CAJ | 학술논문

研究目的：拟建高速公路汶川至川主寺段处于汶川“5．12”地震中心影响区，因其复杂的地形地貌、地层岩性及地质构造等影响，沿线沟槽及其两侧泥石流物源十分丰富，强降雨条件下易引发大量的泥石流等次生地质灾害。本文通过资料收集、遥感解译及现场地质勘测等工作和手段，查明沿线泥石流的分布规律及危害特征，进行高速公路工程地质选线。研究结论：（1）沿线泥石流数量多、危害面广，具有规模大小不一、危害程度差异性大及泥石流活动频繁、重复成灾的特性；（2）沿线泥石流对拟建高速公路段的危害方式主要体现为淤埋及冲毁危害，次为堵河阻水危害；（3）峡谷区河段选线应在查明泥石流活动痕迹的基础上判定泥石流规模后再确定线路的位置和高程，在处于形成期、发展期及淤积严重的泥石流沟处线路选线宜采用绕避原则，峡谷区线路选线严禁穿越泥石流堆积区，宜在泥石流沟通顺段落的流通区以高墩大跨设桥的形式通过；（4）本研究结论对汶川地区公路、铁路等工程地质选线具有指导意义。
연구목적：의건고속공로문천지천주사단처우문천“5．12”지진중심영향구，인기복잡적지형지모、지층암성급지질구조등영향，연선구조급기량측니석류물원십분봉부，강강우조건하역인발대량적니석류등차생지질재해。본문통과자료수집、요감해역급현장지질감측등공작화수단，사명연선니석류적분포규률급위해특정，진행고속공로공정지질선선。연구결론：（1）연선니석류수량다、위해면엄，구유규모대소불일、위해정도차이성대급니석류활동빈번、중복성재적특성；（2）연선니석류대의건고속공로단적위해방식주요체현위어매급충훼위해，차위도하조수위해；（3）협곡구하단선선응재사명니석류활동흔적적기출상판정니석류규모후재학정선로적위치화고정，재처우형성기、발전기급어적엄중적니석류구처선로선선의채용요피원칙，협곡구선로선선엄금천월니석류퇴적구，의재니석류구통순단락적류통구이고돈대과설교적형식통과；（4）본연구결론대문천지구공로、철로등공정지질선선구유지도의의。
Research purposes:The proposed Wenchuan -Chuanzhusi expressway,which is the part of proposed Wenchuan-Jiuzhaigou expressway,is located in the area of Wenchuan "5.12"earthquake affected.The groove and the two sides of proposed expressway have rich debris flow matters because of its complicated influence factor of topography,lithology and geological structure,which easily triggers debris flow disaster under the storm condition. Based on the measures of data collection,remote sensing interpretation and field geological surveys,this paper found out the distribution and damage characteristic of debris flow of the expressway area,and guided the engineering geological alignment of the expressway. Research conclusions:(1 )Within the area of expressway,the debris flow has the characteristics of breaking out with numbers,large area,high frequency and high truculency.(2)Debris flow distributed along the proposed expressway has the damage modes of buried hazards,destroyed hazards and blocking river hazards.(3 )In the area of valley,the engineering geological alignment of the proposed expressway should be done before ascertaining the traces of debris flow activity and its scale,and then determined the position and elevation of the expressway;The alignment of the proposed expressway should avoid the debris flow which is in the period of formation and development,or is afflicted by serious silting;In the valley area the alignment of the expressway should be prohibited passing through the position of debris flow deposit,but allowed to cross the flowing area of debris flow by the form of high -span bridge.(4 )The research conclusions can be widely applied in the geological alignment for expressway,railway engineering in Wenchuan area.