Research On Stability And Prediction Deformation Model Of Surrounding Rock About Neighboring Highway Tunnels Under Construction

Neighborhood Tunnel is adaptable of terrain and geological conditions, and the construction process is simple, the structure form is single, easy to waterproof, low cost. In the future for quite a long time, as the preferred program of short tunnels in the mountain tunnels construction will be widely used. But it has not the suitable final deformation prediction mathematical calculation measures of the stability of surrounding rock about neighboring highway tunnels under construction, which leaving a hidden danger to the tunnel construction safety and project quality.In this paper, through FLAC3D Software simulated three-dimensional construction process of the neighboring highway tunnels.And tracking statistics the eigenvalue of crown settlement and the displacement of the horizontal,and construct the training sample. Then introducing the genetic algorithm and support vector regression intelligent algorithm in to the research,train the numerical results,establish intelligent model predicted final deformation of surrounding rock about neighboring highway tunnels under construction. Put physical and mechanical parameters, geological conditions, depth and support parameter of surrounding rock about practical engineering into the model, you can get the high accuracy final deformation of surrounding rock.A range of the two-lane Neighboring Highway Tunnels’final deformation about IV, V grade rock is established through a lot of calculation,the range of final deformation provides a convenient estimate for the on-site construction. Comparison the final deformations iby evolution of support vector regression intelligent model and standardize methods,the former is more precise.The evolution of support vector regression intelligent model predicted final deformation of surrounding rock about neighboring highway tunnels under constructiona is more precise,the range of tunnel divided is more sophisticated,in the actual construction and design it will be more convenient.