Water Infusion Water infusion, the injection of water at high pressure (>7 Mpa), has been explored as a stress relief mechanism to prevent outbursts. The water pressure fractures the coal in advance of the face and provides for slow relaxation of stress through lateral movement enhanced by the presence of […]

Ground Destressing Two of the key elements associated with outbursts are mine gases and tectonics. Just as gas drainage involves the prevention of outbursts in the seam and or associated rock strata to prevent outbursts. Currently, there are four different mechanisms used to de-stress a seam outburst prevention, these being […]

Pulse Infusion Shotfiring Inducer shotfiring is considered to be the oldest and most widely used method to control outbursts in mines, and it was initially developed in France by the end of 19th or beginning of the 20th Centuary in the Gard coalfield. Blast holes are drilled into the face […]

Hydraulic fracturing has been used by the mining industry at least since the end of the 19th century, when it was applied to quarrying blocks of granite, and in the petroleum industry since the late 1940s when it was introduced to stimulate wells. It now represents a major petroleum service […]