Cone penetration testing (CPT) in Antarctic firn: an introduction to interpretation
Cone penetration testing (CPT) in Antarctic firn: an introduction to interpretation
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DOI：
10.3189/2014jog12j214
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发表时间：
2014
影响因子：
3.4
通讯作者：
A. McCallum
中科院分区：
文献类型：
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作者：
A. McCallum
工业圆锥贯入测试(CPT)设备是一种可以在硬极积雪中进行深度为10m的贯入测试。该设备是液压驱动的，速度可控，能够以10 Mpa的阻力穿透积雪。它可以安装在许多类型的典型极地车辆上，只需连接液压和12V电力。记录的数据包括锥尖阻力和套筒摩擦，这是以前没有通过此类测试检查的参数。本文介绍了该仪器的研制和校准，并考察了影响CPT解释的因素，包括积雪密度、渗透率和锥体的大小和形状。CPT可以在极地环境中有效地使用，以潜在地提供对硬积雪到相当深度的物理参数的估计。
Abstract Commercial cone penetration testing (CPT) equipment was adapted to allow penetrative testing in hard polar firn to depths of 10 m. The apparatus is hydraulically driven, rate-controllable and able to penetrate firn with a resistance of 10 MPa. It can be mounted on many types of typical polar vehicles, requiring connection to only hydraulics and 12 V electricity. Data recorded include both cone tip resistance and sleeve friction, a parameter not previously examined through such testing. This paper describes the development and calibration of the equipment and examines factors including snow density, penetration rate and cone size and shape that are shown to affect CPT interpretation. CPT can be used efficiently in polar environments to potentially provide estimates of physical parameters in hard firn to substantial depth.