多层矿床同阶段相邻矿层安全回采顺序分析

金属矿山 ›› 2015, Vol. 44 ›› Issue (07): 11-15.

多层矿床同阶段相邻矿层安全回采顺序分析

胡倩^1,2，叶义成^1,2，柯丽华^1,2，王其虎^1,2

1.武汉科技大学资源与环境工程学院，湖北武汉430081；2.湖北省页岩钒资源高效清洁利用工程技术研究中心，湖北武汉430081

出版日期:2015-07-15 发布日期:2015-08-06
基金资助:
* 国家自然科学基金项目（编号：51204127），湖北省科技支撑计划项目（编号：2014BCB033）。

Analysis of Safe Mining Sequence for Adjacent Seams Within the Same Stage of Multilayer Deposits

Hu Qian^1,2，Ye Yicheng^1,2，Ke Lihua^1,2，Wang Qihu^1,2

1.School of Resources and Environmental Engineering，Wuhan University of Science and Technology,Wuhan 430081，China；2.Hubei Provincial Engineering Technology Research Center of High Efficient Clean Utilization Shale Vanadium Resource，Wuhan 430081，China

Online:2015-07-15 Published:2015-08-06

摘要/Abstract

摘要： 回采顺序不同，其相邻矿层间的扰动影响差别很大，直接关系到矿床的安全开采。分析扰动影响高度对同阶段相邻矿层安全回采顺序的影响，当2层矿体同时从上至下开采、先开采上层矿后采下层矿和先开采下层矿后采上层矿时，探讨2矿层的超前关系及安全回采顺序。研究表明，不同赋存条件下的倾斜—急倾斜多层矿床都可以采用从上至下分层并行开采。在岩石移动角γ₁为60°~75°、矿层倾角α₂≤γ₁+5°、矿层间距a＞15 m或γ₁为45°~60°、α₂≤γ₁+25°、a＞20 m这2种赋存条件下，可以采用从上至下分段并行开采。在γ₁为45°~60°、α₂≤γ₁+10°、a＞5 m或γ₁为45°~60°，α₂≤γ₁+20°、a＞10 m这2种赋存条件下，2层矿体先开采上层矿后采下层矿，只能按分层或分段下向开采，上层矿开采最大可超于下层矿11个分层或1个分段；在γ₁为60°~75°、α₂≤γ₁+5°、a＞15 m或γ₁为45°~60°、α₂≤γ₁+25°、a＞20 m这2种赋存条件下，层矿开采最大可超于上层矿6个分层或1个分段。研究结果可为多层矿床阶段内开采顺序提供定量参考依据。

关键词: 多层矿床, 安全回采顺序, 阶段高度, 岩石移动角, 矿层倾角, 矿层间距

Abstract: Different mining sequence leads to the more difference of disturbance effect between adjacent seams，which directly relates to the safety of ore body mining.The impact of disturbance effect height on safe mining sequence between adjacent seams in the same stage was analyzed.The safe mining sequence and relationship in advance were discussed when two layers of ore body were mined from top to bottom at the same time or the lower ore was mined after the upper ore or the upper ore was mined after the lower ore.The study showed that tilt-steeply inclined multilayer ore body with different occurrence conditions can be mined in parallel layer by layer from top to bottom.The ore body can be mined in parallel piecewise from top to bottom when the rock movement angle(γ₁) is between 60° and 75° and ore body dip(α₂) meetsα₂≤γ₁+5° and the spacing of mine stratums(a) meets a＞15 m or the rock movement angle(γ₁) is between 45° and 60° and ore body dip(α₂) meets α₂≤γ₁+25° and the spacing of mine stratums(a) meets a＞20 m.When the rock movement angle(γ₁) is between 45°and 60° and ore body dip(α₂) meets α₂≤γ₁+10° and the spacing of mine stratums(a) meets a＞5 m or the rock movement angle(γ₁) is between 45°and 60° and ore body dip(α₂) meets α₂≤γ₁+20° and the spacing of mine stratums(a) meets a＞10 m，the lower ore should be mined after the upper ore as layer or segment from top to bottom.The upper ore can be mined 11 layers or 1 sublevels ahead of the lower ore.When the rock movement angle(γ₁) is between 60° and 75° and ore body dip(α₂) meets α₂≤γ₁+5° and the spacing of mine stratums(a) meets a＞15 m or the rock movement angle(γ₁) is between 45°~60° and ore body dip(α₂) meets α₂≤γ₁+25° and the spacing of mine stratums(a) meets a＞20 m，the lower ore can be mined 6 layers or 1 sublevel ahead of the upper ore.This study can provide quantitative reference basis for mining sequence of multilayer deposits in a stage.

Key words: Multilayer deposits, Safety mining sequence, Stage height, Rock movement angle, Ore body dip, Spacing of mine stratums

胡倩, 叶义成, 柯丽华, 王其虎. 多层矿床同阶段相邻矿层安全回采顺序分析[J]. 金属矿山, 2015, 44(07): 11-15.

HU Qian, YE Yi-Cheng, KE Li-Hua, WANG Qi-Hu. Analysis of Safe Mining Sequence for Adjacent Seams Within the Same Stage of Multilayer Deposits[J]. Metal Mine, 2015, 44(07): 11-15.

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