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首页> 外文期刊>Bollettino di Geofisica Teorica ed Applicata >Determination of the relative soil compactness in the foundation condition by microgravity data
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Determination of the relative soil compactness in the foundation condition by microgravity data

机译：用微重力数据确定地基条件下的相对土壤密实度

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摘要

Low-density zones with high void ratio can be detected in the foundation condition by microgravity data. After collecting the data and using standard corrections methods, Bouguer anomalies are computed. Residual anomalies are obtained by removing the trend or regional anomalies from Bouguer anomalies. Negative anomalies are quite distinguishable in residual anomalies map. One of the most important causes of lowdensity zones is the decrease of soil compactness due to the high void ratio. These detected low-density or low-compacted zones should be grouted before any kind of construction. These zones are associated with lows in microgravity data and relative negative anomalies consequently. These detected negative anomalies seem to be inter connected in some way. This connection advocates the hypothesis of a common source for these anomalies. The detected low-compacted zones are examined and confirmed by a few number of test pits. One of the pits encountered an underground man-made water supply. Some other test pits encountered loose or low-compacted zones that were filled with water after a few hour of drilling, originated from the detected man made water supply.
机译：通过微重力数据可以在基础条件下检测出具有高空隙率的低密度区域。收集数据并使用标准校正方法后，将计算布格异常。残余异常是通过从布格异常中消除趋势或区域异常而获得的。在残留异常图中，负异常非常明显。低密度区的最重要原因之一是由于高空隙率导致土壤致密性下降。这些检测到的低密度或低密度区域应在进行任何形式的施工之前进行灌浆。这些区域与微重力数据的低点和相对负异常有关。这些检测到的负异常似乎以某种方式相互关联。这种联系提出了这些异常的共同来源的假设。对检测到的低密度区域进行检查，并通过几个测试坑进行确认。其中一个矿井遇到了地下人为供水。其他一些测试坑在钻了几个小时后遇到了松散或压实的区域，这些区域充满水，这是由检测到的人为供水引起的。

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