在深部“古河道”分布地区，桩基持力层层面起伏较大，大规模框架结构建筑，不可避免采用长短桩桩基方案。
The pile foundation plan of the huge frame structure in this area has to choose a diversification pile length scheme.
进而认识到，平面上桩海地区下古生界碳酸盐岩储层缝洞分布呈条带状。
In plane view, the fractures and vuggs in the Lower Paleozoic carbonate reservoirs are in zonal distribution in the study area.
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