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

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

地质灾害防治与地质环境保护国家重点实验室成都理工大学成都 610059

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
计量
- 文章访问数: 3380
- HTML全文浏览量: 237
- PDF下载量: 921
- 被引次数: 0
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

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

Sate Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059

摘要

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。
- 地下开采 /
- 崩塌 /
- 形成机理 /
- 上硬下软型 /
- 磷矿
Abstract: This paper takes Kaiyang phosphorite rockfall in Guizhou for example. It analyzes the geological conditions,mining exploitation and failure characteristics. It then develops the process of rockfall deformation with anti-dip and top hard-bottom soft rock. The formation mechanism of this type rockfall is studied through numerical simulation and physical simulation. The results show that this rockfall is induced by specific geological background,dynamic conditions and predisposing factors. Especially,there is a long development process from occurrence to destroy. A rapid destruction form is presented finally. They are specifically deformation of the roof and floor rock in the mine area,appearance of cracks on the top of slope and development of cracks along the steep joints in the slope. There are three failure modes: crack-toppling,crack-slide and crack-shear. Therefore,the key about monitoring and prevention of geological disasters to this type rockfall is precursory information for enhancing early identification and warning.
- Underground mining /
- Rockfall /
- Formation mechanism /
- Top hard-bottom soft rock /
- Phosphorite

HTML全文

参考文献(1)

[1] 黄刚, 郑达.贵州开阳磷矿山体崩塌形成机理与数值模拟[J].中国地质灾害与防治学报, 2013, 24 (1): 46～50, 55.Huang Gang, Zheng Da.Research on formation mechanism and numerical simulation of rockfall in Kaiyang phosphorite, Guizhou province.The Chinese Journal of Geological Hazard and Control, 2013, 24 (1): 46～50, 55.

[2] 彭红明.贵州省开阳磷矿洋水矿区崩塌形成机理研究[D].成都:成都理工大学, 2012.Peng Hongming.Research on Formation Mechanism of Yangshui Mining Area Collapse of Kaiyang Phosphate in Guizhou.Chengdu: Chengdu University of Technology, 2012.

[3] 孙玉科, 姚宝魁.盐池河磷矿山体崩坍破坏机制的研究[J].水文地质工程地质, 1983, (1): 1～7.Sun Yuke, Yao Baokui.Research on failure mechanism of rockfall in the Yanchi river phosphorite.Hydrogeology and Engineering Geology, 1983, (1): 1～7.

[4] 黄润秋.中国西部地区典型岩质滑坡机理研究[J].地球科学进展, 2004, 19 (3): 443～450.Huang Runqiu.Mechanism of large scale landslides in western China.Advance in Earth Sciences, 2004, 19 (3): 443～450.

[5] 许强, 黄润秋,殷跃平,等.2009a"6·5"重庆武隆鸡尾山崩滑灾害基本特征与成因机制初步研究[J].工程地质学报, 2009, 17 (4): 432～444.Xu Qiang, Huang Runqiu, Yin Yueping, et al.The Jiweishan landslide of June 5, 2009 in Wulong, Chongqing: characteristics and failure mechanism.Journal of Engineering Geology, 2009, 17 (4): 432～444.

[6] 殷跃平.斜倾厚层山体滑坡视向滑动机制研究——以重庆武隆鸡尾山滑坡为例[J].岩石力学与工程学报, 2010, 29 (2): 217～226.Yin Yueping.Mechanism of apparent dip slide of inclined bedding rockslide—A case study of Jiweishan rockslide in Wulong, Chongqing.Chinese Journal of Rock Mechanics and Engineering, 2010, 29 (2): 217～226.

[7] 刘传正.重庆武隆鸡尾山危岩体形成与崩塌成因分析[J].工程地质学报, 2010, 18 (3): 297～304.Liu Chuanzheng.Mechanism analysis on the Jiweishan rockfall disaster happened in Wulong, Chongqing, June, 5, 2009.Journal of Engineering Geology, 2010, 18 (3): 297～304.

[8] 吴瑾, 黄仁雄,邹启学,等.贵州开阳磷矿区崩塌及其防治[J]中国地质灾害与防治学报, 2011, 22 (3): 27～32.Wu Jin, Huang Renxiong, Zou Qixue, et al.Rock falls and their prevention in phosphorus mining area of Kaiyang county, Guizhou province.The Chinese Journal of Geological Hazard and Control, 2011, 22 (3): 27～32.

