冻土爆破性的灰色关联分析GREY SYSTEM CORRELATION ANALYSIS OF FROZENSOIL BLASTABILITY
马芹永
Ma Qinyong(Huainan Institute of Mining,Anhui 232001)
摘要(Abstract):
用灰色关联分析法分析了冻土爆破性影响因素之间的密切关系,评价了几种冻土的爆破性。变形能系数与抗拉强度关系密切,其次为纵波速度和爆破漏斗体积。试验测出冻结砂土、冻结粘土在-7℃、-12℃、-17℃温度条件下爆破性的影响因素,综合评价表明-17℃的冻结粘土最难爆破。
In this paper, the factors influencing frozensoil blastability and frozensoil blastability are analysed with the grey correlation method. Tensile strength is closely correlated to strain energy factor, secondarily the factors, such as velocity of longitudinal wave, volume of blasting crdter. The factors effecting blastability of frozen sand and clay under the temperature of -7℃,-12℃and-17℃are obtained from the tests.The results have shown that the frozen clay under the temperature of -17℃is the more difficult to be blasted.
关键词(KeyWords):
灰色关联分析,冻土爆破,关联度
Grey system correlation analysis; Blasting of frozensoil; Correlation degree
基金项目(Foundation):
作者(Author):
马芹永
Ma Qinyong(Huainan Institute of Mining,Anhui 232001)