膨胀土大面积场坪路堤填筑包芯法施工方法

Method of embankment filling construction of core expansion

为了能对膨胀土进行直接利用,保证膨胀土大面积场坪路基填筑施工质量,本文结合现场实际,针对膨胀土的特性,对膨胀土大面积场坪路堤填筑包芯法施工方法进行研究。结果表明:该技术解决了膨胀土直接利用所存在的质量缺陷,弥补了膨胀土化学改良的不足,可确保膨胀土填料的强度和稳定,路基的安全质量满足要求。

The core expansion soil large area of the floor subgrade filling construction,in the subgrade slope and top surface is not less than the atmospheric severe impact range of a certain area,the use of lime or cement improved soil closed waterproof,improve the subgrade slope anti-erosion ability,effectively avoid slope collapse and other diseases.After the water separation treatment,the expansion soil inside the embankment is separated from the external environment,which prevents the influence of the water in the atmosphere on the expansion soil filler,keeps the water content basically stable,ensures the strength and stability of the expansion soil filler,and meets the safety and quality requirements of the subgrade.