| 摘要 |
A method for control of the project of degassing of a high-load operating breakage face includes measurement of the rate of methane gas liberation from worked-out space and concentration of methane, degassing of worked-out space through surface wells, degassing of worked-out space through underground wells, degassing of worked out space with suction for support of safety of underground works in operating breakage face, with measurement of flow rate of gas-air mixture, determination of average rate of gas liberation for methane through averaging during 120-hour sliding interval, determination of acceleration by the average rate of methane gas liberation. In the case of acceleration of gas liberation for methane being positive during 60 hours in a stepwise way part of gas that is captured from worked out space through suction pipeline is increased 1.3-1.5 times, and 1.15-1.2 times for gas captured through underground wells, and after that part of gas captured from the worked out space through suction pipeline during 9-11 days is decreased in one hour according to exponent to initial level. In the case of acceleration of total gas liberation being negative during 60 hours part of gas captured from the worked out space through suction pipeline is decreased 1.2-1.4 times. Then gas-air mixture extracted from the mine is captured, with obtaining technological gas-air mixture with optimal concentration of methane. Through mixing gas-air mixture from surface degassing wells the gas-air mixture is supplied to co-generation installation, with production of heat and electric energy with co-generation installation, and gas, heat and electric energy are supplied to consumers. The technical result of the invention is in support of permissible concentration of methane in underground mine workings and support of optimal concentration of methane in gas-air mixture that is supplied for co-generation, due to that maintenance of needed level of safety of underground works is provided at simultaneous provision of payable operation of co-generation installation. |
