Abstract: This paper mainly discusses the basic relationshipe between geological environments and waste-wa-tering of highway in Sichuan area. The results identify that:(1),the rock group composed of hard-soft mid-thick bedded limestone or dolomite with Sand-mudstone phyllite, and slate and the rock 8roupcomposed of hard-soft thin-mid-thick bedded sand-mudstone,limestone and mudstone are the groupes oc-curing wastes easily,whose potential precentage to trigger the waste is 63.6%,and(2),the sectionsto cause the waste always develop in the crossing sites of gecatructures or in the sites paralleling to thegeostructures,whose frequence for highway to occur waste-watering are 41.7%and 58.3%respec-tively.The results(v. S)will have important values in the protects and constructions of highway insichuan area.

Key words: waste-watering of highway, Geotectonics, engineering geological group, geostructure

摘要： 本文基于野外实地调查和室内土工、岩石试验，对四川境内公路水毁与地质环境的关系进行了探付。结果表明，软硬相间的中－厚层状灰岩、白云岩夹砂泥岩、千枚岩、板岩岩组及软硬相间的薄－中－厚层状砂泥岩及灰岩、泥岩互居岩组是境内公路水毁的易发岩组，占水毁事例的６３．６％；水毁沿断裂交叉地区及与断裂带平行地区发育的频率分别为４１．７％和５８．３％。这一结论对指导四川境内的公路建设是十分有益的。

关键词: 公路水毁, 大地构造, 工程地质岩组, 地质构造