According to the theory and method of particle flow code in two dimensions (PFC2D), the block caving law of naturalcaving mining method was investigated.
As the first successful introduction of naturalcaving method in domestic nonferrous metal mine, Tongkuangyu mine increases production capacity and reduces production costs.
铜矿峪矿作为国内第一个成功引进自然崩落法技术的有色金属矿山，提高了矿山生产能力，降低了生产成本。
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We are surrounded by a natural playground just perfect for walking, caving, climbing and cycling.