Fracturing pre-control method for rock burst ground horizontal well area of steeply inclined coal seam

The invention provides a steeply inclined coal seam rock burst ground horizontal well area fracturing pre-control method which comprises the steps that in the steeply inclined coal seam mining process, overlying strata fracture released energy in the working face stoping process of a steeply incline...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YU BIN, WANG NING, YANG WENLIAN, LI MING, LU SHUDE, GAO RUI, ZHAO HONGJIE, MIAO WEIDONG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention provides a steeply inclined coal seam rock burst ground horizontal well area fracturing pre-control method which comprises the steps that in the steeply inclined coal seam mining process, overlying strata fracture released energy in the working face stoping process of a steeply inclined coal seam is monitored through micro-seismic monitoring equipment, and a rock stratum with the highest fracture released energy is determined as a fracturing target layer; drilling downwards from the ground and arranging a vertical section of a fractured well, and drilling and arranging a horizontal section of the fractured well along the strike of the steeply inclined coal seam after reaching the fractured target layer; the drilling and arrangement direction of the horizontal section of the fractured well is opposite to the advancing direction of the working face; perforation operation is carried out on the horizontal section of the fractured well, and perforation is carried out in the inclination direction of t