摘要
非采动沉降是威胁煤矿工业广场建构筑物安全运行的重要因素之一。为研究厚松散层矿区非采动沉降,以童亭矿工业广场为研究对象,采用分布式光纤感测技术和数值模拟对厚松散层矿区非采动沉降进行监测与分析。结果表明,矿区厚松散层整体呈压缩状态且压缩量不断增加;第二含水层、第三隔水层和第四含水层为主要压缩层,压缩量分别占总压缩量的30%、42%、11%;当第二含水层固结趋于稳定,第四含水层失水导致的第三隔水层和第四含水层压缩是造成非采动沉降的主要原因;随着第四含水层不断失水,地表沉陷盆地的最大沉陷值与沉陷范围都在一直增大,且增长速率逐渐减小并趋于稳定。结论可为矿区的非采动沉降规律研究提供一定参考。
Non-mining subsidence is one of the important factors threatening the safe operation of coal mine industrial square buildings.In order to study the non-mining subsidence of thick loose layer mining area,taking Tongting Mine Industrial Square as the research object,the distributed optical fiber sensing technology and numerical simulation were used to monitor and analyze it.The results show that the thick loose layer in the mining area is compressed and the compression amount is increasing.The second aquifer,the third aquiclude and the fourth aquifer are the main compression layers,accounting for 30 %,42 % and 11 % of the total compression respectively.When the consolidation of the second aquifer tends to be stable,the compression of the third aquiclude and the fourth aquifer caused by the water loss of the fourth aquifer is the main cause of non-mining subsidence.With the continuous loss of water in the fourth aquifer,the maximum subsidence value and subsidence range of the surface subsidence basin have been increasing,and the growth rate has gradually decreased and stabilized.The conclusion provides some reference for the study of non-mining subsidence law in other mining areas.
作者
刘昊
徐良骥
刘潇鹏
付翔
陈秋影
LIU Hao;XU Liangji;LIU Xiaopeng;FU Xiang;CHEN Qiuying(School of Spatial Information and Geomatics Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China;National Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine,Anhui University of Science and Technology,Huainan Anhui 232001,China)
出处
《安徽理工大学学报（自然科学版）》
CAS
2023年第4期46-53,共8页
Journal of Anhui University of Science and Technology:Natural Science
基金
国家自然科学基金资助项目(41472323)
安徽省自然科学基金青年基金资助项目(2108085QE207)
淮南市科技计划基金资助项目(2021130)。
关键词
非采动沉降
分布式光纤
厚松散层
第四含水层
数值模拟
non-mining subsidence
distributed optical fiber
thick loose layer
the fourth aquifer
numerical simulation
