Study on Blasting Stress Field of Air Cushion Charge
The pressure of wall of hole and blasting field of air cushion charge were solved through theoretical analysis and numerical simulation by Ansys/Ls-dyna. The calculation method of critical decouple coefficient which was related with two steps expanse theory of blast air was extracted firstly. The result indicated that the decouple coefficient was one leading factor of blasting field in rock mass. The peak value of stress reduced promptly while the decouple coefficient increased; the peak value of stress in charge section was larger than that of cushion section, but far zone is similar; compression stress was occurred in rock firstly and changed tensile stress later whatever the radial or tangential direction.
air cushion pressure of wall of hole numerical simulation critical decouple coefficient lasting field
XU Ying LUO Qiang
Department of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China
国际会议
西安
英文
772-776
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）