Zhang Shikun, Huang Zhongwei, Shi Huaizhong, Zhou Chunchun, Wu Xiaoguang, Huang Pengpeng
State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China.
Jiangsu Tuochuang Scientific Instrument Limited Liability Company, Jiangsu 226600, China.
Rev Sci Instrum. 2018 Aug;89(8):086109. doi: 10.1063/1.5041817.
A high-pressure abrasive liquid nitrogen (L-N) jet is considered as an efficient rock-breaking technology due to its unique low-temperature characteristic. In order to experimentally investigate the impact of an abrasive L-N jet on rock breakage, a new setup, which considers the low temperature and high expansibility of L-N, is put forward in this note. The setup is composed of four units: the power system, nitrogen-gas pressurization system, particle mixing system, and impingement system. Both a pre-mixed abrasive L-N jet and a post-mixed abrasive L-N jet can be achieved by this equipment. Moreover, it can also be used to investigate the influences of injection parameters and particle parameters on rock breakage. A series of experiments have been carried out based on the setup. The results further promote the application of an abrasive L-N jet.
