摘要
工作面顶板失稳的原因复杂,实际生产过程中必须根据围岩特征、巷道布置、断面形状、支护参数等确定失稳原因,本文中引起巷道失稳的主要原因为上部工作面煤柱集中压力、工作面回采动压及围岩自身特征等因素影响,此类巷道支护及围岩控制薄弱点为上帮及上帮肩窝或下帮及下帮肩窝处顶板的断裂带,制定有针对性的措施进行加强支护,从而达到顶板控制的目的。
Causes of working face's roof instability is complex,instability reasons must be determined in accordance with the characteristics of surrounding rock,roadway layout,section shape and supporting parameters in actual production process,main reason that causes roadway instability is affected by pillar's over concentrated pressure on upper working face,back pressure of the working face and characteristics of surrounding rock,etc.factors,the weak points of this kind of roadway surrounding and rock control is roof fracturezone in upper and lying side and their jianwo places,develop targeted measures to strengthen support,soas to achieve the purpose of roof control.
作者
薛志明
王学龙
XUE Zhiming;WANG Xuelong(Shicaocun Coal Mine of Shenhua Ningxia Coal Industry Group,Lingwu,Ningxia,750400;Energy Institute of Xi'an University of Science and Technology,Xi'an,Shaanxi,710054)
出处
《神华科技》
2017年第5期26-28,共3页
Shenhua Science and Technology
关键词
采动影响
顶板
失稳
控制
Mining influence
Roof
Instability
Control
