The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 2017
Filed:
Sep. 29, 2011
Chan Woo Lee, Seoul, KR;
Chan Woo Lee, Seoul, KR;
Other;
Abstract
The present invention relates to a method and related devices for carrying out TBM excavation and expansion blasting, which uses a blast protector and a cart to expand a pilot tunnel by blasting after the pilot tunnel has been formed; and which specifically includes: a step of forming a pilot tunnel; a step of forming a horizontal or vertical blast hole; a step of installing a blast protector within the pilot tunnel; a step of blasting the upper and lower halves of the pilot tunnel to expand the upper and lower halves; and a step of removing the debris formed during the blasting of the upper and lower halves, by dumping the debris into a cart. Accordingly, the rail and cable are protected from the debris formed during the blasting, and working efficiency is improved.