通过分析某工程的周边环境及岩土工程水文地质条件，确定了粉喷桩结合内放坡技术的基坑支护方案，并对支护设计、地下水处理等措施进行了阐述，指出该方案加快了施工速度，节省了施工成本。%Through the analysis on the surrounding environment and geotechnical engineering hydrology geology conditions of a certain engineering, this paper determined the foundation pit support scheme combining with the powder spray pile and inner grading technology,and elaborated the sup-port design,ground water treatment and other measures,pointed out the solution speed up the construction speed,saved the construction cost.
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