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希杰尔琴斯克采石场开采节理发育、强度不同的玢岩,为了实现无废石生产,采取了提高石料工艺质量的技术措施。玢岩呈层状,倾角陡,中等块度构造,强度60～200兆帕。245、235和220米的开采水平,以临时线开拓,年产实方石块34.5～38.0万米~3。采石场采用工作线平行移功的连续纵-横开采法。220米水平台阶高度为15米,235和245水平为10米。损失率(包括破碎筛分厂的破碎损失)达20％;不合格大块产率17％。碎
Xi Jieerqinqq quarry mining section developed, strength of different rock, in order to achieve non-waste rock production, taken to improve the quality of stone technology measures. Rock is layered, steep dip, moderate block structure, the intensity of 60 ~ 200 MPa. 245,235 and 220 meters of mining level, with a temporary line to open up, with an annual output of solid stone 34.5 ~ 380,000 meters ~ 3. The quarry adopts the parallel vertical-horizontal mining method that the work line moves in parallel. The height of 220 m steps is 15 m and the 235 and 245 levels are 10 m. Loss rate (including crushing plant crushing losses) up to 20%; unqualified bulk yield of 17%. broken