State of the art review of the large deformation rock bolts

Qiru Sui; Manchao He; Pengfei He; Min Xia; Zhigang Tao

Underground Space (Jun 2022)

State of the art review of the large deformation rock bolts

Qiru Sui,
Manchao He,
Pengfei He,
Min Xia,
Zhigang Tao

Affiliations

Qiru Sui: State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Manchao He: State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Pengfei He: State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; Institute for Deep Underground Science and Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; Corresponding authors at: State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China (P. He). State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China (Z. Tao).
Min Xia: State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Zhigang Tao: State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; Corresponding authors at: State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China (P. He). State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China (Z. Tao).

Journal volume & issue: Vol. 7, no. 3
pp. 465 – 482

Abstract

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Rock bolting technique is an important reinforcement measure in the geotechnical engineering practice. New rock bolts have been continuously emerging through the development of rock supporting technology. Complex conditions, such as high crustal stress, extremely soft rock, and strong mining disturbance often occur in the deep mining, resulting in large deformation of the surrounding rock masses. Since the deformation of traditional rock bolts is generally below 200 mm, failure often occurs to the rock bolts because of insufficient deformability. To effectively control the large deformation of surrounding rock masses caused by complex conditions, it is necessary to develop large deformation rock bolts with high constant resistance, also called energy-absorbing bolts. This paper systematically reviews the development of large deformation rock bolts and the structure, energy absorption mechanism, anchorage performance, and mechanical properties of several typical large deformation rock bolts. The advantages and disadvantages of existing large deformation rock bolts are compared and the concept of constant resistance large deformation support is introduced.

Published in Underground Space

ISSN: 2096-2754 (Print); 2467-9674 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Engineering (General). Civil engineering (General): Engineering geology. Rock mechanics. Soil mechanics. Underground construction
Website: https://www.keaipublishing.com/en/journals/underground-space/

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