CAJ | 학술논문

上行开采的可行性主要取决于下矿层开采后,引起上覆岩层移动、变形和破坏是否破坏了上矿层整体性.根据下矿层开采后引起的上覆岩层冒落带、裂隙带及弯曲下沉带("三带")的赋存状态,如果上矿层位于冒落带范围之内,其整体性必然遭到严重破坏,在现有开采技术条件下不可能进行回采;如果上矿层位于裂隙带以上,虽然矿层受力生成裂隙,但仍能保持矿层的整体性,原则上是可采的.为了开采的可靠性和安全性,下层开采形成的冒落带顶部边界应与上层的底板具有一定的安全距离,防止"蹬碴"作业和采矿机械陷落等不安全生产状况发生.
상행개채적가행성주요취결우하광층개채후,인기상복암층이동、변형화파배시부파배료상광층정체성.근거하광층개채후인기적상복암층모락대、렬극대급만곡하침대("삼대")적부존상태,여과상광층위우모락대범위지내,기정체성필연조도엄중파배,재현유개채기술조건하불가능진행회채;여과상광층위우렬극대이상,수연광층수력생성렬극,단잉능보지광층적정체성,원칙상시가채적.위료개채적가고성화안전성,하층개채형성적모락대정부변계응여상층적저판구유일정적안전거리,방지"등사"작업화채광궤계함락등불안전생산상황발생.
The feasibility of ascending mining mainly depends on the seam mining,cause overlying strata movement and deformation and destruction is destroyed on seam integrity. According to the next seam mining caused by overburden caving zone,fissure zone and bend subsidence zone( the 〞three zones〞)occurrence state,if the seam is located in caving zone range,its integrity will badly damage,the existing mining technical conditions impossible stoping;if the seam is located in the fissure zone above,although the seam stress forma-tion fracture,but can still keep seam integrity,in principle is the recoverable. The lower the formation of mining caving zone top bounda-ry should be and upper floor has a certain distance,prevent〞tic dross〞 homework,mining machinery depression canˊt safety production situation for reliability and safety of mining.