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中文摘要：
空场采矿法滞留的采空区已成为河北某铁矿山的严重安全隐患之一。针对该矿采空区数量多、体积大的特点，在现场调查和室内力学实验研究的基础上，利用计算机数值模拟技术．采用RFPA2D软件对采空区围岩的破坏过程进行模拟计算．并结合现场的声发射地压监测数据对采空区的稳定性进行评价．确定目前该矿采空区稳定性良好。
英文摘要：
Mined-out area produced by mining activities has be- come one of the major serious hidden dangers in some local iron mines, Hebei province.According to the characteristics of mined- out areas such as large quantity and big volume in the mine, on the basis of the field investigation and indoor mechanics experi- mental study, the simulation of failure process of mined-out are- as＂ surrounding rock was carried out with the software RFPA2D. Combined with the data obtained by in-situ acoustic emission monitoring, the stability evaluation of the mined-out areas was made ,the results showed that the stability of mined-out areas of this mine is good at present.
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