【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(diǎn)：（一）當(dāng)溫度，壓強(qiáng)，含氧量波動(dòng)范圍較大時(shí)，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(jìn)風(fēng)巷、回風(fēng)巷和掘進(jìn)巷的斷面大約為，掘進(jìn)巷道中的風(fēng)筒直徑為。由附表2數(shù)據(jù)，求得總回風(fēng)巷平均風(fēng)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(fēng)量為，瓦斯絕對(duì)涌出量為，瓦斯相對(duì)涌出量為。局部通風(fēng)機(jī)所在的巷道中至少需要有的余裕風(fēng)量（新鮮風(fēng)）才能保證風(fēng)在巷道中的正常流動(dòng)，否則可能會(huì)出現(xiàn)負(fù)壓導(dǎo)致乏風(fēng)逆流，即局部通風(fēng)機(jī)將乏風(fēng)吸入并送至掘進(jìn)工作面。 ventilation。 fitting。名詞解釋（一）采煤工作面：礦井中進(jìn)行開(kāi)采的煤壁(采煤現(xiàn)場(chǎng))。由此可得：。針對(duì)上述變量建立非線性規(guī)劃模型，具體建立過(guò)程如下：1．設(shè)定函數(shù)要想求出最佳總進(jìn)風(fēng)量，只需要在滿足各項(xiàng)限制條件的前提下，求出總進(jìn)風(fēng)量的最小值即可。第2步:運(yùn)行程序。導(dǎo)致該模型在更大范圍內(nèi)適用性較差。該模型可以通過(guò)觀測(cè)風(fēng)速的變化，得到煤礦瓦斯和煤塵的濃度變化，從而對(duì)煤礦的安全情況做出合理的監(jiān)控和預(yù)測(cè)，確保煤礦生產(chǎn)的安全進(jìn)行，對(duì)于煤礦的管理工作具有重大的現(xiàn)實(shí)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(shí)現(xiàn)過(guò)程如下：設(shè)為總進(jìn)風(fēng)巷的風(fēng)速，為采煤工作面Ⅱ進(jìn)風(fēng)巷的風(fēng)速，為通往采煤工作面Ⅰ進(jìn)風(fēng)巷及掘進(jìn)巷的風(fēng)速，為采煤工作面Ⅰ進(jìn)風(fēng)巷的風(fēng)速，為掘進(jìn)巷（的一個(gè)分支）的風(fēng)速，為局部通風(fēng)機(jī)的風(fēng)速（如無(wú)特別說(shuō)明，風(fēng)速的單位為）。又若煤礦日產(chǎn)量為，則瓦斯相對(duì)涌出量為。注：掘進(jìn)巷需要安裝局部通風(fēng)機(jī)，其額定風(fēng)量一般為。關(guān)鍵詞 瓦斯；通風(fēng)量；擬合；非線性有約束極小問(wèn)題II甘肅煤炭工業(yè)學(xué)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(xué)校畢業(yè)論文目 錄一、問(wèn)題重述………………………………………………………………1二、模型假設(shè)………………………………………………………………2三、模型的建立與求解………………………………………