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A platform for research: civil engineering, architecture and urbanism
Liquid nitrogen treatment method for leakage water of underground diaphragm wall of water-rich stratum
The invention discloses a water-rich stratum underground diaphragm wall leakage water liquid nitrogen treatment method which is applied to the technical field of deep foundation pit construction enclosure structure leakage water leakage stoppage and comprises the steps that firstly, liquid nitrogen freezing hole construction is conducted, and then freezing system installation and freezing refrigeration design are conducted; and liquid nitrogen demand amount calculation and freezing time estimation are carried out according to needs, temperature and liquid nitrogen freezing are monitored in real time through a temperature measurement system, whether the average temperature of frozen soil and the average temperature of temperature measurement holes are qualified or not is judged according to construction requirements, if yes, cofferdam dismantling, wall seam treatment and bottom layer base plate construction are carried out, and if not, cofferdam construction is carried out. And finally, after freezing construction is finished, the freezing pipe is pulled out, and the grouting pipe is placed for thaw settlement grouting. Compared with a traditional leaking stoppage process, the method provided by the invention has the advantages that water is stopped more quickly, the freezing and cooling speed of liquid nitrogen is high, soil loses less water, the generated freezing pressure is smaller, and the dissolution and sedimentation after unfreezing are smaller and the relative risk is smaller.
本发明公开了一种富水地层地下连续墙渗漏水液氮处理方法，应用于深基坑施工围护结构渗漏水堵漏技术领域，其中方法包括：首先进行液氮冻结孔施工，然后进行冻结系统安装和冻结制冷设计，以及根据需要进行液氮需要量计算和冻结时间估算，并通过测温系统实时监测温度，液氮冻结，根据施工要求判断冻土的平均温度和测温孔的平均温度是否合格，若合格，则进行围堰拆除、墙缝处理和底层垫板施工，最后冻结施工结束后拔出冻结管，安放注浆管进行融沉注浆。本发明的方法较传统堵漏工艺更加快速止水，且由于液氮冻结降温速度快土壤失水少所以产生冻涨压力较小，解冻后溶解沉降也较小相对风险较小。
Liquid nitrogen treatment method for leakage water of underground diaphragm wall of water-rich stratum
The invention discloses a water-rich stratum underground diaphragm wall leakage water liquid nitrogen treatment method which is applied to the technical field of deep foundation pit construction enclosure structure leakage water leakage stoppage and comprises the steps that firstly, liquid nitrogen freezing hole construction is conducted, and then freezing system installation and freezing refrigeration design are conducted; and liquid nitrogen demand amount calculation and freezing time estimation are carried out according to needs, temperature and liquid nitrogen freezing are monitored in real time through a temperature measurement system, whether the average temperature of frozen soil and the average temperature of temperature measurement holes are qualified or not is judged according to construction requirements, if yes, cofferdam dismantling, wall seam treatment and bottom layer base plate construction are carried out, and if not, cofferdam construction is carried out. And finally, after freezing construction is finished, the freezing pipe is pulled out, and the grouting pipe is placed for thaw settlement grouting. Compared with a traditional leaking stoppage process, the method provided by the invention has the advantages that water is stopped more quickly, the freezing and cooling speed of liquid nitrogen is high, soil loses less water, the generated freezing pressure is smaller, and the dissolution and sedimentation after unfreezing are smaller and the relative risk is smaller.
本发明公开了一种富水地层地下连续墙渗漏水液氮处理方法，应用于深基坑施工围护结构渗漏水堵漏技术领域，其中方法包括：首先进行液氮冻结孔施工，然后进行冻结系统安装和冻结制冷设计，以及根据需要进行液氮需要量计算和冻结时间估算，并通过测温系统实时监测温度，液氮冻结，根据施工要求判断冻土的平均温度和测温孔的平均温度是否合格，若合格，则进行围堰拆除、墙缝处理和底层垫板施工，最后冻结施工结束后拔出冻结管，安放注浆管进行融沉注浆。本发明的方法较传统堵漏工艺更加快速止水，且由于液氮冻结降温速度快土壤失水少所以产生冻涨压力较小，解冻后溶解沉降也较小相对风险较小。
Liquid nitrogen treatment method for leakage water of underground diaphragm wall of water-rich stratum
一种富水地层地下连续墙渗漏水液氮处理方法
FAN WEIXING (author) / FAN RUOYI (author) / WANG YINDI (author) / SHI BO (author) / WU JINCHENG (author) / HOU LIANG (author) / MIAO LEI (author)
2023-06-27
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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