四川省天全县地质灾害现状分析

英文篇名：Analysis of Geological Hazard Status Quo in Tianquan County, Sichuan Province
中文刊名：中国煤炭地质
英文刊名：Coal Geology of China
作者：杨庆一
英文作者：Yang Qingyi(Consultation Center ; Guizhou Bureau of Coal Geological Exploration ; Guiyang ; Guizhou 550006)
中文关键词：地质灾害 ; 发育现状 ; 分布规律 ; 影响因素 ; 天全县
英文关键词：geological hazard ; development status quo ; distribution pattern ; impact factor ; Tianquan County
出版日期：2009-05-25
机构：贵州省煤田地质局咨询中心;
年：2009
期：05
出版单位：中国煤炭地质

摘要

天全县处于巨型青藏滇缅印度尼西亚"歹"字型构造体系中部与龙门山北东向构造带结合部位,构造活动强烈。受5.12地震的影响,境内发生了大量的次生地质灾害。滑坡、不稳定斜坡、崩塌、泥石流是区内的主要地质灾害。分析认为:区内的地质灾害在时间上主要发生在2000年,而5.12地震以后更甚;在空间上主要分布在人口密集、人类工程活动强烈的东部地区及318公路一带;暴雨是诱发地质灾害的主要因素;地质灾害的分布受地层岩性、地貌类型、地质构造、植被分布、人类活动的综合影响。根据地质灾害的勘测结果,提出了避险搬迁、生态建设等综合防治建议。
The Tianquan County is situated at conjunctive site of the middle part of Qinghai-Tibet-Yunnan-Myanmar-Indonesia η-type structure and the Longmenshan NE tectonic belt,tectonic activities are strong.Because of impact from 5.12 Earthquake,abundant secondary geological hazards happened in the area,most of all are landslides,unstable slopes,collapses and mud-rock flows.Analyses reckoned: geological hazards are mainly happened since the year 2000 and what is more after the 5.12 Earthquake;spatially,mainly in thickly populated area and human engineering activities intense eastern region and No.318 national highway neighborhood;torrential rain is the critical factor to induce geological hazards;and distribution of such hazards is combining influenced by strata lithology,landform,geological structure,vegetation and human activities.As a consequence of geological hazard investigation,integrated controlling suggestions of risk-avoiding relocation,ecological construction etc.put forward.

引文

[1]成都兴蜀勘察基础工程公司.天全县“5.12”汶川地震地质灾害隐患点排查情况说明书[R].四川成都:成都兴蜀勘察基础工程公司.2008.