工程地质学报2017，Vol.25Issue(2)：472-479,8.DOI:10.13544/j.cnki.jeg.2017.02.026
青海加吾矿区玛日当沟泥石流启动机理研究
STARTING MECHANISM OF DEBRIS FLOW AT MARIDANG GULLY IN JIAWU GOLD MINE IN QINGHAI-TIBETAN PLATEAU
摘要
Abstract
Jiawu gold mine is located in Qinghai Nanshan micro orogenic belt in the east margin of Qaidam Basin,Qinghai-Tibetan Plateau area.The objectives of this work is to ensure the progress of the mineral exploration and mining and to prevent the occurrence effectively of the sudden geological disaster,such as debris flow within the area.A full awareness of the background of the sudden debris flows is established by conducting a detailed investigation of the debris flow,especially the systematically investigation of the Maridang gully river basin,where is the key work area of the mining area.Based on this,we study the starting mechanism of Maridang gully debris flow systematically according to the research achievement of Fei et al.(2004).It was about the starting conditions of debris flow containing fine particles and the meteorological observation data in Tongde county,Qinghai province.The results show that the critical rainfall value of debris flow in Jiawu mining area,Maridang gully,has favorable conditions of the sudden debris flow.The conditions include terrain,source and water power.The debris flows in this area belong to the typical diluted debris flows,or water stone debris flows.They have the following characters:fluid velocity UW≥5.35n·s 1 and unit weight γc≤l.511t·m-3.关键词
加吾/青藏高原/泥石流灾害/玛日当沟/启动机理Key words
Jiawu/Tibetan plateau/Debris flow disaster/Maridang gully/Starting mechanism分类
天文与地球科学引用本文复制引用
洪磊,马润勇,章晓余..青海加吾矿区玛日当沟泥石流启动机理研究[J].工程地质学报,2017,25(2):472-479,8.基金项目
国家汶川地震灾后恢复重建项目(SCZC2009-517),青年科学基金项目(41002106)资助. （SCZC2009-517）
