Design and application of continuous mining and paste filling process system
Aiming at the problem of coal mining under the industrial square of Chazhuang Coal Mine,the continuous mining and paste filling technology were designed,the parameters of key equipment involved in mortar production and gangue crushing treatment were given,which realized green filling under the premise of ensuring the paste quality.The filling industrial pump was used to pump the paste,and the upper port of the filling roadway was sealed with shotcreting to ensure the roof connection rate.During mining impact analysis,it was found that after paste filling,the maximum roof separation was 20.5 mm,the maximum surface subsidence was 27 mm,and the ground buildings are within the Class I damage level,the feasibility of the scheme was proved and problem of the coal mining under buildings was solved for the mine.
coal mining under buildings,railways and water bodiescontinuous mining and fillingpaste fillingfilling processfilling system
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