CAJ | 학술논문

以某铁矿-230~-290 m 首采中段工程为研究对象，采用现场多点位移计监测及数值模拟相结合的方法，针对大直径深孔阶段空场嗣后充填法充填体对采场围岩移动控制作用的时空规律进行了研究，建立了上覆岩层移动控制的支承压力三维力学结构模型。研究结果表明，15 m宽度的采场结构只要在延滞期内及时充填，围岩的移动变形能够得到有效控制。矿体下盘成为支承上覆岩层的主要承载结构，胶结充填体支承上覆岩层的能力有限，但能够有效限制上覆岩层的移动变形，矿房和矿柱采场围岩最终变形量无差异性，覆岩最大下沉量39 mm，地压显现不明显。
이모철광-230~-290 m 수채중단공정위연구대상，채용현장다점위이계감측급수치모의상결합적방법，침대대직경심공계단공장사후충전법충전체대채장위암이동공제작용적시공규률진행료연구，건립료상복암층이동공제적지승압력삼유역학결구모형。연구결과표명，15 m관도적채장결구지요재연체기내급시충전，위암적이동변형능구득도유효공제。광체하반성위지승상복암층적주요승재결구，효결충전체지승상복암층적능력유한，단능구유효한제상복암층적이동변형，광방화광주채장위암최종변형량무차이성，복암최대하침량39 mm，지압현현불명현。
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.