Peat soil stratum dumbbell-shaped cement soil curtain pile construction method

The invention relates to a peat soil stratum dumbbell-shaped cement soil curtain pile construction method, and belongs to the technical field of waterproof curtain pile construction. Dumbbell-shaped cement soil curtain piles are continuously engaged to form a continuous curtain, the dumbbell-shape enlarges the engaged overlapping area, after a long spiral drilling machine is used for drilling and pressing concrete at the engaged 'big end' part, a reinforcement cage is inserted to form a reinforced concrete slope protection pile, so that the concrete filling coefficient of the reinforced concrete slope protection pile can be controlled to be close to 1.0, the concrete is saved, and the pile forming quality is also ensured; and the two are engaged with each other to form a continuous waterproof curtain. The combined waterproof and support effect is achieved, the dumbbell-shaped cement soil curtain pile is formed in the peat soil stratum and does not depend on in-situ soil, the defect that cement and the peat so