王旭锋,贾俊飞,杨战标,赵万里,王纪尧,杨培举,杨前

• 1:中国矿业大学矿业工程学院
• 2:平顶山天安煤业股份有限公司十一矿
• 3:平顶山天安煤业股份有限公司煤炭开采利用研究院
• 4:平顶山天安煤业股份有限公司朝川矿

摘要(Abstract)：

极松软厚煤层超高巷道采用顶部充填方式控制围岩稳定已取得了显著的技术效果，已有实践表明，顶部充填体强度对支护效果影响重大。为进一步提升该技术的综合经济效益，增加矿井焦煤产出率，提出采用高泡材料进行顶部充填，以减少材料用量和优化支护效果。通过建立超高巷道顶部充填体受力模型，得到了巷道顶部充填体水平及垂直方向的受载强度，确定了顶部充填体所需的强度及变形能；根据不同水灰比、发泡剂含量条件下高泡材料的力学特性，采用数值模拟方法确定了高泡材料的最佳配比，通过工业试验验证了支护效果。研究结果表明，巷道高度为3～6 m时，顶部充填体水平及垂直方向最大受力载荷分别为0.48 MPa和1.37 MPa；巷道高度为6 m时，顶部充填体所需变形能应大于1.17 MPa；将水灰比为3∶1、发泡剂含量为0.03%的充填体充填至巷道顶部，数值模拟及现场的巷道两帮最大位移分别为220 mm和163 mm，满足工作面安全开采要求。研究结果可为类似条件的巷道围岩控制提供借鉴。

关键词(KeyWords)： 极松软厚煤层;超高巷道;高水高泡材料;材料性能;控制效果

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王旭锋,贾俊飞,杨战标,赵万里,王纪尧,杨培举,杨前

DOI: 10.13532/j.jmsce.cn10-1638/td.20230607.001

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