四川布拖县扎台沟泥石流微地貌及成灾特性

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	四川布拖县扎台沟泥石流微地貌及成灾特性
	苏鹏程; 王全才; 何思明
刊名	中国地质灾害与防治学报
	2006
卷号	17 期号:2 页码:1-5
关键词	泥石流微地貌堵塞系数扎台沟四川省布拖县
其他题名	Micro_geomorphology and characteristic of Zhatai Gully debris flow hazard, Butuo County, Sichuan Province
通讯作者	刘希林
合作状况	其它
中文摘要	扎台沟为一老泥石流沟,历史上曾多次发生过泥石流.通过野外考察、实验分析和理论计算,扎台沟流域面积4.86km^2,主沟长4.53km,主沟平均纵比降420‰.共发育5条主要支沟,流域切割密度2.19km/km^2,源头海拔3100m,沟口海拔1197m,主沟相对高差1903m,与西溪河以62°交角汇入.扎台沟为中高频率-中大规模粘性泥石流沟,目前已辩明,近1000a内至少发生过3次大规模泥石流,泥石流重度2.0t/m^3,沟道堵塞系数1.5.扎台沟50a一遇和100a一遇泥石流流量分别为155.77m^3/s和178.19m^3/s;50a一遇和100a一遇泥石流固体物质冲出量分别为16.39×104m^3及18.14×104m^3,是一条中度危险的泥石流沟,对下游水电站其中一处拟选坝址有一定影响.如无法避开扎台沟泥石流对拟选坝址的影响,可考虑对该泥石流沟采取选择性整治工程措施.
英文摘要	Zhatai gully is located in Butuo County of Sichuan Province, and on the right bank of Xixi River, one of the tributaries of Jinsha River. Zhatai gully is an old debris flow gully, where several debris flowevents occurred in history. Based on field investigation, laboratory test and photograph measurement, it is found that Zhatai gully has f ive sub-gullies with a drainage area of 4186km2 , where the main channel length is 4153km and the mean gradient is 42%. The drainage density in the area is 2119kmPkm21 The head of the gully is 3100 m above sea level, and the toe of the gully is 1197 m above sea level, so the drainage relief is 1903 m. Zhatai gully enters Xixi River with an angle of 62b. Zhatai gully may generate middlePhigh frequency_moderatePlarge magnitude debris flows. Field survey demonstrates that the gully occurred at least three times debris flow during the last 1000 years. The densities of the debris flows were about 210 tPm3 , and the blocking coeff icient of the gully bed is 1151 Based on hydrologic calculation, the debris flows discharge every 50_year and 100_year 155177m3Ps and 178119m3Ps respect ively and the debris flow deposits is 16139 @ 104m3 and 18114 @ 104m3 respectively. The gully is a moderate hazardous debris flow gully, and has some threat to the planned dam of a hydroelectric station the lower reach. If it is difficult to avoid the negative influence on the dam construction, countermeasures against the debris flow are necessary.
分类号	P642.23
资助信息	四川省重点科技资助项目(01SG049-02)
语种	中文
公开日期	2010-08-27
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/1681]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
推荐引用方式 GB/T 7714	苏鹏程,王全才,何思明. 四川布拖县扎台沟泥石流微地貌及成灾特性[J]. 中国地质灾害与防治学报,2006,17(2):1-5.
APA	苏鹏程,王全才,&何思明.(2006).四川布拖县扎台沟泥石流微地貌及成灾特性.中国地质灾害与防治学报,17(2),1-5.
MLA	苏鹏程,et al."四川布拖县扎台沟泥石流微地貌及成灾特性".中国地质灾害与防治学报 17.2(2006):1-5.