【作者】 邓林； 邓荣贵； 吕燕； 顾慧；

【Author】 DENG Lin DENG Rong-gui GU Hui Civil Engineering College,Southwest Jiaotong Univ,Chengdu,Sichuan 610031 China; LU yan Environment Engineering College,Southwest Jiaotong Univ,Chengdu,Sichuan 610031,China

【机构】 西南交通大学土木工程学院岩土工程系； 西南交通大学环境工程学院；

【摘要】 在地质调查的基础上对水大沟某电站泥石流的发育特征和运动特征进行了分析,根据现场钻孔探明的地质情况,利用绘图建立起河道内固体物质堆积体顶面面积和固体物质堆积的最大高度的关系.由此得出:发生200～500年一遇泥石流为大规模的粘性泥石流;泥石流撞击力较大,堆积高程超过防洪高程,同时将进入河床坝前位;对初拟大坝、相关枢纽建筑物及发电设备会产生严重影响;泥石流治理工程量较大,可靠性较差,经治理后仍可能对初拟坝址相关枢纽建筑物进口构成较大的安全隐患,不宜选用该坝址.更多还原

【Abstract】 On basis of detailed geological research,this essay particularly analyzes the development charac- teristics and movement characteristics of debris flow in Shuida Channel.According to geological condition proved by site boring,this essay also establishes the relationship between solid matter accumulation surface area and maximum height of solid matter accumulated through drawing.It is concluded:the debris flow happened once 200～500 years is of viscous debris flow.This type of debris flow is with stronger impacting force;and its accu- mulation elevation is taller than that of flood-control;it also enters into the front of the river bed,which will se- riously influence the pre-draft high dam,related conservancy buildings and electrical generators.With heavier controlling engineering,lower reliability,and bigger risk to related conservancy building-entrance in the pre- draft lower-dam after controlling,this dam place is not available.更多还原