野川煤业薄基岩区顶板突水溃砂防治研究

Research on prevention and control of roof water inrush and sand burst in thin bedrock area of yechuan coal industry

山西煤销集团野川煤业有限公司即将进行3#煤层的回采,通过高密度电法探测、理论分析及数值模拟等方法研究表明,3101工作面的开采受到突水溃砂的严重威胁,为保证3101工作面的安全回采,设计采用探放孔对顶板高压水进行超前疏放,在基岩厚度小于75m的区域采用限高开采技术(采高2.4m),现场应用效果表明,该方法成功的防止了工作面顶板突水溃砂事故的发生,实现了工作面的安全高效回采。

Pin in shanxi coal group,wild sichuan coal co.,LTD.,the upcoming 3#coal seam mining,through the high density resistivity method detection,methods of theoretical analysis and numerical simulation study shows that the mining of 3101 working face serious threat by crushing sand water inrush,in order to ensure safety mining of 3101 working face,the design USES agent put hole was carried out on the roof of high pressure water ShuFang in advance,in the region of the bedrock thickness is less than 75 m mining technology using high limit(2.4 m)mining height are broken and field application effect shows that the method is successful to prevent the roof water inrush sand collapse accidents,to achieve the safe and efficient mining of working face.