高山滑雪赛道碎石土回填爆破致密施工技术

Construction of the Blasting Compaction Technique of Ski Trails in High Mountains

填方赛道因碎石土块级配极度不均,赛道坡度过大等特点,传统的机械碾压等致密方式单次处置深度有限,且施工十分不便。针对高山滑雪中心D2回填赛道开展爆破致密技术研究,通过对爆破荷载的等效分析,依托数值模拟软件FLAC3D构建数值模型,开展爆破挤密机制模拟研究,并基于数值模拟结果进行现场爆破挤密效果评价研究。结果表明爆破挤密技术能够满足高山滑雪赛道的沉降及承载力等要求。

For the filled ski trail,due to the big blocks and inhomogeneity of the gravel soil,the traditional compaction method is limited by the compaction depth, which would be affected the construction efficiency. For the D2 ski trail in alpine skiing center,the blasting compaction techniques were discussed,and after the analysis on the blasting loading,a numerical simulation model was built by FLAC3 D software,the mechanism of the blasting compaction was studied. Then,Based on the simulation results,the in-situ blasting compaction was carried out. The research result shows that the blasting compaction techniques can make the demand of settlement.