摘要
荷叶塘高架桥位于二连浩特至广州国家高速公路湖南省永州至蓝山(湘粤界)高速公路第2合同段,属大跨径、高墩特大型桥梁。该桥两侧墩台位于地势陡峭的山坡上,中间桥墩位于地势较为平坦的谷地中。桥位区发育的不良地质包括岩溶、崩塌及危岩体、潜在不稳定边坡等三种类型。针对桥位区存在的不良地质,采用了综合勘察的手段,为查明桥位区岩溶的发育规律,引入了跨孔电磁波透视法等先进的勘察技术,取得了良好的效果。对桥位区发育的不良地质的分布及危害性进行了分析、评价,并提出了相应的处置方案。
The Heyetang viaduct is one part of second contract section in Yongzhou-Lanshan highway of Erlianhaote-Guangzhou national freeway in Hunan province. The bridge is one long span,high pier bridge. The abuntments and some of piers are on the hill. Other piers are on the smooth terrain in deep valley. The had geological appearance embraces karst,collapse and dangerous rocks,landslide and so on. Comprehensive prospecting means have been used to find out bad geological appearance. The cross-hole electromagnetic wave-penetrating method has been used to detect karst in Heyetang viaduct. Distribution and harmfulness have been discussed and evaluated. Meanwhile, the disposing means have been put forward.
出处
《公路工程》
2010年第3期41-45,共5页
Highway Engineering
关键词
不良地质
分布
危害
处置
bad geological appearance
distribution
harmfulness
disposing means
