The text show the method to transact soft base under subgrade by mudjack, plane furnish, hole site, confirm pressure, deep of bore and technics flow of mudjack.
简要说明压浆法处治路基下软弱地基的方法，平面布置、孔径，确定压力、钻孔深度，以及压浆工艺流程。
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Combining with the engineering example of base pile construction of high building in Daoli district of Harbin city, this paper states the construction control outline of bored mudjack pile.