[1]乔国文,王运生,杨新龙.高寒山区岩体冻胀冰劈破坏试验[J].山地学报,2014,(05):579.
　QIAO Guowen,WANG Yunsheng,YANG Xinlong.Experiment on Rock Frost Heaving Damage of Ice Splitting in Alpine Mountain Regions[J].Mountain Research,2014,(05):579.
点击复制

高寒山区岩体冻胀冰劈破坏试验()

分享到：

《山地学报》[ISSN:1008-2186/CN:51-1516]

Title:: Experiment on Rock Frost Heaving Damage of Ice Splitting in Alpine Mountain Regions

作者:: 乔国文; 王运生; 杨新龙; 1.成都理工大学地质灾害防治与地质环境保护国家重点实验室，四川成都 610059；　
2.新疆维吾尔自治区交通规划勘察设计研究院，新疆乌鲁木齐 830006

Author(s):: QIAO Guowen; WANG Yunsheng; YANG Xinlong; 1.State Key Laboratory of Geohazards prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059,China;
2.XinjiangTransportation Planning Serveying and Design Institute, Urumqi 830006,China

摘要:: 高寒、高海拔地区岩体物理风化导致的不良地质对工程建设影响明显。为了揭示高寒山区岩体在冻融条件下破坏的机理，使岩体冻融破坏防治更有针对性及有效，依托乌鲁木齐-尉犁高速公路建设项目，通过试验手段，探讨了冻胀条件下岩体破坏的原因。冰劈试验揭示了自由水变成冰过程中膨胀力的变化情况及特性，试验显示在围护环境不变的情况下冻胀力或冰劈力可以达33 MPa以上，远大于岩石抗拉强度及裂隙胶结强度，且温度越低，冻胀启动越快，速率越大，冰劈越明显。通过岩体冻胀应变试验揭示了岩体裂隙中自由水膨胀变形性质。岩体冻胀应变主要由裂隙变化引起，裂隙性质不同，冻胀应变特征不同，冻胀应变的趋势及大小受控于裂隙的贯通性、含水情况及胶结强度。由此，总结了岩体在冻胀条件下的破坏机理。该成果对高寒山区岩体的破坏机理的认识具有重要的理论和现实意义

Abstract:: In the cold and high altitude regions, freezethaw damage start from the rock fractures. Relying on the Urumqi-Yuli higyway of China construction feasibility study and research projects, through the experimental study, this paper discusses the reason of fracture failure of freezing and thawing conditions. About the factors of stess, We through the ice split test revealed the process of expansion stress caused by the change of water into ice, Results show that the ice split force which can reach 33 MPa or more is much larger than the bond strength of rock fracture. About the factors of strain, We through the rock frost heaving strain tests reveal the fracture rock mass properties of frost heave, results show that rock mass strain is mainly caused by the change of the frost rock fracture. Thus, we summarize the failure mechanism of rock under frost conditions. The results have important theoretical and practical significance for understanding the failure mechanism of rock mass under freezing and thawing.

[1]铁永波,Ireneusz Malik,Piotr Owczarek,等.树木年代学在高寒山区泥石流历史事件重建中的应用——以磨西河流域倒灶沟为例[J].山地学报,2014,(02):226.
　TIE Yongbo,Ireneusz Malik,Piotr Owczarek.Dendrochronological Dating of Debris Flow Historical Events in High Mountain Area——Take Daozao Debris Flow as an Example[J].Mountain Research,2014,(05):226.
[2]程尊兰,朱平一,宫怡文.典型冰湖溃决型泥石流形成机制分析[J].山地学报,2003,(06):716.

备注/Memo:: 收稿日期(Received date)：2013-12-01；改回日期(Accepted): 2014-04-11。
基金项目（Foundation item）：交通运输建设科技项目（201231836520）。\[This research is supported by the Ministry of Communications(201231836520).\]
作者简介（Biography）：乔国文(1979–)，男，博士研究生，高级工程师，主要从事公路工程地质勘察研究工作。\[Qiao Guowen(1979－),male,doctor, Senior Engineer, major in Rock&Soil engineering study in highway.\]

更新日期/Last Update: 1900-01-01