公开(公告)号：US11976914B1

公开(公告)日：2024-05-07

申请号：US18370545

申请日：2023-09-20

申请人： UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING ,  CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

发明人： Renshu Yang ,  Yanbing Wang ,  Chengxiao Li ,  Zhaoran Zhang ,  Xinmin Ma ,  Hang Zhang ,  Zhouqi Bao

IPC分类号： F42D1/22 ,  E21D9/00 ,  F42D3/04

CPC分类号： F42D1/22 ,  E21D9/006 ,  F42D3/04

摘要： An efficient blasting method for similar cutting in a rock tunnel is provided, which relates to the technical field of rock tunneling. The method includes the following steps: drilling: drilling central holes, lower cutting holes, upper cutting holes, auxiliary holes and peripheral holes in a cross section area for tunnel construction; filling explosives: filling explosives into the central holes, the lower cutting holes, the upper cutting holes, the auxiliary holes and the peripheral holes; and blasting: blasting following blast holes in turn to complete full-face one-time blasting in a millisecond delay blasting mode. The method is applicable for construction scenes of drilling and blasting methods.

公开(公告)号：US11891865B1

公开(公告)日：2024-02-06

申请号：US18455878

申请日：2023-08-25

申请人： HEFEI DESIGN & RESEARCH INSTITUTE OF COAL INDUSTRY CO., LTD ,  UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING ,  CHINA COAL NO. 3 CONSTRUCTION CORPORATION (GROUP) LTD ,  ANSTEEL GROUP MINING CORPORTION LIMITED

发明人： Huidong Xu ,  Renshu Yang ,  Bin Xu ,  Ning Liu ,  Guang Li ,  Yong Zhang ,  Jinghui Ye ,  Lin Lv ,  Fei Ma ,  Donghui Man ,  Tingting Bao ,  Zheng Li ,  Yingcan Liu ,  Guozheng Zhou ,  Bo Ding

IPC分类号： E21B21/00 ,  E21D1/06 ,  E21D5/00

CPC分类号： E21B21/002 ,  E21D1/06 ,  E21D5/00

摘要： A full-face shaft tunnel boring machine system includes a tunnel boring machine cutterhead device for tunneling downwards in a shaft; a full-hydraulic formwork device for supporting and walling in a wellbore; and an upper muck-discharge system for vertically conveying rock mucks generated by tunneling. The tunnel boring machine cutterhead device comprises a vertical guide frame, a cutter-expanded boring head and an advanced cutterhead that are fixedly connected in a vertical order from top to bottom so as to form an integrated structure. The vertical guide frame is a hollow cylindrical structure and driven to rotate around an axis of the vertical guide frame by a power mechanism, and an outer wall of the vertical guide frame is provided with multiple sets of first guide rollers.