自燃
The isolated island working face is surrounded with the goaf and its Surrounding coal column and goaf have a tendency of spontaneous combustion.
孤島綜放工作面四周均與采空區相連，其四周煤柱和工作面采空區易于出現自燃發火。
Combined with coal characteristics in goaf of fully mechanized top-coal caving, determinant criteria and methods of hazard zone in goaf are determined by theory of coal spontaneous combustion zone.
本論文結合綜放面采空區浮煤自然發火的特點，運用煤自燃危險區域判定理論，确定了采空區自燃危險區域的判定條件和方法步驟。
It proves that using the traditional BP network can distinguish the rand of spontaneous combustion fatalness through the validated result.
通過驗證結果發現：采用傳統的BP網絡即可滿足煤層自燃等級的劃分。
The effect to prevent the spontaneous combustion in Y-type ventilation goaf is obvious at the air in side.
在進風側向采空區注氮，對于防止Y形通風采空區自燃效果明顯。
Detection of Spontaneous Combustion Indication Gas of Coal.
煤的自燃指标氣體檢測。
News reports said only this mobile phone is spontaneous combustion, but no further details revealed.
新聞報道中隻是說這部手機是“自燃”，但是沒有進一步透露詳情。
And stu***d the index gases created during coal spontaneous combustion, and gained the relation between the consistency of index gases and the temperature.
研究了煤氧化自燃條件下産生的指标性氣體，給出了生成指标性氣體的濃度與溫度的關系；
Coal spontaneous combustion seriously threats the safety of coal industry.
煤自燃火災嚴重威脅着煤炭工業的安全。
This theory can be used to explain the phenomenon of “human spontaneous combustion”.
這個理論可以解釋上面所歸納的“人體自燃”現象。
Finally, according to the experiments of Yanzhou coal sample, the results of the numerical simulation on the column coal spontaneous combustion are consistent with the experiments.
最後，以兖州東灘礦煤樣自然發火實驗為基礎，對圓柱形煤樣自燃過程進行數值模拟，其結果與實驗基本一緻。
However the study of the spontaneous combustion of coal seam causing surface subsidence deformation is very little, so the paper tries to study the problem.
然而煤層自燃引起的地表移動變形研究在國内外涉及很少，為此本論文對該問題進行了一定的探索和嘗試。
But as the car fuel to the fire, the main reason is the car spontaneous combustion.
而燃油作為汽車上最容易起火的物質，是汽車自燃的主要原因。
There are more than 56% of mines in our country exist seams spontaneous combustion danger, seams spontaneous combustion fire serious influences coal safety production.
我國有56％以上的礦井存在煤層自然發火危險，煤炭自燃火災嚴重影響煤炭的安全生産。
Based on this theory, the boundary of coal layer spontaneous combustion area in a coalfield in northwest China is determined by high-precision magnetic measurement.
煤層自燃後産生“熱剩磁”，基于這一理論，運用地面高精度磁測在靈武某煤田對煤田自燃區的邊界範圍進行圈定。
The main reason of coal spontaneous combustion is interaction between surface activity structure of coal and oxygen.
煤自燃主要是由于煤表面活性結構與氧之間相互作用的結果。
The reason of the spontaneous combustion at fully mechanized workface with top caving are analyzed. The comprehensive preventing measures are elaborated. The good effect is obtained.
對綜采放頂煤工作面自燃發火的原因進行了分析，闡述了所采取的綜合性預防措施，及取得了良好的效果。
The paper summed up and provided the comprehensive fire-prevention measures for preventing spontaneous combustion, which can be carried out effectively and guarantee coal production run smoothly.
本文總結并提出采用綜合防滅火措施，落實到位，嚴格管理，一定能有效地預防自燃發火，保證掘采工作的順利進行。
To enhance the efficiency of mine fire control, the technology of three-phase foam for preventing spontaneous combustion of coal in goaf was developed.
針對目前煤礦防滅火技術與材料存在的一些不足，研制了一種用于防治采空區煤炭自燃的三相泡沫材料。
Finally based on the analysis of heat effect during tests, the mechanism of spontaneous combustion of coal is discussed.
最後，通過煤炭低溫吸氧過程的熱效應分析，對煤炭自燃機理進行了探讨。
The spontaneous combustion of coal of gob is one of the major calamities, which seriously influences safety production of mine.
采空區浮煤自燃是煤礦的主要災害之一，嚴重影響了煤礦的安全生産。
|spontaneous ignition/self-ignition/catacausis;[化學]自燃
自燃（Spontaneous Combustion）是指物質在沒有外部明火或熱源直接作用下，因内部化學反應、生物活動或物理作用蓄積熱量，最終達到燃點并引發燃燒的現象。這一過程通常與物質的自熱性、氧化反應速率及散熱條件密切相關。
英國消防協會統計顯示，約12%的倉庫火災由自燃引發。防控需重點關注物料堆放規範（如控制堆高、保持通風）和溫度監測技術。美國職業安全與健康管理局（OSHA）建議對易自燃物質實施隔離儲存并配備自動滅火系統。
參考資料：
“Spontaneous combustion”（自燃）指物質在沒有外部火源直接作用的情況下，因内部化學或生物反應産生的熱量逐漸積累，最終達到燃點而引發的自行燃燒現象。
具體解釋：
詞義構成
發生條件
需同時滿足：
常見場景
科學原理公式
熱量積累速率需大于散失速率，即：
$$
frac{dQ{text{gen}}}{dt} > frac{dQ{text{loss}}}{dt}
$$
其中 $Q{text{gen}}$ 為反應産熱，$Q{text{loss}}$ 為環境散熱。
注意：自燃常被誤認為超自然現象，實則為科學可解釋的放熱反應失控過程。預防需控制物質濕度、堆積密度及通風條件。
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