Experimental study on the prediction of rockburst hazards induced by dynamic structural plane shearing in deeply buried hard rock tunnels

2016 ◽  
Vol 86 ◽  
pp. 210-223 ◽  
Author(s):  
Fanzhen Meng ◽  
Hui Zhou ◽  
Zaiquan Wang ◽  
Liming Zhang ◽  
Liang Kong ◽  
...  
Keyword(s):  
Experimental Study ◽  
Hard Rock ◽  
Structural Plane ◽  
Rock Tunnels ◽  
Plane Shearing

Experimental study of factors affecting fault slip rockbursts in deeply buried hard rock tunnels

2016 ◽  
Vol 76 (3) ◽  
pp. 1167-1182 ◽  
Author(s):  
Fanzhen Meng ◽  
Hui Zhou ◽  
Zaiquan Wang ◽  
Liming Zhang ◽  
Liang Kong ◽  
...  
Keyword(s):  
Experimental Study ◽  
Hard Rock ◽  
Fault Slip ◽  
Factors Affecting ◽  
Rock Tunnels

Rheological properties of surrounding rock in deep hard rock tunnels and its reasonable support form

2016 ◽  
Vol 23 (4) ◽  
pp. 898-905 ◽  
Author(s):  
Hui Wang ◽  
Wei-zhong Chen ◽  
Qing-biao Wang ◽  
Peng-qiang Zheng
Keyword(s):  
Rheological Properties ◽  
Hard Rock ◽  
Surrounding Rock ◽  
Rock Tunnels

Experimental Study on Wear Behaviors of TBM Disc Cutter Ring in Hard Rock Conditions

2018 ◽  
Vol 61 (5) ◽  
pp. 920-929 ◽  
Author(s):  
Laikuang Lin ◽  
Yimin Xia ◽  
Qingsong Mao ◽  
Xuhui Zhang
Keyword(s):  
Experimental Study ◽  
Hard Rock ◽  
Disc Cutter

scholarly journals Dynamic design method for deep hard rock tunnels and its application

2016 ◽  
Vol 8 (4) ◽  
pp. 443-461 ◽  
Author(s):  
Xia-Ting Feng ◽  
Chuanqing Zhang ◽  
Shili Qiu ◽  
Hui Zhou ◽  
Quan Jiang ◽  
...  
Keyword(s):  
Hard Rock ◽  
Design Method ◽  
Dynamic Design ◽  
Rock Tunnels

scholarly journals Experimental Study of Gangue Layer Weakening with Deep-Hole Presplitting Blasting

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Jianchi Hao ◽  
Lifeng Ren ◽  
Hu Wen ◽  
Duo Zhang
Keyword(s):  
Experimental Study ◽  
Coal Seam ◽  
Coal Mining ◽  
Hard Rock ◽  
Blast Hole ◽  
Normal Operation ◽  
Deep Hole ◽  
Coal Seams ◽  
Layer 4 ◽  
Similar Simulation

Advances in coal mining technology and an increase in coal output are resulting in increasingly challenging conditions being encountered at coal seams. This is particularly so at thin coal seams, where a large number of hard rock layers known as gangue are often present, which seriously affect the normal operation of the shearer and reduce coal output. Therefore, the effective weakening of hard gangue layers in a coal seam is crucial to ensure that the shearer operates effectively and that coal output is maximized. In this paper, the weakening effect of deep-hole presplitting blasting technology on the hard gangue layer in a coal seam is studied via a similar simulation. Four test schemes are designed: (1) A blasting hole spacing of 200 mm with the holes offset vertically. (2) A blast hole spacing of 300 mm with the holes offset vertically. (3) A blast hole spacing of 200 mm with the holes parallel to the gangue layer. (4) A blasting hole spacing of 200 mm with the holes offset vertically and initiation of interval blasting. The effect of the different blasting hole spacings and arrangements and different detonation methods on the weakening of coal seam clamping by gangue is studied, and the best configuration is identified. This improves the effect of weakening the coal gangue layer by deep-hole presplitting blasting.

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