浅埋煤层覆岩切落裂缝破坏及控制方法分析  

Analyzing falling crack failure of overburden strata of shallow coal seam and its control method

作　　者：余学义[1] 黄森林[1] 

机构地区：[1]西安科技大学能源学院,陕西西安710054

出　　处：《煤田地质与勘探》2006年第2期18-21,共4页Coal Geology & Exploration

基　　金：国家自然科学基金(40572155);国家科技部社会公益项目(国科发计字[2003]75号);陕西省自然科学基金(1003E206)资助

摘　　要：陕北神东矿区厚风积沙松散层、薄基岩条件下浅埋煤层开采引起的地表沉陷,呈非连续切落式裂缝破坏。大量研究表明,这种裂缝损害受覆岩中关键层的控制。因此,研究浅埋煤层关键层的破断规律和失稳条件是解决这种条件下采动损害控制的关键技术。以神东矿区大柳塔1203综采工作面为例,应用理论分析和数值模拟方法研究覆岩中关键结构层稳定条件与采动损害之间的关系,为神东矿区生态环境保护,确定合理、经济的保水控制开采方法提供理论依据。The mining under the condition of the shallow coal seam, the thick loose beds and the thin base rock in Shendong mining area in Shaanxi Province of China, causes the surface subsidence take on the situation of the discontinuous falling crack failure. A great deal of analysis and research indicates that the crack damage is controlled by the key stratum in the overburden strata. Therefore, the key for solving the control of mining damage under this condition is to research the rules of the key stratum failure and the sliding condition in the shallow seam. Taking No. 1203 longwall face in Daliuta mine of Shendong mining area for example, the paper presents the relationship between the stability condition of the key stratum structure and the mining damage with the method of analyzing theory and numerical simulation, supplying the theoretic evidence for the environmental protection and the confirmation of the reasonable and economical control mining methods in Shendong mining area.

关 键 词：浅埋煤层 神东矿区 采动损害 控制开采 

分 类 号：TD325[矿业工程—矿井建设]