川藏铁路帕隆藏布段干流纵剖面形态的工程地质涵义

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• 英文论文题名：The Geological Engineering Analysis of the Longitudinal Profile of the Palongzangbu River along the Sichuan-Tibet Railway
• 论文作者：冯涛 ; 任勇 ; 赵平 ; 巫锡勇
• 英文论文作者：Feng Tao ; Ren Yong ; Zhao Ping ; Wu Xiyong ; China Railway Eryuan Engineering Group Co.Ltd ; School of Geosciences and Environmental Engineering ; Southwest Jiaotong University
• 年：2016
• 作者机构：中铁二院工程集团有限责任公司;西南交通大学地球科学与环境工程学院;
• 论文关键词：帕隆藏布江 ; 河流纵剖面 ; 裂点 ; 构造 ; 气象水文 ; 阶地
• 英文论文关键词：the Palongzangbu River ; river longitudinal profile ; knick point ; meteorology and hydrology ; terrace ; geological engineering condition
• 会议召开时间：2016-10-14
• 会议录名称：“川藏铁路建设的挑战与对策”2016学术交流会论文集
• 语种：中文
• 分类号：U212.22
• 学会代码：ZGTD
• 会议名称：“川藏铁路建设的挑战与对策”2016学术交流会
• 会议地点：中国四川成都
• 主办单位：中国铁道学会、中国铁道学会工程分会、中国中铁股份有限公司、中铁二院工程集团有限责任公司
• 学会名称：中国铁道学会
• 页数：9
• 文件大小：1155k
• 原文格式：O
• 会议级别：全国

摘要

本文从帕隆藏布干流纵剖面坡降、裂点和凹度出发,结合流域构造、气象水文、地层岩性以及沿线阶地发育特征,对帕隆藏布干流进行分段,探讨其纵剖面形态的工程地质意义。研究认为:自上游然乌湖至下游通麦位置,帕隆藏布主河谷可分为三个部分:①上游然乌—宗坝段,气候相对干燥,河流纵剖面陡峭,不具备形成阶地的条件;②中游宗坝—古乡段,气候较湿润,河流纵剖面平缓,发育有多个工程性质良好的堆积体阶地;③下游古乡—通麦段,气候湿润,河流水量明显增大,下切剧烈,河流纵剖面坡降大,发育的少量基座阶地工程性质较好,但临近通麦,主河谷两侧谷坡物质移动强烈,塌方、泥石流等不良地质作用显著。
In this paper,the gradient,knick point and concavity of longitudinal profile was calculated and analyzed,and associating with the tectonics,meteorology,hydrology,lithology,and terrace distribution characteristic,the Palongzangbu River can be divided into 3 parts:①in the upstream section(Ranwu-Zongba),the climate is relatively dry and the gradient of the river longitudinal profile is steep,and no terrace was found in this part;②in the midstreem(Zongba-Guxiang),the climate is relatively humid and the gradient of the river is flatter,and several accumulation terraces have developed in this part with good engineering condition;③in the downstream(Guxiang-Tongmai),the climate is more humid,the water flow increases distinctly and the incision of the river is intense.The gradient of the river becomes steeper than the midstream,a few pedestal terraces have developed in this section,but a lot of landslides have developed in this section too near Tongmai.

引文

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