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Information × Registration Number 0211U007426, 0110U003883 , R & D reports Title Intensification of degassing of 24th western slopping seam longwalls i3 1 joint ventures "Mine managements" Suhodolsky-east "" with a hydrodynamic influence method on the coal seams with coefficient of degassing 0,3 4 output per face rise. popup.stage_title Head Sofiyskij Konstantin Konstantinovich, Доктор технічних наук Registration Date 28-04-2011 Organization Institute of Geotechnical mechanics named by N.S. Polyakov of NAS of Ukraine popup.description2 Subject of research - a mining massive keeping methane in coal seams and country rocks. The job purpose - intensification of degassing of a coal seams through wells with coefficient of degassing to 0,3 for exclusion of stops of longwall on a gas-oil ratio, drops of gasdynamic activity of a seam, a load increase on longwall and safety increases of support of mining operations at optimisation of 24th western grade coal seams longwalls i31 joint venture "Mine management" "Suhodolsky-east". Methods of researches- analytical, laboratory experiment, mining experiment, a statistical analysis. As a result of carrying outof a pretesting of the deviceof hydrodynamic impact its work functionability over the range delivery pressures to 7 MPA is fixed at support of time of a pressure release in time not exceeding 0,3 seconds. The time in use of technological wells before optimization by their longwall compounded from 40 to 90 days the maximum volume dedicate methane of one well compounds more than 40 thousand m3. The maximum intensity of gas-making reaches 526 m3/days. Dynamics of gas-making from technological well is presented by a polynominal curved line q =-0,032t3+1,355t2-6,845t+101 with value of reliability of approximating R I = 0,676. Dynamics of gas-making from methane drainage borehole is presented by a polynominal curved line q = 9е-0,5t4-0,014t3+0,47t2+5,41t+105,6 with value of reliability of approximating R I = 0,84. The total quantity of the methane extracted from a seam coal through 15 wells, has compounded 338,2 thousand m3. The length of a treated district - 500 m. The degree of degassing of this district compounds 30 %. As a result of effect concentration of methane in district and longwall return air at its optimization has decreased from 0,67 and 0,76 % to 0,38 and 0,47 % accordingly, that is in 1,8 and 1,7 times. At a hewing in treated region of stops of longwall on a gas-oil ratio did not descend. As a result of hydrodynamic impact the outburst hazard coefficient in the upper part of longwall has decreased from value 1,5-2,0 to a value 0,9-1,5. Also the prospective parametre of outburst hazard has decreased. The hewing in treated region was spent at the prognosis "not dangerously". Results of job can be used for intensification of a coal seams i31 in the conditions of 24 east grade joint venture "Mine management" longwalls "Suhodolsky-east" and drops of gasdynamic activity of coal seams. DEGASSING, THE HYDRODYNAMIC IMPACT DEVICE, TECHNOLOGICAL WELL, METHANE DRAINAGE BOREHOLE, GAS-MAKING,METHANE DISCHARGE, SUDDEN OUTBURSTS, PRESSURE RELEASE, CONCENTRATION OF METHANE, BREAKAGE FACE. Product Description popup.authors Барадулін Євген Григорович Власенко В.В. Криворучко О. Н. Мучник Е.І. Нечитайло Валерій Олександрович Опришко Ю.С. Петух О.П. Силін Дмитро Павлович Софійський К. К. popup.nrat_date 2020-04-02 Close