复杂地应力条件下聚能装药侵彻深部砂岩穿透深度研究

doi:10.13722/j.cnki.jrme.2017.1281

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摘要针对深部砂岩承受着复杂高地应力的特点，探讨复杂地应力对聚能装药侵彻砂岩穿深的影响机制，提出复杂地应力条件下的穿深预测公式。基于砂岩的本构模型以及ALE算法，利用数值计算方法对聚能装药侵彻砂岩的穿深进行研究，探讨复杂地应力对射孔过程中孔洞形状以及砂岩材料能量的影响，进而对理论计算、数值分析及实验结果进行对比分析。研究结果表明，地应力对聚能装药侵彻砂岩穿透深度有显著的影响，垂直于射孔方向的地应力对穿透深度的影响显著大于平行于射孔方向的地应力。垂直于射孔方向的地应力越大，穿透深度越小，射孔孔径越大，砂岩吸收弹性应变能的能力越强。数值计算方法和理论公式可以用来模拟聚能装药侵彻砂岩过程及预测复杂地应力条件下的穿透深度。

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	任劼
	党发宁
	马宗源
	潘峰

关键词 ：岩石力学, 复杂地应力, 聚能装药, 穿透深度

Abstract：The influence of complex geostress on the penetration depth of shaped charge into sandstone was analyzed and a formula for penetration depth under complex geostress was developed. The penetration depth of shaped charge into sandstone was simulated with the numerical method based on the constitutive model of sandstone and ALE algorithm. The influences of complex geostress on the shape of the hole and the energy of the sandstone during perforating were discussed. Comparisons of the results from the analytical analysis，numerical simulation and experiments were performed. The results show that the geostress has marked influence on the penetration depth. Compared to the geostress parallel to the perforating direction，the geostress perpendicular to the perforating direction has more pronounced effect on the penetration depth. Due to the greater geostress perpendicular to the perforating direction，the penetration depth becomes shallower，and the radius of the perforating aperture is larger. At the same time，the sandstone can absorb the elastic strain energy more. The proposed analytical equation and numerical method can simulate the penetration process of shaped charge into sandstone and predict the penetration depth respectively.

Key words： rock mechanics complex geostress shaped charge penetration depth

引用本文:

任劼，党发宁，马宗源，潘峰. 复杂地应力条件下聚能装药侵彻深部砂岩穿透深度研究[J]. 岩石力学与工程学报, 2018, 37(3): 679-688.
REN Jie，DANG Faning，MA Zongyuan，PAN Feng. Penetration depth of shaped charge into deep sandstone under complex geostress. , 2018, 37(3): 679-688.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2017.1281 或 http://www.rockmech.org/CN/Y2018/V37/I3/679

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