Deformation Mechanism and Control Technology of Surrounding Rock in the Deep-Buried Large-Span Chamber

Table 1

Supporting theory and technology of deep-buried roadway in recent ten years.

No.	Authors	Support theory and research methods	Support technology
1.	Xie [13]	Established the spatial model of deep mining and the dynamic optimization model of the production plan and proposed the unloading technology of grave excavation face, the integrated pressure relief control strategy of the deep high-stress pillar.	Proposed the stress isolation technology of deep pressure relief curtain.
2.	He and Kanji et al. [3, 14]	Studied the deformation and failure mechanism, test methods, and equipment in deep soft rock engineering from water softening mechanism, based on the scientific definition of deep mining.	Proposed the deep soft rock large deformation design methods and control technology and developed a new constant resistance large deformation material, which is based mainly on constant resistance large deformation bolt.
3.	Li et al. [15, 16]	Established a calculation theory on the bond strength of the interface between the anchoring agent and surrounding rock.	Developed a new cementitious antiwashout grouting material and a new high-strength bolt-grouting technology.
4.	Zuo et al. [6, 17]	Theoretically derived the Hoek-Brown failure criterion based on the linear elastic fracture theory and proposed a stress gradient failure theory of surrounding rock.	Proposed uniform strength support in the deep roadway.
5.	Kang et al. [7, 18, 19]	Investigated the characteristics of deformation and failure of the entry of the tempospatial relations between heading and working faces through field study and numerical modeling.	Proposed the synergy strata control theory with bolting-modification-destressing for the roadways with 1 000 m buried depth and developed the CRMG700 rock bolt rebar with extrahigh strength.
6.	Wu et al. [20, 21]	Considered that the intersection angle of a bolt length direction and the interface of rock layers have a significant effect on the distribution and variation of axial force in bolts.	Proposed an improved support scheme for the roadway in steeply inclined geological formations, using long cables to limit severe deformation, short cables, and enclosed U-shaped steel sets to improve the ground stress state.
7.	Xie et al. [22, 23]	Deduced the equation of maximum shear stress in the deep beam structure and established the mechanical model of a truss anchor supporting roof beams.	Put forward a powerful anchor support system and anchor cable adaption technology.
8.	Yu et al. [24]	Studied the mechanism of docking long bolts and collaborative support.	Proposed a collaborative support method that uses long and short bolts.
9.	Lu et al. [25]	Studied the deformation and failure characteristics and the mechanism of “yielding support” for anchor bolts and cables.	Proposed a new “highly resistant, yielding” support system with a core of high strength, yielding bolts, and anchor cables.
10.	Tan et al. [26]	Considered the foamed concrete absorbed most of the deformations, the shrinkage of the U-shaped steel was significantly reduced.	Proposed a combined supporting system, which includes steel mesh, bolt, anchoring cable, shotcrete, compressible U-shaped steel, foamed concrete damping layer, and fractured rock cushion layer.
11.	Wu et al. [27]	Examined the influence of horizontal stress direction, pillar size between the roadways, and the excavation sequence of the roadways.	Proposed a reinforcing system that consists of high strength rock bolts and cables.
12.	Yang et al. [28]	Considered the broken and fractured rock mass near the roadway opening as ground small structure and deep stable rock mass as ground large structure.	Proposed a support technology focusing on cutting off the water, strengthening the small structure of the rock, and transferring the large structure of the rock.
13.	Wang et al. [29]	Established the governing equation for slurry seepage by utilizing the seepage mechanics theory and simulated the slurry penetration and diffusion process by utilizing the COMSOL software.	Proposed a new coupled bolting-grouting support technology with grouting anchor cable and grouting bolt.
14.	Meng et al. [30]	Plotted the safety coefficient contour of surrounding rock to judge the distribution form of the fractured zone in the roadway, which assigns rock failure criteria to calculate the rock mass unit.
15.	Zhu et al. [31]	Developed a parametric asymmetric Voronoi block generation program by Python and implemented the parametric modeling of laminated strata in UDEC.
16.	Zhang et al. [32]	Established the mechanical model of mining abutment pressure transmission in floor base on the theory of semi-infinite plate body in elasticity.
17.	Gong and Li et al. [33, 34]	Investigate the spalling process in deep rectangular excavated tunnels under three-dimensional stress and considered that under the three-dimensional stress condition.
18.	Li et al. [35]	Proposed a combined supporting scheme “double layer long bolt-mesh-shotcrete and concrete-filled steel tube.”