Analysis of key technologies and development of integrated digital processing system for cast blasting design

DING Xiao-hua(丁小华)^{1, 2}, LI Ke-min(李克民)^{1, 2}, XIAO Shuang-shuang(肖双双)^{1, 2}, HU Wei-min(狐为民)³

(1. School of Mines, China University of Mining & Technology, Xuzhou 221116, China;
2. State Key Laboratory of Coal Resources and Safe Mining (CUMT), Xuzhou 221116, China;
3. Department of computer, North China Institute Science of Technology, Beijing 101601, China)

Abstract:Casting blast can greatly reduce the stripping cost and improve the production capacity of opencast coal mines. Key technologies including high bench blasting, inclined hole, millisecond blasting, pre-splitting blasting and casting blast parameters determination which have influence on the effect of casting blast have been researched with the combination of the ballistic theory and experience in mines. The integrated digital processing system of casting blast was developed in order to simplify the design process of casting blast, improve working efficiency and veracity of design result and comprehensively adopt the software programming method and the theory of casting blast. This system has achieved five functions, namely, the 3D visualization graphics management, the intelligent management of geological information, the intelligent design of casting blast, the analysis and prediction of the blasting effect and the automatic output of the design results. Long-term application in opencast coal mines has shown that research results can not only reduce the specific explosive consumption and improve the blasting effect, but also have high value of popularization and application.

Key words:opencast coal mine; cast blasting, key technology, digital processing system