降雨型花岗岩残积土滑坡碎屑流运动过程分析：以湖北黄梅县袁山村为例

朱颖; 甘建军; 鹿淇瑞; 邓怡武; 邓坤

doi:10.19509/j.cnki.dzkq.tb20240564

降雨型花岗岩残积土滑坡碎屑流运动过程分析：以湖北黄梅县袁山村为例

doi: 10.19509/j.cnki.dzkq.tb20240564

朱颖^1,,
甘建军^1, ,,
鹿淇瑞¹,
邓怡武¹,
邓坤²

1.
南昌工程学院鄱阳湖流域水工程安全与资源高效利用国家地方联合工程实验室，南昌 330099
2.
江西省水利科学院水资源与水生态环境研究所，南昌 330029

基金项目: 国家自然科学基金项目（42162025）；2021年度浙江省山体地质灾害防治协同创新中心开放基金项目（2PCMGH-2021-02）；江西省科技重点研发计划项目（20203BBGL73220）

详细信息

作者简介:
朱颖：E-mail：2023314001@nit.edu.cn

通讯作者:
E-mail：ganjianjun@nit.edu.cn

中图分类号: P642.22
计量
- 文章访问数: 75
- PDF下载量: 11
- 被引次数: 0
出版历程
- 收稿日期: 2024-09-29
- 录用日期: 2025-02-14
- 修回日期: 2024-12-01
- 网络出版日期: 2025-04-28

Analysis of rainfall induced-movement of landslide debris flows in granite residual soil: A case study of Yuanshan Village, Huangmei County, Hubei Province

ZHU Ying^1
,,
GAN Jianjun^{1
, ,},
LU Qirui¹,
DENG Yiwu¹,
DENG Kun²

1.
National and Local Joint Engineering Laboratory for Water Engineering Safety and Resource Efficient Utilization in Poyang Lake Basin, Nanchang Institute of Technology, Nanchang 330099, China
2.
Institute of Water Resources and Water Ecology and Environment, Jiangxi Academy of Water Conservancy, Nanchang 330029, China

More Information

Author Bio:
E-mail：2023314001@nit.edu.cn

Corresponding author: E-mail：ganjianjun@nit.edu.cn

摘要

摘要:
湖北黄梅县袁山村滑坡碎屑流是花岗岩残积土滑坡碎屑流，受地质条件影响，其运动过程较为复杂，突发性强。为研究中低山区花岗岩残积土滑坡碎屑流动力机制，分析降雨型花岗岩残积土滑坡碎屑流的运动过程，通过野外地质调查，利用无人机航拍（unmanned aerial vehicle，简称UAV）、遥感影像形成的数字地表模型（digital elevation model，简称DEM）、现场勘查及地质资料分析、数值模拟等方法对滑坡碎屑流进行运动过程分析。结果表明，滑坡碎屑流的运动过程中最大堆积厚度为6 m，在t=20 s时达到运动峰值17 m/s，而实际运动峰值应当更大，出现在滑源区开始失稳的阶段，整个运动过程分为3个阶段：0～30 s为滑坡碎屑流失稳启动阶段，在一级平台加速；30～70 s受地形影响，滑动体进行二次加速并发生部分偏转运动，冲毁袁山村的建筑物；70～130 s为减速堆积阶段，掩埋和堆积了建筑物。本研究可为类似滑坡碎屑流的防治提供参考。
- 降雨型滑坡碎屑流 /
- 花岗岩残积土 /
- 运动过程 /
- 数值模拟 /
- Massflow /
- 湖北黄梅
Abstract: Objective
The landslide in Yuanshan Village, Huangmei County, Hubei Province, represents a granite residual soil avalanche debris flow with complex and abrupt movement dynamics influenced by geological conditions. This study investigates the kinematic mechanisms of such landslide-debris flows in mid-low mountainous areas by analyzing the motion process of this specific event.
Methods
Through the field geological survey, the movement process of the landslide debris flow was analyzed based on UAV aerial photography, digital elevation model (DEM), on-site investigation, geological data analysis, and numerical simulations.
Results
The results show that the maximum accumulation thickness of the avalanche is 6 m during the movement process. The peak velocity reaches 17 m/s at t=10 s. The actual peak velocity should be larger and appears when the slip source area begins to be unstable. The whole movement process could be divided into three stages: during the first 30 s, the granite residual soil lost its stability, which resulted in the initiation and acceleration of the debris flow at the first-level platform; in 30-70 s, affected by the terrain, the debris flow was accelerated for the second time. A part of the debris flow changed its flow direction and destroyed the buildings in Yuanshan Village. From 70 s to 130 s, the debris flow decelerated and accumulated, during this stage the buildings were buried and accumulated by the debris flow.
Conclusion
This study can provide a reference for the prevention and control of similar disasters.
- rainfall induced-movement of landslide debris flow /
- granite residual soil remnant /
- process of movement /
- numerical simulation /
- Massflow /
- Huangmei County, Hubei Province

