有轨运输改无轨运输方案比选r——以新凉风垭隧道瓦斯突出为例

摘要

The liangfengya tunnel of Chongqing-Guizhou railway has a high level of coal-gas concentration and it is identified as an I-class high-risk tunnel. The original design of the tunnel is by rail transport, which requires more complicated construction process, larger space, higher cost, and also causes difficulties in transportation organization.The paper illustrates the construction principle of the coal-gas tunnel, demonstrates the feasibility of a non-rail transportation plan, and proposes a thorough modification from rail transport to non-rail transport.The analysis indicates that the non-rail transport plan out performs the rail transport plan. The findings of the study can offer useful references to the construction of similar coal-gas tunnels.%渝黔铁路新凉风垭隧道煤层瓦斯浓度高并具有突出风险,为I级高风险隧道,该隧道原设计采用有轨运输,其工序较复杂,场地要求大,成本投入高,运输组织难.本文主要阐述煤层瓦斯隧道施工原则,论证瓦斯突出隧道无轨运输方案的可行性,深入进行有轨运输改无轨运输方案的分析比较.结果表明,无轨运输优于有轨运输,为今后类似瓦斯突出隧道施工提供有益的借鉴与参考.