川东红层缓倾角岩质崩塌特征与稳定性分析

王军朝; 孙金辉

doi:10.12090/j.issn.1006-6616.2019.25.06.092

川东红层缓倾角岩质崩塌特征与稳定性分析

doi: 10.12090/j.issn.1006-6616.2019.25.06.092

王军朝^{1, 2,},
孙金辉^{1, 2}

1.
中国地质科学院探矿工艺研究所, 四川成都 611734
2.
中国地质调查局地质灾害防治技术中心, 四川成都 611734

基金项目:

中国地质调查局项目 DD20160729

中国地质调查局项目 12120113011200

详细信息

作者简介:
王军朝(1973-), 高级工程师, 主要从事地质灾害调查及防治技术方面的研究。E-mail:wjunchao@mail.cgs.gov.cn

中图分类号: X43
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- 文章访问数: 157
- HTML全文浏览量: 57
- PDF下载量: 19
- 被引次数: 0
出版历程
- 收稿日期: 2018-07-17
- 修回日期: 2019-07-07
- 刊出日期: 2019-12-28

CHARACTERISTICS AND STABILITY ANALYSIS OF ROCK COLLAPSE OF LOW-ANGLED RED-BED SLOPE IN EAST SICHUAN

WANG Junchao^{1, 2
,},
SUN Jinhui^{1, 2}

1.
Institute of Exploration Technology, CAGS, Chengdu 611734, Sichuan, China
2.
Technical Center for Geological Hazard Prevention and Control, CGS, Chengdu 611734, Sichuan, China

摘要

摘要: 川东地区出露一套湖相、河流相等红色碎屑岩，普遍发育着缓倾角岩质斜坡结构，由于其特殊工程特征和环境条件致使地质灾害频发，其中崩塌是主要灾害形式之一，并对人居安全与交通、城镇建设等具有较大危害。通过总结分析已有研究成果并结合大量野外工程地质测绘与岩体力学原理分析，提出基于川东地区环境背景条件的贯通型倾倒式、贯通型滑移式、非贯通型错断式和非贯通型拉裂式的四种基本崩塌类型，并对其岩性组合、斜坡结构特征、演变过程和安全性定量计算等进行系统总结，可为区内同类灾害的防治与研究提供借鉴与参考。
- 川东红层 /
- 缓倾角岩质边坡 /
- 贯通型与非贯通结构 /
- 崩塌 /
- 稳定性分析
Abstract: A set of lacustrine and fluvial red clastic sedimentary rocks are exposed in east Sichuan, and the slope structures with low dip angles are widely distributed. Due to its special engineering characteristics and environmental conditions, geological hazards occur frequently, among which collapse is one of the main forms and a great threat to the safety of local residents, transportation, urban construction. By summarizing the previous research results and analyzing a lot of engineering mapping and geotechnical mechanics in the field, we proposed four kinds of basic collapse types based on the environment background conditions in east Sichuan, which are penetrating-topple, penetrating-slide, non-penetrating-shearfault and non-penetrating-pullfault. Their lithologic association characteristics, slope structure characteristics, evolution process and security quantitative evaluation are summarized systematically, which provide reference for the treatment and research of similar geological hazard in the region.
- red-bed in east Sichuan /
- low-angled rock slope /
- penetrating and unpenetrating structure /
- collapse /
- stability analysis
注释:

责任编辑：吴芳

HTML全文

图 1 红层泥岩粉晶X射线物相分析

Figure 1. X-ray phase analysis of red-bed mudstone powder crystal

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图 2 不同岩性组合典型照片

Figure 2. Typical photos of different lithologic association

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图 3 川东缓倾角岩质边坡斜坡结构典型特征图

Figure 3. Typical characteristic diagram of low-angled rock slope in east Sichuan

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图 4 四川盆地川东红层及崩塌灾害分布示意图

Figure 4. Diagram of the distribution of red-beds and collapses in east Sichuan Basin

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图 5 贯通型-倾倒式崩塌实测剖面

Figure 5. Diagram of measured section of penetrating-topple collapse

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图 6 贯通型-倾倒式崩塌力学模型

Figure 6. Mechanical model of penetrating-topple collapse

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图 7 贯通型-滑移式崩塌实测剖面图

Figure 7. Diagram of measured section of penetrating-slide collapse

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图 8 贯通型-滑移式崩塌力学模型

Figure 8. Mechanical model of penetrating-slide collapse

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图 9 非贯通型-错断式崩塌实测剖面图

Figure 9. Diagram of measured section of unpenetrating-shearfault collapse

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图 10 非贯通型-错断式崩塌计算模型

Figure 10. Mechanical model of unpenetrating-shearfault collapse

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图 11 非贯通型-拉裂式崩塌实测剖面图

Figure 11. Diagram of measured section of unpenetrating-pullfault collapse

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图 12 非贯通型-拉裂式崩塌计算模型

Figure 12. Mechanical model of unpenetrating-pullfault collapse

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图 13 川东缓倾角岩质斜坡安全性计算流程图

Figure 13. Flow chart of stability calculation of low-angled red-bed rock slope in east Sichuan

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