岳万友,李建国,柴修伟,王文科

• 1:中铁大桥局集团第五工程有限公司
• 2:武汉工程大学资源与安全工程学院

摘要(Abstract)：

随着深部开采环境逐渐复杂,为实现安全高效的工程爆破施工,针对深部开采爆破作业所面临的高地应力和穿越破碎带的问题展开分析研究。运用有限元分析软件ANSYS-LS/DYNA中的隐式-显式耦合分析程序对双向等压、双向不等压下含裂隙岩体进行数值模拟,研究高地应力区对含裂隙、弱面等岩体进行爆破开挖这一特殊工况。研究结果表明:深部含裂隙岩体爆破开采过程中,在各向等压地应力场开采环境下,随着围压增加单元的拉应力逐渐降低而单元的压应力并未得到显著提升,同时靠近裂隙右侧部分单元的压应力达到该测线压应力的峰值,并且压应力随围压增大而增大;在各向不等压地应力场环境下,当侧压系数为1.33时,炮孔与裂隙区域处该测线拉应力达到了峰值。因此,在深部开采爆破过程中应重点关注含有裂隙等破碎带处的地应力场,对爆破开挖的安全高效实施有着重大影响。

关键词(KeyWords)： 高地应力;侧压系数;裂隙岩体;爆破开挖;隐显式耦合分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学青年基金(NO.51709257)

作者(Author): 岳万友,李建国,柴修伟,王文科

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