| 矿体倾角、几何形态及开采方式对充填体稳定性的影响 |
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| 引用本文： | 刘锋, 马凤山, 郭慧高, 寇永渊, 郭捷, 卢蓉. 2018: 矿体倾角、几何形态及开采方式对充填体稳定性的影响. 工程地质学报, 26(s1): 740-744. DOI: 10.13544/j.cnki.jeg.2018273 |
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| 作者姓名： | 刘锋 马凤山 郭慧高 寇永渊 郭捷 卢蓉 |
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| 作者单位： | 1.中国科学院地质与地球物理研究所, 中国科学院页岩气与地质工程重点实验室 北京 100029;;2.中国科学院地球科学研究院 北京 100029;;3.金川集团股份有限公司 金昌 737100 |
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| 基金项目： | 国家自然科学基金项目（41772341，41372323）资助 |
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| 摘 要： | 影响充填体稳定性因素很多，本文主要探究了矿体倾角、几何形态及开采方式对其影响。数值模拟结果表明，矿体倾角不仅影响充填体顶底板最大位移值的大小，同时对最大位移所在位置也有影响，最大位移位置与矿体倾角呈线性相关关系；相比于矿体倾角，矿体几何形态对充填体顶底板位移场影响更大；双中段开采可以有效减缓上部采空区的应力集中，有利于上部充填体稳定，但会加剧下部中段充填体的应力集中。
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| 关 键 词： | 矿体倾角 几何形态 开采方式 充填体稳定性 影响分析 |
| 收稿时间： | 2018-06-18 |
| 修稿时间： | 2018-07-24 |
ANALYSIS OF BACKFILL STABILITY INFLUENCE BY THE ORE-BODY DIP,GEOMETRICAL MORPHOLOGY AND MINING METHOD |
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| LIU Feng, MA Fengshan, GUO Huigao, KOU Yongyuan, GUO Jie, LU Rong. 2018: ANALYSIS OF BACKFILL STABILITY INFLUENCE BY THE ORE-BODY DIP, GEOMETRICAL MORPHOLOGY AND MINING METHOD. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 740-744. DOI: 10.13544/j.cnki.jeg.2018273 |
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| Authors: | LIU Feng MA Fengshan GUO Huigao KOU Yongyuan GUO Jie LU Rong |
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| Affiliation: | 1.Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;;2.Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029;;3.Jin Chuan Group Co. Ltd., Jinchang 737100 |
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| Abstract: | The influence factors analysis of backfill stability is complicated. This study focus on the dip of ore-body, geometrical morphology and mining method. The numerical simulation results showed:the dip of ore-body not only influence the maximum value of backfill footwall displacement, but influence its location. The relation of maximum displacement and the ore-body dip is linear. The geometrical morphology of ore-body has lager influence in the displacement distribution of backfill footwall. The mining operation in two sublevels at the same time could ease the stress concentration in mining void and make for the upper backfill stability. But this operation make the bottom backfill stress concentration more seriously. |
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| Keywords: | Ore-body dip Geometrical morphology Mining method Backfill stability Influence analysis |
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