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1956年8月26日午后2时30分,弓长岭通洞区发生了岩石错动现象,在坑道中发现了顶板弯曲、裂缝、掉碴,响声等现象,在采场中也有冒顶,而地表也有塌陷。产生这一现象的原因,不是局部冒顶,也不是冲击,而是岩石发生了移动,岩石发生移动的原因是受到了矿山压力,而引起岩石移动的矿山压力所产生的根本原因却是由于坑内采矿后形成了采空区。随着采矿时间的增长,采空区的范围扩大,会使矿体附近的围岩发生移动,并可能波及到地表。影响通洞区岩石移动的范围、大小、时间及对矿山的危害是与弓长岭通洞区具体的地质条件及开采情况分不开的。岩石移动的现象在开采金属矿床中是不可避免的,必须采取一切措施以减小岩石移动对生产上的直接威胁,今后弓长岭通洞区恢复生产的所有措施,都必须对岩石移动已经造成的安全上的威胁作适当的估计。
At 2:30 p.m. on August 26, 1956, rocks were dislocated in Tongchangling Tongdong District. Roof bending, cracks, ballast and noise were found in the tunnels. Roofs were also found in the stope. There are also collapsed. The reason for this phenomenon is that it is not a local roof but also an impact. Rather, the rock has moved. The reason why the rock is moved is due to the pressure of the mine. The root cause of the pressure of the rock that caused the rock to move is due to the pit mining After the formation of goafs. As the mining time increases, the area of the goaf expands, which will move the surrounding rock near the ore body and may affect the surface. The scope, size, time and the damage to the rock that affect the rock movement in Tongtong area are inseparable from the specific geological conditions and mining conditions in Gongchangling tunnel. The phenomenon of rock movement is inevitable in the exploitation of metal deposits. All measures must be taken to reduce the direct threat to rock production. All measures for the restoration of production in the Gongchangling thoroughfare in the future must take into account the fact that rock movement has been caused Security threats are properly estimated.