地下开采作用下反倾上硬下软型斜坡崩塌形成机制研究以贵州开阳磷矿崩塌为例

郑达 黄润秋 黄刚

郑达, 黄润秋, 黄刚. 2014: 地下开采作用下反倾上硬下软型斜坡崩塌形成机制研究以贵州开阳磷矿崩塌为例. 工程地质学报, 22(3): 464-473. doi: 10.13544/j.cnki.jeg.2014.03.016
引用本文: 郑达, 黄润秋, 黄刚. 2014: 地下开采作用下反倾上硬下软型斜坡崩塌形成机制研究以贵州开阳磷矿崩塌为例. 工程地质学报, 22(3): 464-473. doi: 10.13544/j.cnki.jeg.2014.03.016
ZHENG Da, HUANG Runqiu, HUANG Gang. 2014: MECHANISM OF ROCKFALL WITH ANTI-DIP AND TOP HARD-BOTTOM SOFT ROCK BY UNDERGROUND MININGA CASE STUDY OF ROCKFALL IN KAIYANG PHOSPHORITE, GUIZHOU. JOURNAL OF ENGINEERING GEOLOGY, 22(3): 464-473. doi: 10.13544/j.cnki.jeg.2014.03.016
Citation: ZHENG Da, HUANG Runqiu, HUANG Gang. 2014: MECHANISM OF ROCKFALL WITH ANTI-DIP AND TOP HARD-BOTTOM SOFT ROCK BY UNDERGROUND MININGA CASE STUDY OF ROCKFALL IN KAIYANG PHOSPHORITE, GUIZHOU. JOURNAL OF ENGINEERING GEOLOGY, 22(3): 464-473. doi: 10.13544/j.cnki.jeg.2014.03.016

地下开采作用下反倾上硬下软型斜坡崩塌形成机制研究以贵州开阳磷矿崩塌为例

doi: 10.13544/j.cnki.jeg.2014.03.016
基金项目: 

国家自然科学基金(41102191),地质灾害防治与地质环境保护国家重点实验室自主研究课题(SKLGP2011Z019),国家973项目(2013CB733202),国家:十二五科技支撑计划(2011BAK12B03)资助

详细信息
    作者简介:

    郑达,男,博士,副教授,主要从事岩土工程与地质工程专业的研究.Email:zhengda@cdut.cn

  • 中图分类号: P642.21

MECHANISM OF ROCKFALL WITH ANTI-DIP AND TOP HARD-BOTTOM SOFT ROCK BY UNDERGROUND MININGA CASE STUDY OF ROCKFALL IN KAIYANG PHOSPHORITE, GUIZHOU

  • 摘要: 以贵州开阳磷矿崩塌为例,通过对地质条件、采矿扰动与变形破坏特点的分析,阐明在地下开采作用下,反倾上硬下软型斜坡变形破坏的发展过程,并总结斜坡失稳破坏的3种模式,指出不同类型的破坏变形均以坡顶拉裂为前兆,而斜坡岩体结构特征是产生不同破坏模式的关键控制因素。进一步运用数值模拟与物理模拟方法,分析该类型崩塌的形成机理,认为反倾上硬下软型崩塌的形成具有特定的地质背景,动力条件与诱发因素,崩塌最终可能以急剧破坏的形式出现,但其发生并不是一蹴而就的,是经历了从发生、发展直至破坏的长期过程。从地下开采后采空区顶底板的变形,发展到地表裂缝的产生,崩塌的形成是地表裂缝沿着陡倾结构面追踪发展的过程,并受岩体结构特征的控制最终发生倾倒、突破锁固段剪出或沿中缓倾结构面滑塌。因此,对此类斜坡地质灾害的监测和防治必须把握前兆现象,加强早期识别与预警。
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出版历程
  • 收稿日期:  2014-03-04
  • 修回日期:  2014-05-12
  • 刊出日期:  2014-06-25

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