嗣后充填松散尾砂侧压力计算方法  

Computing Method of Lateral Pressure of Incompact Milltailings with Subsequent Filling

作　　者：王俊[1] 乔登攀[1] 李广涛[1,2] 孙宏生[2] 童汝彦[2] 

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]玉溪矿业有限公司,云南玉溪651300

出　　处：《昆明理工大学学报（自然科学版）》2016年第5期27-32,共6页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(51164016);甘肃省科技重大专项计划项目(1203GKDC003)

摘　　要：高阶段空场嗣后充填采矿法一般为两步骤回采,一步矿房回采结束后进行胶结充填,为二步矿房回采提供安全可靠的作业环境.在二步矿房回采过程中,一步胶结充填体受二步松散充填体(尾砂)的压力,很大程度上影响了一步胶结充填体的稳定性.因此,在设计胶结充填体所需强度时,应定量计算二步尾砂充填体对一步胶结充填体的侧向压力,为胶结充填体的强度设计提供理论依据.论文从莫尔-库伦准则和极限平衡法两个方面分别建立了尾砂侧向压力的力学模型,并推导出了计算尾砂侧向压力的理论公式.并通过实验分析了理论计算值与实测值之间的差距,确定了两个理论模型的适用性.Generally,the extraction of high level open stoping with subsequent fill is divided into two steps. After finishing the first extraction of ore room,the goaf is filled with cemented filling material to provide safe and reliable work environment for the extraction of the second ore room. In the process of the extraction of the second ore room,the lateral pressure of the incompact filling material will act on the first step cemented filling body and affect the stability of the cemented filling body. For this reason,the lateral pressure that the tailings filling body act on the cemented filling body should be calculated to provide theoretical basis for the strength design of the cemented filling body. According to Mohr- coulomb criterion and limiting equilibrium method,the mechanical models of the lateral pressure of the tailings filling body are established respectively,and the theoretical formula to calculate the lateral pressure of the tailings are then deduced. The gap between calculated values and measured values is analyzed,and the applicability of the theoretical is thus confirmed.

关 键 词：胶结充填体 尾砂充填体 侧向压力 

分 类 号：TD853[矿业工程—金属矿开采]