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本文分两部分,前部分根据打通煤矿矿山压力观测总结及多年来现场实测和实验室相似造型研究所得的大量数据分析,提出了回采工作面在固体介质中运动时形成压力传播的力学模型。并将回采工作面前后方的压力分布状态划分成八个区域。文章在引用各种力学理论分析开采层底板受力情况的基础上,确认在工作面前方的支承压力为非均布荷载时,传递在底板岩层中的应力曲线为斜交椭园图象。 后部分着重论述采动压力与巷道位置的关系。在阐明缓斜煤层采场周围压力分布观律的基础上,提出了一些对确定合理巷道位置和支架结构的计算方法。研究成果对煤矿设计和矿井生产具有一定现实意义。 本文承蒙杨其中同志审校,并提出很多宝贵意见,特表感谢。
This paper is divided into two parts. The former part is based on a large number of data obtained from the mine pressure observation of coal mine and the field measurements and laboratory researches done in the past years. The mechanics model of pressure propagation when mining working face moves in solid medium is proposed. The pressure distribution in the front and back of mining face is divided into eight regions. Based on the analysis of the mechanics of mining floor, the article confirms that the stress curve in the floor rock strata is the bias elliptical image when the supporting pressure in front of working face is non-uniform load. After the part focuses on mining pressure and the relationship between the location of the roadway. On the basis of clarifying the pressure distribution law around the stope of gently inclined coal seam, some calculation methods for determining the position and support structure of a reasonable roadway are proposed. The research results have certain practical significance for coal mine design and mine production. Thanks to Comrade Yang Qizhong’s revision of this article and many valuable suggestions, special thanks to the special table.