爆炸与冲击2018，Vol.38Issue(2)：390-396,7.DOI:10.11883/bzycj-2016-0180
不耦合爆破技术在高应力区域卸压效果
Stress relieving effect of non-coupling blasting technique on high stress area
摘要
Abstract
To investigate the stress relieving mechanism and the effect of the non-coupling blasting on the high-stress area in a coal tunnel,we carried out theoretical analysis and laboratory experiment,followed by in-situ verification and numerical simulation.The results show that,in the laboratory experiment,although blasting can obviously relieve its stress in specimen,the existence of the hulking stress results in increasing the stress recovery rate after the blasting.Therefore a stress relieving method was proposed which combines blasting and pre-splitting drilling with discharging pulverized coal;the verification of the stress-relieving effect on the roadway sides in the high-stress area shows that the method can effectively reduce the high-stress concentration near the roadway.关键词
卸压爆破/应力集中/水介质/不耦合爆破Key words
stress-relieving blasting/stress concentration/aqueous medium/non-coupling blasting分类
数理科学引用本文复制引用
刘志刚,曹安业,朱广安,王常彬,井广成..不耦合爆破技术在高应力区域卸压效果[J].爆炸与冲击,2018,38(2):390-396,7.基金项目
国家自然科学基金项目(51674253,51734009) （51674253,51734009）
国家重点研发计划项目(2016YFC0801406) （2016YFC0801406）
江苏省基础研究计划项目(BK20171191) （BK20171191）