[9] 赵伟华,黄润秋,赵建军,等.强震条件下碎裂岩体崩塌机理及崩塌后壁对堆积体稳定性影响研究[J].工程地质学报, 2011, 19 (2): 205～212.Zhao Weihua, Huang Runqiu, Zhao Jianjun, et al.Rockfall mechanism of cataclastic rock mass and influence of back wall upon the stability of accumulation under strong earthquake.Journal of Engineering Geology, 2011, 19 (2): 205～212.

[10] 黄刚.采空条件下岩质边坡变形破坏机理研究——以贵州省大方县云龙山变形体为例[D].成都:成都理工大学, 2013.Huang Gang.Research of the Mechanism of Deformation and Failure of Rock Slope above the Underground Goaf-Taking the Deformable Body of Yunlong Mountain in Dafang County of Guizhou Province as an Example.Chengdu: Chengdu University of Technology, 2013.

[11] 丁坚平,李扬,储学伟,等.贵州开阳县龙井湾崩塌地质灾害评估及防治[J].中国地质灾害与防治学报, 2006, 17 (4): 21～24.Ding Jianping, Li Yang, Chu Xuewei, et al.Evaluation and prevention of rock fall in Longjingwan, Guizhou province.The Chinese Journal of Geological Hazard and Control, 2006, 17 (4): 21～24.

[12] 李霍, 巨能攀, 郑达, 等.贵州上洋水河流域拉裂—倾倒型崩塌机理研究[J].工程地质学报, 2013, 21 (2): 289～296.Li Huo, Ju Nengpan, Zheng Da, et al.Mechanism of rockfall with crock-toppling mode at upstream of Yangshui river basin in Guizhou province.Journal of Engineering Geology, 2013, 21 (2): 289～296.

[13] 董金玉, 杨继红,伍法权,等.三峡库区软硬互层近水平地层高切坡崩塌研究[J].岩土力学, 2010, 31 (1): 151～157.Dong Jinyu, Yang Jihong, Wu Faquan, et al.Research on collapse of high cutting slope with horizontal soft-hard alternant strata in three gorges reservoir area.Rock and Soil Mechanics, 2010, 31 (1): 151～157.

[14] 黄平路, 陈从新,肖国峰,等.复杂地质条件下矿山地下开采地表变形规律的研究[J].岩土力学, 2009, 30 (10): 3020～3024.Huang Pinglu, Chen Congxin, Xiao Guofeng, et al.Study of rock movement caused by underground mining in mines with complicated geological conditions.Rock and Soil Mechanics, 2009, 30 (10): 3020～3024.

[15] 杨忠民,黄国明.地下采动诱发斜坡变形机理[J].西安矿业学院学报, 1999, 19 (2): 105～109.Yang Zhongmin, Huang Guoming.Deformation mechanism of declivity caused by underground mining movement.Journal of Xi'an Mining Institute, 1999, 19 (2): 105～109.

[16] 邓广哲.矿山高陡边坡崩塌灾害演化的成因分析[J].岩土力学, 2005, 26 (增1): 45～48.Deng Guangzhe.Cause analysis of landslip disaster evolvement of high hilly slope in mine.Rock and Soil Mechanics, 2005, 26 (S1): 45～48.

[17] 陈智强, 李渝生.重庆市南川甑子岩危岩形成演化机制分析及防治措施探讨[J].中国地质灾害与防治学报, 2004, 15 (1): 78～81.Chen Zhiqiang, Li Yusheng.Analysis on formation and development mechanism and discussion on prevention measures for Zenziyan dangerous rock mass in Chongqing.The Chinese Journal of Geological Hazard and Control, 2004, 15 (1): 78～81.

[18] 纪玉石, 申力,刘晶辉.采矿引起的倾倒滑移变形机理及其控制[J].岩石力学与工程学报, 2005, 24 (19): 3594～3598.Ji Yushi, Shen Li, Liu Jinghui.Deformation mechanism and control of mining induced toppling-displacement.Chinese Journal of Rock Mechanics and Engineering, 2005, 24 (19): 3594～3598.

施引文献

资源附件(0)

访问统计