广西红层分布及其泥岩工程特性分析

THE DISTRIBUTION OF RED BEDS AND ANALYSIS ON ENGINEERING CHARACTERISTICS OF MUDSTONE IN GUANGXI

随着我国西部大开发战略的实施,近年来广西红层地区工程建设逐渐增加,本文以红层岩组为基础,对广西地区红层分布进行分析,认为十万大山地区和桂东-桂东南区域分布较为密集。通过物理化学试验及力学试验对红层泥岩进行工程特性统计分析,得出上述区域泥岩膨胀性和崩解性特征,并通过击实特性、CBR承载比、软化系数等指标得知两区域泥岩填料级别主要为C3和C2,从而为相关红层区域工程建设提供一定的理论依据。

With the implementation of the strategy of developing the west of China, the construction in Guangxi red bed area has gradually increased in recent years. The paper holds that red bed is distributing centre in Shiwandashan area and southeast- ern Guangxi based on the analysis of red rock group. Through physical chemistry experiment and mechanical test of mudstone in that region , the expansibility and disintegration was obtained. And the filler grade is mainly C3 and C2, according to the heavy tamping property, CBR bearing ratio and softening coefficient. Then a certain theoretical basis for the engineering con- struction can be provided in relevant regional.