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

作　　者：李志勇[1] 辛民 刘星乐 田向红[1] LI Zhiyong;XIN Min;LIU Xingle;TIAN Xianghong(Xinglongzhuang Coal Mine of Yanzhou Coal Co.,Ltd.,Yanzhou 272000,China;Jinan Coal Science and Technology Research Institute,Jinan 250100,China)

机构地区：[1]兖州煤业股份有限公司兴隆庄煤矿,山东兖州272000 [2]济南煤炭科技研究院,山东济南250100

出　　处：《煤矿安全》2021年第7期79-83,共5页Safety in Coal Mines

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O_(2)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。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 O_(2) 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.

关 键 词：隔离墙 陶粒混凝土 封堵漏风 采空区防火 配合比 

分 类 号：TD752.2[矿业工程—矿井通风与安全]