强降雨作用下边(滑)坡稳定性分析及预警技术研究

朱志铭; 周凯睿; 谭春洪; 边菁生; 魏源; 邹祖银

强降雨作用下边(滑)坡稳定性分析及预警技术研究

四川农业大学城乡建设学院, 四川都江堰 611830

基金项目:

四川农业大学“大学生创新性实验计划”项目 121062672

详细信息

作者简介:
朱志铭(1988-), 男, 四川农业大学城乡建设学院土木工程专业本科生。E-mail:1960415816@qq.com

通讯作者:
邹祖银(1974-), 男, 副教授, 在读博士, 主要从事道路与铁道工程的科研和教学工作。E-mail:zouzyin@gmail.com

中图分类号: P642.22
计量
- 文章访问数: 214
- HTML全文浏览量: 145
- PDF下载量: 22
- 被引次数: 0
出版历程
- 收稿日期: 2013-06-02
- 刊出日期: 2013-12-01

STUDY ON TECHNOLOGY OF SLOPE/LANDSLIDE STABILITY ANALYSIS AND EARLY WARNING UNDER HEAVY RAINFALL

Urban and Rural Construction College, Sichuan Agricultural University, Dujiangyan 611830, Sichuan, China

摘要

摘要: 以四川汉源二蛮山滑坡为例，根据现场滑坡情况勘查及室内试验确定土体参数；选择内置VBA为开发工具，开发基于ArcGIS的边（滑）坡稳定性分析插件，并据此得出研究区域危险区划评价图。研究结果表明，特殊地形条件、震后地质构造、连续强降雨以及坡体非饱和渗流等，使孔隙水压力增加和土基质吸力迅速减少，导致坡体滑移面处土的抗剪强度降低而发生滑坡；基于ArcGIS软件得出研究区域危险区划评价图，与滑坡的实际情况具有较高吻合度。研究成果为深入分析强降雨对边（滑）坡影响及边（滑）坡预警提供了新的途径。
- 震后边坡 /
- 强降雨 /
- 滑坡 /
- 稳定性评价 /
- 滑坡预警
Abstract: Erman mountain landslide of Han Yuan County as the example, according to the exploration of landslide site conditions and indoor test of soil parameters; Choosing a built-in VBA for development tool to develop the side (slip) slope stability analysis plug-in based on ArcGIS, which makes the study regional risk zoning assessment diagram. Results show that the special topographical condition, geological structure after the earthquake, continuous heavy rains filled water load, slope unsaturated seepage flow, increasing the pore water pressure and rapidly reducing the soil matrix suction, leads to the shear strength decreased of the slope slip plane in the soil and finally landslides. Risk zoning evaluation chart of research area based on ArcGIS and the actual situation of slide have goodness of fit. Research result provides a new way for further analyzing the effect on side slope (slip) and warning under heavy rainfall condition.
- earthquake slope /
- rainfall /
- landslide /
- stability assessment /
- intuitive forecasting

HTML全文

图 1 不同含水率条件下τ_f-σ关系

Figure 1. Relationship between τ_f and σ different moisture content test

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图 2 含水率W对粘聚力c的影响

Figure 2. Moisture content on the influence of the friction Angle

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图 3 含水率W对摩擦角φ的影响

Figure 3. Effects of moisture content of cohesive force

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图 4 结构面

Figure 4. Structural plane

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图 5 VB开发界面

Figure 5. The development of interface

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图 6 操作主界面

Figure 6. Main Operating interface

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图 7 坡度单因子分析结果

Figure 7. Single factor analysis

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图 8 简单2因子（坡度+降雨量）耦合分析结果

Figure 8. Coupled superposition analysis

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图 9 安全系数随时间变化曲线

Figure 9. Safety coefficient changing with time curve

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图 10 危险性评价图

Figure 10. Picture of risk assessment

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图 11 实际滑坡前的滑坡体

Figure 11. Before the actual landslide

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图 12 实际滑坡过程图

Figure 12. Actual landslide process diagram

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表 1 岩层物理力学参数

Table 1. Physical and mechanical parameters of rocks

表 1 模块数据库连接端口说明

Table 1. Module database

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