The methodology for working out the techniques for geophysical monitoring of the process of directional hydraulic fracturing of a hard roof and the process of local hydrotreating of a coal seam face working space, its implementation within the framework of RSF project

The methodology of working out the techniques for geophysical monitoring of the process for directional hydraulic fracturing of a hard roof and the process of local hydrotreating of a coal seam face working space is introduced in the paper. The research is done in two basic directions: the first is predicting and managing geo-mechanic condition of a gas-saturated tight rock massif containing coal; the second one is monitoring and managing the processes of hard roof directional hydraulic fracturing and protective hydrotreating of a coal seam against rock bumps and sudden outbursts. To monitor the stress condition of a face working space a complex method that includes monitoring of stress condition by spectral-acoustic method (the analysis of a noise spectrum of an operating equipment) and gas factor control by gas monitoring equipment (controlling methane concentration near the fore-breast is justified. Some widely known options of applying spectral-acoustic method for controlling stress condition are analyzed and the application of the best-attested one is justified. To control the process of a jump-like growth of a fracture in a roof and in a coal seam the method of acoustic emission if justified.