空场嗣后充填体稳定性分析与带式充填结构设计  

Stability Analysis on Subsequent Filling Body in Open Field and Design of Belt Filling Structure

作　　者：王谦源[1] 袁庆盟 林敏 王海龙[4] WANG Qianyuan;YUAN Qingmeng;LIN Min;WANG Hailong(School of Science,Qingdao University of Technology,Qingdao,Shandong 266033,China;Guangzhou Marine Geological Survey,Guangzhou,Guangdong 511400,China;Anhui Lujiang Longqiao Mining Co.,Ltd.,Hefei,Anhui 231551,China;Qingdao Polytechnic University Innovation Technology Co.,Ltd.,Qingdao,Shandong 266033,China)

机构地区：[1]青岛理工大学理学院,山东青岛市266033 [2]广州海洋地质调查局,广东广州511400 [3]安徽庐江龙桥矿业股份有限公司,安徽合肥231551 [4]青岛理工大学创新科技有限公司,山东青岛市266033

出　　处：《矿业研究与开发》2024年第6期26-33,共8页Mining Research and Development

摘　　要：针对中段矿房嗣后充填体的稳定性缺乏系统研究、充填体强度设计主要依靠经验和工程类比的现实问题,为提高嗣后充填体强度设计水平,根据某铁矿充填采矿实际,测定了不同充填配比的充填体力学参数,建立了连续7个矿房的大范围嗣后充填分析模型。通过数值模拟研究,获得了各步开采后一步骤充填体塑性区、应力、变形分布情况,并计算了充填体潜在滑移面的位置及演化规律,结果表明:一步骤充填体的失稳破坏部位主要在下部、腰部和顶部接顶区。对此,提出了带式充填结构设计,即嗣后充填不需要采用均质充填强度,应重点加强上、中、下三个薄弱部位,其他充填区可用较低强度充填。分析表明:这种带式充填结构的整体稳定性好,并可较大幅度地降低充填成本。The stability of the subsequent filling body in the mid-segment mining of the rooms lacks systematic research,and the strength design of the filling body mainly relies on experience and engineering analogy.In response to this issue,in order to improve the strength design level of the subsequent filling body,the mechanical parameters of the filling body with different filling ratios were measured based on the actual filling mining of a certain iron mine,and a large-scale subsequent filling analysis model for evaluating consecutive backfill operations across seven mine rooms was established.Through numerical simulation research,the plastic zone,stress,and deformation distribution of the first-step filling body after each mining step were obtained,and the position and evolution law of the potential sliding surface of the filling body were calculated.The results show that the instability and failure of the filling body in the first step occurs in the lower sections,around the midsection,and near the ceiling.In this regard,a belt filling structure design was proposed,which means that subsequent filling does not require the use of homogeneous filling strength,and should focus on strengthening the upper,middle,and lower weak areas,while other filling areas can be filled with a lower strength.Analysis shows that this belt filling structure has a good overall stability and can significantly reduce filling costs.

关 键 词：充填体强度 中段采矿 嗣后充填 带式充填结构 数值模拟 

分 类 号：TD853[矿业工程—金属矿开采]