不同液面高度陶坛火燃烧行为及破裂规律试验研究  

Experimental study on combustion characteristics and fracture rules of pottery jar with different liquid level

作　　者：王晨阳 万景明 王晨 范韬 Wang Chenyang;Wan Jingming;Wang Chen;Fan Tao(State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei Anhui 230026,China;China Academy of Safety Science and Tecnology,Beijing 100012,China)

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,安徽合肥230026 [2]中国安全生产科学研究院,北京100012

出　　处：《消防科学与技术》2025年第3期320-328,共9页Fire Science and Technology

基　　金：白酒陶坛贮存酒库火灾特性与惰性气体(二氧化碳)灭火技术装备研究项目(MTGF2023008);国家资助博士后研究人员计划(GZC20232521);安徽省自然科学基金青年项目(2408085QE152)。

摘　　要：本文开展了不同液面高度下的陶坛火试验,阐明了火焰形态的演变规律,由最初的蓝色双峰状演变为黄色锥形火焰,根据质量损失速率区分其燃烧阶段。发现陶坛火在稳定燃烧阶段出现的泄漏燃烧现象,其外部火焰出现的典型位置为最大肚宽处。统计了不同液面高度陶坛破裂时间,揭示了裂纹在坛壁面上的发展规律,坛口位置首先出现裂纹随后沿坛壁向下。研究结果表明,随着液面高度的增大,陶坛壁面出现裂纹的概率降低。其中,液面高度26、27 cm陶坛壁面出现裂纹时坛口位置处的拉应力在8~17 MPa;液面高度28、29、30 cm陶坛壁面出现裂纹时坛口位置处的拉应力则达到30 MPa以上;大陶坛试验在坛口温差18.8℃时首次发生破裂,其拉应力为5.1 MPa。This article conducted pottery jar fire tests at different liquid level heights,elucidating the evolution of flame morphology from the initial blue bimodal shape to a yellow conical flame,and distinguishing its combustion stages based on the rate of mass loss.The leakage combustion phenomenon observed during the stable combustion stage of the pottery jar fire was found,and the typical location where the external flame appeared was at the maximum belly width.The fracture time of ceramic jars with different liquid levels was calculated,revealing the development pattern of cracks on the jar wall.Cracks first appeared at the jar mouth and then flowed down along the jar wall.The research results indicate that as the liquid level increases,the probability of cracks appearing on the ceramic jar wall decreases.Among them,when cracks appear on the wall of the ceramic jar at a liquid level of 26,27 cm,the tensile stress at the mouth of the jar is 8~17 MPa;When cracks appear on the walls of ceramic jars with liquid levels of 28,29,30 cm,the tensile stress at the mouth of the jar reaches over 30 MPa;The large pottery jar test broke for the first time at a temperature difference of 18.8℃at the mouth,with a tensile stress of 5.1 MPa.

关 键 词：陶坛 破裂燃烧 液面高度 破裂应力 

分 类 号：TU998.1[建筑科学—市政工程] TS261[轻工技术与工程—发酵工程]