Study on Impact of Various Void Conditions on Shallow Rectangular Masonry-Concrete Power Tunnel and Surrounding Roads

To solve the problem of a potential void near shallow rectangular masonry-concrete power tunnel, ground-penetrating radar (GPR) detection technology is used and multiple GPR lines are placed to detect concealed void. The images circular square voids obtained, which can help increase accuracy identification. models that cover 9 created investigate how various forms positions will affect internal forces tunnel structure surrounding roads. In terms morphological characteristics, according research results, impact on roads slightly stronger than If at 135° 115°, respectively, maximum shear force occurs floor. both axial right side wall. 135°, bending moment 155°, ground settlement pavement stress maximized. Generally, if middle or lower part wall floor in its adverse worst. Therefore, parts should be intensified, order eliminate risk tunnel.