In order to give suggestion to China rotary drilling rig industry, Pile Branch of China Construction Machinery Association organized an investigation of China rotary drilling rig market. The investigation was carried ...In order to give suggestion to China rotary drilling rig industry, Pile Branch of China Construction Machinery Association organized an investigation of China rotary drilling rig market. The investigation was carried out by Beijing Institute of Construction Mechanization and Beijing Sany Heavy Construction Machinery Ltd. The analysis of this investigation is divided into ten sections: customer feature of rotary drilling rig; application scope of rotary drilling rig; rotary drilling rig manufacturers; comparison between import and domestic products; purchase channel; main weakness of Chinese rotary drilling rig; maintenance of rotary drilling rig; main difficulties in the construction usage of rotary drilling rig; expectation of customers for rotary drilling rig; suggestion to the China rotary drilling rig market.展开更多
Currently, rotary drilling machines and relative construction technology have been known gradually. They were widely applied in the big diameter drilling compresol pile construction in North China. But the application...Currently, rotary drilling machines and relative construction technology have been known gradually. They were widely applied in the big diameter drilling compresol pile construction in North China. But the application of the rotary drilling machines is limited in South China, especially the southeast area, because of the soft soil and the big scale of pile. On the other hand, impact hammers have been widely used in drilling pile construction in mollisol area. Recently, rotary drilling machines and impact hammer are working together in several projects in mollisol area to prove its feasibility. This article introduces the construction instance using rotary drilling machines together with impact hammer in the drilling compresol pile construction of Wushashan Power Plant in Datang town of Zhejiang Province. Besides, the advantages and the feasibility were listed.展开更多
文摘In order to give suggestion to China rotary drilling rig industry, Pile Branch of China Construction Machinery Association organized an investigation of China rotary drilling rig market. The investigation was carried out by Beijing Institute of Construction Mechanization and Beijing Sany Heavy Construction Machinery Ltd. The analysis of this investigation is divided into ten sections: customer feature of rotary drilling rig; application scope of rotary drilling rig; rotary drilling rig manufacturers; comparison between import and domestic products; purchase channel; main weakness of Chinese rotary drilling rig; maintenance of rotary drilling rig; main difficulties in the construction usage of rotary drilling rig; expectation of customers for rotary drilling rig; suggestion to the China rotary drilling rig market.
文摘Currently, rotary drilling machines and relative construction technology have been known gradually. They were widely applied in the big diameter drilling compresol pile construction in North China. But the application of the rotary drilling machines is limited in South China, especially the southeast area, because of the soft soil and the big scale of pile. On the other hand, impact hammers have been widely used in drilling pile construction in mollisol area. Recently, rotary drilling machines and impact hammer are working together in several projects in mollisol area to prove its feasibility. This article introduces the construction instance using rotary drilling machines together with impact hammer in the drilling compresol pile construction of Wushashan Power Plant in Datang town of Zhejiang Province. Besides, the advantages and the feasibility were listed.
