不同敏化气泡载体敏化的乳化炸药减敏压力研究

测量了直径30 cm高压聚乙烯水袋中冲击波压力衰减规律,利用线性回归方法得到水袋中冲击波衰减曲线为p=72.237(3(√)Q/R)1.240 9MPa.采用水袋法测试3种气泡载体敏化的乳化 炸药临界减敏压力和临界压死压力.研究结果表明:玻璃微球、化学气泡、膨胀珍珠岩敏化的乳化炸药临界减敏压力分别为134.66 MPa、99.83 MPa、27.13 MPa;临界压死压力分别为332.22 MPa、218.82 MPa和45.09 MPa.气泡载体不同,乳化炸药随压力增加的平均减敏速率不同,玻璃微球敏化的乳化炸药最慢,化学气泡敏化的乳化炸药次之,膨胀珍珠岩敏化的乳化炸药最快.

Research on the Desensitization Pressure of Emulsion Explosives Sensitized by Different Sensitizing Bubble Carriers

The attenuation rule of shock wave pressure in a LDPE bag(with diameter 30cm) full of water was measured,and the shock wave pressure attenuation curve,p=72.2373QR~(1.240?9)?MPa,was presented.The critical desensitization pressure and the dead-pressing pressure of emulsion explosives were measured,and the desensitization velocities of emulsion explosives are got.The experimental results show that the critical desensitization pressures of emulsion explosives sensitized by glassy micro spheres,chemical bubbles and expanded pearlite are 134.66?MPa,99.83?MPa and 27.13?MPa,the dead-pressing pressures are 332.22?MPa,218.82?MPa and 45.09?MPa,respectively,and the average desensitization velocity of emulsion explosives sensitized by glassy micro sphere is the slowest,that sensitized by chemical bubbles is the second,that sensitized by expanded pearlite is the fastest.