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通常隧道内部空气相对湿度较高,一旦在施工阶段出现路面及墙面凝结水现象将影响路面铺设等施工环节的实施。目前常用的隧道路面除湿方法有通风法、吸湿法、烘干法等。对通风法建立传质模型,计算比较在不同隧道通风方式下不同影响因素对除湿经济性的影响,计算结果表明,长积水段不利于隧道纵向通风的通风除水,短积水段不利于隧道半横向通风的通风除水,积水段长度对全横向通风路面除湿效果的影响较小。积水面与空气中水蒸汽分压力压差过于接近(<100 Pa)将无法仅靠通风有效消除积水。此外,利用自然通风消除积水所需条件较为苛刻,即使达到也极可能无法在短时间内消除路面积水。
Normally, the air inside the tunnel is relatively high in relative humidity. Once the pavement and the surface of the wall condense during the construction phase, the phenomenon of condensation will affect the implementation of the pavement construction. The commonly used method of dehumidification of the tunnel surface ventilation, moisture absorption method, drying method. The mass transfer model is established for the ventilation method, and the influence of different factors on the dehumidification economy under different tunnel ventilation modes is calculated and compared. The calculation results show that the long water section is not conducive to the longitudinal ventilation of the tunnel, Tunnel semi-transverse ventilation ventilation in addition to water, the length of the water section of the full horizontal ventilation pavement dehumidification effect less affected. Water surface pressure is too close to the partial pressure of water vapor in air (<100 Pa) Water will not be effectively removed by ventilation alone. In addition, the use of natural ventilation to eliminate stagnant water is more demanding, even if it is likely to be unable to eliminate road water in a short time.