超长大采高综采工作面过大落差断层技术及应用  

Technology and application of overlong high cutting fully-mechanized coal mining face passed through overlarge drop fault

作　　者：杨科[1,2] 王志根[3] 华心祝[1,2] 朱若军[3] 李志华[1,2] 

机构地区：[1]安徽理工大学特殊开采研究所,安徽淮南232001 [2]煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001 [3]国投新集能源股份有限公司,安徽淮南232001

出　　处：《煤炭科学技术》2016年第6期89-93,116,共6页Coal Science and Technology

基　　金：国家自然科学基金资助项目(51374011)

摘　　要：为了确保超长大采高工作面顺利过大落差正断层,采用相似材料模拟和数值模拟试验,分析了大落差正断层及不同采高、不同工作面长度条件下综采工作面围岩力学特征。试验结果分析表明,大落差断层的存在是影响工作面顶板下沉不连续、支承压力演化不均匀的主要因素,而工作面采高和长度的增加对支承压力分布的影响小于对顶板下沉的影响,工作面顶板最大下沉量与采高呈指数关系、与工作面长呈对数关系。提出了整体从上盘留顶破底调斜推进、局部辅助爆破破顶过F18断层的方法与技术方案,采用具有良好控顶护帮功能的ZZ13000-27/60液压支架,采取超高段巷道提前接顶、破碎区注浆加固等技术措施,实现了超长大采高综采面安全、快速过大落差断层,工程应用效果良好。In order to ensure overlong high cutting fully- mechanized coal mining face sucessfully pass through the high drop normal fault,the paper analyzed the surrounding rock mechanics features of the fully mechanized coal mining face under the high drop normal fault,different mining height and different coal mining face length. The test analysis showed that the high drop fault existed was the major factors influenced to the discontinuous subsidence of the roof above the coal mining face and the inhomogeneous evolution of the support pressure,but the mining height and face length increased of the coal mining face would have a less influence to the support pressure distribution than the roof subsidence,the max subsidence value of the roof above the coal mining face would be an exponential relationship to the mining height and would be a logarithm relationship to the length of the coal mining face. A method and technical plan was provided that the coal mining face at the top wall would keep the roof and break the floor,would be pushed forward with the inclination adjustment and would pass through F18 fault locally with an auxiliary blasting of the roof. With an application of ZZ13000- 27 /60 hydraulic powered support with good roof control and sidewall protection functions,the technical measures of the advance roof control of the mine ultra high section roadway,the grouting reinforcement of the broken section of the mine roadway and others were conducted,the overlong high cutting fully mechanized coal mining face was realized to safely and rapidly pass through the high drop fault and excellent engineering application results were obtained.

关 键 词：大落差断层 俯斜综采 大采高 超长工作面 矿压控制 

分 类 号：TD823.9[矿业工程—煤矿开采]