• 中文核心期刊
  • 中国科技核心期刊
  • RCCSE中国核心学术期刊

粉煤灰陶粒混凝土隔离墙的研究与应用

李志勇, 辛民, 刘星乐, 田向红

李志勇, 辛民, 刘星乐, 田向红. 粉煤灰陶粒混凝土隔离墙的研究与应用[J]. 煤矿安全, 2021, 52(7): 79-83.
引用本文: 李志勇, 辛民, 刘星乐, 田向红. 粉煤灰陶粒混凝土隔离墙的研究与应用[J]. 煤矿安全, 2021, 52(7): 79-83.
LI Zhiyong, XIN Min, LIU Xingle, TIAN Xianghong. Research and application of pulverized coal ash ceramsite concrete isolation wall[J]. Safety in Coal Mines, 2021, 52(7): 79-83.
Citation: LI Zhiyong, XIN Min, LIU Xingle, TIAN Xianghong. Research and application of pulverized coal ash ceramsite concrete isolation wall[J]. Safety in Coal Mines, 2021, 52(7): 79-83.

粉煤灰陶粒混凝土隔离墙的研究与应用

Research and application of pulverized coal ash ceramsite concrete isolation wall

  • 摘要: 为解决缓采期间,两端头封堵不严,易造成向采空区的漏风,从而引起采空区遗煤自燃的问题,以3302(下)综放工作面为工程背景,在分析粉煤灰陶粒混凝土力学性能的基础上,得出最适粉煤灰陶粒混凝土配合比,并以此为原料进行了现场应用。实践表明,该粉煤灰陶粒混凝土隔离墙施工简单,速度快,采空区内O2体积分数最终稳定在10%左右,采空区漏风率由20.6%减小至4.9%,减小了采空区遗煤发生自燃的可能性,保证生产安全。
    Abstract: In order to solve the problem of spontaneous combustion of residual coal in goaf caused by air leakage due to loose sealing at both ends during delayed mining. Taking 3302(lower) fully mechanized caving working face as engineering background, based on the analysis of the mechanical properties of fly ash ceramsite concrete, we obtain the optimal proportion of fly ash ceramsite concrete, and take it as the raw material for field application. The practice shows that the construction of the fly ash ceramsite concrete isolation wall is simple and fast, the O2 volume fraction in the goaf eventually stabilized at about 10%, and the air leakage rate of the goaf is reduced from 20.6% to 4.9%, which reduces the natural possibility of the occurrence of residual coal in the goaf and ensures the production safety.
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  • 发布日期:  2021-07-19

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