文献类型：期刊文献

英文题名：Experimental Study on Blasting Energy Distribution and Utilization Efficiency Using Water Jet Test

作者：Ding, Chenxi Yang, Renshu Lei, Zhen Chen, Cheng Zheng, Changda

第一作者：Ding, Chenxi

通信作者：Yang, RS[1];Yang, RS[2]

机构：[1]Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China;[2]State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China;[3]Guizhou Inst Technol, Inst Min Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China

通信机构：corresponding author), Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China;corresponding author), State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China.

年份：2020

卷号：13

期号：20

外文期刊名：ENERGIES

收录：;EI(收录号：20204309383933);Scopus(收录号：2-s2.0-85092922212);WOS:【SCI-EXPANDED(收录号:WOS:000586850700001)】；

基金：This research was supported by the National Natural Science Foundation of China (51934001, 51664007) and the National Key Research and Development Program of China (2016YFC0600903).

语种：英文

外文关键词：blasting stress wave; blasting gas; water jet; borehole constraint; utilization efficiency

摘要：The blasting stress wave and blasting gas generated by explosive blasting are the two main motive powers of rock fragmentation. An experimental method based on water jet test is used to study the energy distribution ratio of blasting stress wave and blasting gas; the utilization efficiency of blasting energy under different borehole constraint conditions is also analyzed. It proves that the blasting stress wave does not cause the water jet, and the blasting gas is the only power of the water column jet. The results show that the energy of the blasting gas and blasting stress wave respectively account for about 64% and 36% of the total energy generated by the explosion of lead azide. The utilization efficiency of the blasting gas energy under strong, medium, and weak constraint conditions is 100%, 80%, and 52%, respectively. The borehole constraint condition is crucial for the effective utilization of blasting energy.