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- coal seams outburst risk 煤层突出危险性
- Application shows that the method is simple, reliable and applicative, and is a new method for risk prediction of coal seams outburst. 实例应用表明，该方法计算简便，预测结果可靠，实用性强，为煤层突出危险性预测提供了一种新方法。
- This method can solve a lot of unascertained problems in risk prediction method of coal seams outburst, and also can analyze the unascertained problem quantitatively. 该方法适用于解决煤层突出危险性预测过程中诸多因素的不确定性问题，还能对其进行定量分析。
- Methane Drainage Technology Used in Fully-mechanized Faces of Coal Seam with High Outburst risk 高突煤层综放工作面瓦斯抽放技术
- outburst risk coal seam 突出煤层
- Brief Discussion on Sensitivity of Prediction Index K_1 of Coal Seam Outburst Hazard 谈煤层突出危险性预报指标K_1的敏感性
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
- Outburst prevention technique of excavating in coal seam will be directly concerned colliery safety production and excavates taking over. 摘要突出煤层煤巷掘进防突直接关系到煤矿的安全生产和采掘接替。
- 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。
- Little faults in coal seam are important for coal and gas outburst prevention and control,and water outburst prevention and control. 煤层小断层对矿井煤与瓦斯突出及矿井突水防治具有重要的实际意义。
- LIU Wengang, JIANG Yaodong, ZH0U Hongwei, et al.Experimental study on outburst proneness coal seam of meso character and crack destabilization[J]. 刘文岗;姜耀东;周宏伟;等.;冲击倾向性煤体的细观特征与裂纹失稳的试验研究[J]
- It used draining while mining and light &middle pressure water injection in coal seam, those completely eliminated the danger of coal and gas outburst. 在生产过程中，采用边采边抽和浅孔中压注水措施，完全消除了工作面的突出危险性。
- The article analyzes the cause of coal and gas outburst in heading face and introduces ways,control gas outburst in heading faces with three-soft coal seam. 分析了煤巷掘进头发生煤与瓦斯突出的原因,介绍了“三软”煤层高突区域煤巷掘进头瓦斯综合治理的途径和措施。
- Authors introduce a fully mechanized mining technology with great mining length, height and dip angle adopted by No.12 colliery of Pingdingshan Coal Group under the condition of outburst coal seam. 本文介绍了平煤集团十二矿在高突条件下,进行的大采长、大采高、大倾角综采开采技术,采取的措施和取得的经验,并提出了有待解决的技术问题。
- The Gaussian curvature of No.3 coal seam in Qinshui basin is calculated. 计算了沁水盆地3号煤层的高斯曲率。
- Fuzzy Comprehensive Judgments for Face Coal and Gas Outburst Risk 工作面煤与瓦斯突出危险性的模糊综合评判
- Factors affected coal seam permeability change and its law is analyzed. 分析了煤层透气性变化的影响因素及变化规律。
- The outburst-proneness of 6# coal seam are studied with five indexes. 采用5种指标对该矿6%23煤层冲击倾向性进行了实验研究。
