Method for preventing and controlling water inrush channels generated by faults of coal mining floors

• Main Authors: ZHANG SHICHUAN, WANG XUEWU, ZHU XIA, SUN WENBIN, ZHOU SHAOLIANG, DU HOUQIAN
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2016
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

The invention provides a method for preventing and controlling water inrush channels generated by faults of coal mining floors. The method includes the steps that (1) a floor rock layer near a stope face is detected; (2) a drilled hole a is drilled in the stope face advanced gate roadway floor, and a casing A is installed; (3) a drilled hole b is drilled in the stope face advanced gate roadway floor, and a casing B is installed; (4) the casing A is used for draining water, and the casing B is used for grouting for blocking water; (5) while water is drained and grouting is conducted for blocking water, the water pressure change in the drainage position of the casing A is monitored, and grouting in the casing B is stopped in due time; (6) the casing A is connected to a grouting pump, and grouting and water-blocking materials are injected at high pressure; (7) grouting in the casing A is stopped when grout reversing in the casing A is stable; (8) a drilled hole c, a drilled hole d, a drilled hole e and a drilled