Analytical model of shear mechanical behaviour of bolted rock joints considering influence of normal stress on bolt guide rail effect

Zheng, Luobin; Wang, Liangqing; Zhu, Linfeng

doi:10.1007/s11771-021-4700-3

Cited by 9 publications

(1 citation statement)

References 30 publications

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“…The application of these devices can increase the bonding force between anchorage agent and surrounding rock interface, so as to increase the shear capacity between anchorage agent and surrounding rock interface, and then to increase the stability of anchorage system, and reduce the occurrence of bolt failure. Kang et al, Li et al, Zhao et al, Zheng et al, Zhao et al, Xiao Ding., Lai G., Zhao et al, and Holý O . established the mechanical models between the components of the anchorage system and the surrounding rock under different conditions based on the mechanical mechanism of the anchorage system.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Resin Anchoring with Reaming Bottom and Filling in Soft Rock

et al. 2023

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This paper deals with the problem of the slippage failure of bolts in supporting soft rock, and the anchoring system being pulled out when conventional anchoring methods are used for bolts. This situation seriously threatens the safety of personnel and efficiency of work at the supporting soft rock. The main goal of this paper is to develop methods that will take full advantage of the potentially great supporting force that can be provided by bolts installed in soft rock. The study discusses the resin anchoring technique with reaming bottom and filling and proposes that replacing soft rock with high strength hard rock is an effective method to improve the anchoring force that prevents slip failure. The results of a comparative analysis of the different maximum diameters of reaming and the anchorage performance of the method using laboratory testing, numerical simulation, mechanics analysis, and field test are described. The results show that when the reaming diameter is less than five times that of the borehole, the anchorage force increases significantly. When the reaming diameter is more than five times that of the borehole, the increasing degree of anchoring force decreases obviously and the trend is gentle. The anchoring force of five times resin anchoring with reaming bottom and filling is 2.8 times that of conventional anchorage. The resin anchoring technique with reaming bottom and filling guarantees that bolts installed in soft rock will provide high supporting forces.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Resin Anchoring with Reaming Bottom and Filling in Soft Rock

et al. 2023

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Identification and Mitigation of Reservoir Landslides: Cases Studied in the Three Gorges Reservoir Area of China

Tang

2023

Progress in Landslide Research and Technology, Volume 2 Issue 1, 2023

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Reservoir landslides are one of the most common types of geohazards in reservoir areas. It is of great theoretical significance and engineering application value to carry out the identification and mitigation research of them. In the Three Gorges Reservoir area (TGRA), a series of studies were conducted on the reservoir landslides in aspects of their characteristics, evolution mechanisms, prevention and control, and forecasting by means of field investigation, monitoring and in-situ experiment, etc. Massive corpora of these research work are summarized and presented here in five aspects, with the goal of gaining insights into the effective prevention and mitigation of them: (1) the characteristics of the reservoir landslides located in the TGRA were summarized; (2) the stability evaluation methods of reservoir landslide include qualitative, limit equilibrium methods, numerical simulation methods and probabilistic methods were introduced; (3) the in-situ experiment on slipping zone soil of reservoir landslides carried out on the Huangtupo landslide was described; (4) the research progresses in reservoir landslide prevention and control was introduced; (5) the prospects of reservoir landslides forecasting based on physical-mechanical mechanism was elaborated. Based on the overview, suggests topics for future research are given to address the remaining challenges of reservoir landslides.

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Shear Test of Pre-stressed Anchor Block and Fracture Mechanism Analysis of Anchor Cable

Wang

Zhao

et al. 2022

Rock Mech Rock Eng

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Analytical model of shear mechanical behaviour of bolted rock joints considering influence of normal stress on bolt guide rail effect

Cited by 9 publications

References 30 publications

Experimental Study on Resin Anchoring with Reaming Bottom and Filling in Soft Rock

Experimental Study on Resin Anchoring with Reaming Bottom and Filling in Soft Rock

Identification and Mitigation of Reservoir Landslides: Cases Studied in the Three Gorges Reservoir Area of China

Shear Test of Pre-stressed Anchor Block and Fracture Mechanism Analysis of Anchor Cable

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