Original document(60 pages)  中文版
    A universal individual concealed underground excavation structure is composed of stratum supporting unit and concealed excavation unit. The said stratum supporting unit consists of supporting arch plates and exchangeable supporter. The said concealed excavation unit comprises the bearing system for excavation and the exchangeable arch plates for bearing stratum.
Application Number
申请号		 02143694 Application Date
申请日		 2002.09.28
Title 名称 General self-support closed digging structure
Publication Number
公开号		 1431385 Publication Date
公开日		 2003.07.23
Approval Pub. Date Granted Pub. Date
International Classification 分类号 E21D9/00
Applicant(s) Name
申请人		 Peng Gaopei
Address 地址 610081
Inventor(s) Name 发明人
Attorney & Agent 代理人
More information 更  多  信  息


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