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一、前言日本的地下水道普及率在1990年将达到46%.但是与普及率达70%—80%的欧美先进国家相比,仍处于低水平.预期今后小口径顶管施工法的需求量将会增大. 另外,随着下水道工程从大城市向中小城市转移,迫切需要适用于不同土质、尤其是复杂地层(大径砾石层、砾石层、含水砂砾层、含水砂层等)的顶管钻机. 本文介绍一种由小松制作所研制的结构新、性能好,适于复杂地层钻进的TP90S型
I. Preface The penetration rate of groundwater in Japan will reach 46% in 1990. However, it is still at a low level compared with the advanced countries in Europe and America where the penetration rate reaches 70% to 80%. It is expected that the demand for the small-bore pipe jacking method will increase in the future. Will increase. In addition, as sewer projects move from large cities to small and medium-sized cities, there is an urgent need to apply to tops of different soils, especially complex formations (large-diameter gravel, gravel, gravel, hydrated sand, etc.) Pipe Drilling Rig. This article describes a new type of TP90S model developed by Komatsu Mfg. Co., Ltd. with new structure and good performance for complex formation drilling.