Research On Construction Techniques And The Method For Quality Control Of Rockfill Embankment

In order to reduce the project cost and use local materials,the stone embankment with large diameter filling materials has become a common type of highway construction in mountainous areas.Paper analyzes the stability of rockfill subgrade under traffic load and deformation law of the effect factors of rock fill roadbed compaction effect and its regularity are studied,put forward the rockfill embankment slope protection technology requirements code build by laying bricks or stones,gravel packing selection principle,grading and maximum thickness of the control range of particle size,loose laying method and parameter selection,combination,compaction machinery is given using the differential settlement and construction parameters for the operation of the compaction quality control method,analyzed the rockfill embankment the applicable scope of all kinds of compaction quality detection method.The results show that the construction quality of rockfill roadbed can be effectively improved by selecting strong and hard stone materials,controlling the inhomogeneity coefficient,maximum particle size and thickness of rockfill,adopting progressive paving method,optimizing construction compaction combination and compaction parameters,strengthening foundation treatment,drainage and slope protection.Adopting compaction settlement difference and construction parameter "double control index" can save the quantity of quality inspection and improve the construction progress of rockfill subgrade.Through the test of the construction practice of a rockfill roadbed in a mountainous area of xinjiang,good application results have been obtained.