摘要
研究目的:随着我国铁路事业的快速发展,铁路建设中相当多的隧道面临高岩温、高水温等问题,为寻找适用于高温环境条件下铁路隧道设计的方法,并能形成一套系统完整的应对高岩温隧道设计施工技术,本文以新建拉萨至日喀则铁路高岩温隧道的设计、施工作为依托,通过国内外隧道、煤矿、深部矿井高温热害的施工与降温措施调研,结合拉日线高岩温隧道所处的高海拔、低气压、缺氧等特殊条件,以吉沃希嘎高岩温隧道为主要研究对象,进行现场测试试验和效果分析,其成果为拉日铁路的勘察设计和施工提供理论依据。研究结论:(1)为便于使用,热害分级可以从隧道勘察设计和施工两个阶段分别进行分级,并在海拔3 000 m及以上的高原地区,热害等级应提高一级;(2)热害设防应以通风降温、低温冷水降温、喷雾洒水降温、隔绝高温围岩、冰块冷却降温等非人工制冷降温技术为主,并结合其它降温措施;(3)研究结论在拉日铁路高岩温隧道工程修建中运用效果良好,产生了较大的经济和社会效益,可为国内高岩温隧道工程提供参考和借鉴。
Research purposes： With the rapid development of China railway undertakings, a considerable number of tunnel face high rock temperature, high water temperature and other issues. In order to look for the railway tunnel design methods under high temperature environment, and form a complete system to deal with high - temperature rock tunnel design and construction techniques, this paper takes the new railway from Lhasa to Xigaze high temperature rock tunnel design and construction as a backing, surveys and studies the construction and cooling measures for high temperature and heat damage of tunnels, coal mines and deep mines at home and abroad, considering the special climate condition from Lhasa to Xigaze such as high altitude, low air pressures, poor oxygen etc. , chooses Jiwoxiga high temperature rock tunnel as the main study object, conducts a field test trials and effects analysis, accordingly results can provide a theoretical basis. Research conclusions：For ease of use, heat damage is graded from survey, design and construction stages, and in the plateau region of more than 3 000 metres, heat damage level should improve one grade. Heat damage fortification should be based on non - artificial refrigeration cooling technology, such as ventilation cooling, cold water cooling, spray sprinkler cooling, isolated hot rock, ice cooling etc. , and in combination with other measures to cool. Conclusions made good use of effects in the construction of Lhasa to Xigaze high temperature rock tunnel, resulting in greater economic and social benefits, which can provide references for other similar projects
出处
《铁道工程学报》
EI
北大核心
2013年第12期69-73,共5页
Journal of Railway Engineering Society
关键词
隧道工程
高海拔
热害等级
设防措施
tunnel engineering
high altitude
grades for heat damage
fortification measures
