层间应力影响下近距离煤层工作面合理错距留设问题研究

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摘要采用传统矿压、弹性半平面体理论及现场实测相结合的研究方法，考虑层间应力分布因素的影响，对近距离煤层联合开采条件下工作面合理错距的留设问题进行研究。研究得出：(1) 由矿压理论计算得出工作面错距留设距离应满足的基本条件；(2) 在理论计算或实测分析的煤层工作面支承压力影响范围的基础上，采用半平面体理论分析计算层间应力影响区范围，得到工作面错距修正值；(3) 将工作面错距修正值与矿压理论计算值作类比，取其中数值较大并满足工作面错距留设基本条件的距离作为联采工作面的合理错距。以石圪节煤矿生产实际为背景，分析工作面合理错距的留设过程，最终选定该矿联采工作面合理错距值为55 m。在此错距条件下，工作面的安全、高效生产得到保证。

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	杨伟1
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关键词 ：采矿工程, 近距离煤层, 联合开采, 工作面错距, 半平面体, 现场实测

Abstract：Considering the influence of stress distribution factor between layers，the combining research methods of the traditional rock pressure，elastic plane body theory and field measurement are adopted to analyze the issue of the coal face reasonable malposition setting under the condition of the combined mining face in close distance coal seam. The conclusions are obtained as follows：(1) The face malposition setting distance should satisfy the basic conditions calculated by the theory of the rock pressure. (2) Based on the influence scope of the lower coal seam abutment pressure got from the mechanical theory or the measurement analysis，the interlaminar stress influence scope is calculated by the theoretical method of semi-plane and get the correction value of the face malposition. (3) Comparing the face malposition correction value with the calculated result by the traditional rock pressure，the larger of the two face malposition value，and also satisfying the basic conditions calculated by the theory of rock pressure，is took as the reasonable malposition setting distance. Through the analysis of reasonable malposition setting in the context of actual production in Shigejie coal mine，the reasonable face malposition of 55 m is setted finally. In this condition，the safe and efficient production is guaranteed.

Key words： mining engineering close distance coal seams combined mining malposition half-plane body field measurement

引用本文:

杨伟1，2，刘长友1，2，杨宇1. 层间应力影响下近距离煤层工作面合理错距留设问题研究[J]. 岩石力学与工程学报, 2012, 31(S1): 2965-2972.
YANG Wei1，2，LIU Changyou1，2，YANG Yu1. REASONABLE MALPOSITION SETTING IN CLOSE DISTANCE COAL SEAMS UNDER INFLUENCE OF INTERLAMINAR STRESSES. , 2012, 31(S1): 2965-2972.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2012/V31/IS1/2965

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