Mine exploitation based on stoping, separation and filling control

A method of exploiting a mine, comprising:

• step 1:
• mining, using a shearer of a gangue-less coal mining system, along an edge of a coal seam to reduce gangue generated during mining in a working face, and excavating more coal roadways than rock roadways in number to reduce an output of gangue;
• step 2:
• choosing a coal and gangue separation method according to a sorting capacity of the mine, precision requirement, a coal gangue grain size range, size limitation of a separation chamber, complexity of separation processes and equipment cost;
• step 3:
• choosing a filling method according to geological conditions of the coal seam, mine production capability requirement, rock stratum control requirement, supply quantity of filling materials and an economic budget;
• step 4:
• calculating filling rate control requirements according to gangue discharge requirement and theoretical calculation, numerical simulation and physical simulation of equivalent mining height, height of a water flowing fractured zone to be reached and immediate roof deflection, wherein a belt weigher and a roof dynamic monitor are arranged to monitor a filling rate;
• step 5:
• determining a filling process and a separation process according to the filling rate control requirements obtained in the step 4;
• and
• step 6:
• further feeding back and adjusting filling process parameters and separation process parameters, the filling process parameters comprising tamping force, the number of times of tamping, gangue grain size grading and tamping angle, and the separation process parameters comprising separable grain size, by monitoring a mass ratio of filling to mining, roof subsidence, a height of mining induced water-conducting fissures, coal and rock mass strain energy density and ground subsidence;
• adjusting the filling process parameters and the separation process parameters as determined by monitoring the filling rate via the belt weigher and the roof dynamic monitor.