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辽河油田坨子里地区从自然地面以下8.5m为饱和软土层,其土壤允许承压力为8t/m~2,而5万吨油罐所要求的土壤承压力为22t/m~2以上.因此必须将软弱地基中的孔隙水迅速排走,即在罐体充水预压时,使土中孔隙水压力从增加再到消散,下卧层土颗粒压力的增加及其固结度的增长达到80～90%以上,以增加土壤强度,使之满足承载力的要求. 1.设置砂井设置砂井是为加速软弱地基下卧层的排水并加快土壤固结.为确保5万吨油罐(日本进口)的地基不发生问题,地基采用了砂袋井.砂袋并的直径为130mm,间距为
Tuotizili area of Liaohe oilfield is saturated soft soil layer below 8.5m from natural ground, the allowable bearing pressure of soil is 8t / m ~ 2, while the required soil bearing pressure of 50,000t oil tank is above 22t / m ~ 2. The pore water in the weak foundation must be drained away quickly, that is, when the tank is filled with water, the pressure of pore water in the soil increases and then dissipates, the increase of particle pressure in the subsoil and the increase of its consolidation degree 80-90%, in order to increase the strength of the soil, so as to meet the requirements of bearing capacity 1. Set up the sand well to set the sand well is to speed up the drainage of the subsoil of the soft foundation and speed up the consolidation of the soil. (Imported from Japan) foundation is not a problem, the foundation used sand bag wells sand bags and the diameter of 130mm, spacing