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http://dx.doi.org/10.14481/jkges.2016.17.11.15

The Evaluation on Applicability of Leakage-prevented Sealing Packer Out of Grouted Rockbolt Hole  

Yang, Taeseon (Department of Civil Engineering, Kimpo University)
Kim, Jichang (Department of Zinoogni Co., Ltd.)
Jeong, Jongki (Korea Institutute of Geotechnical Technology)
Yoo, Dongho (Department of Zinoogni Co., Ltd.)
Choi, HakYun (Department of Information & Communication Technology, Kimpo University)
Baek, Seungcheol (Department of Civil Engineering, Andong University)
Publication Information
Journal of the Korean GEO-environmental Society / v.17, no.11, 2016 , pp. 15-21 More about this Journal
Abstract
Nowadays, some studies have been performed for rockbolt method widely used in Korea. To make large slopes, tunnels or rock structures stable, supporting systems, such as anchor bolt, rock bolt which are developed recently, are commonly used. In this study, laboratory pullout tests were carried out to compare the characteristics of rock bolt that is most widely used with ones of rock bolt by newly developed circular model testers. Re-pullout test for the rock bolt in which loading and unloading cycles are repeated several times showed that the maximum pullout load is almost constant irrespective of the number of loading cycles, which may be due to no failure between rock bolt and filler that is filled with soils and concrete as a substitute. A development of rock bolt fillers as supporters using to protect people in tunnels and slopes is reviewed as a probable man-made hazard after excavation works. The functions of the grouted rock bolts associated with reinforcement effects also should be assessed in this study, which develop the sealing apparatus preventing from overflowing mortar out of a rock bolt hole for securing safety in the tunnel and slopes in order to secure stability named the sealing packer.
Keywords
Pullout test; Rockbolt; Filler;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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