干旱区生态环境知识资源中心(Arid): 新藏公路新疆段多年冻土特征及其灾害初探

Arid

	新藏公路新疆段多年冻土特征及其灾害初探
其他题名	Characteristics and Hazards of Permafrost along the Xinjiang-Tibetan Highway, Xinjiang
	马东涛 1; 张金山 1; 王蒙 2; 赵杰 2; 高巍 2
来源期刊	山地学报
ISSN	1008-2786
出版年	2004
卷号	22 期号:5 页码:554-561
中文摘要	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.
英文摘要	Permafrost is widespread developed on alpine mounds, central plateau valleys and lake basins along the Xinjiang-Tibetan Highway in Xinjiang due to high altitude, cold and arid climate and deeply loose Quaternary deposits. Permafrost distributes continuously between K306 + 000-K310 + 000 and K515 + 000-K705 + 000 with the length of 191. 6Km. Most of permafrost belongs to low ice content type with characteristics of weak frozen bulge and thawing settlement, only few segments belong to rich ice content type with characteristics of medium frozen bulge and thawing settlement. The roadbed and surface are threatened by permafrost such as sali-vary ices, thaw settlement, frost swelling, aqueous slurry, thaw slumping, gelifluction and desertification. With highway reconstruction and hazards mitigation, the water and heat balance of former permafrost will be destroyed by highway engineering activities, degradation and hazards of permafrost become worse in near fu-ture. The designing principle of permafrost protection is put forward based on characteristics of regional per-mafrost ,countermeasures such as avoiding permafrost, elevating roadbed height, paving thermal insulation pave-ment, improving drainage system, optimizing earth field and monitoring permafrost variation are put foreword to reduce destabilization and destruction by engineering works.
中文关键词	新藏公路 ; 多年冻土 ; 发育环境 ; 特征 ; 冻土灾害
英文关键词	Xinjiang-Tibetan Highway permafrost developing environment characteristics permafrost haz-ards
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:1654920
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205306
作者单位	1.中国科学院水利部成都山地灾害与环境研究所, 成都, 四川 610041, 中国; 2.中交第一公路勘察设计研究院, 西安, 陕西 710068, 中国
推荐引用方式 GB/T 7714	马东涛,张金山,王蒙,等. 新藏公路新疆段多年冻土特征及其灾害初探[J],2004,22(5):554-561.
APA	马东涛,张金山,王蒙,赵杰,&高巍.(2004).新藏公路新疆段多年冻土特征及其灾害初探.山地学报,22(5),554-561.
MLA	马东涛,et al."新藏公路新疆段多年冻土特征及其灾害初探".山地学报 22.5(2004):554-561.