Many mining engineering subjects are established on geologic condition of alluvium.
因此开展冲积地层的开挖与支护设计及工程决策研究，对于推进该领域的理论和技术，探索一般工程决策的普遍规律和研究方法，掌握工程决策的内容、步骤和行为，指导矿业工程学科领域内的工程建设，具有较高的工程价值和应用前景。
In this paper, according to the characteristics of the typical subsoil in the alluvium area of Yellow River, the traditional Deep mixing method was studied, and the improved technique of Two-jetting & four mixing method was successfully applied to the engineering practice.
结合工程实例 ,针对黄河冲积地区典型地层 ,经过研究探讨 ,将传统的深层搅拌桩施工工艺改进为“二喷四搅”工艺流程 ,在实际的工程施工中取得了良好的效果 ,对该地区深层搅拌桩的施工具有重要的指导作
