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瑞典马尔布列格切的柯斯库尔斯库拉矿开采含磷量低的假象赤铁矿(Fe 60—64%)的富矿体。矿体的厚度40—100米,倾角30—45°,矿体沿走向长度约为 350米。矿体和围岩强度低,极不稳定。该砂采用分段崩落法开采。分段高度8米,分段平巷的间距7米,分段平巷的断面为3.5×3.2米。每个分段上掘进两个间距15—20米的盘区平巷,每个平巷都掘进有倾角60—65。的回采横巷。盘区平巷每隔40—50米开凿一条联络巷道,并从联络巷道掘进放矿溜井。分段巷道相互之间用倾斜巷道连接,专为运搬材料、设备及调运自行装运设备和工人交通之用。在回采平巷的顶板中,沿分段的全
The Korskulkula mine in Malbrecht, Sweden, exploits the bauxite-rich bauxite-rich hematite (Fe 60-64%). Ore thickness of 40-100 meters, inclination 30-45 °, along the length of the ore body is about 350 meters. Ore body and surrounding rock strength is low, very unstable. The sand mining using sub-caving method. Sectional height of 8 meters, 7 meters interval sub-lane, sub-section of lanes for the 3.5 × 3.2 meters. Each sub-section of tunneling two 15-20 meters spacing panel lanes, each lane heading angle of 60-65. The mining sideways. Panel Ping Lane every 40-50 meters to dig a contact lane, and from the contact lane tunneling ore handling wells. The sub-roadways are connected to each other by inclined roadways, which are specially designed for carrying materials, equipment and transportation to transport equipment and workers on their own. In the top of the mining lane, along the entire section