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Article
Open AccessStudy on the influence law of cavities behind the shotcrete lining on the lattice girders
The field monitoring data showed that a small amount of main reinforcement bars of lattice girder at the arch of a tunnel were pulled, and the calculation showed that the initial support structure should be co...
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Article
Experimental study on the effect of anchored bolts on failure and strength behavior of nonpersistent jointed rock model
Anchored bolts are well known as an effective measure to support the rock masses, after all with stiff steel bolts being inserted into them. Although numerous researches have been carried out on anchored joint...
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Article
Open AccessPrimary support optimization of large-span and shallow buried hard rock tunnels based on the active support concept
Considering the large-span underground excavation subway station of Qingdao Metro Line 6 of China for analysis, it is necessary to optimize the traditional support system by investigating relevant codes and ot...
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Article
Study on a Damage Model and Uniaxial Compression Simulation Method of Frozen–Thawed Rock
To evaluate the deterioration degree of rock freeze–thaw damage in cold area engineering, it is necessary to establish an accurate freeze–thaw rock damage model and its uniaxial compression numerical simulatio...
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Article
An upper bound design method for roof bolting support in roadways with top coal
The roadways with top coal are a common type of roadways in thick coal seam mining. After excavation of such roadways, the top-coal rock mass is often loose and broken, and the roof deformation and failure are...
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Article
Experimental Study of Mechanical and Permeability Behaviors During the Failure of Sandstone Containing Two Preexisting Fissures Under Triaxial Compression
Rock masses are typical inhomogeneous geological materials that contain many fissures and cracks. The coupling effect of the crack propagation and seepage evolution in rocks is very important to the safety of ...
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Article
Determination of the bearing capacity of a Concrete-filled Steel Tubular arch support for tunnel engineering: Experimental and theoretical studies
Although Concrete-filled Steel Tubular (CFST) arch support technology for transportation tunnels and mining roadways is develo** rapidly, research regarding the determination of the bearing capacity of the C...
