北京丰富地下水地区深基坑支护和帷幕技术探讨

Discussion on the Technology of Deep pit Support and Heavy Curtain in the Area of Underground Water Richly in Beijing

以某基坑项目为例,探讨深基坑支护和止水帷幕工艺的新思路。本建筑群设3层地下室,基坑超深;基坑周边环境较为复杂,开挖支护难度大。结合工程地质条件及地下水情况,采用钻孔护坡桩、锚杆、止水帷幕等综合方式治理,通过分析监测成果进一步指导施工,做到了信息化施工。

based on the project of a pit to discuss the new idea of deep pit support and technique of water stop heavy curtain. The building has three floors of basement and very deep pit; the circumstance around the pit is complex, and difficult to dig and support. Consider the engineering geological and underground conditions, the synthesized treatment of boring fend pile, anchor rod and water stop curtain was used. Some sudden things of soft soil, underground water and the building hereabout settlement was deal with timely, many difficult was overcame, and some construction technique was used, the safety of the pit was guaranteed; the horizontal and vertical displacement of the pit support pile, the building surround and the force of the anchor rod was measured. The construction was guidance by analysis the result of the measurement, and realized the construction informationization.