[1]同霄,彭建兵,朱兴华,等.天水市红花咀沟滑坡泥石流分析防治[J].水土保持研究,2016,23(03):343-347,353.
　TONG Xiao,PENG Jianbing,ZHU Xinghua,et al.Analysis and Prevention of Landslide Debris Flow in Honghuazui of Tianshui City[J].Research of Soil and Water Conservation,2016,23(03):343-347,353.
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天水市红花咀沟滑坡泥石流分析防治

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年03期 页码: 343-347,353 栏目: 出版日期: 2016-06-28
Title:
Analysis and Prevention of Landslide Debris Flow in Honghuazui of Tianshui City
作者:
同霄1, 彭建兵1,2, 朱兴华1, 马鹏辉1, 孟振江1
1. 长安大学 地质工程与测绘学院, 西安 710054;
2. 西部矿产资源与地质工程教育部重点实验室, 西安 710054
Author(s):
TONG Xiao1, PENG Jianbing1,2, ZHU Xinghua1, MA Penghui1, MENG Zhenjiang1
1. College of Geology Engineering and Geomatics, Chang’an University, Xi’an 710054, China;
2. Key Laboratory of Western Mineral Resources and Geological Engineering, Ministry of Education, Xi’an 710054, China
关键词:
滑坡; 泥石流; 数值计算; 拦挡坝; 预警预防
Keywords:
landslides; debris flow; numerical calculation; embankment; early warning
分类号:
P642.2
摘要:
红花咀沟上游和侧壁经过多次小规模滑移，堆积黄土疏松，随着夏秋集中降雨，滑坡体在失稳后会沿着红花咀沟顺流而下，携带沟内的大量黄土物源转变泥石流，估计潜在的泥石流物源有105m3。利用颗粒流数值分析以及Lorente模型、刘希林模型的对比，确定了滑坡泥石流的规模及危害范围。选取布设拦挡坝的防治措施，计算得到布置拦挡坝后，泥石流前缘距离缩短为1 531 m，堆积区宽度降低至552 m，在房屋公路农田中堆积区的宽度减小到174 m以及泥石流的峰值速度降低为10.1 m/s。提出拦挡坝评价指标P来衡量其防治效率，计算结果显示拦挡坝可以很大程度降低泥石流的危害程度。
Abstract:
The accumulation of loess is loose after many small slips of the upper and side walls in Honghuazui. With concentrated rainfall in the summer and fall, the instability landslide will move downstream along the gully and will carry a large number of loess sources and transform into debris flow, it will be estimated that there is 105m3 of the potential debris flow source. Using the quantitative formula and particle flow numerical calculation analysis of Honghuazui, we determined the size and scope of landslide debris flow. The control method of setting up the embankment was selected, and the debris flow front distance reduced to 1 531 m, the accumulation zone width reduced to 552 m, the accumulation zone width in building, highway and farmland reduced to 174 m and the debris flow peak velocity decreased to 10.1 m/s. The embankment evaluation index P to measure the efficiency of control was put forward. The calculation results show that the embankment can greatly reduce the harmful level of debris flow.

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备注/Memo

收稿日期:2015-06-02;改回日期:2015-06-15。
基金项目:国家重点基础研究发展计划（2014cb744702）；中央高校基本科研业务费资助项目（自然科学类基础研究项目）（310826151046）
作者简介:同霄(1987-),男,陕西三原人,博士研究生,研究方向为地质灾害。E-mail:tong@chd.edu.cn
通讯作者:彭建兵(1953-),男,湖北麻城人,博士,教授,主要从事工程地质与地质灾害研究。E-mail:dicexy_1@chd.edu.cn

更新日期/Last Update: 1900-01-01