CAJ | 학술논문

准确掌握露采平台安全及下部隐伏采空区的稳定性，是矿山进行安全生产工作的重要前提。为了确定某矿露采平台下部隐伏采空区跨度与露采平台安全厚度之间的关系，通过室内岩石力学实验，获取岩样相应的物理力学参数；结合摩尔-库仑强度破坏准则，应用FLAC3D数值计算软件，建立三维模型；在一定的空区走向长度（30 m）和不同的跨度条件下，以每次10 m的工程进度向地表方向模拟开挖，分析空区顶板临界安全厚度与空区跨度和岩体抗拉强度的相互关系。给出了露采平台安全厚度与空区跨度关系和抗拉强度三者的线性拟合公式，为类似矿山的采矿工作提供借鉴。
준학장악로채평태안전급하부은복채공구적은정성，시광산진행안전생산공작적중요전제。위료학정모광로채평태하부은복채공구과도여로채평태안전후도지간적관계，통과실내암석역학실험，획취암양상응적물리역학삼수；결합마이-고륜강도파배준칙，응용FLAC3D수치계산연건，건립삼유모형；재일정적공구주향장도（30 m）화불동적과도조건하，이매차10 m적공정진도향지표방향모의개알，분석공구정판림계안전후도여공구과도화암체항랍강도적상호관계。급출료로채평태안전후도여공구과도관계화항랍강도삼자적선성의합공식，위유사광산적채광공작제공차감。
Accurate understanding of the open-pit mining bench security and mined-out area stability is an important prerequisite for mining safety. A series of rock mechanics experiments were conducted to obtain the basic physic mechanical parameters of ore rock samples and analyze the relationship between safe thickness of open-pit mining platform and hidden goaf span. A three-dimensional simulation model was built up by FLAC3D based on the conditions of goaf area span under the specified length of 30 meters of goaf area with the progress of 10 meters every time to excavate up the worked out section. A linear fitting formula was put forward.