【正文】 但由于題中所給數(shù)據(jù)有限，易使模型出現(xiàn)以下缺點：（一）當溫度，壓強，含氧量波動范圍較大時，該模型不再適用。c1=0。主巷道斷面大約為，其他各采煤區(qū)的進風巷、回風巷和掘進巷的斷面大約為，掘進巷道中的風筒直徑為。由附表2數(shù)據(jù)，求得總回風巷平均風速為，平均斷面積為，平均瓦斯?jié)舛葹?，平均煤礦日產(chǎn)量為，則總風量為，瓦斯絕對涌出量為，瓦斯相對涌出量為。局部通風機所在的巷道中至少需要有的余裕風量（新鮮風）才能保證風在巷道中的正常流動，否則可能會出現(xiàn)負壓導致乏風逆流，即局部通風機將乏風吸入并送至掘進工作面。 ventilation。 fitting。名詞解釋（一）采煤工作面：礦井中進行開采的煤壁(采煤現(xiàn)場)。由此可得：。針對上述變量建立非線性規(guī)劃模型，具體建立過程如下：1．設定函數(shù)要想求出最佳總進風量，只需要在滿足各項限制條件的前提下，求出總進風量的最小值即可。第2步:運行程序。導致該模型在更大范圍內(nèi)適用性較差。該模型可以通過觀測風速的變化，得到煤礦瓦斯和煤塵的濃度變化，從而對煤礦的安全情況做出合理的監(jiān)控和預測，確保煤礦生產(chǎn)的安全進行，對于煤礦的管理工作具有重大的現(xiàn)實意義。*(x(5)+*pi*x(6))^*(x(5)+*pi*x(6))+*(25*(x(5)+*pi*x(6)+))^2+*(25*(x(5)+*pi*x(6)+))]。具體實現(xiàn)過程如下：設為總進風巷的風速，為采煤工作面Ⅱ進風巷的風速，為通往采煤工作面Ⅰ進風巷及掘進巷的風速，為采煤工作面Ⅰ進風巷的風速，為掘進巷（的一個分支）的風速，為局部通風機的風速（如無特別說明，風速的單位為）。又若煤礦日產(chǎn)量為，則瓦斯相對涌出量為。注：掘進巷需要安裝局部通風機，其額定風量一般為。關(guān)鍵詞 瓦斯；通風量；擬合；非線性有約束極小問題II甘肅煤炭工業(yè)學校畢業(yè)論文ABSTRACTThe coal mine safety production is one of the focus that concerned by the public, especially under the background that the world is in short of energy and the demand of the coal is increasing continuously, the coal mine safety production is worthy of our better concern, and this is also contributed to build a safe and harmonious society. We find that most accidents should be due to the fire damp explosion or grime explosion, while the gas is unavoidable during the coal mine production. Therefore, the gas and the grime in the coal mine is very dangerous to the safety production, how to detect and control the gas and the grime is the key to make sure of the coal mine safety production.This paper figure out the absolute firedamp(QCH4)and the opposite firedamp(qCH4)in the wind circle lane, and then pare the result with the standard data, then confirm it’s ‘a(chǎn) high gas well’ .According to the monitor data in table 2,stat the times that gas density exceeded normal in each work department and each lane, and this can be seen as the frequency in which the insecurity affairs appeared, the ratio of the frequency and the total monitor times should be the insecurity degree, the insecurity degree of the coal mine is .According to both the actual instance of the coal mine production and the Coal Mine Safety Production Regulations, use the method of interpolation and fitting to resolve this problem. We get the total ventilation of the coal mine and the sums of the ventilation about the two work departments need.Keywords gas。 nonlinear constrained optimization1甘肅煤炭工業(yè)學校畢業(yè)論文目 錄一、問題重述………………………………………………………………1二、模型假設………………………………………………………………2三、模型的建立與求解………………………………………