贵州凯里环城高速新街隧道岩溶调查及应对措施
摘要:岩溶地区隧道围岩发生突水风险较大,为了避免岩溶隧道围岩突水事故的发生,采用现场地质调查的方法对贵州凯里环城高速新街隧道场地进行岩溶地质调查。结果表明:新街隧道场地岩溶极其发育,岩溶发育形态主要包括岩溶洼地、落水洞和溶洞三类,其中隧道洞身穿越区域可能存在大型溶洞,发生岩溶突水概率高。为了防止岩溶突水事故的发生,在新街隧道建设施工过程中采用地质雷达超前地质预报方法对隧道掘进掌子面前方地质情况进行探测。通过对两处典型掌子面地质超前预报结果进行分析,并结合开挖揭露地质情况,表明采用地质雷达超前地质预报方法可以有效探测掌子面前方岩溶和围岩地质情况,为隧道安全掘进提供技术支撑,研究结果可为类似工程提供借鉴。
Abstract:It is prone to encountering water inflow in karst tunnels. To avoid water inflow incidents in the construction of karst tunnel, field geological investigation was adopted to investigate the karst geology conditions in Xinjie tunnel of Kaili ring highway in Guizhou Province. It indicated that karst was extremely developed on the site of Xinjie tunnel, including karst depressions, skinholes and karst caves. Furthermore, there might be a large karst cave in the area where the tunnel passed through, and the probability of karst water inrush was high. In order to prevent karst water inrush incident, geological prediction by ground penetrating radar was applied to detect the geology conditions in front of the tunnel face. The results of geological prediction at two typical tunnel faces were analyzed and compared with the geological conditions exposed by subsequent excavation, which show that the geological prediction by ground penetrating radar had detected the geological conditions in front of tunnel face efficiently and could provide supports for safe excavations.
中文标题：
贵州凯里环城高速新街隧道岩溶调查及应对措施
Karst Investigation and the Countermeasures in Xinjie Tunnel of the Kaili Ring Highway, Guizhou Province
作者：
王建,王丽君,马建新,何鑫
Wang Jian,Wang Lijun,Ma Jianxin,He Xin
作者简介:王建,男,1985年生,桥梁与隧道工程硕士,高级工程师,从事公路工程设计研究工作。E-mail:23190651@qq.com
通讯地址：
中国电建集团成都勘测设计研究院有限公司, 四川成都 610072
PowerchinaChengduEngineeringCorporationLimited,Chengdu610072,Sichuan,China
中图分类号:P642.25
doi:10.3969/j.issn.1007-2993.2020.05.007
出版物：岩土工程技术
收稿日期:2019-12-25
网络出版日期:2021-07-06
关键词:公路隧道,岩溶,现场调查,新街隧道
Key words:highway tunnel,karst,field investigation,Xinjie tunnel
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