Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction process for freezing holes
The invention belongs to the field of freezing method construction, and relates to a construction process for freezing holes. The construction process comprises the following steps that the position of each freezing hole is positioned, the holes are opened, and orifice sealing devices are installed; orifice pressing devices are mounted; the bottom parts of the holes are sealed; measuring is carried out; and a test for watering to add pressure is carried out. According to the construction process for the freezing holes, a secondary hole opening process and a pipe following method are adopted toinstall freezing pipes, and water leakage and sand flow during construction of the freezing holes are avoided; a switch of a valve is used for controlling slurry outlet amount, so that the ground safety is ensured, and settlement cannot occur; a pipe-following method drilling technology is adopted, the number of formation effluent is reduced, and ground settlement is controlled favorably; the freezing pipes are used as drilling rods, casing threads are adopted for connecting spaces between the freezing pipes, connection threads are fastened, and then manual arc welding is used for welding, the concentricity and the welding strength of the freezing pipes are ensured, and head parts are sealed after the freezing pipes reach the design depth.
本发明属于冻结法施工领域，涉及一种冻结孔施工工艺，包括以下步骤：定位开孔并安装孔口密封装置；安装孔口压紧装置；封闭孔底部；测量；打压试验。本发明采取二次开孔工艺和跟管法安装冻结管，杜绝冻结孔施工时漏水出砂；利用阀门的开关控制出浆量，保证地面安全，不出现沉降；采用跟管法钻进技术，既减少了地层流出物的数量，也有利于控制地面沉降；利用冻结管作钻杆，冻结管之间采用套管丝扣连接，接头螺纹紧固后再用手工电弧焊焊接，确保其同心度和焊接强度，冻结管到达设计深度后密封头部。
Construction process for freezing holes
The invention belongs to the field of freezing method construction, and relates to a construction process for freezing holes. The construction process comprises the following steps that the position of each freezing hole is positioned, the holes are opened, and orifice sealing devices are installed; orifice pressing devices are mounted; the bottom parts of the holes are sealed; measuring is carried out; and a test for watering to add pressure is carried out. According to the construction process for the freezing holes, a secondary hole opening process and a pipe following method are adopted toinstall freezing pipes, and water leakage and sand flow during construction of the freezing holes are avoided; a switch of a valve is used for controlling slurry outlet amount, so that the ground safety is ensured, and settlement cannot occur; a pipe-following method drilling technology is adopted, the number of formation effluent is reduced, and ground settlement is controlled favorably; the freezing pipes are used as drilling rods, casing threads are adopted for connecting spaces between the freezing pipes, connection threads are fastened, and then manual arc welding is used for welding, the concentricity and the welding strength of the freezing pipes are ensured, and head parts are sealed after the freezing pipes reach the design depth.
本发明属于冻结法施工领域，涉及一种冻结孔施工工艺，包括以下步骤：定位开孔并安装孔口密封装置；安装孔口压紧装置；封闭孔底部；测量；打压试验。本发明采取二次开孔工艺和跟管法安装冻结管，杜绝冻结孔施工时漏水出砂；利用阀门的开关控制出浆量，保证地面安全，不出现沉降；采用跟管法钻进技术，既减少了地层流出物的数量，也有利于控制地面沉降；利用冻结管作钻杆，冻结管之间采用套管丝扣连接，接头螺纹紧固后再用手工电弧焊焊接，确保其同心度和焊接强度，冻结管到达设计深度后密封头部。
Construction process for freezing holes
一种冻结孔施工工艺
LI LINGYU (Autor:in) / CHEN SONGZHOU (Autor:in) / ZHANG HUAWU (Autor:in)
17.04.2020
Patent
Elektronische Ressource
Chinesisch
FREEZING SYSTEM AND FREEZING STRUCTURE CONSTRUCTION METHOD
| Europäisches Patentamt | 2024
FREEZING SYSTEM AND FREEZING STRUCTURE CONSTRUCTION METHOD
| Europäisches Patentamt | 2024
GROUND FREEZING CONSTRUCTION METHOD AND GROUND FREEZING SYSTEM
| Europäisches Patentamt | 2021