水文地质工程地质2012，Vol.39Issue(1)：102-106,5.
板桥学校液化带工程地质条件及液化土层特性
Characteristics of engineering geology and liquified soil layer of the Bianqiao School liquefaction zone
摘要
Abstract
Liquefaction is one of the most popular secondary geological disasters in an earthquake. Phenomenon of sand liquefaction was found in the Deyang area in the Wenchuan earthquake. The liquefaction-induced disaster investigation and geotechnical engineering drilling and tests were conducted for the Banqiao School liquefaction zone in order to understand the characteristics of engineering geology. The results indicate that (1) Characteristics of liquefaction-induced disaster was typical, including sand boiling, ground fissure and sidesway, foundation settlement. (2) Gravelly sand, which was divided into the Holocene sediment and the Pleistocene sediment, was the only cohesionless soil which had potential to liquefy in liquefaction size. (3 ) Real liquefaction soil is gravelly sand layer which is the unconsolidated Holocene sediment. Its graduation is poor. (4) The thicker non-liquefaction cover coat has filtering effect so that the small particles such as sand grains is easy to eject out of ground from fissures and, by comparison, the coarse particles such as gravel particles is difficult to spray.关键词
板桥学校液化带/砾石/颗粒大小分布/喷出物Key words
Banqiao School liquefaction zone/ gravelly sand/ gain size distribution/ ejecting matter分类
天文与地球科学引用本文复制引用
侯龙清,陈松,陈革,徐红梅,程丽红..板桥学校液化带工程地质条件及液化土层特性[J].水文地质工程地质,2012,39(1):102-106,5.基金项目
国家科技部国际科技合作项目(2009DFA71720) （2009DFA71720）
