浅埋综采工作面顶板岩层等步切落特征分析  

Analysis of Roof Equal-step Caving Characteristic in Shallow Buried Full-mechanized Mining Face

作　　者：李正杰[1,2] 于海湧[1,2] 

机构地区：[1]煤炭科学研究总院开采设计研究分院,北京100013 [2]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《煤矿开采》2014年第2期42-44,128,共4页Coal Mining Technology

基　　金：国家自然科学基金项目(51304115);中煤科工集团科技创新基金(2012MS005);"十二五"国家科技支撑计划:蒙陕深部矿区亿吨级煤炭基地建设关键技术(2012BAB13B02)

摘　　要：根据对浅埋深综采工作面矿压实际观测和来压数据分析,发现浅埋综采工作面顶板具有明显的"等步"切落特征,即浅埋工作面具有等距周期来压特点。在此基础上,全面分析了3种滑动破坏切落模型下的支架受力状态,得出垂直滑动切落模型是浅埋工作面支架被压死的最危险状态,同时也得出了浅埋工作面支架合理工作阻力的理论计算公式,该浅埋顶板模型的建立丰富了浅埋深矿压理论,对实际生产具有指导意义。Obvious roof equal-step caving, that is, equal-pace periodical weighting characteristic was found in shallow buried full- mechanized mining face by underground pressure observation and data analysis. On the basis of this, support stress states of 3 sliding failure caving models were analyzed. It was obtained that vertical sliding caving model was the most dangerous state for sup- port. Theoretical calculation formula of rational support working resistance for shallow buried mining face was obtained. The shallow bur- ied roof model enriched shallow buried underground pressure theory and could instruct mining practice.

关 键 词：浅埋深 顶板岩层 等步切落 等距周期来压 

分 类 号：TD322.1[矿业工程—矿井建设]