摘要
为了论证在北衙灰岩地区建设尾矿库的可行性,通过对北衙地区岩溶发育规律分析,以钻探、高密度电法、EH4多种勘察手段验证,其岩溶主要受控于张性断裂,库区无张性断裂通过,库区岩溶发育一般;通过对库区岩溶塌陷形成条件分析,地下水位变动和地表雨水入渗对库区岩溶塌陷的动力作用有限,引发库区岩溶塌陷的动力可能为尾矿渣堆渣体荷载,通过对洞体稳定性计算,并运用FLAC3D数值模拟分析,结果表明:尾矿库在堆渣荷载状态下,不会引发库区下伏岩溶塌陷.这为尾矿库的选址、设计提供了极其重要的科学依据,对在岩溶地区建设Ⅱ类场尾矿库具有较强的借鉴意义.
In order to demonstrate the feasibility of constructing a tailing pond in Beiya region,based on the analysis on the characteristics of Karst development in Beiya region,using multiple survey methods,such as boring,high density resistivity and EH4,it proves that the Karst is mainly controlled by tension fracture,no tension fracture passes the tailing pond proposed,and the development of Karst is classified as ordinary.Analysis on the formation condition of Karst collapse in the tailing pond proposed shows that underground water level variation and rain water penetration have a limited impact on Karst collapse.What causes Karst collapse might be the accumulated slag load.In accordance with cave stability calculation and FLAC3D value analogue analysis,the accumulated slag load will not cause Karst collapse under the tailing pond proposed.This study provides an important scientific basis for the site selection and design of tailing pond.It also sets an example for the construction of Type II tailing pool in a Karst region.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2012年第4期494-499,共6页
Journal of Liaoning Technical University (Natural Science)
基金
云南省自然科学基金资助项目(99D0023M)
云南省教育厅科学研究基金重大专项资金资助项目(14051320)
