摘要
通过对河北省武安市北洺河铁矿的塌陷区进行实地调查和资料统计分析,用数值模拟软件进行了建模。由于软件对介质的连续性要求,无法模拟采空区上部围岩的坍塌,只能得到上部围岩的塑性变形,采空区沉陷模拟结果与实际情况不符。提出将采空区及塌落区拟用塌落体代替,由此建立相应的数值模型,再通过模拟计算得出塌陷区的预报信息;在此基础上提出治理的方案。对典型采用崩落法采矿的塌陷坑治理具有一定的参考价值。
Based on the survey and the classification of the subsidence area of Beiminghe iron mine,a model is created via the numerical simulation software.Because of the requirement of continuity in the numerical simulation software,the plastic distortion of the upper surrounding wall instead of the collapse in the top of mined-out area will be obtained,which is inconsistent with the actual situation.The goaf could be substituted with the collapsing body,so a related numerical model can be created,and then the prediction on the subsidence area can be obtained via the numerical simulation and calculation. Based on this, the treatment measures are proposed, providing a certain reference for the treatment of the subsidence area in typical caving mining.
出处
《金属矿山》
CAS
北大核心
2009年第12期135-137,162,共4页
Metal Mine
关键词
数值模拟
塌落体
沉陷区
预测与治理
Numerical simulation
Collapsing body
Subsidence area
Prediction and treatment
