Title:
HIGH-ENERGY PRESSURE FIT TYPE OF ROCK BOLT
Document Type and Number:
WIPO Patent Application WO/2013/105725
Kind Code:
A1
Abstract:
Disclosed is a high-energy pressure fit type of rock bolt. The high-energy pressure fit type of rock bolt which is disclosed comprises: a bent pipe on the inside of which is formed a fitting space, and which bends inwardly at equal intervals; a protective cap which is connected to one end of the bent pipe; a solid expansion unit which is installed in the fitting space and is provided with a dynamically swelling solid powder; a rock bolt coupling which is connected to the other end of the bent pipe; and a trigger which passes through the rock bolt coupling so as to connect to the solid powder. Upon detonation by means of the trigger, the solid powder reacts instantaneously such that the bent pipe is restored into a circular pipe and at the same time the diameter of the bent pipe is expanded.
Inventors:
JEONG YUN YOUNG (KR)
CHO SANG HO (KR)
CHO SANG HO (KR)
Application Number:
PCT/KR2012/009562
Publication Date:
July 18, 2013
Filing Date:
November 13, 2012
Export Citation:
Assignee:
ENGINEERING CO LTD SOC (KR)
NAT UNIV CHONBUK IND COOP FOUND (KR)
NAT UNIV CHONBUK IND COOP FOUND (KR)
International Classes:
E21D21/00; E21D20/00
Foreign References:
| US4601614A | 1986-07-22 | |||
| US20080110640A1 | 2008-05-15 | |||
| KR101029320B1 | 2011-04-13 | |||
| KR100972357B1 | 2010-07-26 |
Attorney, Agent or Firm:
JUNG, CHANG SU (KR)
정창수 (KR)
정창수 (KR)
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Claims: