摘要
用现场试验、数值模拟、相似模拟综合方法研究巷帮松裂爆破卸压维护软岩巷道的原理、卸压效果和技术参数。巷帮松裂爆破后的巷道，围岩变形要经过短暂剧烈变形期和长久缓慢变形期２个阶段。软化卸压带的软化系数与炮眼间距及排距呈双曲线关系。爆破卸压方法对维护煤矿软岩巷道具有广阔的应用前景。
The principles, destress results and technical parameters for destress blasting in the side wall of roadway are studied in the field test, numeric simulation and simulation test with equivalent materials. After blasting, the surrounding rocks will experience two stages of deformation,i.e.vigorous deformation in a short period and gentle deformation in a long period. The relation between the softening factor of the destressed zone and borehole spacing and row spacing is a hyperbolic curve. Destressing blasting has a broad prospect in roadway maintenance in soft rock.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1995年第3期311-316,共6页
Journal of China Coal Society
基金
煤炭工业部科研项目
关键词
巷帮松裂爆破
卸压维护
软岩巷道
destress blasting of sidewall of roadway
softened destressed zone
technical parameters
experimental research
