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- Study on the contool of top coal depletion ratio in caving roof mining 放顶煤开采顶煤贫化率控制研究
- caving roof mining 放顶煤开采
- Because the increase of mining height in fully-mechinzed coal winning caving roof,it brings convenient and both brings the changing of rock rationlations. 大采高综放工作面由于机采高度的加大,在给工作面生产带来便利的同时,也带来支架与围岩关系的变化。
- fully-mechanized coal winning caving the roof mining 综放开采
- mining height fully-mechanized coal winning caving roof 大采高综放
- Based on the analysis of the survey of 2116 downhill area,provide three kinds of mining plans,finaly, determin the compound roof mining plan is the optimum one. 在分析2116下山区概况的基础上,提出了3种开采方案,最后选定托复合顶板开采为最佳方案。
- fully-mechanized coal winning caving roof face 综放工作面
- The successful applications of controlled blasting technology of false roof mining in Gaozhuang Mine of Pingdingshan Mining Bureau have attained outstanding economical &social benefit. 平顶山矿务局高庄矿的实践应用得出,控制爆破技术在托伪顶开采中的应用是成功的。
- support at fully-mechinzed coal winning caving roof 综放支架
- She and I can't live under the same roof. 她和我不能住在一起。
- The roof is dangerous and could cave in at any time. 屋顶很危险，任何时候都会坍塌。
- Keywords inducation caving roof;RFPA;time-varying effecting;empty; 顶板诱导崩落;RFPA;时变效应;采空区;
- Practice of Prevention of Spontaneous Combustion in Coal Seam liable to Combustion during Mining of Fully -mechanized Caving Roof 综采放顶煤开采在易燃煤层中防止煤层自燃的实践
- The roof of the mine caved in as a result of the explosion. 由于发生爆炸，矿井顶部坍塌了。
- The stone made a dent in the roof of my car. 我的汽车顶让石头砸了个坑。
- Snipers shot at the invaders from the roof tops. 狙击手从房顶上向侵略者射击。
- A hermit used to live in the cave. 一位隐士曾经住在那个山洞里。
- The rain water drips from the roof. 雨水从屋顶滴下来。
- We kindled a firebrand in the cave. 我们在山洞里点燃火把。
- During the gale roof tiles came hurtling down. 在暴风中屋顶的瓦片哗啦啦地落了下来。
