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我局一矿是全国现代化样板矿井之一,目前已拥有八套综采设备,为对今后应用综采设备,选择合理的架型、初撑力及工作阻力等参数提供一些科学的参考依据,本文就戊_8煤层—17071综采面的矿压观测资料进行了回归计算和分析,从中评价了该架型在一矿戊_8煤层的适应性,为进一步搞好综采工作面顶板管理寻求更有效的途径。 一、工作面概况及观测内容 1.工作面地质及生产技术条件 戊_8煤层在本区内无伪顶。直接顶为灰色及深灰色页岩,层理较明显,性脆,采后易垮落老顶为灰色砂岩(含水层),厚度在0～9.5米范围内。
Our mine is one of the national modernized model mines. Now we have eight sets of fully mechanized mining equipment, which provide some scientific reference for the application of fully mechanized mining equipment, reasonable frame selection, initial support force and working resistance parameters in the future. In this paper, the regression calculation and analysis of the rock pressure observation data of No.17071 fully mechanized coal mining face in E8 coal seam are carried out. The adaptability of the frame type in E8 coal seam is evaluated. In order to further improve the roof management of fully mechanized coal mining face, Seeking a more effective way. I. Overview and observation of face 1. Geological and production conditions of work surface E_8 coal seam in the area without pseudo top. Directly to the top of the gray and dark gray shale, layering more obvious, brittle, easy to collapse after the acquisition of the old gray sandstone (aquifer), the thickness of 0 ~ 9.5 meters.