Coal deformation energy and gas expansion energy are the main power sources for coal
and gas outbursts (called outbursts for short). Although the combined effect hypothesis of the …

Exploitation of coalbed methane (CBM) has dual advantages of not only providing
alternative clean-energy but also effectively reducing the proneness for gas outbursts. CBM …

Borehole destressing is one of the most widely used techniques for mitigating coal bursts.
Understanding the working principle of destressing boreholes, exploring the main efficiency …

Rock burst is one of the major geological hazards in coal mines and is difficult to prevent.
Faced with this problem, the low-frequency electromagnetic radiation (EMR) test …

The fracture characteristics of fine-grained granite were examined for a potential geothermal-
energy reservoir. The granite was thermally cycled in a furnace between 100° C and 300° C …

Compared with the pre-modification technique, such as hydraulic fracturing, the gas injected
for enhanced coalbed methane recovery (ECBM) technique offers not only a good economic …

The water-based fracturing fluid is commonly used in coalbed methane (CBM) industry. The
fracturing fluid invades into both stimulated and natural fractures. The fracture permeability …

Injection of gas mixture (CO 2/N 2) into coal seam can both enhance methane recovery and
reduce carbon dioxide emission. Coal permeability determines the mass transport speed …

Active water fracturing is one of the commonly used technologies in area for enhanced
coalbed methane (CBM) extraction. However, after the fracturing process, active water …

The water-based fracturing stimulation is commonly used for low permeability coalbed
methane (CBM) reservoirs. The influence of various fracturing fluids on the gas sorption and …