煤矿安全2019，Vol.50Issue(1)：13-16,4.DOI:10.13347/j.cnki.mkaq.2019.01.004
煤体高压气体爆破致裂规律的实验研究
Experimental Study on Cracking Laws of High Pressure Gas Explosion in Coal
曾范永1
作者信息
- 1. 江苏建筑职业技术学院 建筑与建造学院,江苏 徐州 221116;中国矿业大学 深部岩土力学与地下工程国家重点实验室,江苏 徐州 221008
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摘要
Abstract
In order to clarify the influence laws of high pressure gas blasting on the permeability of coal body, the experimental device of high pressure gas blasting in coal body was developed and the relevant experiment was carried out. The results show that the permeability of coal is more obvious when the hardness coefficient is between 0.5 and 1.5; the depth of blasting hole is about 1/3 of coal body, and the effect of high pressure gas blasting coal is better. With the increase of detonation pressure, the permeability of coal increases and basically changes linearly; as the confining pressure of coal increases, the increase of permeability of coal after high pressure gas blasting decreases correspondingly and presents a linear change; however, the pore pressure has little effect on the permeability improvement of high pressure gas blasting.关键词
煤体渗透性/实际煤体/高压气体爆破/围压/孔隙压力/瓦斯抽采Key words
coal permeability/actual coal/high pressure gas blasting/confining pressure/pore pressure/gas drainage分类
矿业与冶金引用本文复制引用
曾范永..煤体高压气体爆破致裂规律的实验研究[J].煤矿安全,2019,50(1):13-16,4.
