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A New Correlation of Eagle Ford Shale Strength Based on the Texas Cone Penetrometer's Results

机译：基于德克萨斯锥孔计结果的Eagle Ford页岩强度的新相关性

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Load carrying capacity of bedrock is needed for the design of foundations for structures in the Dallas-Fort Worth area. The load carrying capacity of bedrock can be estimated by testing rock core samples and by pressuremeter testing. These methods are time consuming and/or rather expensive to implement. An alternative method is to estimate the loading carrying capacity of bedrock in the field using Texas Cone Penetration's (TCP) measurements (number of blows per 12 inch cone travel distance or cone travel distance per 100 blows) and charts developed by Texas Department of Transportation (TxDOT). Moon et al. (2004) have developed empirical equations to mathematically predict the compressive strength of shale in Dallas area. However, the rock quality designation (RQD) and rock percentage recovery, which measure the degree of jointing or fracture in a rock mass, have not been included in the published correlations. This study presents a new approach to incorporate RQD and rock percentage recovery as another contributing factor in new empirical correlations along with the TCP's measurements to better estimate the unconfined compression strength of Eagle Ford shale in particular. This new strength correlation that was developed has a better statistical fitness compared to other previously developed correlations by other researchers.
机译：达拉斯-沃思堡地区的结构基础设计需要基岩的承载能力。基岩的承载能力可以通过测试岩心样本和压力计测试来估算。这些方法耗时和/或实施起来相当昂贵。另一种方法是使用德州锥孔穿透（TCP）测量（每12英寸圆锥行进距离的打击次数或每100次打击的圆锥行进距离的打击次数）和得克萨斯州运输部制定的图表来估算基岩在野外的承载能力（ TxDOT）。 Moon等。 （2004年）开发了经验公式，以数学方式预测达拉斯地区的页岩抗压强度。但是，测量岩体中节理或破裂程度的岩石质量标识（RQD）和岩石百分率回收率未包含在已发布的相关性中。这项研究提出了一种新方法，将RQD和岩石百分采收率作为新的经验相关性的另一个促成因素，连同TCP的测量值一起，可以更好地评估尤其是Eagle Ford页岩的无侧限抗压强度。与其他研究人员先前开发的其他强度相关性相比，该新强度强度相关性具有更好的统计适应性。

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