摘要
依据皖北矿务局百善煤矿风氧化带煤层安全开采实践,在大量物理力学试验的基础上,阐述了风氧化带煤层顶板岩性变异特征;根据现场实际观测的数据,分析总结了工作面进入风氧化带开采的覆岩破坏移动规律,并从理论上解释了移动规律产生的原因。为风氧化带内煤层安全开采提供了理论依据,在一定程度上丰富了我国的"三下"开采技术。
According to exploitation practice in Baishan mine of Wanbei bureau, on the base of physical and mechanical experimentation on weathered rocks of overlying strata from Baishan coal mine, this paper introduces regulars and characteristics of roof rocks' differentiation of efflorescent oxygenized belts coal seam. By observed data, it also summarizes regulars of overlying strata' motion and demolish when workface begins coming into efflorescent oxygenized belts. In addition, this paper also analyzes cause of regulars of compounding rocks layer' motion and demolish. Practices proves the paper can supply theoretical basis, and enlarge our exploitation technology as well.
出处
《安徽理工大学学报(自然科学版)》
CAS
2003年第2期1-4,共4页
Journal of Anhui University of Science and Technology:Natural Science
关键词
风氧化带
煤层开采
覆岩移动
破坏规律
顶板岩性
冒落带
冒顶
“三下”开采
efflorescent oxygenized belts
weathered rocks
motion and demolish regulars of overlying strata
caving belts
roof of landslide