采矿与安全工程学报2011，Vol.28Issue(3)：488-492,5.
煤体爆破损伤规律模拟试验研究
Experimental Study on the Blast Damage Law of the Simulated Coal
摘要
Abstract
In order to further study the coal blasting mechanism and improve the gas drainage effect in coal mine, we analyzed the process of coal blasting damage and fracture and divided it into the initial stage of blast waves and the later stage of the detonation gas and coal mine gas, then we selected the damage and fracture criterion. Based on the similarity theory , we designed coal blast experiment and measured ultrasonic wave velocity and blast strain waves. The results show that the coal blast damage is the result of the interaction of blast shock wave, blast stress wave, and detonation gas and coal mine gas. The coal mine gas has a positive role in the coal blast damage. Near the blasting area, the blast wave is the main reason of blast damage, which makes the blast damage decrease rapidly. However, in the area at a moderate or long distance from the blast point, the main reason of blast damage is detonation gas and coal mine gas, the blast damage decreases slowly, and the damage can last a long time at a high level, The damage range and degree of the blast are greater than general rock.关键词
煤体/爆破损伤/爆炸应力波/模拟试验研究Key words
coal/ blast damage/ blast stress wave/ simulation experimental study分类
矿业与冶金引用本文复制引用
褚怀保,杨小林,梁为民,余永强,王立平..煤体爆破损伤规律模拟试验研究[J].采矿与安全工程学报,2011,28(3):488-492,5.基金项目
国家自然科学基金项目(50874039,40638040) （50874039,40638040）
河南省科技攻关项目(0624210002) （0624210002）
河南省煤矿瓦斯与火灾防治重点实验室开放基金项目(HKLGF200705) （HKLGF200705）
河南理工大学杰出青年基金项目 （）
