Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wall protection construction method for rotary excavating pile
The invention relates to a wall protection construction method for a rotary excavating pile, and belongs to the technical field of rotary excavating pile construction. The wall protection constructionmethod comprises the following steps that a slurry pool is constructed, and the slurry pool is filled with wall protection slurry; a rotary drilling machine is used for drilling, in the drilling process, the wall protection slurry in the slurry pool is guided into a pile hole, and the balance of the drilling liquid level is kept; after drilling is completed, sediment is removed, and the wall protection slurry is recycled; and the wall protection slurry filled in the slurry pool is a polyacrylamide aqueous solution, and the concentration of the polyacrylamide aqueous solution meets the following requirements that in the drilling process, the viscosity of the wall protection slurry in the pile hole is controlled to be 28 Pa.s to 35 Pa.s. According to the wall protection construction method,the polyacrylamide aqueous solution is adopted to replace a traditional mud protection wall, polyacrylamide has flocculability, thixotropy, resistance reduction and thickening property, and has goodcollapse prevention, seepage prevention and leakage stoppage effects so that rotary drilling construction can be completed with high quality, quickness and low cost.
本发明涉及一种用于旋挖桩的护壁施工方法，属于旋挖桩施工技术领域。本发明包括如下步骤：施工浆液池，浆液池内装入护壁浆液；利用旋挖机钻孔，在钻进过程中，将浆液池内的护壁浆液导入桩孔内，保持钻进液面平衡；钻孔完成后，清理沉渣，回收护壁浆液；其中，浆液池内装入的护壁浆液为聚丙烯酰胺水溶液，聚丙烯酰胺水溶液的浓度满足如下要求：在钻进过程中，桩孔内的护壁浆液粘度控制为28Pa·s至35Pa·s。本发明采用聚丙烯酰胺水溶液代替传统的泥浆护壁，聚丙烯酰胺具有絮凝性、触变性、降阻性、增稠性，具有良好的防坍塌和防渗堵漏作用，确保旋挖钻孔施工能够高质量地、快捷地、低成本地完成。
Wall protection construction method for rotary excavating pile
The invention relates to a wall protection construction method for a rotary excavating pile, and belongs to the technical field of rotary excavating pile construction. The wall protection constructionmethod comprises the following steps that a slurry pool is constructed, and the slurry pool is filled with wall protection slurry; a rotary drilling machine is used for drilling, in the drilling process, the wall protection slurry in the slurry pool is guided into a pile hole, and the balance of the drilling liquid level is kept; after drilling is completed, sediment is removed, and the wall protection slurry is recycled; and the wall protection slurry filled in the slurry pool is a polyacrylamide aqueous solution, and the concentration of the polyacrylamide aqueous solution meets the following requirements that in the drilling process, the viscosity of the wall protection slurry in the pile hole is controlled to be 28 Pa.s to 35 Pa.s. According to the wall protection construction method,the polyacrylamide aqueous solution is adopted to replace a traditional mud protection wall, polyacrylamide has flocculability, thixotropy, resistance reduction and thickening property, and has goodcollapse prevention, seepage prevention and leakage stoppage effects so that rotary drilling construction can be completed with high quality, quickness and low cost.
本发明涉及一种用于旋挖桩的护壁施工方法，属于旋挖桩施工技术领域。本发明包括如下步骤：施工浆液池，浆液池内装入护壁浆液；利用旋挖机钻孔，在钻进过程中，将浆液池内的护壁浆液导入桩孔内，保持钻进液面平衡；钻孔完成后，清理沉渣，回收护壁浆液；其中，浆液池内装入的护壁浆液为聚丙烯酰胺水溶液，聚丙烯酰胺水溶液的浓度满足如下要求：在钻进过程中，桩孔内的护壁浆液粘度控制为28Pa·s至35Pa·s。本发明采用聚丙烯酰胺水溶液代替传统的泥浆护壁，聚丙烯酰胺具有絮凝性、触变性、降阻性、增稠性，具有良好的防坍塌和防渗堵漏作用，确保旋挖钻孔施工能够高质量地、快捷地、低成本地完成。
Wall protection construction method for rotary excavating pile
用于旋挖桩的护壁施工方法
NI YONG (Autor:in) / WAN JIANG (Autor:in) / ZENG ZHAOJIANG (Autor:in) / CHEN PENGXU (Autor:in) / PENG YUQI (Autor:in)
15.01.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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