工程地质学报2012，Vol.20Issue(2)：266-275,10.
云南腾冲膨胀性硅藻土的发现及其工程地质意义
DISCOVERY OF SWELLING DIATOMITE AT TENGCHONG, YUNNAN PROVINCE AND ITS IMPLICATION IN ENGINEERING GEOLOGY
摘要
Abstract
This paper was based on the field investigation of the typical geological sections and multiple methods of laboratory tests on the samples from the slopes along the Baoshan-Tengchong highway and adjacent area in Yunnan Province. It discovered a swelling clayey diatomite in the Neogene lacustrine strata, named Mangbang formation, at Tengchong area Yunnan Province. The clayey diatomite is belonging to a type of both light and strong swelling rock, which has double physical-hydraulic properties of both typical diatomite and swelling clay rock. The former include high porosity, high water absorption capacity, and very strong structure, the later include high plasticity, outstanding swelling and disintegration properties, and the appearance of swelling property mainly connected with the contents of organic matter. The discovery of the swelling clayey diatomite in Mangbang Basin, as well as the researches on its engineering properties, is not only instructive for realization of the mechanism of related geo-hazardsalong the Baoshan-Tengchong high way, but also helpful to understanding the engineering properties of some lacustrine deposits and their easily causing geo-hazards in southwestern China.关键词
黏土质硅藻土/膨胀性/上新世/芒棒盆地/保山-腾冲高速公路Key words
Clayey diatomite/Swelling/Neogene/Mangbang Basin/Baoshan-Tengchong high way分类
天文与地球科学引用本文复制引用
张永双,郭长宝,曲永新,张明..云南腾冲膨胀性硅藻土的发现及其工程地质意义[J].工程地质学报,2012,20(2):266-275,10.基金项目
国家自然科学基金项目(41072269),科技基础性工作专项(2011FY110102)和铁道部科技开发计划项目(2008G027-B)资助. （41072269）
