouped supports move by the corresponding number of supports from back to front every timea working face is pushed forwards by one time. According to the supporting method, the top beams of an integral box type structure are adopted for supporting top plates, supporting safety is improved,two adjacent forepoling supports can move transversely with the help of force, and move support by support from back to front along with advancing of the working face, the supporting length is shortened along with advancing of the working face, production class frame shrinking and maintenance class frame stretching are achieved, and the telescopic length of the support groups is determined according to the daily advancing degree of the working face.

Description

technical field [0001] The invention relates to the technical field of coal mine recovery, in particular to a mining face end and an advance self-moving support method along a groove. Background technique [0002] The hydraulic support is a structure used to control the mine pressure of the coal mining face. The advanced pressure area of ​​the two lanes of the coal mining face needs to be strengthened. At present, the manual erection of single hydraulic props and steel beams is mainly used to carry out "one beam and two columns". "Lifting shed support, the row spacing of shed lifting support is generally 800mm, and the support range is 20m along the roadway. As the working face advances, the end shed lifting beams need to be manually removed and moved to the front for re-erecting, and the labor intensity of the workers is high. , The working environment is poor. [0003] CN210460722U discloses a kind of coal mine roadway mobile support bracket, which adopts the combination ...

AI Technical Summary

Problems solved by technology

[0002] The hydraulic support is a structure used to control the mine pressure of the coal mining face. The advanced pressure area of ​​the two lanes of the coal mining face needs to be strengthened. At present, the manual erection of single hydraulic props and steel beams is mainly used to carry out "one beam and two columns". "Lifting shed support, the row spacing of shed lifting support is generally 800mm, and the support range is 20m along the roadway. As the working face advances, the end shed lifting beams need to be manually removed and moved to the front for re-erecting, and the labor intensity of the workers is high. , Poor working environment

[0003] CN210460722U discloses a kind of coal mine roadway mobile support bracket, which adopts the combination of A and B frame types to form a whole frame that moves alternately.

[0004] CN103061792B discloses a car-type hydraulic support for coal mines. In order to improve the destructive repeated support of the roof, the top of the support is set to be supported by a horizontal jack between two roof beams, and the inner telescopic beam is used to strengthen stability, so that the mobile The latter bracket is reduced in size so that it can pass through the internal space of the previous bracket for displacement, but the frame shape is still complicated, the contact with the roof is insufficient, and there are problems of support gaps and safety loopholes

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