【摘要】 磷石膏作为充填骨料充填于井下采空区,目前国内尚无先例。通过设计实例,介绍了磷石膏作为充填骨料充填井下的方法。更多还原

【Abstract】 Phosphor-gypsum is filled into the mined empty area as filling aggregate,it is not still applied yet in China at present.The method of phosphor-gypsum cementation and filling technology is introduced with the design sample.更多还原