Protection construction method of underground raw water pipeline

The invention relates to a protection construction method of an underground raw water pipeline, and belongs to technical field of underground engineering construction. According to the construction method, strengthening soil is formed around the raw water pipeline through a jet grouting pile, steel sheet piles are arranged on the two sides of the raw water pipeline to separate reinforcing soil from soil bodies on the outer sides of the steel sheet piles, a soil body at the side upper part of the raw water pipeline and a soil body on the raw water pipeline are excavated by sections, and a bottom plate is poured by blocks, so that the problems that the raw water pipeline floats due to discharge of the soil bodies, and the raw water pipeline bulges due to self weight of the surrounding soil bodies are effectively solved, and the deformation amount of the raw water pipeline is strictly controlled to be in the range of standard requirements. 本发明涉及种地下原水管道保护施工方法，属于地下工程施工技术领域。所述施工方法，通过旋喷桩在原水管道周围形成加固土，在原水管道两侧各设置排钢板桩将加