摘要
为了研究阶段空场嗣后充填采矿法中单侧揭露后侧受压状态下胶结充填体的稳定性,根据胶结充填体、围岩和非胶结充填体三者之间力学作用关系,建立了更加符合现场实际的胶结充填体在单侧揭露后侧受压状态下三维力学模型,并同经典解析法计算结果进行比较。研究结果表明:在设计单侧揭露后侧受压胶结充填体强度时,采用自立性人工矿柱模型是不足的,应当考虑后侧非胶结体受压作用、自身尺寸、充填体与围岩之间有效摩擦力和顶部外荷载等因素。
In order to study the stability of cemented backfill under the condition of unilateral exposing and the posterior compressive state in stage open stope method with subsequent filling,and according to the mechanical interaction among the cemented backfill,the surrounding rock and the non-cemented backfill,the more practical three-dimensional mechanical model of the cemented backfill in the state of unilateral exposure and posterior compression is established and compared with the classical analytic method. The results show that it is insufficient to use the self-supporting human mining pillar model in the design of strength of cemented backfill with single side exposing and the posterior compression. It should consider such factors as the compressive action,the size of the backfill side,the effective friction force between the backfill body and the surrounding rock,and the top external load.
作者
王瑞鹏
金爱兵
吴振坤
高永涛
张金
Wang Ruipeng;Jin Aibing;Wu Zhenkun;Gao Yongtao;Zhang Jin(School of Civil and Environment Engineering,University of Science and Technology Beifing,Beijing 100083 China;Key Laboratory of High-Effwient Mining and Safety of Metal Mines of Ministry of Education,Beijing 100083,China;Shandong Jinding Mining Co.,Ltd.,Zibo 255000,China)
出处
《金属矿山》
CAS
北大核心
2018年第8期23-28,共6页
Metal Mine
基金
国家自然科学基金资助项目(编号:51374032
51674015)
科技北京百名领军人才培养工程项目(编号:Z151100000315014)
关键词
单侧揭露
后侧受压
充填体
稳定性
力学模型
Unilateral exposure
Posterior compression
Backfill
Stability
Mechanical model
