南钦铁路工程中煤矿采空区的防治探讨 .pdfVIP

学兔兔 第22卷2期 中 国 煤 炭 地 质 V01．22 No．2 2010年 2月 C0AL GE0L0GY OF CHINA Feb． 2010 doi：10．3969~．issn，1674—1803．2010．02．08 文章编号：1674—1803(2010)02—0033—07 南钦铁路工程中煤矿采空区的防治探讨 唐景忠 (广西煤炭地质局，广西柳州 545005) 摘 要：新建南钦铁路DK93至DK95区段，经过正在开采的稔子坪煤矿及已停采大硐、横岭煤矿与个别小煤窑。基 于已有的采空区可能危及拟建的铁路，运用现场调查、专项地质测绘、地质钻探、测井、地面物探、跨孔地震成像法等 勘察方法，结合所收集到的采矿资料，对铁路沿线的采空区进行了危险性评估。评估结果认为，横岭、大垌煤矿开采 遗留的采空区在DK93+300至DK94+200区段，地表变形剧烈，对工程建设的安全影响极大。针对不同地段的情况， 采取了高压注浆充填和地面深坑清污、回填碎石土、浅层固结等方法进行处理，对现采矿井提出了留设保安煤柱、减 少地下水抽排量、进行长期跟踪观测的预防建议。 关键词：煤矿采空区；综合勘察；危害；治理；预防；南钦铁路 中图分类号：U212．21；TU853．391，2 文献标识码：A Probe into Coalmine Gob Area Possible Hazard Control in Nanning-Qinzhou Railway Engineering Tang Jingzhong (Guangxi Bureau of Coal Geological Exploration，Liuzhou，Guangxi 545005) Abstract：Th e new Nanning—Qinzhou railway DK93 to DK95 sector will pass through the active Renziping coalmine and already shutdown Dadong and Hengling coalmines as well as some small coal pits．In consideration of existing gob areas may jeopardizing proposed railway，integrated exploration of field investigation，special purposed geological mapping，drilling，well logging，surface geophysical prospecting and cross—borehole seismic imaging have been used，combined with collected mining data，ca~ied out risk assessment for the gob areas along the railway．The results reckoned that the gob areas left behind by Dadong and Hengling coalmines within the DK93+300 to DK94+200 sector，there surface deformations are in a violent manner and will have huge impacts to the construction safety．In allusion to different conditions of