超长公路隧道施工对水土保持的影响及其对策研究

Research on Impact and Countermeasures of Extra Long Highway Tunnel Construction on Soil and Water Conservation

天山胜利隧道地处天山1号冰川、二级水源地保护区、多个国家森林公园等环境脆弱区域内,建设过程中的水土保持问题对当地生态环境保护具有重要意义,调研发现影响水土流失的主要因素为隧道弃渣场的防护、占用场地和影响区域表层土的利用、施工废水及隧道涌水、隧道建设附属设施防护和恢复等。通过室内试验与数值模拟相结合,确定了隧道弃渣场的选址位置、施工废水及隧道涌水处理方法、临时场地设施防护和修复方法。

The Tianshan Shengli Tunnel is located in environmentally fragile areas such as the Tianshan No.1 Glacier,the secondary water source protection area and multiple national forest parks.The soil and water conservation issues during the construction process are of great significance to the local ecological environment protection.Research has found that the main factors affecting soil erosion are the protection of the tunnel abandoned dreg field,the utilization of the surface soil in the occupied and affected areas,construction wastewater,and tunnel water inflow protection and restoration of ancillary facilities for tunnel construction.By combining indoor experiments with numerical simulations,the location of the tunnel abandoned dreg field,the treatment methods for construction wastewater and tunnel surge,and the protection and repair methods for temporary site facilities were determined.