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水壓致裂法測量地應力的誤差分析

發(fā)布時間:2018-03-21 12:39

  本文選題:水壓致裂法 切入點:垂直方向地應力 出處:《內(nèi)蒙古科技大學》2015年碩士論文 論文類型:學位論文


【摘要】:隨著科技的不斷進步,綜合技術的不斷發(fā)展,人們越來越意識到在工程中,測量地應力的好處。地應力的測量對于工程中的安全和資源節(jié)省有著重要作用,現(xiàn)在已經(jīng)成為我國礦山研究的重大課題。另外,測量地應力在研究自然災害的領域也有著不可忽略的地位,例如地震、山體滑坡、大規(guī)模群發(fā)性滑坡泥石流等地質(zhì)災害等的發(fā)生都與地應力相關。我們可以通過檢測地應力的大小,進而去對容易發(fā)生地質(zhì)災害的地區(qū)進行災害準備,有時,甚至可以進行災害預測。所以有著重要的意義。 本文主要的內(nèi)容是針對水壓致裂法對于在工程中應用時出現(xiàn)的一些問題進行研究,主要包括傳統(tǒng)水壓致裂法在含有有原生裂隙的測試段進行測量的方法研究,對于測量過程中對于如何選擇可靠的參數(shù)進行了詳細的解釋,在三維水壓致裂法的應用中,也提出了減小誤差的辦法,對于垂直方向上的應力問題,通過統(tǒng)計也給出了一個一般規(guī)律。 本文通過運用含有原生裂隙的水壓致裂法大大的提高的了測量的精度。對于三維水壓致裂法的測量誤差,本文在了解了其的原理上分析了它的可靠性,找到了它的適用情況,減小了誤差的產(chǎn)生。對于何時垂直方向的地應力可以用上覆巖的自重來表示,本也通過總結(jié),給出了大致的判別方法,對估算值的可靠性的猜測有一定的貢獻。
[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.
【學位授予單位】:內(nèi)蒙古科技大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:TD326

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