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本文叙述了孔壁崩落应力测量方法。分析和讨论了冀中平原地区的10口深孔地层倾角和四臂测井资料,得出该地区的孔壁崩落的方向是V12°W。由此确定的最大水平主应力方向为N78°E。此外,还与其它几种应力测量方法所取得的结果进行比较,表明具有良好的一致性关系。最后根据在冀中平原地区所取得的应力方向的结果,说明该地区应力方向是受着同一构适应力场的作用,其动力源是来自太平洋板块向西俯冲的结果。
This article describes the hole wall caving stress measurement method. After analyzing and discussing the data of 10 deep-hole dip and 4-arm logging data in the Jizhong Plain, it is concluded that the direction of the hole wall caving in this area is V12 ° W. The direction of the maximum horizontal principal stress thus determined is N78 ° E. In addition, compared with the results obtained by several other stress measurement methods, it shows that there is a good consistency. Finally, based on the results of the stress directions obtained in the Jizhong Plain, it is shown that the stress direction in this area is affected by the same structural stress field and the power source is derived from the western subduction of the Pacific plate.