高潜水位矿区挖深垫浅填土沉降监测分析  

Monitoring and Analysis of Earth Fill Subsidence by Deep-digging and Shallow-filling in Mining Area with High Groundwater Level

作　　者：张敏 刘辉[1,2,3] 朱晓峻 刘朝发[4] ZHANG Min;LIU Hui;ZHU Xiaojun;LIU Chaofa(School of Resources and Environmental Engineering, Anhui University, Hefei Anhui 230031,China;Anhui Province Engineering Laboratory for Mine Ecological Remediation, Hefei Anhui 230031,China;School of Mining and Geomatics, Hebei University of Engineering, Handan Hebei 056038, China;Anhui transportation and navigation engineering co. LTD, Hefei Anhui 230601, China)

机构地区：[1]安徽大学资源与环境工程学院,安徽合肥230031 [2]安徽省矿山生态修复工程实验室,安徽合肥230031 [3]河北工程大学矿业与测绘学院,河北邯郸056038 [4]安徽省交通航务工程有限公司,安徽合肥230601

出　　处：《安徽理工大学学报（自然科学版）》2020年第3期53-59,共7页Journal of Anhui University of Science and Technology:Natural Science

基　　金：国家自然科学基金(51804001);安徽省高校自然科学研究重点项目(KJ2018A0003,KJ2017A038);河北省高等学校青年拔尖人才计划项目(BJ2016010)。

摘　　要：为了研究填土复垦区在自身荷载及地下采煤活动共同作用下产生的地表沉降,以淮北中湖采煤沉降区为研究对象,通过布设地表移动观测站,对"挖深垫浅"填土复垦区地表沉降进行监测分析。结果表明:(1)"挖深垫浅"复垦过程中的地表动态沉降由采煤沉降和土体荷载沉降两部分组成;(2)整体沉降过程分为快速沉降期和稳定期两个时期,快速沉降期周期约为30d,平均下沉速率分别为3.9mm/d、0.65mm/d;(3)土体荷载沉降与填土深度存在对数关系,当填土深度小于1.0m时,沉降量随填土深度的增长率为105.11mm/m,当填土深度大于1.0m时,增长率为13.89mm/m,并逐渐趋于稳定。通过对土地复垦区地表沉降监测与分析,为高潜水位采煤沉降区土地复垦提供了理论依据和技术参考。In order to study the surface subsidence of reclaimed land under the combined effect of its own load and underground coal mining activities,taking the coal mining subsidence area in Middle Lake in Huaibei as the research object,a ground movement observation station and a filling settlement monitoring station were set up,the coal mining settlement and soil load subsidence law were analyzed.The results showed that:(1)Dynamic subsidence in the process of advanced treatment of"deep-digging and shallow-filling"consisted of coal mining subsidence and soil load subsidence;(2)The overall subsidence process was divided into rapid subsidence period and stable period,with the rapid subsidence period being about 30d,the average subsidence rate being 3.9mm/d and 0.65mm/d respectively.(3)There was a logarithmic relationship between soil load subsidence and fill height.When the fill height was less than 1m,the settlement increased rapidly with the filling height,which was 105.11mm/m.When the filling height was greater than 1.0m,the growth rate was 13.89mm/m,and gradually became stable.Through monitoring and analyzing the settlement of land reclamation area,the paper provides the theoretical basis and technical reference for land reclamation in subsidence area with high groundwater level.

关 键 词：高潜水位 挖深垫浅 土地复垦 采煤沉降 土体荷载沉降 

分 类 号：TD167[矿业工程—矿山地质测量]