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公开(公告)号：US20240035380A1
公开(公告)日：2024-02-01
申请号：US18224720
申请日：2023-07-21
申请人： China Railway 16th Bureau Group Co., Ltd , China Railway Eryuan Engineering Group Co., Ltd , Beijing Jiaotong University , China Railway 16th Bureau Group 1st Engineering Co., Ltd , China Railway 16th Bureau Group 4th Engineering Co., Ltd
发明人： Wuxian Wang , Su Yan , Liang Kuang , Jinwen Yang , Mingli Huang , Yitao Feng , Wanqiang Zhao , Liujie Jin , Weiming Zhang , Qian Dong , Liang Du
CPC分类号： E21D9/006 , E21B49/006 , E21B2200/20
摘要： A coal uncovering construction method for blasting large cross-section gas tunnels includes: analyzing stress distribution characteristics in front of a tunnel boring working face, and then determining a thickness calculation model of a reserved rock wall based on a limit equilibrium theory; establishing a tunnel model, simulating a construction condition and analyzing a construction result, and determining a thickness of the reserved rock wall; and fixing a detonator through a fixed sand ring, fitting the detonator with a construction hole by adjusting an adjustable protective plate, then embedding the detonator into a blast hole, and blasting the detonator for tunnel construction. Furthermore, an extension ring is fixed between the fixed sand ring and the adjustable protective plate.
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公开(公告)号：US12025007B2
公开(公告)日：2024-07-02
申请号：US18224720
申请日：2023-07-21
申请人： China Railway 16th Bureau Group Co., Ltd , China Railway Eryuan Engineering Group Co., Ltd , Beijing Jiaotong University , China Railway 16th Bureau Group 1st Engineering Co., Ltd , China Railway 16th Bureau Group 4th Engineering Co., Ltd
发明人： Wuxian Wang , Su Yan , Liang Kuang , Jinwen Yang , Mingli Huang , Yitao Feng , Wanqiang Zhao , Liujie Jin , Weiming Zhang , Qian Dong , Liang Du
摘要： A coal uncovering construction method for blasting large cross-section gas tunnels includes: analyzing stress distribution characteristics in front of a tunnel boring working face, and then determining a thickness calculation model of a reserved rock wall based on a limit equilibrium theory; establishing a tunnel model, simulating a construction condition and analyzing a construction result, and determining a thickness of the reserved rock wall; and fixing a detonator through a fixed sand ring, fitting the detonator with a construction hole by adjusting an adjustable protective plate, then embedding the detonator into a blast hole, and blasting the detonator for tunnel construction. Furthermore, an extension ring is fixed between the fixed sand ring and the adjustable protective plate.
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