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风氧化带内煤层安全开采关键技术的研究 被引量:32

Study on the law of coal layer safe extraction in efflorescent oxygenized belts
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摘要 根据现场观测资料和工程实践,着重论述了风氧化带内煤层开采时覆岩破坏移动特征,风化带岩石属性和风氧化带内煤层安全开采机理的定性、定量分析.提出了风氧化带煤层开采无垮落带;受采动影响后,具阻水和抑制导水断裂带继续发展的双重作用以及移动快、变形大、回宿快、下沉大和适当加大开采厚度等新观点. Based on testing datas in worksite and engineering practice,this paper mainly discussed strata damage movement characteristic, rock properties of weathered zone, qualitative and quantitative analysis of the law of coal layer safety extraction in weathered zone when the coal layer is extracted in efflorescent oxygenized belts. This paper brings up the following new opinions that coal layer extraction hasnt caving zone in efflorescent oxygenized belts which have two effects of blocking water and preventing water flowing fractured zone from going on developing after mining effect and appropriately enlarge the extraction thickness and so on.
出处 《煤炭学报》 EI CAS CSCD 北大核心 2003年第6期608-612,共5页 Journal of China Coal Society
关键词 风氧化带 覆岩破坏移动 关键技术 efflorescent oxygenized belts strata damage movement key technique
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