摘要
某航电枢纽库区右侧临近废弃煤矿,库区淹没线范围内存在废弃老窑采空区及煤硐,航电枢纽蓄水后,库水可能通过出露煤硐及岸坡岩体裂隙向采空区渗漏,影响库区正常蓄水。通过调查测绘、工程地质钻探、工程物探(高密度电法)等多种工程勘察方法查明了煤层、采空区及煤硐的分布位置,制定并实施了废弃煤硐注浆封堵、防渗帷幕与防渗挡墙相结合的防护方案。通过试验验证了防渗工程的有效性,保证了库区正常蓄水的安全,对于类似的工程具有一定的借鉴意义。
The right side of the hub project reservoir area is adjacent to an abandoned coal mine.There are abandoned goafs and coal tunnels within the inundation line of the storage area.After impoundment of navigation power junction,the reservoir water may leak into the goafs through exposed coal tunnels and bank slope rock fractures,affecting the normal water storage in the area.Through various engineering survey methods such as surveying and mapping,geological drilling,and geophysical exploration(high-density electrical method),the distribution positions of coal seams,goafs,and coal tunnels were identified.A protection plan combining grouting and sealing of abandoned coal tunnels,anti-seepage curtains,and anti-seepage retaining walls was developed and implemented.The effectiveness of anti-seepage engineering has been verified through experiments,ensuring the safety of normal water storage in the reservoir area,which has certain reference significance for similar projects.
作者
侯俊伟
左利兵
徐文腾
Hou Junwei;Zuo Libing;Xu Wenteng(CCTEG Chongqing Engineering Co.,Ltd.,Chongqing 400016,China)
出处
《岩土工程技术》
2023年第4期386-391,共6页
Geotechnical Engineering Technique
关键词
采空区
高密度电法
工程勘察
防渗帷幕
压水试验
goaf
high density electrical method
engineering investigation
anti-seepage curtain
water pressure test
