Downhole barren rock and tailing synergistic cemented filling method

The invention discloses a downhole barren rock and tailing synergistic cemented filling method. Barren rock is crushed, then loaded onto a trunk and conveyed into a stope; and then barren rock filingand tailing slurry filling are simultaneously conducted in the stope, or the stope is filled with the barren rock in the time period when the stope is filled with the tailing slurry but the tailing slurry is not initially set. According to the downhole barren rock and tailing synergistic cemented filling method, the ground pressure of the stope can be controlled, surface subsidence is prevented, emission of solid waste in a mine is reduced, unit consumption of cement can be reduced, and the downhole barren rock and tailing synergistic cemented filling method is an optimal emission path of barren rock consumed by current downhole mine mining. 本发明公开了一种井下废石尾砂协同胶结充填方法，将废石经破碎后装车送入采场；然后采场中废石充填与尾砂料浆同时进行，或者在尾砂料浆充入采场但没有初凝前的时间段将废石充入采场。本发明可以控制采场的地压，防止地表塌陷，减少了矿山固体废物排放，能减少水泥单耗，是当前井下开采矿山消纳废石最佳排放途径。