新藏公路新疆段多年冻土特征及其灾害初探   总被引：2，自引：1，他引：2  

马东涛  张金山  王蒙  赵杰  高巍 《山地学报》2004,22(5):554-561

新藏公路新疆段沿线海拔高，气候干冷，第四纪松散堆积层厚，在高山区和山原河谷盆地区发育了多年冻土。勘查研究表明：多年冻土分布于K306 000～K310 000和K515 000～K705 00间191．6km路段上，属高原片状连续多年冻土。沿线个别路段含冰量较高，为多冰-富冰冻土，中冻胀中融沉；绝大部分路段以少冰多年冻土为主，弱冻胀弱融沉。现有公路主要冻土灾害有涎流冰、路基融沉、路面翻浆、冻胀破坏、冻融滑塌和冻融泥流等。随着整治改建工程的实施，多年冻土原有的水热平衡的破坏，冻土灾害将趋于严重。根据沿线多年冻土的特征，提出施工和运营中应采取保护冻土的设计原则，通过改线避绕、抬高路基、提高路基强度及完善截排水系统等5条措施以减少公路工程对多年冻土的扰动和破坏。  相似文献   

新藏公路新疆段泥石流灾害初探   总被引：2，自引：3，他引：2  

马东涛  崔鹏  杨坤  王掌军 《干旱区地理》2003,26(4):349-354

新藏公路新疆段沿线共有泥石流灾害149处，直接危害线路53．05km。泥石流可分为暴雨型、冰雪融水型及雨水和冰雪融水混合型三个成因类型．其灾害集中分布于哈拉斯坦河、采拉克河、叶尔羌河及喀拉喀什河沿溪线路段。沿线泥石流具有松散堆积物丰富，水源不足，暴发频率低，规模火，受冰川和气候变化影响大等特点。在对泥石流成灾方式、活动现状和发展趋势分析研究的基础上．提出了灾害治理的基本原则和拟采取的主要工程措施及进一步工作的建议。  相似文献   

新藏公路(新疆境内)沿线道路病害   总被引：11，自引：2，他引：11  

杨坤  马东涛  崔鹏 《山地学报》2002,20(1):53-58

新藏公路（新疆境内）地处昆仑山中、西段，沿线道路病害类型多样，有泥石流、滑坡、水毁、崩塌、雪害、涎流冰、翻浆、冻土等，严重威胁和破坏交通。由于所处地域自然环境条件特殊，病害频频发生，随着全球气候变暖，冰川退缩，病害将愈演愈烈。本文在实地调查的基础上，分析了研究区病害发育现状、分布规律、成因以及发展趋势，提出了进一步工作的建议。  相似文献   

Analysis on spatial distribution and correlation of pavement distress along the Xinjiang-Tibet Highway北大核心CSCD     

柴明堂  马腾  李国玉  牛富俊  陈敦  杜青松  齐舜舜  周宇  曹亚鹏 《冰川冻土》2022,44(6):1681-1693

The Xinjiang-Tibet Highway（XTH）is a transportation corridor of manpower and supplies from inland regions to Tibet. The XTH has the highest altitude in China,which also has complex geological conditions and high distress ratio. The pavement distress was investigated completely to analyze the spatial distribution of pavement distress along the XTH and reveal the relationship among different types of distress. The distress ratio of 7 types of pavement distress was obtained and the relationship of pavement distress and ground surface temperature,altitude and vegetation cover was quantitatively fitted along the XTH. The result shows that,distress occurrence ratio of racking is has the largest percentage,which is the main reason to reduce the road condition. Pavement distress has a positive correlation and interaction with each other. One type of distress appears with the formation and development of other types of distress. The pavement cracking of the roadway with high altitude was obviously influenced by solar radiation and freeze-thaw cycle,which has a larger occurrence scale and development ratio than other regions. This paper reveals the relationship of each pavement distress and environmental factors,and provides a scientific basis and theoretical reference for the operation,maintenance and distress treatment of the XTH and planning Xingjiang-Tibet transportation corridor. © 2022 Science Press (China).  相似文献