土工基础

›› 2018, Vol. 32 ›› Issue (3): 338-342.

• 工程实录 • 上一篇    下一篇

东南沿海某市域铁路S2线一期工程过江隧道浅层有害气体有控释放试验段研究与分析

蔡守志1，胡 丰1，杜运国2，苟长飞2   

  1. （1.浙江省地矿勘察院，杭州 310013；2.温州市铁路与轨道交通投资集团有限公司，温州 32500）
  • 收稿日期:2018-05-15 修回日期:2018-05-17 出版日期:2018-06-22 发布日期:2018-06-26
  • 作者简介:蔡守志（1967-），男，高级工程师，研究方向为岩土工程（地下浅层气的勘察技术、设备及浅层气工程处理方向）。

The Controlled Release of Shallow Buried Toxic Gas in an River Crossing Railway Tunnel

CAI Shouzhi1, HU Feng1, DU Yunguo2， GOU Changfei2   

  1. (1.Zhejiang Geological and Mineral Exploration Institute Co., Ltd., Hangzhou 310013；
    2.Wenzhou Railway and Rail Transportation Investment Group Co., Ltd., Wenzhou 32500)
  • Received:2018-05-15 Revised:2018-05-17 Online:2018-06-22 Published:2018-06-26

摘要： 某市域铁路经前期有害气体的专项勘察，基本查明了浅层有害气体的分布、范围、压力及流量，经研究决定在隧道DK51+661~DK51+709里程段建立了浅层有害气体有控释放试验段，目的是通过试验验证浅层气体有控释放的相关参数（释放孔安全距离、安全压力、流量及地面沉降等参数），为设计、施工提供依据。

关键词: 有害气体, 安全距离, 安全压力, 有效应力, 地面沉降

Abstract: The distribution, vertical and horizontal limits, pressure as well as flow rate of the shallow buried toxic gas along the alignment of a regional railway was quantified in the preliminary subsurface investigations. A trial toxic gas release test section was set up between tunnel station DK51+661 and DK51+709 to verify the design parameters, such as safe distance for the gas release boreholes, safe pressure limits, gas flow rate and ground subsidence information. The results of the trial test section would provide valuable information for the tunnel design and construction.

Key words: Toxic Gas, Safe Distances, Safe Pressures, Effective Stress, Ground Subsidence