Research on Key Technology for Soft Rock Tunnel Construction under Complex Crustal Stress Condition
Soft rock has low strength and poor self-stabilization capacity.Under the action of complex crustal stress,it is more prone to catastrophic phenomena such as large deformation and support structure failure.Taking the construction of complex crustal stress tunnel as the breakthrough point,this paper analyzes the crustal stress analysis method of soft rock tunnel,focuses on the field test method,initial simulation analysis method and surrounding rock stress and strain characteristic test,helping construction units to truly understand the crustal stress condition of the engineering site and objectively evaluate the actual influence of complex working conditions on the tunnel construction situation.It also expounds the construction path of soft rock tunnel under complex working conditions,aiming at effectively controlling the large deformation of surrounding rocks in the construction process,ensuring construction safety and construction progress,and reducing the influence of crustal stress on surrounding rocks.
complex crustal stress conditionsoft rock tunnelkey construction technology
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