《Table 2 Basic Information of Engineering Geological Boreholes in Xi’an》

《Table 2 Basic Information of Engineering Geological Boreholes in Xi’an》   提示:宽带有限、当前游客访问压缩模式
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《干扰环境下城市地下空间组合探测与全要素数据集》


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The characteristics of the borehole logging curve of the Yan’an Formation can be seen in Fig.7.The values of the average strength index of the boreholes drilled in Yan’an were obtained by calculating and analyzing the acoustic logging data of these boreholes(Fig.8).It can be identified from the isoline map that the maximum of the average strength index is 26.69MPa,corresponding to the borehole ZK04,and the minimum is 19.89 MPa,corresponding to the borehole ZK02,with a general average strength index ranging from 30–15 MPa.Therefore,the engineering geological rock masses of Yan’an belong to soft socks.