Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for closed dewatering by draining well in deep foundation pit construction
The invention discloses a construction method for closed dewatering by a draining well in deep foundation pit construction. The construction method comprises the following steps of (1) carrying out paying off and positioning on a well point; (2) forming a hole; (3) protecting the wall of the drilled hole; (4) cleaning the hole; (5) lowering a pipe; (6) carrying out gravel packing and water stopping; (7) washing the well; (8) trying to pump water. According to the construction method for closed dewatering by the draining well in deep foundation pit construction, an engineering project is constructed by adopting a layered dewatering and layered excavation method in combination with field actual conditions; from the perspective of the overall effect of the engineering project, the consolidation degree of a foundation pit soil body is good, and the out-pit observation water level is stable, so that good conditions are created for foundation pit earthwork excavation; according to the construction method for closed dewatering by the draining well in deep foundation pit construction, earthwork excavation, construction of two horizontal concrete supports and foundation slab cushion layer pouring are completed in a short time, so that the working efficiency is improved, and the exposure time of a dangerous source of a deep foundation pit is shortened on the whole; and water body pumpedby dewatering is centralizedly stored in a water storage pool and a fire pool on site, so that reuse during later main structure construction is facilitated, and the water resource utilization rate isincreased.
本发明公开了一种深基坑施工疏干井封闭降水的施工方法，包括如下步骤：(1)井点放线定位；(2)成孔；(3)钻孔护壁；(4)清孔；(5)下管；(6)填砾、止水；(7)洗井；(8)试抽水。本发明的工程项目结合现场实际情况，采用分层降水、分层开挖的方法施工。从其整体效果来看，基坑土体固结度良好，坑外观测水位稳定，为基坑土方开挖创造了良好条件。本发明在短时间内就完成了从土方开挖至两道水平混凝土支撑再至基础底板垫层的浇筑，不仅提高了工作效率，整体上还缩短了深基坑危险源暴露的时间。现场还将降水所抽水体集中存放于蓄水池和消防水池，方便后期主体结构施工时再利用，提高水资源利用率。
Construction method for closed dewatering by draining well in deep foundation pit construction
The invention discloses a construction method for closed dewatering by a draining well in deep foundation pit construction. The construction method comprises the following steps of (1) carrying out paying off and positioning on a well point; (2) forming a hole; (3) protecting the wall of the drilled hole; (4) cleaning the hole; (5) lowering a pipe; (6) carrying out gravel packing and water stopping; (7) washing the well; (8) trying to pump water. According to the construction method for closed dewatering by the draining well in deep foundation pit construction, an engineering project is constructed by adopting a layered dewatering and layered excavation method in combination with field actual conditions; from the perspective of the overall effect of the engineering project, the consolidation degree of a foundation pit soil body is good, and the out-pit observation water level is stable, so that good conditions are created for foundation pit earthwork excavation; according to the construction method for closed dewatering by the draining well in deep foundation pit construction, earthwork excavation, construction of two horizontal concrete supports and foundation slab cushion layer pouring are completed in a short time, so that the working efficiency is improved, and the exposure time of a dangerous source of a deep foundation pit is shortened on the whole; and water body pumpedby dewatering is centralizedly stored in a water storage pool and a fire pool on site, so that reuse during later main structure construction is facilitated, and the water resource utilization rate isincreased.
本发明公开了一种深基坑施工疏干井封闭降水的施工方法，包括如下步骤：(1)井点放线定位；(2)成孔；(3)钻孔护壁；(4)清孔；(5)下管；(6)填砾、止水；(7)洗井；(8)试抽水。本发明的工程项目结合现场实际情况，采用分层降水、分层开挖的方法施工。从其整体效果来看，基坑土体固结度良好，坑外观测水位稳定，为基坑土方开挖创造了良好条件。本发明在短时间内就完成了从土方开挖至两道水平混凝土支撑再至基础底板垫层的浇筑，不仅提高了工作效率，整体上还缩短了深基坑危险源暴露的时间。现场还将降水所抽水体集中存放于蓄水池和消防水池，方便后期主体结构施工时再利用，提高水资源利用率。
Construction method for closed dewatering by draining well in deep foundation pit construction
一种深基坑施工疏干井封闭降水的施工方法
CHENG JUN (Autor:in) / ZHANG FENG (Autor:in) / LI WEIJIE (Autor:in)
30.10.2020
Patent
Elektronische Ressource
Chinesisch
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