爆炸与冲击
爆炸與遲擊
폭작여충격
EXPLOSION AND SHOCK WAVES
2009年
5期
529-534
,共6页
爆炸力学%压力减敏%冲击波%乳化炸药%密度调整剂%乳胶基质%破乳
爆炸力學%壓力減敏%遲擊波%乳化炸藥%密度調整劑%乳膠基質%破乳
폭작역학%압력감민%충격파%유화작약%밀도조정제%유효기질%파유
mechanics of explosion%pressure desensitization%shock wave%emulsion explosives%density regulator%emulsion matrix%emulsion breakage
在相同的乳胶基质内分别添加2%、3%、4%、5%的空心玻璃微球,2%、3%、4%、5%的膨胀珍珠岩和0.10%、0.15%、0.20%、0.25%的化学发泡剂制备了3组乳化炸药.测试了各组乳化炸药未受压时和受冲击波动态压缩作用之后的水下爆炸冲击波,以波峰值计算他们的压力减敏度.比较了各组乳化炸药的压力减敏度大小,分析了密度对乳化炸药压力减敏的影响.结果表明:密度较大的乳化炸药压力减敏度较小,膨胀珍珠岩或化学发泡剂的添加量越大,乳化炸药越容易产生压力减敏作用;空心玻璃微球的添加量由2%增加到4%,乳化炸药的压力减敏度增加,但当空心玻璃微球的添加量由4%增加到5%后,乳化炸药的压力减敏度反而减小.密度对乳化炸药压力减敏影响的主要原因在于密度调整剂周围的乳胶基质破乳.
在相同的乳膠基質內分彆添加2%、3%、4%、5%的空心玻璃微毬,2%、3%、4%、5%的膨脹珍珠巖和0.10%、0.15%、0.20%、0.25%的化學髮泡劑製備瞭3組乳化炸藥.測試瞭各組乳化炸藥未受壓時和受遲擊波動態壓縮作用之後的水下爆炸遲擊波,以波峰值計算他們的壓力減敏度.比較瞭各組乳化炸藥的壓力減敏度大小,分析瞭密度對乳化炸藥壓力減敏的影響.結果錶明:密度較大的乳化炸藥壓力減敏度較小,膨脹珍珠巖或化學髮泡劑的添加量越大,乳化炸藥越容易產生壓力減敏作用;空心玻璃微毬的添加量由2%增加到4%,乳化炸藥的壓力減敏度增加,但噹空心玻璃微毬的添加量由4%增加到5%後,乳化炸藥的壓力減敏度反而減小.密度對乳化炸藥壓力減敏影響的主要原因在于密度調整劑週圍的乳膠基質破乳.
재상동적유효기질내분별첨가2%、3%、4%、5%적공심파리미구,2%、3%、4%、5%적팽창진주암화0.10%、0.15%、0.20%、0.25%적화학발포제제비료3조유화작약.측시료각조유화작약미수압시화수충격파동태압축작용지후적수하폭작충격파,이파봉치계산타문적압력감민도.비교료각조유화작약적압력감민도대소,분석료밀도대유화작약압력감민적영향.결과표명:밀도교대적유화작약압력감민도교소,팽창진주암혹화학발포제적첨가량월대,유화작약월용역산생압력감민작용;공심파리미구적첨가량유2%증가도4%,유화작약적압력감민도증가,단당공심파리미구적첨가량유4%증가도5%후,유화작약적압력감민도반이감소.밀도대유화작약압력감민영향적주요원인재우밀도조정제주위적유효기질파유.
Three groups of emulsion explosives were made of the same emulsion matrix mixed with 2%, 3%, 4% and 5% by the mass of hollow glass microspheres respectively in group 1, and with 2%, 3%, 4% and 5% by the mass of expanded perlite respectively in group two, and with 0.10%, 0.15%, 0.20% and 0.25% by the mass of chemical foaming agent in group 3. The explosion shock waves of all the emulsion explosives in every group were tested in water in two cases that when they were not pressed and after they were compressed by shock waves which were produced by the host charge underwater, and their pressure desensitization degrees were calculated with the peak pressure values of tested shock waves. The pressure desensitization degrees of the emulsion explosives in every group were compared and the influence of their density on the pressure desensitization was analyzed. An emulsion explosive with higher density has a lower pressure desensitization degree.The higher the mass content of expanded perlite or chemical foaming agent mixed with emulsion matrix, the more easily the pressure desensitization of the emulsion explosive occurs.When the mass content of hollow glass microspheres mixed with emulsion matrix increases from 2% to 4%, the pressure desensitization degree of the emulsion explosive increases.But the mass content of hollow glass microspheres mixed with emulsion matrix increases from 4% to 5%, the pressure desensitization degree of the emulsion explosive decreases.Emulsion explosive density influencing its pressure desensitization is mainly due to the emulsion breakage around the density regulator particulates.
