煤与瓦斯突出相似模拟实验材料制备及实验验证  

Preparation of Similar Simulation Experimental Materials for Coal and Gas Outburst and Experimental Verification

作　　者：纪海龙 高魁[1,2] 乔国栋 李亮[1] 李梦娣 王有为 JI Hailong;GAO Kui;QIAO Guodong;LI Liang;LI Mengdi;WANG Youwei(School of Safety Science and Engineering,Ministry of Education,Anhui University of Science and Technology,Huainan 232001,Anhui,China;Key Laboratory of Mine Safety and High Efficient Mining,Ministry of Education,Anhui University of Science and Technology,Huainan 232001,Anhui,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001 [2]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《实验室研究与探索》2024年第12期11-14,33,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(52374179);安徽省自然科学基金项目(2208085ME125);安徽省高校优秀青年人才支持计划项目(gxyq2022016);煤矿深井开采灾害防治技术科技研发平台(安徽理工大学)开放基金项目(DPDCM2204)。

摘　　要：煤与瓦斯突出危险性强、破坏性大,难以开展现场实验研究。室内相似模拟实验是一种安全、有效的研究方法,相似材料配比对突出实验至关重要。以腐殖酸钠为胶结剂,通过相似材料配比实验,研究型煤相似材料物理力学性质与腐殖酸钠质量分数之间的关系,优选出可用于煤与瓦斯突出实验的煤层相似材料质量比为:煤粉(粒径0~1 mm)∶煤粉(粒径1~3 mm)∶腐殖酸钠水溶液(质量分数8%)=9.5∶3.0∶1.0。为了验证相似材料配比的科学性与适用性,基于相似准则,以典型突出事故为原型,利用突出实验装置开展煤与瓦斯突出相似模拟实验。实验结果表明,突出后管道中部煤粉质量占整个管道内煤粉质量的57.48%,管道后部煤粉质量约占5.51%,煤粉呈正态分布,突出孔洞口小腔大,与现场突出事故现象相似,因此该相似材料可以很好地用于煤与瓦斯突出实验。Coal and gas outbursts are highly dangerous and destructive,which makes difficult to conduct on-site experimental research.Indoor similarity simulation experiments are a safe and effective research method,and the proportion of similar materials is crucial for prominent experiments.In this study,sodium humate was selected as the binder.Through similar material ratio experiments,the relationship between the physical and mechanical properties of similar coal materials and the mass fraction of sodium humate was studied.A coal seam similar material that can be used for coal and gas outburst experiments was selected.The composition was coal powder(particle size 0-1 mm)∶coal powder(particle size 1-3 mm)∶sodium humate aqueous solution(mass fraction 8%)=9.5∶3.0∶1.0.To verify the scientificity and applicability of similar material ratios,based on similarity criteria,a coal and gas outburst similarity simulation experiment was conducted using a typical outburst accident as a prototype using an outburst experimental device.After the outburst,the coal powder in the middle of the pipeline accounts for 57.48%of the total coal powder in the pipeline,and the coal powder in the back of the pipeline accounted for about 5.51%.The coal powder shows a normal distribution,with small and large protruding holes,is similar to the phenomenon of on-site outburst accidents.Therefore,this similar material can be well used in coal and gas outburst experiments.

关 键 词：煤与瓦斯突出实验 相似材料 腐殖酸钠 煤粉分布 

分 类 号：X936[环境科学与工程—安全科学]