基于覆岩破坏层次化效应的综放工作面支架工作阻力确定研究

张学亮

(天地科技股份有限公司 开采设计事业部，北京100013)

[摘要]分析了微震监测结果与工作面矿压显现之间的相互关系，认为覆岩的破断存在层次化分布，提出了“近-远场层次化效应模型”，分析认为近场岩层对确定综放支架工作阻力至关重要，给出了基于覆岩破坏层次化效应的综放工作面支架工作阻力确定的相关公式及参数确定方法。

[关键词]层次化效应；工作阻力；综放工作面

[中图分类号]TD355.4[文献标识码]A

[收稿日期]2014-07-31

DOI[]10.13532/j.cnki.cn11-3677/td.2015.01.026

[基金项目]“十二五”科技支撑计划项目(2012BAB13B02-02)；天地科技股份有限公司

[作者简介]张学亮(1984-)，男，山东临朐人，硕士，助理研究员，主要从事矿山压力与岩层控制及采煤方法等方面研究。

Working Resistance of Full-mechanized Top-coal Caving Face

Based on Layering Effect of Overlying Rock

ZHANG Xue-liang

(Coal Mining & Designing Department, Tiandi Science & Technology Co., Ltd., Beijing 100013, China)

Abstract:By analyzing the relationship between micro-seismic monitoring result and underground pressure behavior of mining face, It was found that breakage of overlying rock had layering distribution characteristic."near-far field layering effect model"was set up and it was believed that near filed rock strata was important for confirming working resistance of top-coal caving powered support.Corresponding formula of calculating working resistance of top-coal caving powered support which was based on layering effect of overlying rock was put forward.

Keywords:layering effect; working resistance; full-mechanized top-coal caving face

[引用格式]张学亮.基于覆岩破坏层次化效应的综放工作面支架工作阻力确定研究[J].煤矿开采，2015，20(1)：89-91，98.

综放工作面液压支架工作阻力的确定是综放开采设备选型配套及安全开采的核心问题，针对该问题，我国学者展开了一系列的研究。文献认为传统的采高倍数方法确定支架载荷已不适用，提出了确定综放支架工作阻力的基本原则。文献在总结30多个综放面实测支架最大载荷与煤层硬度系数、采深以及顶煤厚度的关系，得到回归公式：Pmax=1939+21H+471f+155/Md，并在此基础上取1.2～1.35的安全系数确定支架额定支护阻力。文献采用了反分析数值模拟法，以回采矿压显现特征来确定数值计算模型，通过数值模拟来确定支架工作阻力。……