采矿与安全工程学报Issue(3)：430-434,5.
空场嗣后充填法充填体对围岩移动控制作用时空规律研究
Space-time rule of the control action of filling body for the movement of surrounding rock in method of the delayed filling open stoping
摘要
Abstract
Selecting the first mining project at the-230~-290 m middle section of an iron mine as the research object, the space-time rule of filling body for controlling the movement of stope surrounding rock in the large-diameter long-hole with the delayed filling open stoping method has been studied in methods of field monitoring of multipoint displacement extensometers and numerical simulation. The three-dimensional mechanical structure model of abutment pressure for the movement control of over-lying rock mass has been established in this paper. The results indicate that the movement and defor-mation of surrounding rock could be effectively controlled as long as the stope of 15-meter width has been filled within the demurrage time. The footwall becomes the main bearing structure to support overlying rock mass. The capacity of the cement filling body is limited to support overlying rock mass while it is a valid constriction of the movement and deformation of overlying rock mass. The maximum deformation of overlying rock mass is 39 mm and there is almost no difference between the ultimate deformations of surrounding rock at the room and pillar. So the ground pressure is not obvious.关键词
充填体/围岩移动变形/支承压力拱/时空规律/数值模拟Key words
filling body/movement and deformation of surrounding rock/bearing pressure arch/space-time rule/numerical simulation分类
矿业与冶金引用本文复制引用
于世波,杨小聪,董凯程,解联库,孙晓明,郭利杰..空场嗣后充填法充填体对围岩移动控制作用时空规律研究[J].采矿与安全工程学报,2014,(3):430-434,5.基金项目
国家自然科学基金项目(510004014)；国家“十二五”科技支撑计划项目(2012BAB01B01，2013BAB02B02) （510004014）
