Analysis of Dynamic Mechanical Response of Coal under Impact Loading of Water Jet
Based on the description about impact of water jet on coal and rock, the calculation model of impact of water jet on coal and rock were established, and the analytic solution of stress field in coal and rock which is under the action of impactive dynamic loading, subsequently, the dynamic mechanical response of coal and rock under the impact of water jet is analyzed. The analysis indicates that in the three stages of the impact, the radial stress and the peak value of tangential stress are tensile stress at the non-cross-flow stage; at the stable flow stage the radial stress is the compressive stress and the tangential stress is tensile stress; at the unloading stage, the radial stress turns into the tensile stress and the tangential stress changes into the compressive stress. The work is helpful for the further study of the process and mechanism of coal breakage by pressure water jet.
water jet dynamic load stress field rock breakage
LIANG Yunpei SUN Dongling CHEN Jinhua CHENG Guoqiang
College of Natural Resources and Environmental Engineering, Shandong University of Science and Techn Gas Department, Chongqing Branch of China Coal Research Institute, Chongqing 400037 College of Natural Resources and Environmental Engineering, Shandong University of Science and Techn
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
269-277
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）