采矿与安全工程学报2012，Vol.29Issue(6)：894-898,5.
含瓦斯煤体爆破裂纹扩展规律试验研究
Experimental Study on Regularity of Blasting Crack Spread in a Coal Contained Gas
摘要
Abstract
In order to study the blasting mechanism of coal contained gas further, we have analyzed the mechanism of blasting crack formation and propagation theoretically, and designed the blasting crack propagation experiment. The blasting crack propagation velocity and the blasting strain waves have been measured. The theoretical and experimental results show that the blasting crack propagation has three stages. One is rapid decay stage under blasting stress wave, the other one is slow decay stage and the last one is approximate uniform propagation stage under detonation gas and coal mine gas. The coal mine gas plays a positive role in the blasting crack propagation, and it can increase the crack propagation velocity in a small range in the later stage.关键词
含瓦斯煤体/爆破裂纹/扩展规律/试验研究Key words
coal contained gas/ blasting crack/ propagation laws/ experimental study分类
矿业与冶金引用本文复制引用
褚怀保,侯爱军,杨小林,余永强,梁为民..含瓦斯煤体爆破裂纹扩展规律试验研究[J].采矿与安全工程学报,2012,29(6):894-898,5.基金项目
国家自然科学基金项目(50874039) （50874039）
河南省教育厅自然科学基金项目(0624210002) （0624210002）
河南理工大学杰出青年基金项目 （）
