一种较为理想的地壳应力测定法,就是利用从地下深部采到的样品,通过室内测定求出应力的方法。例如:利用声发射法和晶格位错等方法。用这种方法测定地壳应力时,必须在样品上注明方位。不仅地壳应力测定,而且通常利用钻探取方位明确的样品,也都要花费一定的时间,本文主要介绍用磁性磁粉的钻探岩芯定位法。 An ideal crustal stress measurement method is to use the sample taken from the deep underground to determine the stress through the indoor measurement method. For example: the use of acoustic emission and lattice dislocation and other methods. When using this method to determine the crustal stress, you must indicate the orientation on the sample. Not only the crustal stress measurement, but also usually takes advantage of the drilling to take a clear sample, it also takes a certain amount of time. This article mainly introduces the drilling method of magnetic core positioning.