BIM+GIS技术在分岔特长隧道设计中的应用研究

BIM+GIS技术主要应用在设计阶段，包括通风方案优化、排水设计优化、分岔隧道数字化设计与虚拟建造、桥隧相接精细化设计等。通过二、三维设计结合，提高隧道复杂节点设计质量，设计意图更容易传达；动态模拟隧道通风、排水设计方案及效果，为后期运营提供科学指导；BIM+GIS技术高效选择最优路线；虚拟建造，优化设计方案，规避后期施工安全风险。某项目运用BIM技术解决超特长隧道设计痛点，提出解决方案，收到较好的效果，对同类型项目具有较强的借鉴意义，具有一定的推广应用价值。

Study on Application of BIM+GIS Technology in Design of Bifurcated Extra-long Tunnel

BIM+GIS technology is mainly applied in the design phase including the optimization of ventilation scheme, optimization of drainage design, digital design and virtual construction of bifurcated tunnel, and detailed design of bridge-tunnel connection. Through the combination of two and three-dimensional designs, the design quality of complex nodes of the tunnel is improved and the design intent is more easily conveyed. The design schemes and effects of tunnel ventilation and drainage are dynamically simulated in order to provide the scientific guidance for the later operation. BIM+GIS technology efficiently selects the optimal route to simulate the construction and optimize the design scheme in order to evade the safety risks of later construction. BIM technology is used to solve the design problems of extra-long tunnel. The solutions are proposed and the good results are achieved, which has the strong reference significance for similar projects, and has a certain value of popularization and application.