冻–融及干–湿循环对泥质岩崩解特性影响的试验研究

梁 冰; 谭晓引; 姜利国; 焦波波

doi:10.11779/CJGE201604015

冻–融及干–湿循环对泥质岩崩解特性影响的试验研究 English Version

辽宁工程技术大学力学与工程学院,辽宁阜新123000

基金项目: 国家自然科学基金项目（51374124,51304113）

详细信息

作者简介:
梁冰(1962- ),女,教授,博士生导师,主要从事岩石力学和渗流力学等方面的教学和科研。E-mail: lbwqx@163.com。

中图分类号: TU458
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出版历程
- 修回日期: 2015-03-09
- 发布日期: 2016-04-24

Effects of freeze-thaw and drying-wetting cycles on slaking characteristics of mudstone

College of Mechanics and Engineering, Liaoning Technology University, Fuxin 123000, China

摘要

摘要: 为研究中国东北地区典型气候条件对泥质岩崩解特性的影响,以阜新海州露天矿泥质岩为研究对象,探讨了干-湿循环和冻-融循环作用对泥质岩崩解特性的影响。对不同试验条件下泥质岩浸泡液的pH值、TDS进行了测试; 分析了泥质岩的崩解比、空隙率和吸水率变化情况; 利用X射线衍射（XRD）、荧光光谱分析,测试岩样矿物化学成分。结果表明,相对于干-湿循环作用而言,冻-融循环作用会对泥质岩崩解性产生明显影响; 空隙率及吸水率均对泥质岩的崩解有重要作用; 冻-融循环对泥质岩可溶性盐类的溶解影响不大; 考虑冻-融循环对泥质岩崩解特性的影响对东北地区工程建设有重要意义。
- 环境工程学 /
- 泥质岩 /
- 崩解性 /
- 冻-融循环 /
- 干-湿循环 /
- 水-岩相互作用
Abstract: To study the influences of the specific climate in the northeast areas of China on the slaking characteristics of mudstone, the effects of freeze-thaw and drying-wetting cycles on the slaking characteristics of mudstone are analyzed based on a case study of Haizhou open pit mine in Fuxin, Liaoning. A series of experiments are carried out under the freeze-thaw and drying-wetting cycles, and the effects of the natural environmental factors on the change of the mudstone are discussed. The electrical conductivity and pH of the soak solution are recorded, and the changes of slaking ratio, porosity and water absorption rate of mudstone samples in slaking process are analyzed as well. Through analysis of the X-ray diffractometer (XRD) and fluorescence spectrum system, the mineral & chemical composition of mudstone is made clear. The test results show that, compared with the drying-wetting effects made in the natural condition, the freeze-thaw cycles can make noticeable effects on the mudstone which are mainly caused by the porosity and water absorption, rather than the dissolution of soluble salt. It is of great significance to take into account the effects of freeze-thaw cycles on the slaking characteristics of mudstone in the engineering construction in the northeast area of China .
- environmental engineering /
- mudstone /
- slaking characteristics /
- freeze-thaw cycle /
- drying-wetting cycle /
- water-rock interaction

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