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充填法或水砂充填法已使用了多年,随着旋流器脱水分级的应用,尾砂充填在金属矿山日益广泛采用.充填体的作用随时间的推移,也逐渐有所变化和发展.起初,充填体主要起工作台和支撑采场上下盘围岩、防止围岩在回采时脱落;随着开采深度的增加,地压逐渐增大,在维护天井,回采底柱等方面都产生了困难,有的甚至发生岩爆,所以提出了提高充填体支撑能力的问题.通过各种方式对充填进行研究和处理,选择最优的粒级组成、加入一些稳定剂、提高密度等等,或综合采用一些办法,改进了充填体的承载能力和硬化程度,因而减少了加在矿柱等其它介质上的压力,减少了压力集中和岩爆的产生.
Fill method or water sand filling method has been used for many years, with the cyclone dewatering grading, tailings filling in the increasingly widespread use of metal mines.Filling body function over time, but also gradually change and development.First , The main body of the filling body plays a role of a workbench and supports the surrounding rock of the upper and lower plates in the stope so as to prevent the surrounding rock from falling off during mining; as the mining depth increases, the ground pressure gradually increases, creating difficulties in maintaining the patio and the bottom pillar , And some even rock burst, so put forward to improve the support capacity of the filling problem.Through a variety of ways to fill the research and processing, the choice of the optimal composition of the particle size, adding some stabilizers, to increase the density, etc., or integrated Some measures have been taken to improve the carrying capacity and the degree of hardening of the filling body, thereby reducing the pressure on other media such as pillars and reducing the pressure concentration and rock burst.