高寒地区抽水蓄能电站地下厂房施工期通风、保暖、散烟系统研究

发布时间：2018-08-04 18:30

【摘要】：以河北省丰宁抽水蓄能电站地下厂房施工为研究对象,根据各洞室贯通的先后顺序,将地下洞室群施工期的通风分为一期通风、二期通风、三期通风3个阶段,不同阶段设计不同的方案。研究设计出高寒地区冬季隧道内施工防寒保暖散烟系统,结合管道通风和自然通风的方式进行通风。现场应用效果明显,各掌子面及掘进施工断面粉尘和有害气体浓度在短时间内大幅度降低,施工断面通道附近粉尘浓度降低到10 mg/m3及以下的水平,通风洞主体通道粉尘浓度甚至降低到5 mg/m~3以下的水平。该技术实现了洞室群内施工周期各阶段风流的有序流动更新,降低了施工成本,保证了施工质量,创造了良好的施工环境,为同类型高寒地区水电站建设提供了经验参考。
[Abstract]:Taking the construction of underground powerhouse of Fengning pumped Storage Power Station in Hebei Province as the research object, according to the sequence of opening of each cavern, the ventilation of underground cavern group during construction period is divided into three stages: one stage ventilation, the second stage ventilation, the third stage ventilation. Design different schemes at different stages. This paper studies and designs the system of preventing cold and keeping warm smoke in winter tunnel in alpine area, which is ventilated by pipe ventilation and natural ventilation. The field application effect is obvious, the dust and harmful gas concentration of each face and tunneling section of the construction are greatly reduced in a short time, and the dust concentration near the tunnel of the construction section is reduced to the level of 10 mg/m3 or less. The dust concentration in the main channel of the tunnel is even lower than 5 mg/m~3. The technology realizes the orderly flow renewal of wind flow in each stage of the construction cycle in the cavern group, reduces the construction cost, guarantees the construction quality, creates a good construction environment, and provides an empirical reference for the construction of hydropower stations in the same type of high and cold regions.
【作者单位】：河北丰宁抽水蓄能有限公司;华北科技学院安全工程学院;
【基金】：国家自然科学基金(51404105) 河北省自然科学基金(E2015508047) 中央高校基本科研业务费资助(3142016034;3142015085)
【分类号】：TV735

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