不规则大采空区不稳定区域研究
来源期刊：有色金属科学与工程2011年第6期
论文作者：唐敏康 刘明荣 张东炜 赵奎
文章页码：43 - 46
关键词：数值模拟；相似模拟；采空区；不稳定区域
Key words：numerical simulation; similarity simulation; mined-out areas; instability district
摘 要：
某金银矿经过多年的地下开采，已形成暴露面积约为0.8万m2，体积约为9.5万m3不规则大采空区为消除大规模地压隐患，需要确定不稳定区域以便进行地压处理数值模拟研究结果表明，94 m中段顶板存在较大的拉应力及下沉位移量最大，初步判断此中段为不稳定区域在此基础上，通过相似模拟试验发现94 m中段顶板位置首先出现裂纹，并且最先垮塌，进一步论证了此中段为不稳定区域，为地压处理方案提供了科学依据。
Abstract:
The big irregular mined-out area was formed after years of underground mining in a gold-silver mine. The exposed area is approximately 0.8 million square meters with the volume of 95, 000 cubic meters. To remove the hidden danger of large-scaled ground pressure, the instability district must be determined for processing ground pressure. The numerical simulation results show that the 94 m phase roof exist big tensile stress and the submersion displacement quantity is biggest, this phase roof is preliminary judged as the instability district. On these bases, the similarity simulation experiment discovered that the 94 m phase roof position first presents the crack, and collapses first. This phase roof is further proved as the instability district. It provides scientific basis for processing ground pressure.
