马凤山, 李克蓬, 刘锋, 卢蓉, 岳斌, 雷扬. 2015: 金川二矿区充填体稳定性的影响因素分析. 工程地质学报, 23(s1): 504-508. DOI: 10.13544/j.cnki.jeg.2015.s1.077
    引用本文: 马凤山, 李克蓬, 刘锋, 卢蓉, 岳斌, 雷扬. 2015: 金川二矿区充填体稳定性的影响因素分析. 工程地质学报, 23(s1): 504-508. DOI: 10.13544/j.cnki.jeg.2015.s1.077
    MA Fengshan, LI Kepeng, LIU Feng, LU Rong, YUE Bin, LEI Yang. 2015: FACTORS OF FILL MASS STABILITY IN THE JINCHUAN NO.2 MINE. JOURNAL OF ENGINEERING GEOLOGY, 23(s1): 504-508. DOI: 10.13544/j.cnki.jeg.2015.s1.077
    Citation: MA Fengshan, LI Kepeng, LIU Feng, LU Rong, YUE Bin, LEI Yang. 2015: FACTORS OF FILL MASS STABILITY IN THE JINCHUAN NO.2 MINE. JOURNAL OF ENGINEERING GEOLOGY, 23(s1): 504-508. DOI: 10.13544/j.cnki.jeg.2015.s1.077

    金川二矿区充填体稳定性的影响因素分析

    FACTORS OF FILL MASS STABILITY IN THE JINCHUAN NO.2 MINE

    • 摘要: 充填采矿法以其高回收率、低贫化率的优点, 尤其在矿体赋存条件复杂、地表环境需要保护以及容易发生岩爆的矿床开采中具有不可替代的作用。金川二矿区数十年充填开采实践表明, 影响充填体稳定性的主要因素包括矿山工程地质条件、充填体强度、回采工艺以及围岩边界条件等, 其中充填体强度特性往往事关充填采矿工程的成败, 矿体回采进路尺寸是影响充填体承载层稳定性的关键因素, 充填体与围岩体的不规则边界可以转移充填体的部分自重力到围岩体中, 减小作用在承载层上的作用力, 从而达到提高充填体稳定性的目的。

       

      Abstract: With high selectivity and low dilution, Cut- and -fill stoping plays an irreplaceable role in deposit mining projects, especially in which occurrence conditions of orebody are complicated, surface environmental protection needed and rockburst easily triggered. Cut- and -fill mining practices of past decades demonstrated that the main factors affecting fill mass stability include engineering geological condition, back-fill strength, stoping technology and surrounding-rock boundary condition and so on. The back-fill strength is the key factor for success or failure of the backfilling project. And the dimension of orebody-stoping drift is the critical factor affecting fill mass supporting layer stability. The irregular boundaries between fill mass and surrounding rock can transfer part of the former self-gravity into the latter, reduce the load on the supporting layers, and then advance the stability of the fill mass.

       

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