Results of pull tests of rock bolts and cable bolts in Sydney sandstone and shale

Salcher, Michael; Bertuzzi, Robert

doi:10.1016/j.tust.2018.01.004

Cited by 54 publications

(14 citation statements)

References 3 publications

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“…It is expected, that, in the real conditions, the rock bolt length effect on the indications of the device will be comparable with the parameter definition error. Coefficients values in the analytical expression (1), that links the informative parameter with the clamping degree of various lengths rock bolts, are given in Table 2. were clamped before the sections were filled.…”

Section: Resultsmentioning

confidence: 99%

Physical modeling of the rock bolt interaction with the rock massif

et al. 2019

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The results of the physical modeling of the “rock bolt – rock massif” system are presented. The characteristics of rock bolt free oscillations depending on the degree of its clamping and tension were studied on special test benches. Oscillations were caused by a single hit to the rock bolt end. It has been established, that the relaxation time of rock bolt free oscillations is the most informative parameter for non-destructive testing. Experimental dependences, that connect the informative parameter with the characteristics of the rock bolt fastening quality, have been determined. An optimal scheme for registering the oscillations in the “rock bolt – rock massif” system is proposed. The basic data has been obtained to substantiate the method of non-destructive testing the quality of rock bolt fastening.

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Section: Resultsmentioning

confidence: 99%

Physical modeling of the rock bolt interaction with the rock massif

et al. 2019

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“…Reinforcement provided by rock bolt is the promotion of the natural self-supporting ability within the host rock mass. Mechanical properties of rock bolt and bolt failures caused by rock mass have been studied extensively in many ways, including laboratory and field tests [1][2][3][4][5][6][7][8][9][10], numerical simulations [11][12][13][14][15][16][17], and analytical method [18][19][20][21][22][23]. And, some scholars study its mechanical properties by analyzing its dynamic response recently [24][25][26][27].…”

Section: Prefacementioning

confidence: 99%

Study of Shear Capacity of Jointed Rock Mass with Prestressed Anchor Bolt

Zhao

Hong-tao

Nie

2019

Advances in Civil Engineering

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Rock mass failure caused by jointed plane is the common disaster in geotechnical engineering. Research on shearing property of jointed rock mass with prestressed anchor bolt and its mechanical property is an aspect for the stability analysis of rock slope and tunnel. This paper studies the stress and deformation of bolt and jointed plane, as well as anchored body and rock mass during shearing by indoor model testing and theoretical analysis. The shearing strength and mechanical property of anchored jointed plane have been systematically studied, and the additional force caused by deformation of prestressed anchor bolt and jointed rock mass during the shearing has been proposed and verified. The anchorage interaction between rock mass and bolt is revealed.

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“…Therefore, designing the support structures, selecting the excavation methods and studying the stability of the surrounding rock of super-span tunnels are widely considered by scholars. A series of researches have been carried out in the field of super-span tunnels [7][8][9]. Some achievements have been made in the design of supporting structures.…”

Section: Introductionmentioning

confidence: 99%

Field Monitoring of the Deformation and Internal Forces of the Surrounding Rock and Support Structures in the Construction of a Super-Span High-Speed Railway Tunnel—A Case Study

et al. 2020

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A super-span tunnel that has the characteristics of a large excavation area, a small high-span ratio and a significant spatial effect exhibits a complex mechanical response during the excavation process. In this paper, taking the Badaling Great Wall station in Beijing, China as the engineering background, a case study of field monitoring a super-span tunnel has been presented. A typical monitoring section was selected in the super-span transition section of the tunnel and the deformation and forces of both the surrounding rock and the support structures were systematically monitored. The dynamic evolution and the spatial distribution characteristics of the monitoring data, including the internal displacement of the surrounding rock, the tunnel displacement, the contact pressure between the surrounding rock and the primary supports, the contact pressure between the primary and secondary supports, the axial forces in the bolts and cables, the internal forces in both the steel arches and the secondary supports and the internal stresses of the surrounding rock, were analyzed. The results of the monitoring and the analyses have shown that the deformation and the forces acting on both the surrounding rock and the tunnel’s lining are directly related to the construction procedures, the geological conditions and the locations in the super-span tunnel. According to the results, a few suggestions to improve the construction of the tunnel have been proposed.

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Results of pull tests of rock bolts and cable bolts in Sydney sandstone and shale

Cited by 54 publications

References 3 publications

Physical modeling of the rock bolt interaction with the rock massif

Physical modeling of the rock bolt interaction with the rock massif

Study of Shear Capacity of Jointed Rock Mass with Prestressed Anchor Bolt

Field Monitoring of the Deformation and Internal Forces of the Surrounding Rock and Support Structures in the Construction of a Super-Span High-Speed Railway Tunnel—A Case Study

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