福清核电厂边坡工程高压旋喷与帷幕灌浆止水施工技术

Application of High Pressure Jet Grouting and Curtain Grouting Water Sealing in a Nuclear Power Project

摘要:

福清核电厂排水暗渠工程现场无大范围开挖条件，下卧土层中又含有块石和抛石，成桩困难，无法达到止水的目的，因此，探索应用了高压旋喷与帷幕灌浆止水工艺相结合，采用高压旋喷桩边坡支护，帷幕灌浆止水防渗。工程实践表明，这两种方法在施工速度、安全施工与文明施工以及经济效益方面取得了良好的效果，对于今后类似工程地质条件下的工程项目，具有一定的参考价值。

Abstract:

There were no large-scale excavation conditions for the drainage culvert project of Fuqing nuclear power plant and the soil layer contained rubble and riprap, it was difficult for pile-forming and water stopping could not be realized. The combination application of high pressure jet grouting and curtain grouting water sealing technologies were explored for slope support and water sealing. It is proved that by the engineering practice, good results are achieved in construction speed, safety construction, civilized construction and economic benefit with these two methods, which can be reference to the future projects with similar geotechnical conditions.