丰树山滑坡成因分析及综合治理措施

王贤能; 王麒诺; 石洋海

doi:10.20265/j.cnki.issn.1007-2993.2024-0162

丰树山滑坡成因分析及综合治理措施

doi: 10.20265/j.cnki.issn.1007-2993.2024-0162

1.
深圳市工勘岩土集团有限公司，广东深圳　518057
2.
深圳实验学校高中园，广东深圳　518118

详细信息

作者简介:
王贤能，男，1969年生，博士，正高级工程师，主要从事岩土工程和地质灾害防治工程。E-mail：1735150767@qq.com

中图分类号: P642
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- 文章访问数: 18
- HTML全文浏览量: 3
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2024-04-12
- 修回日期: 2024-10-31
- 录用日期: 2025-01-02
- 网络出版日期: 2025-08-08
- 刊出日期: 2025-08-08

Cause analysis and comprehensive treatment of the Fengshushan landslide

1.
Shenzhen Geokey Group Co., Ltd., Shenzhen 518057, Guangdong, China
2.
The High School Park of Shenzhen Experimental School, Shenzhen 518118, Guangdong, China

摘要

摘要: 丰树山滑坡是一起因工程建设切坡引发的牵引式滑坡。通过地质调查、钻探、井探、土工试验以及综合分析等方法，查明了滑坡发育过程、滑坡的基本特征和断裂带的岩土特性，系统分析研究了滑坡稳定性和变形活动趋势，提出了削坡减载、设置抗滑桩+锚索（锚杆）框架梁联合支护结构、完善的截排水系统、坡面复绿综合治理措施。结果表明：研究区内地质条件复杂，断裂构造发育，构造带内地下水较发育，由断裂构造岩风化残积而成的粉质黏土力学性质软弱，是滑坡形成的重要条件；开挖坡脚、持续性强降雨是滑坡形成的主要诱因。研究成果可为城市地质调查、类似滑坡工程防治提供参考。
- 丰树山滑坡 /
- 牵引式滑坡 /
- 断裂带的岩土特性 /
- 持续性强降雨
Abstract: The Fengshushan landslide is a traction landslide caused by a cutting slope of engineering construction. Through geological survey, drilling, well exploration, soil test, and comprehensive analysis, the development process of landslide, the basic characteristics of landslide, and the geotechnical characteristics of fault zone were found out, and the stability and deformation trend of landslide were systematically analyzed. Comprehensive treatment measures such as cutting slope and reducing load, setting up the anti-slide pile and anchor cable (anchor rod) frame beam combined support structure, drainage system improvement, and slope greening were put forward. The results show that the geological conditions in the study area are complex, faults are developed and groundwater is abundant in the tectonic belt. The mechanical properties of the silty clay formed from the weathering of the fault structural rock are weak, which are the important conditions for the formation of landslides. Excavation of slope feet and continuous heavy rainfall are the main inducement of landslides. The research results provide a reference for urban geological surveys and similar landslide engineering prevention.
- the Fengshushan landslide /
- traction landslide /
- geotechnical characteristics of fault zone /
- continuous heavy rainfall

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图 1 丰树山滑坡平面示意图及勘探点布置

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图 2 丰树山滑坡实景

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图 3 滑坡勘查揭露的断裂迹象

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图 4 井探点揭示的滑动面

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图 5 丰树山滑坡典型剖面图及加固治理剖面图

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图 6 丰树山滑坡各阶段暴雨工况下坡体塑性应变云图

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图 7 丰树山公交场站段路堑边坡支护剖面图

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图 8 丰树山滑坡生态修复实景

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表 1 岩土体物理力学参数取值表

岩土层名称	饱水状态			弹性模量 E₀/MPa	泊松比
岩土层名称	重度 /（kN·m⁻³）	黏聚力 c/kPa	内摩擦角 φ/(°)	弹性模量 E₀/MPa	泊松比
碎块石质黏性土	18.5	13.4	20.0	10	0.25
砂质黏性土	19.0	15.0	19.6	15	0.25
粉质黏土	19.0	13.5	17.0	12	0.30
全风化岩	19.5	15.6	21.1	25	0.25
强风化岩	20.0	32.0	27.0	30	0.23
中等风化岩	21.0	200.0	36.0	3500	0.21
微风化岩	23.5	700.0	43.0	20000	0.20
滑带土	19.0	12.0	15.5	10	0.32
抗滑桩	25.0			30000	0.20

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表 2 丰树山滑坡治理工程变形监测结果 mm

监测项目	范围值	平均值	控制值
坡顶及平台水平位移	0.33～30.61	10.95	50
坡顶及平台沉降	0.73～42.75	13.51	50
抗滑桩桩顶水平位移	3.12～24.59	12.49	45

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