综采工作面直接顶碎裂岩体冒顶机理及其控制

The Mechanism and Control of Cataclastic Rock Mass Caving of Immediate Roof on Fully Mechanized Coal Face

本文根据直接顶岩体冒顶现场实测和相似模拟实验结果，阐明综采面破碎顶板的碎裂岩体属性与冒顶特征，并建立碎裂岩体冒顶力学模型，深入研究冒顶本质原因和控制原理。在此基础上，本文提出了有效控制碎裂岩体冒顶的指标体系与技术措施，进而在生产实践中成功地控制了碎裂岩体冒顶事故。

Based on the results of underground observations and model tests of simulated materials of immediate roof, it is expounded that fragmented roof belongs in cataclastic rock mass,and its caving characteristics is clarified in this paper too. A mechanical modelof cataclastic rock mass caving is set up,the caving cause and control principle are studiedthoroughly.In the end,the index system and technical measures to effectively control cataclastic rock mass caving are proposed, and the downtime due to cataclastic rock masscaving can be decreased successfully during coal production.