摘要
重点介绍青藏铁路风火山隧道穿越厚层地下冰层施工中 ,针对地下冰层易热融滑塌的特点 ,摸索出一些行之有效的施工技术措施 :井挖采用预留光爆层光面爆破 ,减少装药量 ,设置保温设施 ,暖季施工利用夜间通冷风 ,低温下快速有效封闭围岩 ,加快模筑混凝土衬砌速度 ,铺设保温板 ,加强测温工作等。
An introduction is given to effective measures against the deep underground ice layer, which easily thaws and collapses when heated. Such measures include, smooth blast with less charge volume, heat insulation, cold air ventilation in summer, rapid and effective sealing of surrounding rock, accelerating the lining of tunnel, installation of heat-insulating slab, and monitoring of temperature, etc.
出处
《铁道标准设计》
2004年第6期89-91,共3页
Railway Standard Design
