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韩志刚

（ 云南云通监理咨询有限公司 ，云南 昆明 650000 )

摘   要 ：针对隧道突泥涌水危害大的问题 ，结合激发极化法 、地质雷达 、跨孔 CT 等方法 ，对九顶山隧道 ZK281+ 940 ~ ZK281+ 947 突泥涌水段进行探测 ，并根据探测结果分析出现突泥涌水的原因 。结果表明 ，通过地质雷达、跨孔 CT 、激发极化法，得出在 1 ~ 4 号钻孔中 11 ~ 22 m 处都存在破碎岩体，且富含水体；岩性分析发现突 泥涌水段围岩等级为 VI 级，多为易碎的全风化灰岩，稳定性差，易出现塌方；九顶山隧道突泥涌水段每隔约 12 h间歇性涌水；暴雨天气涌水量明显增加，且存在地表水补给的现象。造成隧道突泥涌水的成因 ，是隧道开 挖对岩土上方的全风化花岗岩结构产生破坏 ，造成使灰岩层中的裂隙水与花岗岩破坏结构连通 ，进而让花岗岩 岩体软化 ，最终使得初期支护失效，从而引发隧道塌方。针对以上成因，提出“ 探”、“截”、“泄”、“帷 ” 的处治措施 。通过工程实践表明，以上处治方案有效。

关键词 ：岩溶隧道 ；突泥涌水 ；灾变机理；处治技术

中图分类号 ：TU195           

文献标志码 ：A            

文章编号 ：1005- 8249  (2023)   04- 0031- 06

DOI : 10. 19860/j . cnki. issn1005- 8249. 2023 . 04. 005

HAN Zhigang

(  Yunnan  Yuntong Supervision Consulting Co. ，Ltd. ，Kunming 650000 ,   China  )

Abstract: in view of the great harm of mud and water inrush in the tunnel, the zk281+940 ～ zk281+947 mud and water inrush section of Jiudingshan tunnel is detected by using the methods of induced polarization, geological radar and cross hole CT, and the causes of mud and water inrush are analyzed according to the detection results. The results show that through geological radar, cross hole CT and induced polarization method, it is concluded that there are broken rock masses in 11~22m of No. 1~4 boreholes, and they are rich in water; The lithology analysis shows that the surrounding rock of the mud and water inrush section is grade VI, mostly fragile completely weathered limestone, with poor stability and prone to collapse; The mud inrush and water inrush section of Jiudingshan tunnel bursts water intermittently every about 12h; In rainstorm weather, the water inflow increases obviously, and there is a phenomenon of surface water recharge. The cause of mud and water inrush in the tunnel is that the tunnel excavation destroys the completely weathered granite structure above the rock and soil, connecting the fissure water in the limestone layer with the damaged structure of the granite, softening the granite rock mass, and finally invalidating the initial support, thus causing the tunnel collapse. In view of the above causes, the treatment measures of "exploration", "interception", "drainage" and "curtain" are put forward. The engineering practice shows that the above treatment scheme is effective.

Keywords: karst tunnel; mud and water inrush; catastrophe mechanism; treatment technology

作者简介 ：韩志刚  ( 1983—) ,   男，本科， 高级工程师，研 究方向 ：隧道突泥涌水预防与处治

收稿日期 ：2021- 08- 06