Based on the multiple problems existing in design of bolting support in Datun mining Area nowadays, the parameters of bolting (cabling) with wire mesh in actual mining...
在综合讨论大屯矿区现用锚网支护设计方法尚存问题的基础上，对厚煤层放顶煤沿底回采巷道的锚网(索)支护参数设计方法进行了全面分析。
This paper analyses the characteristic of bottom ash of fluidized bed boiler in Datun and introduces the experiment results of the bottom ash as fine skeleton of concrete.
对大屯沸渣的基本性能进行了分析研究，并对沸渣作混凝土的细骨料进行试验，结果表明，其在混凝土中应用是可行。
With the mining depth increase in Yaoqiao Coal mine in Datun mine area, various nonlinear mechanics damages are appeared, which can seriously affect the safety production.
大屯矿区姚桥煤矿进入深部开采后，出现各类非线性力学破坏现象，严重影响巷道的正常使用。
With the mining depth increase in Yaoqiao Coal mine in Datun mine area, various nonlinear mechanics damages are appeared, which can seriously affect the safety production.
大屯矿区姚桥煤矿进入深部开采后，出现各类非线性力学破坏现象，严重影响巷道的正常使用。
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