浅埋隧道穿越岩溶断裂带处治技术研究

Study on Treatment Technology of Shallow-buried Tunnel Through Karst Fault Zone

浅埋隧道穿越断裂破碎带及岩溶等不良地质时,采用竖向地表注浆封堵和管棚注浆加固处治方案,结合超前导管预注浆等综合治理方案,封堵地表水体、岩溶通道及断裂带,增强了围岩自承能力,保证了施工安全。

When shallow -buried tunnel passing through unfavorable geology like fracture zone and karst, treatment schemes like vertical grouting and plugging for shallow ground and pipe roof grouting reinforcement are adopted. In combination with advanced pipe pre -grouting and other comprehensive treatment schemes, surface water, karst channels and fracture zone are blocked, thus enhancing the self- acceptance capacity of surrounding rock and guaranteeing the construction safety.