Beijing Jiaotong University

China Railway 16th Bureau Group Co., Ltd.

China Railway 16th Bureau Group Beijing Jiangong Machinery Co., Ltd.

China Railway 16th Bureau Group 1st Engineering Co., Ltd

China Railway 16th Bureau Group 4th Engineering Co., Ltd

China Railway 16th Bureau Group Co., Lid

China Railway Eryuan Engineering Group Co, Eid

Wuxian Wang

Dong Ma

Yi Sun

Su Yan

Qian Dong

Qinghong Wu

Jinwen Yang

Mingli Huang

Yitao Feng

Binhua Wu

Wanqiang Zhao

Liujie Jin

Huaxuan Xu

Weiming Zhang

Liang Kuang

Liang Du

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.

Coal uncovering construction method for blasting large cross-section gas tunnels

Provided are a protecting trolley and a construction method of rock burst prewarning protection system in non-contact tunnel construction. The protecting trolley includes a framework, a walking assembly, a rockfall buffering assembly, a spraying assembly and a rock burst prewarning system. The rockfall buffering assembly includes an arch frame in a fixed connection with the framework and a protecting net fixed on the arch frame. The spraying assembly includes a track car in connection with the rockfall buffering assembly and a spraying hose fixed on the track car, and the spraying hose sprays towards the surrounding rock. The rock burst prewarning assembly includes a thermosensitive infrared sensor used for detecting the temperature of the surrounding rock and a highly sensitive laser sensor used for detecting the deformation of the surrounding rock.

Protecting trolley and construction method of rock burst prewarning protection system in non-contact tunnel construction

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Beijing, China

Wuxian Wang