缓倾斜多层矿床充填法开采围岩变形及回采顺序试验研究

采矿与安全工程学报 ›› 2015, Vol. 32 ›› Issue (3): 407-413.

缓倾斜多层矿床充填法开采围岩变形及回采顺序试验研究

武汉科技大学湖北省页岩钒资源高效清洁利用工程技术研究中心，资源与环境工程学院，湖北武汉 430081

收稿日期:2014-01-08 出版日期:2015-05-15 发布日期:2015-06-12
作者简介:叶义成(1960—)，男，湖北省汉川市人，教授，博士生导师，从事采矿工程及安全工程方面的研究。
基金资助:
国家“十二五”科技支撑计划项目(2011BAB05B03)；国家自然科学基金项目(51074115)

Experimental study of deformation of wall rock and stoping sequence in mining gently inclined and multilayer deposits by backfill mining

Received:2014-01-08 Online:2015-05-15 Published:2015-06-12

摘要/Abstract

摘要： 根据缓倾斜多层矿床特征，构建物理相似材料模型，采用相似模拟试验方法，研究前进式和后退式回采顺序开采矿床的围岩应变变化、巷道围岩应变变化和地表沉降及其演变规律，探讨嗣后充填采矿法回采上横山矿合理的回采顺序。结果表明：围岩的变形破坏依矿、岩层不同呈现出明显的不连续性和间歇性，矿、岩层边界附近应变变化梯度较大；前进式回采较后退式回采拉应变状态区域少15.28%；随采场与巷道间距的增加，巷道顶板和近矿体侧帮应变状态具有压应变向拉应变变化的趋势；地表沉降范围具有不以采空区为中心对称的特点。前进式回采顺序是较好的回采顺序。

关键词: 缓倾斜多层矿床, 围岩, 变形, 回采顺序, 充填采矿法, 相似试验

Abstract: Based on the characteristics of gently inclined and multilayer ore body, a similitude material model has been constructed through similar simulation experiment, to analyze its strain variation of stope and roadway surrounding rock, surface subsidence deformation characteristics in advancing and retreating filling stoping mining and discuss the reasonable mining sequence in mining Shanghengshan mine by subsequent filling method. The result shows that the deformation of surrounding rock has obvious characteristics of intermittency and discontinuousness in different strata, and strain near the rock and ore body contact area has greater gradient variation. The tensile strain area in advancing mining is 15.28% less than that of retreating mining. The strain state in tunnel roof and sidewall far from the ore tends to change from compressed to tensed one with the distance between stope and tunnel increasing. In addition, the ground settlement range is not symmetrical centered with the gob. The advancing mining method is one of the better mining sequences.

Key words: gently inclined and multilayer deposits, wall rock, deformation, mining sequence, backfill mining, similarity simulation

叶义成，施耀斌，王其虎，刘艳章，姚囝，鲁方. 缓倾斜多层矿床充填法开采围岩变形及回采顺序试验研究[J]. 采矿与安全工程学报, 2015, 32(3): 407-413.

YE Yicheng，SHI Yaobin，WANG Qihu，LIU Yanzhang，YAO Nan，LU Fang. Experimental study of deformation of wall rock and stoping sequence in mining gently inclined and multilayer deposits by backfill mining[J]. Journal of Mining & Safety Engineering, 2015, 32(3): 407-413.

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