期刊论文

Deformation test of pre-disintegrating carbonaceous mudstone under loading and foundering condition

Zeng, L.

中文

中南大学学报(自然科学版)

1672-7207

2019

50

4

976-982

10.11817/j.issn.1672-7207.2019.04.027

51838001:国家自然科学基金 51878070:国家自然科学基金 51578079:国家自然科学基金 51678074:国家自然科学基金 17B013:湖南省教育厅优秀青年项目

本校为第一且通讯机构

为研究荷载与浸水条件下预崩解炭质泥岩变形特性,研发一套可综合考虑压实度、含水率、竖向荷载、浸水时间及循环次数等因素的湿化变形试验装置,并设计相应试验方案,开展荷载与浸水条件下预崩解炭质泥岩变形特性试验。研究结果表明:在加载初期和首次浸水时,预崩解炭质泥岩产生较大竖向变形,分别为压缩变形和湿化变形,湿化变形量比压缩变形量大 25.7%;各因素对预崩解炭质泥岩竖向变形影响的主次顺序(从主至次)依次为竖向荷载→循环次数→浸水时间→压实度→含水率,且竖向变形与荷载呈正相关关系,对试样进行浸水循环会大大增加湿化变形;得到预崩解炭质泥岩最大竖向变形与各因素的函数关系式,可为建...

To study the deformation characteristics of pre-disintegrating carbonaceous mudstone under loading and foundering condition, a new type of wetting deformation test device was developed. Considering the factors such as compactness, moisture content, vertical load, foundering time and cycle number synthetically, a series of deformation tests of pre-disintegrating carbon mudstone were carried out on the basis of orthogonal experiment. The results show that the pre-disintegrating carbon mudstone can produce a large vertical deformation at the time of initial adding water and loading, and they are ...