Basement cavity column and dewatering well combined system and construction method thereof

The invention relates to a basement cavity column and dewatering well combined system, which relates to the field of basement construction structures, and comprises a dewatering well pipe, the dewatering well pipe is vertically arranged on the ground, a cavity column is arranged outside the dewatering well pipe, and the dewatering well pipe is vertically sleeved with the cavity column. The device has the effect of protecting the precipitation well casing. 本申请涉及一种地下室空腔柱与降水井相结合的系统，涉及地下室施工结构的领域，包括降水井管，降水井管竖直设置在地面上，降水井管外设置有空腔柱，空腔柱竖直套设在降水井管外。本申请具有保护降水井管的效果。