Using sectional blasting to improve the efficiency of making cut cavities in underground mine workings

• DOI: 10.3389/feart.2024.1366901
• Publication Date: 2024-04-24T04:23:21Z
• Authors: Vasyl Lozynskyi; Khalidilla Yussupov; Kanay Rysbekov; Serikbay Rustemov; Oleg Bazaluk
• Keywords: mine working; underground mine; Science; Q; borehole; cavity; strength; blasthole; 01 natural sciences; 0105 earth and related environmental sciences

Introduction: The research concerns how making cut cavities improves drilling and blasting operations as well the optimum parameters to arrange both snubber auxiliary blastholes. Methods: methods include experimental industrial activities identify depth of first-section blastholes relative second-section It also identifies while driving mine workings ore breaking in stopes with different working sections rock mass strengths broken using technique cut-cavity formation. Results Discussion: Experimental explosions executed a production environment have proved efficiency proposed sectional formation cavity, which helped increase blasthole use coefficient (BUC) from 0.88 0.97. boreholes should be determined length strength. higher strength formation, larger ratio between first lengths be. results indicate that varies 0.5 more boreholes, depending upon latter If is 12 on Protodyakonov scale, increases 1.6 m 2.6 m, then increased 0.9 1.54 so 0.55–0.56 second section length. 18, 1.8 2.82 1.75 being 0.5–0.62 Applying novel procedure for will reduce cost operations. Moreover, may practical underground within stopes.