综放工作面矿压显现规律实测研究

张文宗

摘 要：为了掌握回采工作面上覆岩层运动横向和纵向的发展规律及移动概况与支架的相互关系，更好地进行老顶来压的预报，需要提出合理的顶板管理措施。本文以神华寸草塔二矿31203综放工作面为研究对象，制订矿压观测的方案，利用液压支架压力自动监测系统对31203工作面初采期间的顶板来压现象及辅助运输顺槽的顶板移近量进行研究，得出综采工作面初采期间内矿压显现的基本规律，为工作面应对矿压现象、实现安全高效生产提出了理论性指导。

关键词：综采;矿压规律;顶板来压

中图分类号：TD323 文献标识码：A 文章编号：1003-5168（2018）31-0078-03

Research on Actual Measurement of Mine Pressure Behavior in

Fully Mechanized Mining Face

ZHANG Wenzong

（Shenhua Shendong Cuncao Tower No.2 Mine，Ordos Inner Mongolia 017209）

Abstract： In order to grasp the lateral and vertical development law of overburden strata movement and the relationship between overburden strata movement and support in mining face， and predict the main roof pressure better， reasonable roof management measures are needed. Taking the 31203 fully mechanized caving face of Shenhua Shendong Cuncao Tower No.2 Mine as the research object， the mine pressure observation scheme was formulated， and the hydraulic support pressure automatic monitoring system used the roof plate pressing phenomenon during the initial mining of 31203 working face and the roof displacement of the auxiliary transportation channel. The research on the quantity was carried out， and the basic law of mine pressure in the initial mining period of the fully mechanized mining face was obtained， which provided theoretical guidance for the working face to deal with the phenomenon of mine pressure and achieve safe and efficient production.

Keywords： fully mechanized mining;mine pressure law;roof pressure

煤礦在开采过程中，在掘进的扰动作用下，改变了自然状态下原岩的赋存状态。随着工作面的推进，煤体被不断剥落，巷道及其周围硐室的围岩所承受的应力也会不断加大并趋于复杂化，在一系列动力现象（如岩体变形、支护物折损、顶板破碎等）下呈现出不同的矿压显现规律。强烈的矿压显现引发的矿压事故一直占据着煤矿伤亡事故的首位，严重威胁着安全高效生产的顺利进行。因此，深入研究矿压显现规律，科学总结预防控制措施，对煤矿实现安全高效生产具有重要意义。

1 工作面概况

神华寸草塔二矿31203综放工作面位于31煤二盘区、B54和补勘2钻孔连线西南侧，与连线平行[1]。工作面推进长度2 609.7m，工作面宽度253.6m，煤层厚度为3.8～7.5m，平均煤厚6.42m，倾角为4°。回采范围位于31煤与42上煤层分叉复合线两侧，分叉区范围为：主运……