Thermal Conductivity of Cores of the KTB Pilot Hole VB1 (transformed data)

The thermal conductivity on cores is measured in two steps (see Pribnow 1994). First, one face end of the core is sawed and polished. The half space line source is pressed against this preparated face (without further contact medium like water) by a computerized device. The position of the heat source is varied in 15 degree intervals around one semicircle. At each position, 3 repeating measurements are performed. The line source azimuth of the lowest measured thermal conductivity is the strike of the foliation plane. On the other hand, the thermal conductivity is maximal parallel to that direction. This apparent paradox can be explained by the experimental method, because the measurement plane is perpendicular to the orientation of the line source (Pribnow 1994).In a second step a calotte plane perpendicular to the strike of foliation is prepared. A second series of thermal conductivity measurements in 15 degree intervals ...

岩芯的导热系数（thermal conductivity）采用两步法进行测量（引自Pribnow 1994）。首先，将岩芯的一个端面锯切并抛光。通过计算机控制装置将半无限空间线热源（half space line source）贴合至该制备完成的端面，无需添加水等额外接触介质。热源位置沿单个半圆以15度为间隔进行调整，每个位置下均开展3次重复测量。测得导热系数最低时的线源方位角，即为面理（foliation）平面的走向；而导热系数的最大值则与该方向平行。这一表观悖论可通过实验方法得到解释：由于测量平面与线源的取向相互垂直（Pribnow 1994）。第二步将制备出垂直于面理走向的帽状平面（calotte plane），随后开展第二组导热系数测量，测量间隔为15度……