土工基础

›› 2014, Vol. 28 ›› Issue (4): 44-47.

• 工程实录 • 上一篇    下一篇

超高地热条件下特长引水隧洞降温关键技术

臧洪敏1，李树忱2，马腾飞2，张露晨2，王述磊3   

  1. （1.山东省路桥集团有限公司，济南 250021；2.山东大学，济南 250061；3.中铁十四局集团有限公司，济南 250000）
  • 收稿日期:2014-05-12 出版日期:2014-08-20 发布日期:2014-08-27
  • 作者简介:臧洪敏（1974-），男，项目总工、项目经理，山东省路桥集团有限公司。研究方向为路桥工程。

Construction of a Long Water Diversion Tunnel under High Geo-thermal Temperature Conditions

ZANG Hongmin1, LI Shuchen2, MA Tengfei2, ZHANG Luchen2, WANG Shulei3   

  1. （1.Shandong Luqiao Group Co., Ltd., Jinan, 250021；2.Shandong University, Jinan 250061；
    3.China Railway 14th Construction Bureau Co., Ltd., Jinan 250000）
  • Received:2014-05-12 Online:2014-08-20 Published:2014-08-27

摘要： 娘拥水电站引水隧洞罕见的超高地热给隧洞施工带来了极大的难度，爆破后岩体表面温度达75 ℃，涌水最高温度为82 ℃，洞内环境温度高达到53 ℃。研究建立了超高地热条件下隧洞通风降温系统，洞内环境温度降至30 ℃以下，确保了良好的施工环境，为超高地热段隧洞的正常建设创造了有利条件。

关键词: 引水隧洞, 超高地热, 降温措施, 技术

Abstract: The excessively high geothermal temperature in a water diversion tunnel of Niangyong Hydraulic Electricity Generation Station resulted in serious construction difficulties: the surface temperature of rock mass after the blasting reached 75 degrees Celsius; the highest water rushed in the tunnel was 82 degrees Celsius; the ambient temperature in the tunnel was 53 degrees Celsius. A temperature reduction system through the ventilation was established and the temperature in the tunnel was able to be reached to 30 degrees Celsius. A safe and comfortable tunnel excavation condition could be developed under the excessively high geothermal conditions.

Key words: Water Diversion Tunnels, Excessive High Geo-thermal Conditions, Temperature Reduction Measures, Construction Technique