降雨温湿环境下的岩石吸水特征试验研究

张芳; 刘文芳; 韩宗芳; 郑山霖; 王淑鹏; 林亚俊

降雨温湿环境下的岩石吸水特征试验研究

1.
深部岩土力学与地下工程国家重点实验室,北京100083;2.中国矿业大学(北京)力学与建筑工程学院,北京100083

基金项目: 高等学校博士学科点专项科研基金(2013102020016);国家自然科学基金(41172116,U1261212)

详细信息

作者简介:
张芳(1976—),女,辽宁大连人,副教授,博士,从事岩质文物遗址保护、隧道工程领域中水害的红外探测及防治研究.

中图分类号: TU443
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- 被引次数: 0
出版历程
- 收稿日期: 2016-05-19
- 刊出日期: 2016-12-28

The water absorption test of rock in the rainy and humid environment

1.
State Key Laboratory for Geomechanics and Deep Underground Engineering,Beijing 100083,China;2.School of Mechanics and Civil Engineering,China University of Mining and Technology,Beijing 100083,China

摘要

摘要: 岩石的吸水特征与其温湿环境密切相关,以岩石为主要材料的降雨型岩质边坡总是处于一定的温湿环境中.采用自主研发的软岩气态水吸附智能测试系统,通过模拟降雨温湿环境研究岩性、降雨延时、温度三个因素与岩石吸水特性之间的关系,得出了岩性组分不同的降雨型岩质边坡的水力响应特征.研究结果表明:降雨温湿环境(温度20℃、相对湿度100%)下的干燥砾岩吸水量最大,细砂岩和粗砂岩次之,绿帘角闪岩最小;砾岩具有较强的雨水下渗能力;细砂岩和粗砂岩在吸水量达到峰值后吸水曲线斜率出现负值,表明由“吸水”向“积水”转变;绿帘角闪岩很快出现“凝露”现象,下渗能力非常弱.该研究成果揭示了由砾岩为主要组分的岩质边坡具有较强的雨水下渗能力,强降雨时以渗流和地下径流作用为主,有必要考虑渗流和径流二者的耦合作用;由绿帘角闪岩为主要组分的岩质边坡,具有较强的排水能力,强降雨时以地表径流和地下径流作用为主,需重点考虑地下水渗透力作用.
- 降雨型滑坡 /
- 温湿环境 /
- 岩质边坡 /
- 吸水特征 /
- 降雨延时
Abstract: The water absorption characteristics of rocks are closely related to the temperature and humidity of environment.The rainfall type slopes with rock as the main material are always formed in a certain temperature and humidity environment.It is one-side to study the sliding disaster mechanism of rock water absorption solely.By using the intelligent testing system for vapor water absorption of soft rock and simulating rainfall temperature and humid environment to study the relationship between rock water absorption and three factors such as lithology,rain delay and temperature,it is concluded that the lithological composition is different and the hydraulic response characteristics of the rainfall type rock slope are also different.It indicates that in the rainfall＇s temperature and humidity(20℃,100%),dry conglomerate＇s water absorption is biggest,and sandstone is second while epidotic amphibolite is minimal.The conglomerate has strong rain infiltration capacity,and sandstone＇s curve slope is negative when the water absorption reaches peak.It shows that absorption rule changes from absorption to ponding.Epidotic amphibolite soon present “condensation” phenomenon,and its infiltration capacity is very weak.The research reveals that rock slope whose main component is conglomerate has strong ability of rain infiltration.During heavy rainfall,the effect of seepage and underground runoff is the main factor.It is necessary to consider the coupling effect of seepage and runoff.Rock slope whose main component is epidotic amphibolite has strong ability of drainage.During heavy rainfall,the effect of surface runoff and underground runoff is the main factor,so it is necessary to considers groundwater seepage force as the main factor.
- rainfall landslide /
- temperature and humidity environment /
- rock slope /
- water absorption /
- rain delay

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参考文献(36)

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降雨温湿环境下的岩石吸水特征试验研究

作者简介:
张芳(1976—),女,辽宁大连人,副教授,博士,从事岩质文物遗址保护、隧道工程领域中水害的红外探测及防治研究.

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The water absorption test of rock in the rainy and humid environment

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留言板

降雨温湿环境下的岩石吸水特征试验研究

作者简介: 张芳(1976—),女,辽宁大连人,副教授,博士,从事岩质文物遗址保护、隧道工程领域中水害的红外探测及防治研究.

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出版历程

The water absorption test of rock in the rainy and humid environment

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出版历程

目录

作者简介:
张芳(1976—),女,辽宁大连人,副教授,博士,从事岩质文物遗址保护、隧道工程领域中水害的红外探测及防治研究.