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提高阶段崩落采矿法效率的途径之一是增大矿块高度。尽管该原则效果明显,但大多数矿山的矿块高度一般不超过80～90米,国内外仅个别矿山的矿块高度达到150米或更大。通常是在开采一个矿块沿走向与倾斜尺寸均小的矿体时增大矿块高度,这可使矿体下部的采准工程采用尺寸大且用整体混凝土或钢筋混凝土支护的放矿巷道。这还与传统
One of the ways to increase the efficiency of a stage caving mining method is to increase the nugget height. Despite the obvious effect of this principle, the lumps of most mines do not generally exceed 80 to 90 meters in height, and the lumps of individual mines at home and abroad reach a height of 150 meters or more. Generally, when a ore body is being mined, the height of the nugget is increased when the ore body is smaller in size and smaller in inclination, which makes it possible for the mining and mining project under the large ore body to adopt a large-size mining roadway supported by monolithic concrete or reinforced concrete . It’s also traditional