水压致裂法测量地应力的误差分析

发布时间：2018-03-21 12:39

本文选题：水压致裂法　切入点：垂直方向地应力　出处：《内蒙古科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着科技的不断进步，综合技术的不断发展，人们越来越意识到在工程中，测量地应力的好处。地应力的测量对于工程中的安全和资源节省有着重要作用，现在已经成为我国矿山研究的重大课题。另外，测量地应力在研究自然灾害的领域也有着不可忽略的地位，例如地震、山体滑坡、大规模群发性滑坡泥石流等地质灾害等的发生都与地应力相关。我们可以通过检测地应力的大小，进而去对容易发生地质灾害的地区进行灾害准备，有时，甚至可以进行灾害预测。所以有着重要的意义。本文主要的内容是针对水压致裂法对于在工程中应用时出现的一些问题进行研究，主要包括传统水压致裂法在含有有原生裂隙的测试段进行测量的方法研究，对于测量过程中对于如何选择可靠的参数进行了详细的解释，在三维水压致裂法的应用中，也提出了减小误差的办法，对于垂直方向上的应力问题，通过统计也给出了一个一般规律。本文通过运用含有原生裂隙的水压致裂法大大的提高的了测量的精度。对于三维水压致裂法的测量误差，本文在了解了其的原理上分析了它的可靠性，找到了它的适用情况，减小了误差的产生。对于何时垂直方向的地应力可以用上覆岩的自重来表示，本也通过总结，给出了大致的判别方法，对估算值的可靠性的猜测有一定的贡献。
[Abstract]:With the continuous progress of science and technology and the continuous development of comprehensive technology, people are becoming more and more aware of the benefits of measuring in-situ stress in engineering. The measurement of in-situ stress plays an important role in safety and resource saving in engineering. At present, it has become an important subject of mine research in China. In addition, geostress measurement plays an important role in the study of natural disasters, such as earthquakes and landslides. The occurrence of large-scale mass landslides, mudslides, and other geological disasters is related to ground stress. We can make disaster preparations for areas prone to geological disasters by detecting the magnitude of in-situ stress. Even can carry on the disaster forecast. Therefore has the important significance. The main content of this paper is to study some problems in the application of hydraulic fracturing method in engineering, including the traditional hydraulic fracturing method to measure the test section with primary fracture. A detailed explanation of how to select reliable parameters in the measurement process is given. In the application of the three-dimensional hydraulic fracturing method, a method to reduce the error is also put forward, and the vertical stress problem is also discussed. A general rule is also given through statistics. In this paper, the accuracy of measurement is greatly improved by using hydraulic fracturing method with primary fractures. For the measurement error of 3D hydraulic fracturing method, the reliability of the method is analyzed in the understanding of its principle, and its application is found. For when the vertical stress can be expressed by the weight of overburden, this paper also gives a rough method by summing up, which has a certain contribution to the prediction of reliability of the estimated value.
【学位授予单位】：内蒙古科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD326

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