二道沟矿深井开采地表移动影响分析  

Influence of deep mining on surface movement in Erdaogou Mine

作　　者：吴清明[1] 曹敏[1] 严鹏 Wu Qingming;Cao Min;Yan Peng(Jiapigou Mining Co.,Ltd.of China National Gold Group Corporation;Changchun Gold Research Institute Co.,Ltd.)

机构地区：[1]中国黄金集团夹皮沟矿业有限公司,132411 [2]长春黄金研究院有限公司

出　　处：《黄金》2020年第6期40-43,共4页Gold

摘　　要：二道沟矿以急倾斜极薄矿脉为主,开采深度已达1500 m,深井开采时地压活动加剧,采动影响增加。根据岩体力学理论,应用Midas-GTS软件,通过数值分析,研究了深井开采高应力环境影响下地表移动的规律。对于二道沟矿区的地质及岩石条件,在采用浅孔留矿采矿法开采的中段,地表下沉量持续增加,开采到420 m中段时,地表最大下沉量达到7 mm左右,继续向深部开采,地表下沉量趋于稳定。深井开采对地表移动影响甚微,地表最大下沉量小于8 mm,未达到传统边界角的划定边界。The Erdaogou Mine are mainly composed of steeply inclined extremely thin veins.The mining depth has reached 1500 m and with more intense ground pressure activities in the process,the influence on mining movement gets severe.According to the theory of rock mass mechanics,the law of surface movement under the influence of high stress environment in deep mining is studied through the application of Midas-GTS software and numerical ana-lysis.Based on the geological and rock conditions of Erdaogou Mining District,the level mined by short-hole shrinkage method continues to subside,and when it reaches the 420 m level,the maximum subsidence is around 7 mm.When it goes further down,the subsidence degree is steady.Deep mining has little effect on surface movement,with the maximum subsidence of the surface less than 8 mm and not reaching the boundary of the traditional boundary angle.

关 键 词：深井开采 急倾斜极薄矿脉 地表移动 数值分析 Midas-GTS 

分 类 号：TD323[矿业工程—矿井建设]