HTML全文

图 1 袁山村滑坡碎屑流区三维地形图(a)和平面示意图(b)

Figure 1. Three-dimensional topographic map (a) and plan (b) of the Yuanshan Village landslide debris flow area

下载: 全尺寸图片幻灯片

图 2 袁山村滑坡碎屑流变形分区

A. 滑源区；B. 冲击区；C. 加速区；D. 堆积区；Ⅰ. 上方不稳定区；Ⅱ-1. 右岸不稳定区；Ⅱ-2. 左岸不稳定区

Figure 2. Deformation zones of Yuanshan Village landslide debris flow

下载: 全尺寸图片幻灯片

图 3 袁山村滑坡碎屑流剖面图（Q₄^del. 滑坡堆积层；ηr₅³. 燕山晚期二长花岗岩；下同）

Figure 3. Profile of landslide debris flow in Yuanshan Village

下载: 全尺寸图片幻灯片

图 4 研究区滑坡的几个关键地形与微地貌

Figure 4. Several key terrains and micro landforms of landslide in the study area

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图 5 研究区滑坡过程的速度变化曲线

Figure 5. Velocity variation curve of landslide process of the study area

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图 6 袁山村滑坡碎屑流附近雨量站记录的日降雨量和月累计降雨量

Figure 6. Daily rainfall and monthly cumulative rainfall in the Yuanshan Village landslide debris flow

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图 7 袁山村滑坡碎屑流数值模拟模型

Figure 7. Numerical model of Yuanshan Village landslide debris flow

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图 8 袁山村滑坡碎屑流堆积物厚度随时间演化图

Figure 8. Thickness evolution of the flow deposits of Yuanshan Village landslide debris flow

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图 9 袁山村滑坡碎屑流运动速度随时间演化图

Figure 9. Evolution of runout velocity of Yuanshan Village landslide debris flow

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图 10 监测点布置图

Figure 10. Layout of monitoring points

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图 11 监测点处滑坡碎屑流体的运动速度变化情况

Figure 11. Velocity variations of the landslide debris flow at monitoring points

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表 1 袁山村滑坡碎屑流7个分区的主要参数

Table 1. Main parameters of the seven zones in Yuanshan Village landslide debris flow

分区	长度/m	宽度/m	深度/m	厚度/m	坡度/（°）	面积/m²	体积/m³
A(滑源区)	130	200～265	52～62	0～4.0	32～35	0.65×10⁴	2.4×10⁴
B(冲击区)	160	120～200	50～62	4～6.0	42	0.88×10⁴	4.4×10⁴
C(加速区)	80	85～200	50～93	1～5.0	35～45	0.89×10⁴	2.2×10⁴
D(堆积区)	238	65～85	93～168	1～6.0	2～3	1.80×10⁴	5.4×10⁴
Ⅰ(上方不稳定区)	265	120～220	55～185	0～3.0	33～42	3.50×10⁴	7.0×10⁴
Ⅱ-1(右岸不稳定区)	170	200～265	65～136	2～6.0	22～72	1.79×10⁴	5.4×10⁴
Ⅱ-2(左岸不稳定区)	163	115～200	20～136	1～8.0	5～40	1.82×10⁴	6.0×10⁴

下载: 导出CSV

表 2 研究区花岗岩残积土试样物理力学参数试验结果

Table 2. Experimental Results of Physical and Mechanical Parameters of Granite Residual Soil of the study area

试样序号	含水率/ %	湿密度/ %	液限/ %	塑限/ %	饱和度/ %	内黏聚力/kPa	内摩擦角/（°）
S1	34.2	1.96	33.5	20.8	93.4	13.6	14.5
S2	36.8	1.84	35.3	25.8	84.8	14.3	16.2
S3	34.2	1.87	34.8	21.5	70.8	17.8	24.3
S4	32.6	2.00	32.7	20.5	94.8	22.2	25.4
S5	35.3	1.92	29.3	19.8	91.4	23.5	17.3
S6	40.6	1.93	41.2	25.5	99.5	23.3	18.2

下载: 导出CSV

表 3 Voellmy模型选取参数

Table 3. Parameters of the Voellmy Model

平均密度/（kg·m⁻³）	摩擦系数	黏聚力/kPa	运行总时长/s
2000	0.43	15	130

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