Novel hydraulic support at end part of fully mechanized caving face

Abstract

The invention relates to a novel hydraulic support at the end part of a fully mechanized caving face, which is suitable for top coal recovery in an end region of a fully mechanized top coal caving face and support and maintenance of a laneway and a space at the end part. The main research and development contents comprise a high-level low-rake symmetrical frame type end support on the fully mechanized caving face and a high-level low-rake main and auxiliary frame type in-end support. A symmetrical runner oblique scraping plate type coal raking system is arranged at a low-level coal caving port of an auxiliary frame; and a front-and-back split type groove-shaped coal caving system is arranged on a top beam of the auxiliary frame. A symmetrical frame simultaneously has the effects of improving the stability of the support and enhancing the support and the maintenance of the space at the end part. According to the method disclosed by the invention, production efficiency and recovery rate on the fully mechanized caving face can be effectively improved, a fully mechanized caving mining technology is perfected, and significant economic benefits can be produced, so that the method has extensive practicality and popularization prospects.

Description

technical field [0001] The invention relates to a hydraulic support for the end area of ​​a comprehensive mechanized top caving mining face, which is especially suitable for conditions where top coal caving, support and maintenance are difficult in the end area of ​​a fully mechanized caving mining face, and belongs to the field of underground coal mining equipment. Background technique [0002] The law of mine pressure in the end area of ​​fully mechanized caving face is different from that in the middle of the working face. The coal rock in the end area is constrained by the direction and lateral direction of the working face at the same time, and is affected by the support structure system of the roadway in the end area and the superposition of bearing pressure, etc., resulting in The stability and caving law of the coal rock in the end area are different from those in the middle of the working face, which in turn affects the process parameters of coal caving in the end ar...

AI Technical Summary

Problems solved by technology

[0004] At present, there are few or even blank studies on the law of mine pressure in the end area of ​​fully mechanized caving face, the law of coal and rock caving and its influence, the parameters of coal caving process and the end support.

There is no mature end support for fully mechanized caving face that can not only put coal at the end, but also facilitate end support

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