CAJ | 학술논문

采空区对露天矿的安全生产具有极大的威胁。针对弓长岭露天矿众多已探明的采空区进行了稳定性分析。对露天矿日常的爆破作业进行了爆破测振，统计回归出萨道夫斯基经验公式参数，获得了爆破振动对空区产生的荷载。建立了采空区顶板三铰拱承载的力学模型，推导了空区顶板稳定性的判据。利用数值模拟方法，计算拱形空区在不同荷载作用下稳定性，对弓长岭露天铁矿已探明各空区进行了预警，为弓长岭露天矿处理空区及安全生产提供依据。
채공구대로천광적안전생산구유겁대적위협。침대궁장령로천광음다이탐명적채공구진행료은정성분석。대로천광일상적폭파작업진행료폭파측진，통계회귀출살도부사기경험공식삼수，획득료폭파진동대공구산생적하재。건립료채공구정판삼교공승재적역학모형，추도료공구정판은정성적판거。이용수치모의방법，계산공형공구재불동하재작용하은정성，대궁장령로천철광이탐명각공구진행료예경，위궁장령로천광처리공구급안전생산제공의거。
The goaf is a great risk to work safety in open-pit mine.The stability of many proved goaf in Gongchangling open-pit mine were analyzed .By monitoring the blasting vibration produced by the daily blasting op-eration in open-pit mine, the parameters of Sadov's empirical formula were obtained by statistical regression , and the loading of blasting vibration on the goaf was obtained .The mechanical model of three hinged arch bearing for the goaf roof was established , and the criterion of roof stability for the goaf was deduced .The stability of arch goaf under different loading were calculated by using numerical simulation method , and the warning on proved goaf in Gongchangling open-pit iron mine were conducted .It provides basis for the dispose of goaf and work safety in Gongchangling open-pit mine.