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:
Aug. 19, 2025
Filed:
Jul. 13, 2023
Chongqing Jiaotong University, Chongqing, CN;
Xuefu Zhang, Chongqing, CN;
Bo Hu, Chongqing, CN;
Jian Zhang, Chongqing, CN;
Bo Chu, Chongqing, CN;
Chunlong Wang, Chongqing, CN;
Peiheng Guo, Chongqing, CN;
Qiusheng Deng, Chongqing, CN;
Chongqing Jiaotong University, Chongqing, CN;
Abstract
An efficient and energy-saving blasting method based on a notched blast hole includes forming a cutting hole, an auxiliary hole, and a peripheral hole on a surface of an area to be blasted separately by means of a drilling apparatus. The cutting hole, the auxiliary hole, and the peripheral hole are formed on the surface of the blasting area separately, and notches with different numbers are formed on outer sides of the holes separately, such that in a blasting process, explosion energy of explosives can be transmitted along the notches, the explosion energy is guided, energy loss is reduced, blasting efficiency is improved, thus a range of a crushing area is reduced, a length of a main crack is increased, and a better blasting effect is achieved. Moreover, explosive energy is concentrated on the notch to initiate crack, so as to reduce an explosion smash area.