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针对戈壁地区圆砾土、卵石土地层,采用重锤夯实、冲击碾压、重型碾压三种方法分段加固。通过对地基系数K30、孔隙率、重型动力触探进行试验,将试验结果对比并结合现场施工情况分析得出:冲击碾压和重型碾压具有施工工艺简单、施工进度快的显著特点,建议在施工中优先采用。
For the Gobi area round gravel, pebble soil layer, using ram compaction, impact rolling, heavy-duty compaction three methods of sub-reinforcement. Through the test of foundation coefficient K30, porosity and heavy-duty dynamic penetration test, the test results are compared with the field construction and analyzed. It is concluded that impact rolling and heavy rolling are notable features of simple construction process and fast construction speed. Construction is preferred.