缓倾斜中厚矿体分层开采与围岩控制研究  

Research on Stratified Mining and Surrounding Rock Control of Gently Inclined Medium Thick Orebodies

作　　者：池秀文[1,2] 柴志杰 何治良[3] 张聪瑞 任高峰[1,2] CHI Xiuwen;CHAI Zhijie;HE Zhiliang;ZHANG Congrui;REN Gaofeng(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Key Laboratory of Mineral Resources Processing and Environment of Hubei Province,Wuhan 430070,China;School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]矿物资源加工与环境湖北省重点实验室,湖北武汉430070 [3]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《金属矿山》2020年第10期92-97,共6页Metal Mine

基　　金：国家自然科学基金项目(编号:51874218);国家十三五重点研发计划项目(编号:2018YFC0604401)。

摘　　要：挑水河磷矿缓倾斜中厚矿体开采时,围岩的应力状况严重影响采场顶底板的稳定性。采用条带式分层充填采矿法,通过对充填体的破坏机理进行研究,分析不同充填条带宽度、留空区条带宽度及不同充填灰砂比下采场顶底板、充填条带的应力变形,确定充填开采可降低采场围岩塑性区比例,优化开采参数,提高采场围岩的稳定性;通过计算受支护强度影响下的采场围岩应力分布,确定软弱结构面滑动的极限条件,对滑移区域的位置和范围进行预测,通过加强支护以提高围岩软弱结构面的稳定性。When mining gently inclined medium-thick orebodies at Tiaoshuihe Phosphate Mine,the stress of the sur-rounding rock seriously affects the stability of the stope roof and floor. Using the strip layered filling mining method,throughthe study of the destruction mechanism of the filling body,the stress and deformation of the top and bottom floor of the stopeand the filling strip are analyzed under different filling strip width,void strip width and different filling lime-sand ratio. It isdetermined that backfill mining can reduce the plastic zone proportion of the surrounding rock of the stope,and improve thestability of the surrounding rock of the stope by optimizing mining parameters. By calculating the stress distribution of the sur-rounding rock of the stope under the influence of the support strength,the limit condition of the weak structural surface slid-ing is determined,the location and scope of the slip area is predicted,and the support to improve the stability of the weakstructural surface of the surrounding rock is strengthened.

关 键 词：缓倾斜 层状矿体 分层开采 围岩控制 

分 类 号：TD853[矿业工程—金属矿开采]