山区机场高填方土石混填强夯参数的现场试验研究

Soil-Stone Filling High Embankment Impact Compaction Parameter Field Test Study for Mountain Area Airport

针对四川省攀枝花机场高填方土石混合料填筑体工程 ,分别采用 2 0 0 0kN·m和 3 0 0 0kN·m夯击能、 3 5× 3 5m正方形布置夯点对松铺厚度为 4m、 5m、 6m土石混合填筑料进行现场单点夯试验 ,获得了不同夯击能和不同松铺厚度时单点夯沉量、夯沉体积与夯击次数的关系 ,并对夯后填筑体密实度和变形模量进行了现场测试与评价 ,在此基础上 ,最后提出了采用 2 0 0 0kN·m夯击能、松铺厚度为 4m ;3 0 0 0kN·m夯击能、松铺厚度为 5m和 6m的土石混填料强夯施工参数及控制标准 ,以指导山区机场高填方填筑体施工。

For the soil?stone filling high embankment of Pan Zhi?hua airport in Sichuan province,in situ tests were carried out on each test?point of the mixture of soil and stone with loose laying thickness 4m?5m?6m,respectively adopting 2?000kN·m and 3?000kN·m impact energy whilst the test?points were located uniformly in the area of 3 5×3 5m The relationship between different impact energy and settlement?volume?times of impact of each test?point under different loose laying thickness is presented and later the field evaluation was made on the density and modulus of deformation of the impacted embankment On this basis,the control index and impact compaction construction parameters for soil?stone filling to guide the high embankment construction for airport in mountainous areas are recommended, that is,2?000kN·m impact energy fits the loose laying thickness of 4m and 3?000kN·m fits the loose laying thickness of 5m and 6m