| 落凼矿分段空场嗣后充填法采场结构参数研究 |
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| 引用本文： | 贾学元,乔登攀,何名声,王 俊,李广涛,杨天雨.落凼矿分段空场嗣后充填法采场结构参数研究[J].有色金属(矿山部分),2021,73(6):93-98. |
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| 作者姓名： | 贾学元 乔登攀 何名声 王 俊 李广涛 杨天雨 |
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| 作者单位： | 昆明理工大学 国土资源工程学院,昆明理工大学 国土资源工程学院,凉山矿业股份有限公司,昆明理工大学 国土资源工程学院,昆明理工大学 国土资源工程学院,昆明理工大学 国土资源工程学院 |
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| 基金项目： | 云南省基础研究专项-青年项目（202101AU070022）；昆明理工大学人培基金（KKZ3202021040）；昆明理工大学人培基金（KKSY201921017） |
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| 摘 要： | 分段空场嗣后充填法是两步骤开采，采场结构参数主要是指一步骤矿柱与二步骤矿房的结构尺寸。针对拉拉铜矿落凼矿区深部矿段地下开采遇到高地压释放致采场结构不稳定问题，采用RHINO-FLAC3D进行数值模拟的方法对矿区的采场结构参数进行研究。对落凼矿矿体厚度在30m以上的倾斜及急倾斜矿体采用两种不同的采场结构参数方案进行对比，用Flac3D模拟开挖，对采区内的塑性区进行统计与分析。研究结果表明：随着采深的加大，针对该矿矿体厚度在30m以上的倾斜及急倾斜矿体，一步骤矿柱采用50m×11m，二步骤矿房采用50m×25m的结构参数更加安全稳定。
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| 关 键 词： | 分段空场嗣后充填法 塑性区 采场结构参数 Flac3D数值模拟 |
| 收稿时间： | 2021/6/25 0:00:00 |
| 修稿时间： | 2021/7/5 0:00:00 |
Study on structural parameters of stope with sublevel open stope and subsequent filling in Luodang mine |
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| Authors: | JIA Xueyuan QIAO Dengpan HE Mingsheng WANG Jun LI Guangtao and YANG Tianyu |
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| Affiliation: | School of Land Resources Engineering, Kunming University of Science and Technology,School of Land Resources Engineering, Kunming University of Science and Technology,Liangshan Mining Co,Ltd, Liangshan Sichuan , China),School of Land Resources Engineering, Kunming University of Science and Technology,School of Land Resources Engineering, Kunming University of Science and Technology,School of Land Resources Engineering, Kunming University of Science and Technology |
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| Abstract: | Sublevel open stope and subsequent filling is a two-step mining method,stope structural parameters mainly refer to the structural dimensions of one-step pillar and two-step room. Aiming at the instability of stope structure caused by high ground pressure release during underground mining in Luodang mining area of Lala copper mine, the numerical simulation method of RHINO-FLAC3d was used to study the stope structure parameters of the mining area. Two different schemes of stope structure parameters are used to compare the inclined and steeply inclined ore bodies with ore body thickness of more than 30m in Luodang mine. FLAC3D is used to simulate the excavation, and the statistics and analysis of the plastic zone in the mining area are carried out. The results show that: with the increase of mining depth, for the inclined and steeply inclined ore body with the thickness of more than 30m, 50m × 11m pillar is adopted in one step, 50m× 25m for two-step room is more safe and stable. |
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