大石桥市官屯镇大岭西山菱镁矿复采地质灾害预测及开采方式探讨

DISCUSSION ON THE GEOLOGIC HAZARD PREDICTION OF THE REMINING AND MINING METHOD OF THE MAGNESITE IN GUANTUN VILLIAGE DASHIQIAO CITY

大石桥市官屯镇大岭西山菱镁矿区属小圣水寺菱镁矿床的一部分,由于分散开采,现状矿 山地质灾害严重,已经致使矿区停采,在矿区的复采中又可能诱发和遭受新的地质灾害,形成复采 中的安全隐患。研究认为,复采可能诱发的地质灾害类型有采空区地面塌陷、地裂缝、岩石崩塌, 可能遭受地质灾害类型有采空区塌陷、地裂缝、滑坡、矿坑突水、崩塌(冒顶垮帮)。开采方式可 采取露采为一期、坑采为二期的方式进行,并根据相应的地质灾害类型指出了在复采中应采取的安 全技术措施和建议。

The magnesite in daling West Mountain, guantun villiage, dashiqiao city has been off production because of heavy geologic hazard caused by dispersed mining, which is a part of magnesite in Xiaoshengshuisi. The remining may induce new geologic hazard such as land collapse, geofracture and rock breakdown, it also may suffer new geologic hazard such as collapse, geofracture, landslide, water invasion, breakdown-the top collapse. Opencut mining can be used in the first stage; pit mining can be used in the second stage. According to the relative hazard types, the security measure and suggestion of the remining ore were proposed.