摘要
喀斯特地貌是具有溶蚀力的水对可溶性岩石(大多为石灰岩)进行溶蚀作用等所形成的地表和地下形态的总称,又称岩溶地貌。喀斯特地貌中隧道工程施工,常会遇到不同的溶洞,其中串珠状溶洞相对于其他形式的溶洞更加危险和复杂,尤其是同一里程断面内出现的环向连续溶洞。由于施工期间无法在短时间内探明围岩发育情况,现有溶洞极有可能出现二次发育,对工程产生较大的危害。通过对隧道断面不同部位的溶洞处理技术,阐明了如何安全可靠、科学可行、施工方便、经济合理、工期紧凑地解决串珠状溶洞施工,为今后类似的溶洞处理提供参考和借鉴。
Karst landform is a generic term for the surface and underground forms shaped by the dissolution of soluble rock( mostly limestone) by the water with corrosion force, also known as carbonate landform. Tunnel engineering construction in karst landform often encounter different caves, of which the beaded cave is relatively more dangerous and complex compared to other kinds, especially the continuous circumferential cave in the same mileage section. During the construction, due to the development of the surrounding rock, it cannot be verified in a short period of time, so the karst existing cave is likely to experience the second development, which will cause significant harm to the project. Based on the processing technology targeted to different parts of the karst tunnel section, we expounded how to solve the beaded cave construction in the way of safe and reliable, scientific and feasible, convenient construction, economical and reasonable, and tight schedule, as well as providing reference and suggestions for the treatment of similar karst caves.
出处
《中国港湾建设》
2017年第7期90-93,共4页
China Harbour Engineering
关键词
隧道
串珠状
连续
溶洞
tunnel
beads-like
continuous
cave
