昆明新机场土夹石挖填方施工方法及成本分析

Construction Method and Cost Analysis of Rock Fill in Kunming New Airport

总结了昆明新机场喀斯特、高烈度地区复杂地质条件下,土夹石挖填方的综合处理技术方案、施工成本分析。土夹石挖填方施工困难主要体现在爆破施工难、挖装过程机械降效严重、填筑压实方法等方面,针对问题提出了土夹石施工一整套完整的施工方法及施工的成本分析计算,确保了昆明新机场高填方地基稳定性、场地正常使用下的承载力和变形控制(沉降与差异沉降)要求。

The paper summarizes the comprehensive treatment scheme and construction cost analysis of rock fill in complex geological conditions in Karst and high-intensity areas in Kunming new airport. The difficulties in the construction of rock fill are mainly reflected in the difficulties in blasting construction,the serious mechanical failure during excavation and installation,the compaction method of filling,the question of the rock fill construction,a set of complete construction method and construction cost analysis and calculation are proposed to ensure that the Kunming New Airport high fill foundation stability,the area under the normal use of bearing capacity and deformation control( settlement and differential settlement)requirements.