克里金插值提升LNG储罐地基勘察信息可靠度

Enhancement of Geotechnical Survey Reliability for LNG Storage Tank Using Kriging Interpolation Method

分析传统LNG储罐地基勘察数据处理方法,认为对于地层起伏变化较大的工程厂区,利用均匀布孔勘探法获取勘探数据后再取平均值或线性插值得到的地层等高线分布信息与实际有较大偏差。在LNG储罐地基勘察数据处理中引入克里金插值法,综合考虑预估测点地层变化受周围多个已知勘察点的信息影响,更加准确地推算出估测点的地层高度,进而获得更为准确的地质勘察资料。

Based on the analysis of the traditional processing methods of geoteehnieal survey data for LNG storage tank, it is found that for project areas with large stratigraphic variation, the distribution information of stratigraphic contours which is determined by average value or linear interpolation value of survey data obtained by uniorm pore arrangement, has larger deviation from the practical values. Therefore, the Kriging interpolation method is introduced into the processing of geotechnieal survey data for LNG storage tank. The effects of peripheral multiple known survey point information on the straligraphic variation at forecasted positions are comprehensively considered, and the stratigraphic heights of forceasied positions are calculated more precisely to obtain the more precise geoteehnicalsurvey data.