Even sand is two thirds of operation cost of sand filling water cutter, and also must be rapidly produce the work pieces to consume the indirect expenses ( labor force, facilities and lease expense). 即使砂料是加砂水刀运行成本的三分之二,也必须快速生产工件以消耗间接费用(劳动力、设施、租赁费用)。
Investigation and Discussion of Construction Productivity of Reclamation of Large-diameter Gravel and Sand Soil by Suction Cutter Dredger and Its Calculation Method 关于绞吸挖泥船吹填大粒径卵石挟砂土质的施工生产率及计算方法的探讨
But traditional measuring methods such as sand cone replacement method, nuclear instrument method and circle cutter method etc. have disadvantages such as waste of time and man power, high destructiveness and interfere construction. 但是传统的路基压实度检测方法如灌砂法,核子密度仪法和环刀法等,具有费工费时,破坏性大,影响施工等缺点。