岩溶地质深基坑涌水封堵技术研究

Study on Water Plugging Technology of Deep Foundation Excavation in Karst Geology

溶洞水常与裂隙水等地下水存在连通性,是地下水的枢纽。对广州某岩溶地质深基坑开挖过程中涌水封堵技术进行研究,提出钻孔、注浆、监测要求。通过对涌水点周边的溶洞进行注浆封堵,从源头上解决涌水问题,快速高效化解突发涌水险情,未对基坑及周边环境造成影响,确保基坑后续开挖施工安全进行。

Karst cave water is often connected with groundwater such as fissure water and is the hub of groundwater. This paper studies the plugging technology of sudden water gushing during the excavation of a deep foundation excavation in karst geology in Guangzhou, and puts forward the requirements of drilling, grouting and monitoring. By grouting and plugging the karst caves around the water gushing point, the problem of water gushing is solved from the source, and the sudden water gushing danger is quickly and efficiently solved. It has no impact on the foundation excavation and the surrounding environment, and ensures the safety of the subsequent excavation construction of the foundation excavation.