Research Article

Applied Research of Water Jet Technology in Preventing Rock Burst Occurred in Roadways

Table 7

The monitoring records of typical rock-burst accidents.

LocationNumberTimeLocationRange of influence/mSpecific characteristics

Panel 250206 in syncline geological structure influence area12013-04-02250206 headgate28The section of roadway was inverted trapezoid at the most serious position. The lower width and height of this section changed from 4.8 m to 4.3 m and 4.0 m to 3.5 m, respectively.
22013-04-13250206 tailgate198At 774-853 m, the lower left corner of the roadway was seriously inflated, the track is inclined and displaced, the roof of the upper right corner is seriously sunk, and the height of roadway was only 2.9 m in the most severe position.
32013-04-22250206 headgate240The heaving floor of roadway was serious, the mean value of heaving floor was 0.3 m, and the most serious value of heaving floor was 0.62 m.
42013-04-29250206 headgate45The mean value of heaving floor was 0.48 m, and the most serious value of heaving floor was 0.94 m. the left rib (mining direction) of roadway was seriously deformed, with a mean deformation of 0.38 m, and the most serious deformation of left rib was 0.69 m.
52013-05-11250206 tailgate216This time is mainly heaving floor of roadway, with a mean value of 0.4 m, the most serious value of 0.96 m, and slight influence in roadway roof and two ribs.
62013-05-18250206 headgate121The mean value of heaving floor was 0.6 m, and the most serious value of 1.82 m; the right rib (mining direction) of roadway changed from 4.5 m to 2.9 m.
72013-05-24250206 headgate200The mean value of heaving floor was 0.93 m, and the most serious value is 1.63 m; the whole track of the roadway in the severe section was lifted as a whole.
Panel 250205 in syncline geological structure influence area82015-01-02250205 tailgate60In the severely deformed section, the roadway was seriously deformed and damaged, the roof and floor were connected, and the two ribs moved close greatly.
92015-01-07250205 tailgate54At 936-990 m, the value of heaving floor was 0.4-0.8 m, and the belt rack was lifted and tilted outwards.
102015-02-07250205 tailgate150At 1600-1750 m, the value of heaving floor was 0.3-1.1 m, the roof subsidence is small, and the track is lifted and tilted outward.
112015-02-12250205 headgate60The roof sunk by 0.3 m, the value of heaving floor was 0.3-0.5 m, the track was lifted, and the transfer train was overturned.
122015-02-18250205 tailgate20The two ribs of roadway moved close to 0.3-0.5 m, and the roof and floor changed a little.
132015-02-28250205 tailgate70The floor bulged by 0.3-0.5 m, and the two ribs moved closer by 0.1-0.3 m.
142015-03-08250205 tailgate15The periodic weighting of the panel 250205 caused the heaving floor of roadway in advance of the mining face.
152015-04-19250205 tailgate8The floor bulged by 0.2-0.3 m, and the two ribs (mining direction) of roadway were seriously deformed, with a mean deformation of 0.28 m in left rib and 0.22 m in right rib.
162015-05-10250205 tailgate11The value of heaving floor was serious, with a mean value of 1.9 m, the most serious value is 2.4 m.