无底柱分段崩落法开采地表移动分析的粘-弹性力学模型  

A VISCO-ELASTIC MODEL FOR ANALYSIS OF GROUND SUBSIDENCE DUE TO UNDERGROUND MINING BY PILLARLESS SUBLEVEL CAVING METHOD

作　　者：李文秀[1] 郭玉贵[1] 侯晓兵[1] 

机构地区：[1]河北大学建筑工程学院,河北保定071002

出　　处：《工程力学》2009年第7期227-231,共5页Engineering Mechanics

基　　金：河北省科技攻关项目(072156142);河北省教育厅科研项目(2007415)

摘　　要：采用无底柱分段崩落法开采所引起的地表移动过程是一个复杂的过程。该文根据岩石流变学理论,给出无底柱分段崩落法开采地表下沉预计分析的粘-弹性力学理论模型,并对鲁中冶金矿业集团公司小官庄铁矿无底柱分段崩落法开采工程实例进行了具体的计算分析。通过运用该文给出的粘-弹性力学理论模型,对小官庄铁矿地表下沉量进行了预测,计算分析了小官庄铁矿西采区地表下沉随时间变化的地表动态下沉过程。将理论分析结果与现场工程实测资料进行了对比,发现二者吻合较好,表明该文提出的方法可用于预计分析无底柱分段崩落法开采所引起的地表移动问题。The ground movement process induced by the pillarless sublevel caving method is a comphcated process. According to theory of rock rheology, the theoretical model for the prediction and analysis of the ground subsidence due to deep underground mining by the pillarless sublevel caving method is given. By applying the model to actual cases of underground iron ore mining by the pillarless sublevel caving method, the ground subsidence due to underground mining in Xiaoguanzhuang Iron Mine, Luzhong Metallurgical Mining Company have been predicted. And the dynamic ground subsidence due to deep underground mining in the west mining area is analyzed. The agreement of the theoretical results with the filed measurements shows that the model is satisfactory and the formulae obtained are vaild and thus can be effectively used for predicting the ground movement due to deep underground mining by the pillarless sublevel caving method.

关 键 词：采矿工程 岩体力学 地表下沉铁矿 无底柱分段崩落法 粘-弹模型 

分 类 号：TD325[矿业工程—矿井建设] TU457[建筑科学—岩土工程]