铁路桥隧下保护煤柱合理留设及安全性评价  

Reasonable Setting and Safety Evaluation of Protective Coal Pillar Under Bridges and Tunnels of Railway

作　　者：曹利 刘辉[2,3] 张宏贞[2] 邓喀中[2] 何春桂[3] 

机构地区：[1]神华集团包神铁路有限责任公司,内蒙古包头014014 [2]中国矿业大学环境与测绘学院,江苏徐州221116 [3]河北工程大学资源学院,河北邯郸056038

出　　处：《煤矿安全》2014年第3期193-196,共4页Safety in Coal Mines

基　　金：国家科技支撑计划资助项目(2012BAC10B03);国家自然科学基金资助项目(41272389;41104005)

摘　　要：基于神华包神铁路塔-韩铁路专运线下采煤工程实例,提出了仅在桥梁、隧道等重要铁路构筑物下留设保护煤柱,其余各处采取井上下协调保护技术的铁路下采煤方法,进行了铁路下压煤量的估算及安全性评价。结果表明:该方法可多采出煤炭3 258.04万t,资源回收率提高51.5%;各煤层开采引起铁路最大下沉为2.341 m,最大倾斜为8.3 mm/m,最大水平变形为2.5mm/m,该变形量可以通过维修措施加以调整,在该区域进行铁路下采煤是安全的。Based on the transporter line from Tarangaole Coal Mine to Hanjia Village of Shenhua Group Baoshen Railway, the protective coal pillars under bridges and tunnels were preserved, and the coordinated protecting technical measures of underground and surface combined mining for the railway were proposed. The quantity of protective coal pillars was estimated, and the safety was evaluated. The results showed that 32. 580 4 million tons of coal would be more exploited, and the resource recovery rate was increased by 51.5% , the maximum subsidence was 2. 341 mm, the maximum inclination was 8.3 ram/m, and the maximum horizontal deformation was 2.5 ram/ m caused by mining of evel3J coal seam, which could be adjusted with maintaining technical measures. Therefore, mining under rail- ways in this area is safety.

关 键 词：保护煤柱 铁路下采煤 垂线法 安全开采 井上下协调保护 

分 类 号：TD822.3[矿业工程—煤矿开采]