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现行路基施工技术规范明确要求:路基填筑用土必须将草根拣除干净,以确保路基质量。但由于以往施工工艺水平落后,很难满足技术要求,有必要开展工艺创新,提高路基填土草根拣除效率。一般方法近年来,路基用土征地困难,尤其沧州沿海地带,土源多为常年荒芜、芦苇丛生的坑洼地,为保证路基填土洁净,取土时要求先清表(将地表30 cm清出取土场外),后取土。这样的确避免了杂草、地表腐土等混入路基填土,但由于芦苇根系发达,盘根错节,致使土中草根甚多,不得不在取土、装运、
The current subgrade construction technical specification clearly requires that the soil used for subgrade filling must be cleaned and sorted to ensure the quality of subgrade. However, due to the backward level of construction technology in the past, it is difficult to meet the technical requirements, it is necessary to carry out technological innovation and improve the efficiency of grassroots removal of roadbed filling. General Methods In recent years, land-based land acquisition difficulties, especially in Cangzhou coastal areas, soil mostly perennial barren, reed potholes, in order to ensure that the roadbed filling clean, Soil outside the site), after taking soil. This indeed avoids the weeds, surface mulch and other mixed into the roadbed filling, but due to the developed root system of reeds, packing, resulting in many soil grass roots, had to take earth, shipping,