论文部分内容阅读
江门至罗定高速公路采用单洞三车道100km/h设计,初步设计同深度比较线金鸡顶隧道设计里程K107+780~K107+950区段下穿江咀村建筑群,隧道埋深约25~35m,两平行隧道线间距约40m,为分离式隧道。本段穿越的房屋主要为土房和2~3层砖房,抗震极差,部分房屋屋顶为瓦片,易掉落。为了研究此阶段选线的隧道设计可能对房屋产生的风险,采用数值模拟隧道施工过程,分析其施工过程中房屋的沉降情况和隧道本身的安全性,提出采取相应的房屋控制措施和微振爆破措施尽可能保证房屋安全,为总体线位的深度选择提供参考依据,同时可为相似工程施工提供参考。
Jiangmen to Luoding Expressway with single-lane three-lane 100km / h design, the initial design with the depth of the line Jinji Top Tunnel K107 + 780 ~ K107 + 950 mileage section wearing Jiang Tsui village buildings, the tunnel buried depth of about 25 ~ 35m, two parallel tunnel spacing of about 40m, for the separation of tunnels. This section of the main housing for the soil and 2 to 3-story brick houses, very poor resistance, some of the roof tiles, easily falling. In order to study the possible risk to the house caused by the tunnel design of route selection at this stage, the tunnel construction process is numerically simulated, the settlement of the house during the construction process and the safety of the tunnel itself are analyzed, and the corresponding house control measures and microseismic blasting Measures to ensure housing safety as much as possible to provide a reference for the depth of the overall line of choice, and can provide reference for similar projects.