The construction method: To lay it in the range of measurement. To lay the composite geotechnical membrane before the first required to lay a good sand cushion on the roadbed, laying the width of the design requirements set. When laying, do not allow the laying of folds, as far as possible to tighten. After the pavement, the U type nails or bamboo nails is used to fix. When laying composite geotechnical membrane, the surface of the sand layer is smooth, no hard protrusion, and timely fill sand cover, avoid direct exposure to the sun for a long time. When the composite earthwork film is laid, the length of the transverse lap and the longitudinal lap can meet the design requirements. After the composite geotechnical membrane is rolled out, the filling material is filled up in time, and after the soil is covered with light compaction mechanical compaction, only when the thickness of the overburden layer is larger than 0.6m, the soil can be compacted by heavy compaction machine. Composite geotechnical membrane according to the design requirements can be divided into two types of longitudinal force and lateral force, the laying of composite soil before the film to understand the design intent, strictly according to the design requirements of the laying.
