地质构造在虎跳峡金沙江大桥桥址比选中的作用

›› 2017, Vol. 31 ›› Issue (3): 313-316.

地质构造在虎跳峡金沙江大桥桥址比选中的作用

文海1，锁沛斯1，秦雨樵2

(1.云南省交通规划设计研究院，昆明 650041；2.中国科学院武汉岩土力学研究所岩土力学与工程国家重点试验室，武汉 430071)

收稿日期:2016-07-25 修回日期:2016-08-09 出版日期:2017-06-25 发布日期:2017-06-26
作者简介:文海（1978-），男，高级工程师，研究方向为岩土工程、地质灾害防治及工程地质勘察等。
基金资助:
云南省交通运输厅科技项目（云交科2014（A）01）资助

Role of Tectonic Structure in Bridge Sites Screening for the Jinsha River Crossing at Tiger Leap Gorge

WEN Hai1, SUO Peisi1, QIN Yuqiao2

(1.Yunan Transportation Planning Design and Research Institute Co., Ltd., Kunming 650041;2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071)

Received:2016-07-25 Revised:2016-08-09 Online:2017-06-25 Published:2017-06-26

摘要/Abstract

摘要： 香丽高速公路金沙江大桥跨越虎跳峡深切峡谷，地形地貌、地质构造、地层岩性复杂，两岸地形、风化带、卸荷带不对称发育，不良地质很发育；复杂地质条件给地质比选带来了很大困难，如何从复杂地质环境中寻找出关键地质因素，就成为了桥址地质比选成功与否的关键；经过勘察综合分析后发现，区内地质构造对地形地貌、地层岩性、不良地质、岸坡结构及风化带、卸荷带等地质条件均有着密切关联，在地质比选中起到提纲挈领性的关键作用。
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关键词: 地质构造, 虎跳峡, 金沙江大桥, 桥址比选, 地质比选

Abstract: Jinsha River Bridge located at the XiangLi highway is across the Tiger Leap Gorge deep canyons. The topography condition and geologic structure as well as the formation lithology are very complicated. In addition, the topography and weathering zone as well as the unloading belts on both sides of the bridge site are unsymmetrically developed with unfavorable geological conditions. The complicated geological conditions result in the extreme difficulties for the bridge site selections. Filtering the key geological factors from various potential affecting factors is critical to the bridge site screening. Results from the comprehensive exploration program indicate that the key factor is the tectonic structure. It is related to the topography, stratigraphy and lithology, adverse geological conditions, geological structures at both banks, weathering zones and unloading belt.

Key words: Tectonic Structures, Tiger Leap Gorge, Jinsha River Bridge, Bridge Location Selections, Geologic Conditions Comparison

文海1，锁沛斯1，秦雨樵2. 地质构造在虎跳峡金沙江大桥桥址比选中的作用[J]. , 2017, 31(3): 313-316.

WEN Hai1, SUO Peisi1, QIN Yuqiao2. Role of Tectonic Structure in Bridge Sites Screening for the Jinsha River Crossing at Tiger Leap Gorge[J]. , 2017, 31(3): 313-316.