南宁地区红层泥岩膨胀性对工程的影响分析

ANALYSIS ON THE INFLUENCE OF SWELI.ING PROPERTY OF RED MUDSTONE ON ENGINEERING IN NANNING AREA

通过分析南宁地区红层泥岩在干湿交替环境下表现出的膨胀性,对比分析风化前后泥岩层膨胀性变化,依托南宁轨道交通工程,选取古近系、白垩系等不同时代的弱风化红层泥岩、风化层作为研究对象,对南宁地区红层泥岩及风化物膨胀性对基坑、边坡、道路工程的稳定性和安全性影响进行研究。

This paper analyzes the expansibility of red-layer mudstone in Nanning area under alternating dry and wet conditions,and compares and analyzes the expansibility changes of mudstone layer before and after weathering.Relying on Nanning rail transit project,weakly weathered red-layer mudstone and regolith in different ages such as Paleogene and Cretaceous are selected as research objects.This paper studies the influence of swelling property of red layer mudstone and weathering on the stability and safety of foundation pit,slope and road engineering in Nanning area.