| Autor: |
Li, Yun, Cui, Zhenjiang, Liu, Shiyang, Zhang, Xuefu, Gao, Feng |
| Zdroj: |
Desalination & Water Treatment; December 2023, Vol. 314 Issue: 1 p359-367, 9p |
| Abstrakt: |
The crystal blockage of the tunnel drainage system seriously affects the safety and stability of the lining structure of the tunnel, and there are many factors that affect the crystal blockage of the system. CO2concentration is one of the factors. This paper uses indoor model test to study the influence of CO2concentration on the crystallization of tunnel drainage pipe under different water filling conditions is studied. First, it studies the crystallization amount of each pipe section under six working conditions. According to the results, the crystallization amounts of sections 4 and 5 of the pipe are greater than those of other sections. Section 5 has the highest amount of crystallization. In other words, the crystallization happens more at the outlet section of the horizontal drainage pipe; (2) When the CO2concentration between 10~15 kg/cm2, the crystallization amount of the test pipe gets an upward trend and when the CO2concentration is around 15 kg/cm2, the crystallization reaches its maximum; (3) When the test tube is filled with water, the amount of crystallization will decrease as the flow rate becomes higher. When the factor of CO2concentrations is controlled, the crystallization amount is less when all the pipe is filled with water than when it is half filled. The research results can guide the maintenance and daily monitoring of the tunnel drainage system, and support the formulation of the daily maintenance plan for the drainage system. |
| Databáze: |
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