缓倾斜近距离双层磷矿房柱法开采矿柱稳定性研究

金属矿山 ›› 2025, Vol. 54 ›› Issue (10): 20-29.

缓倾斜近距离双层磷矿房柱法开采矿柱稳定性研究

罗斌玉¹　李大忠¹　刘晓云^1,2　苏　辕¹　李鹏程³　杨世荣⁴

1. 武汉科技大学资源与环境工程学院,湖北武汉 430081; 2. 武汉科技大学材料学部,湖北武汉 430081;
3. 金属矿山开采安全与灾害防治全国重点实验室;安徽马鞍山 243000;4. 湖北宜化集团矿业有限公司,湖北宜昌 443100

出版日期:2025-10-15 发布日期:2025-11-04
通讯作者: 刘晓云(1985—),男,副教授,硕士研究生导师。
作者简介:罗斌玉(1990—),男,讲师,硕士研究生导师。
基金资助:
湖北省自然科学基金青年项目(编号:2024AFB281);湖北省应急管理厅安全生产专项资金项目(编号:SJZX20220907);武汉市知识创
新专项项目(曙光计划项目)(编号:2022010801020307)。

Study on the Stability of Pillars in the Room-and-Pillar Mining of Gently Inclined Close-distance Double-layer Phosphate Deposits#br#

LUO Binyu¹　LI Dazhong¹　LIU Xiaoyun^1,2　SU Yuan¹　LI Pengcheng³　YANG Shirong⁴

1. School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;
2. Department of Materials Science,Wuhan University of Science and Technology,Wuhan 430081,China;
3. State Key Laboratory of Metal Mine Mining Safety and Disaster Prevention and Control,Maanshan 243000,China;
4. Hubei Yihua Group Mining Co. ,Ltd. ,Yichang 443100,China

Online:2025-10-15 Published:2025-11-04

摘要/Abstract

摘要： 缓倾斜近距离双层磷矿房柱法开采中,受二次采动影响,矿柱失稳风险增大,威胁矿山安全生产。以鄂
西某缓倾斜双层磷矿为背景,探究矿层倾角、夹层厚度、矿柱对齐方式三因素共同影响下矿柱的稳定性。设计三因素
四水平正交试验方案,开展16 种工况的数值模拟;采用考虑倾角因素的矿柱强度经验公式,通过fish 语言编写安全系
数公式,计算得到每种工况下采场中各矿柱的安全系数;然后对上下层矿柱稳定性因素进行方差分析,分析夹层厚度
和上下层矿柱偏移率对矿柱稳定性的影响。结果显示,采场中矿柱安全系数均呈现“非对称式盆状”,下层采场矿柱
安全系数较上层低,受倾角影响,矿柱出现明显的剪切破坏;夹层厚度变大后,矿柱间相互扰动变小,矿柱稳定性主要
受矿层埋深影响;矿柱偏移率增大,矿柱安全系数呈现先减小后增大再减小的趋势。研究为双层矿房柱法开采矿柱
设计与稳定性分析提供参考。

关键词: 双层磷矿　矿层倾角　夹层厚度　矿柱　稳定性

Abstract: In the room-and-pillar mining of gently inclined close-distance double-layer phosphate rock,the risk of pillar
instability increases due to the influence of secondary mining,which threatens the safe production of the mine. Taking a gently
inclined double-layer phosphate rock in western Hubei as the background,the stability of the pillar under the influence of the
three factors of the dip angle of the ore layer,the thickness of the interlayer and the alignment mode of the pillar is explored.
A three-factor four-level orthogonal test scheme was designed to carry out numerical simulation of 16 working conditions. Using
the empirical formula of pillar strength considering the dip angle factor,the safety factor formula is written by fish language,and
the safety factor of each pillar in the stope under each working condition is calculated. Then,the variance analysis of the stability
factors of the upper and lower pillars is carried out to analyze the influence of the interlayer thickness and the offset rate of
the upper and lower pillars on the stability of the pillars. The results show that the safety factor of the pillars in the stope is
′asymmetric basin′,and the safety factor of the pillars in the lower stope is lower than that in the upper stope. Affected by the
dip angle,the pillars have obvious shear failure. After the thickness of the interlayer becomes larger,the mutual disturbance between
the pillars becomes smaller,and the stability of the pillars is mainly affected by the buried depth of the ore layer. With
the increase of the offset rate of the pillar,the safety factor of the pillar decreases first,then increases and then decreases. The
research provides a reference for pillar design and stability analysis of double-layer room-and-pillar mining.

Key words: double-layer phosphate deposits,dip angle of the ore layer,thickness of the interlayer,ore column,stability

中图分类号:

TD803

罗斌玉　李大忠　刘晓云, 　苏　辕　李鹏程　杨世荣. 缓倾斜近距离双层磷矿房柱法开采矿柱稳定性研究[J]. 金属矿山, 2025, 54(10): 20-29.

LUO Binyu　LI Dazhong　LIU Xiaoyun, 　SU Yuan　LI Pengcheng　YANG Shirong. Study on the Stability of Pillars in the Room-and-Pillar Mining of Gently Inclined Close-distance Double-layer Phosphate Deposits#br#[J]. Metal Mine, 2025, 54(10): 20-29.

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