Research On The Calculation Method & Monitoring Of Surrounding Rock Pressure For Highway Tunnel

Owing to the calculate formula for the highway tunnel surrounding rock press calculate method at present mostly comes from the calculate method of the railway tunnel, and the shape and span and highness of the highway tunnel is different from railway tunnel, the surrounding rock press value of highway tunnel calculated in the present theory formula is different from the locale measure value in great degree. It isn't logical to use the formula to calculate the surrounding rock press which is used to design the highway tunnel in the criterion. The study indicates that it isn't uneconomical to use the surrounding rock press value which is calculated with the formula in the criterion to design.Whereas the reason above, this text bases on the Zheng Yang and Ban Zhulin highway tunnel to the Yu Xiang freeway tunnel and comparatively analyses the calculation methods, this text compares the theory value to the locale value of the side press coefficient, and compares the theory value to the locale monitoring value and the numerical simulation value of the deep burying and the shallow burying highway tunnel, and puts a proposal out for the criterion formula which calculates the surrounding rock press, and analyses the distributing character of the surrounding rock press of the highway tunnel. The text seduces the propositional value confine of the side press coefficient. For the deep highway tunnel, the flank press coefficient is comparatively in reason to the criterion, and for the shallow highway tunnel, when the surrounding rock is more fragmented, the value that the flank press divides by the vault press is larger. As the fragment degree is deeper, the ratio is larger.I hope that the content and result in this text can bring the reference worthiness for the design and construction of the highway tunnel.