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- This is the base to explain the relation between the gas outburst and the broken coal seam when uncovering coal in crosscut rationally. 从而很好地解释了石门揭煤条件下煤体破碎程度与突出的关系。
- Keywords uncovering coal in crosscut;outburst risk;outburst prevention measures; 石门揭煤;突出危险;防突措施;
- uncovering coal in crosscut 石门揭煤
- It is found that creeping occurs to coal in certain situation because the stress on uncovering coal plane has changed from three-dimensional stress to dichroic. 由于揭开的煤层裸露面由原来的三向受力变为二向受力,在合适的条件下煤体会产生蠕变。
- When advancing and uncovering coal in roadway, better construction method is vibration shot, metal framework, borehole bleed-off and hydraulic hole, of which vibration shot is principal. 井巷掘进揭煤时,较好的施工方法是震动放炮,金属骨架,钻孔排放和水力冲孔,尤以震动放炮为主。
- Practice of uncovering coal in high-gas and gas outburst coal mine 高瓦斯有突出危险性矿井的揭煤实践
- Do we have enough coal in for winter? 家里过冬用的煤够了吗?
- The company is mining coal in the south of country. 该公司正在国家的南部开采煤矿。
- Explorers have discovered coal in Antarctica. 探险家们在南极发现了煤矿。
- Do we have enough coal in for winter ? 冬季用的煤我们备足了吗?
- There is plenty of coal in this area. 这个地区有丰富的煤。
- Although the engineer shoveled the coal in as fast as he could, the steam engine would go no faster. 虽然火车司炉尽快地将煤铲进炉子，但火车一点也没加快。
- They banked out the coal in default of means for removing it. 他们因缺少搬运工具而把开出的煤堆起来。
- The consumption of coal in that factory is five tons a day. 那个工厂每天的煤耗达五吨。
- We burn coal in the stove to keep the living room warm. 我们在火炉里烧煤,以保持客厅温暖。
- At one time they used to mine coal in these valleys. 从前他们在这些峡谷中采煤。
- Standard plants burn coal in a boiler at atmospheric pressure. 一个标准的电厂，是在平常的大气压下于锅炉中燃烧煤矿。
- There were red coals in the grate. 壁炉里有烧红的煤块。
- "I would like the box of coal in the cellar," replied Perina. 梨娃回答说：“我要地下室里的那个装煤的箱子。”
- Australia actually exports the most diamonds and coal in the world! 澳大利亚是世界上出口钻石和煤炭最多的国家。
