大瑞铁路长大隧道地热段技术经济研究

随着西部大开发战略的实施,在西部山区修建的铁路逐渐增多,建设中遇到的长大隧道也越来越多,还有地热高温隧道,其施工存在一定的难点.此文以大瑞铁路重点地热高温隧道为例,在阐述其工程特点和水文、地质情况的基础上,就如何采取地热降温措施进行探讨,并对施工的经济性进行分析,提出应增加的有关费用,确保隧道工程投资的准确性。

Technical Economy Research of Geothermal Section in Long and Large Tunnel of Darui Railway

Along with the implementation of the west development strategy, the railway construction in the western mountains are increasing. At the same time, the long and large tunnel and geothermal heat tunnel appear more and more. It has certain difficulty in the construction. Taking the focused geothermal heat tunnel in Darui railway for example, on the basis of expounding the engineering characteristics and hydrogeological condition, the geothermal cooling measures are discussed, and the economy of construction is analyzed. Then, the relevant cost should be increased is put forward to ensure the accuracy of the tunnel engineer ing investment.