A Study on the Factors Influencing Coal Fracturing Range Caused by Liquid Carbon Dioxide Phase Transition

Figure 16

Natural methane flow curve with time for some boreholes before and after blasting. (a) Average natural gas flow data curve of each borehole before blasting; (b) data curve of blasting holes after blasting; (c) data curve of 1# monitoring hole after blasting; (d) data curve of 6# monitoring hole after blasting.

(a)

(b)

(c)

(d)