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Digitalization of mechanical and physical properties of Singapore Bukit Timah granite rocks based on borehole data from four sites

机译：基于四个地点的钻孔数据，新加坡Bukit Timah花岗岩岩石的机械和物理性质的数字化

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摘要

The Bukit Timah Granite (BTG) formation is widely distributed in the central and northern parts of Singapore Island. The BTG rocks in the formation vary from granite to granodiorite. Several hybrid rocks and dykes are also present in the BTG. The granite is in various states of fracturing and weathering, ranging from residual soils to intact, unweathered fresh rock. This paper presents some mechanical and physical properties of Singapore BTG rocks, based on data from the Factual Geotechnical Reports of more than 200 boreholes from Downtown Line stage II (DTL2) sites of Cashew, Hillview, Bukit Panjang and Beauty World. The variations of the parameters, including the unconfined compressive strength (UCS), the point-load strength index (Is50), the Cerchar abrasivity index (CAI), and the slake-durability index are derived from laboratory tests on samples from borelogs of different depths. The empirical correlations between the UCS andIs50and between the CAI and the strength parameters (UCS andIs50) are derived and validated against the commonly adopted equations. Statistical information, including the average values, the standard deviations, and the coefficients of variation, are provided for these parameters. These statistics provide a useful reference for numerical simulations and future projects involving BTG rocks.
机译：Bukit Timah花岗岩（BTG）形成广泛分布在新加坡岛的中央和北部。在地层中的BTG岩石从花岗岩到Granodiorite之间变化。在BTG中也存在几种混合岩石和堤坝。花岗岩处于各种压裂和耐候状态，从残留的土壤中完整，不变，淡淡的新鲜岩石。本文介绍了新加坡BTG岩石的机械和物理性质，基于来自市中心线阶段II（DTL2）地点的200多个钻孔的事实地岩石报告的数据，Hillview，Bukit Panjang和Beauty World。参数的变化，包括非束缚的压缩强度（UCS），点负荷强度指数（IS50），CERCHAR磨料指数（CAI）和缝隙耐久性指数来自不同的样品的实验室测试深度。衍生和验证CAI和强度参数之间的UCS和强度参数（UCS和SIS50）之间的UCS和SIS50和强度参数之间的经验相关性。为这些参数提供统计信息，包括平均值，标准偏差和变异系数。这些统计数据为涉及BTG岩石的数值模拟和未来项目提供了有用的参考。

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