皖北矿区综采工作面软弱围岩液压支架耦合性能分析 -学兔兔 www.xuetutu.com.pdf

学兔兔 煤 炭 工 程 第48卷第3期 COAL ENGINEERING Vo1 ． 48，No．3 doi：10．1l799／ce2016O3014 皖北矿区综采工作面软弱围岩液压支架 耦合性能分析 刘俊峰 ，王国法 ，王福清 ，任怀伟 (1．天地科技股份有限公司，北京 100013；2．皖北煤电集团有限责任公司，安徽宿州 234000) 摘 要：针对皖北矿区软弱围岩特性，分析了不同位置软弱围岩的运移规律，得出其对工作 面支护的影响作用从强到弱依次为直接顶、底板、煤层和基本顶：基于综采工作面软弱围岩液压 支架强度耦合、刚度耦合和稳定性耦合分析，得出了软弱围岩综采工作面支护强度确定需要考虑 顶板支护、围岩完整性控制两个方面，提出合理的液压支架初撑强度确定方法．完善了软弱围岩 综采工作面液压支架设计要求。开采实践可知，液压支架设计合理能够满足软弱围岩综采工作面 开采要求。 关键词：软弱围岩；初撑强度；支护强度；支架围岩耦合；液压支架设计 中图分类号：TD353 文献标识码：A 文章编号：1671—0959(2016)03—0042．04 Analysis on coupling performance of hydraulic support and weak surrounding rock in fully mechanized coal mining face in Nothern Anhui mining area LIU Jun—feng ，WANG Guo—fa ，WANG Fu—qing ，REN Huai—wei (1．Tiandi Science and Technology Co．，Ltd．，Beijing 100013，China；2．Wanbei Coal—electricity Group Co．，Ltd．，Suzhou 234000，China) Abstract：Aiming at the characteristics of weak surrounding rock in Nothem Anhui mining area，the movement law of weak surrounding rock in different location is an~yzed，it is concluded that the effect on working face support of immediate roof，immediate floor and coal seam and main roof decreases successively．Based on the analysis on stiffness coupling， intensity coupling and stability coupling between the soft surrounding rock and suppo~in the fulIy mechanized working face，there are 2 aspects needs consideration in determination of the support intensity，roof supporting and surrounding rock integrity contro1．The determination method of setting int