Table 3 Rock bursts in WF250107-1.

From: Failure mechanisms of energy redistribution in excavation roadways: experimental and numerical investigation

Time

Energy(104 J)

Failure mode

Other phenomena

2019-04-12

0.670

Floor heave of 0.2 m in tailgate from 640 m to 680 m

Slight displacement of tracks and belt frames

2019-06-22

0.207

Floor heave of 0.2 m in tailgate from 1320 m to 1340 m

Slight displacement of H-frames

2019-12-02

0.920

Floor heave of 0.2 ~ 0.3 m in tailgate from 990 m to 1020 m

Roof slab chipped and tracks slightly displaced

2020-01-03

2.50

Floor heave of 0.2 ~ 0.3 m in tailgate from 1000 m to 1060 m

–

2020-01-10

2.20

Floor heave of 0.2 m in tailgate from 1300 m to 1380 m

Track displacement of 0.1 m in tailgate from 1280 m to 1300 m

2020-03-20

6.10

Floor heave of 0.2 m in headgate from 1490 m to 1510 m

Shuttle car derailment

2020-05-20

0.660

Floor heave of 0.2 m in tailgate from 580 m to 700 m

Slight track displacement and eight broken bolts

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