本文選題：沖擊地壓 + 微震�。� 參考：《內(nèi)蒙古科技大學(xué)》2015年碩士論文

【摘要】：隨著礦井開采深度的增大，沖擊地壓已經(jīng)成為嚴(yán)重制約礦井安全生產(chǎn)的主要原因，在一定程度上對礦工的生命安全，對礦井的安全高效生產(chǎn)已經(jīng)形成了嚴(yán)重的威脅，本文主要針對龍煤南山礦的22采區(qū)沖擊地壓的預(yù)警進(jìn)行研究，先通過學(xué)習(xí)總結(jié)國內(nèi)研究沖擊地壓的先進(jìn)理論如強(qiáng)度理論剛度理論等，學(xué)習(xí)沖擊地壓發(fā)生的內(nèi)在原因，然后再去研究外部因素對沖擊地壓的影響的作用，綜合研究分析各種影響沖擊地壓發(fā)生的原因，通過理論研究實(shí)驗(yàn)驗(yàn)證，再運(yùn)用沖擊地壓預(yù)警研究的相關(guān)技術(shù)方法相結(jié)合，對龍煤南山礦22采區(qū)的22135工作面進(jìn)行沖擊危險(xiǎn)區(qū)域預(yù)警。 本文通過理論分析與現(xiàn)場試驗(yàn)相結(jié)合，多角度考慮影響因素，通過運(yùn)用多種先進(jìn)的預(yù)測方法對南山礦進(jìn)行研究的，先運(yùn)用綜合指數(shù)法針對全礦井的地質(zhì)進(jìn)行研究分析發(fā)現(xiàn)，全礦井大部分區(qū)域都具有中等或強(qiáng)沖擊的危險(xiǎn)，并將危險(xiǎn)區(qū)域繪出，而深度開采的22采區(qū)是具有強(qiáng)沖擊危險(xiǎn)的區(qū)域，然后分析開采技術(shù)條件對沖擊地壓的影響，發(fā)現(xiàn)三個(gè)沖擊危險(xiǎn)工作面如22135等工作面，然后對22135工作面在回采過程中進(jìn)行數(shù)值模擬研究分析，得出具有較高的原巖應(yīng)力區(qū)域及在工作面回采過程中應(yīng)力重新分布規(guī)律，并劃分出回采過程中的5個(gè)應(yīng)力集中區(qū)，，然后運(yùn)用微震監(jiān)測數(shù)據(jù)進(jìn)行研究發(fā)現(xiàn)，上述危險(xiǎn)區(qū)域的微震能量普遍超標(biāo)，并通過對以往沖擊事件發(fā)生時(shí)能量都在105J左右，因此以105J為一個(gè)臨近值，然后通過電磁輻射方法對危險(xiǎn)區(qū)域進(jìn)行進(jìn)一步的研究，研就發(fā)現(xiàn)對22135上巷下幫20-120m，下巷上幫20-500m的監(jiān)測范圍各10個(gè)班的電磁輻射強(qiáng)度監(jiān)測數(shù)據(jù)進(jìn)行統(tǒng)計(jì)，電磁輻射強(qiáng)度平均值上巷24.8mv，下巷25.6mv，臨界值為24.8×1.5=38mv，22135下巷中部區(qū)域電磁輻射強(qiáng)度值一直處于比較大的狀態(tài)，22135工作面回采期間可以參考此臨界值，然后運(yùn)用鉆削的方法對沖擊危險(xiǎn)區(qū)域進(jìn)行研究，其數(shù)據(jù)表明大部分區(qū)域平均鉆屑量和最大鉆屑量均超過臨界值，說明下巷的應(yīng)力很大，確定了沖擊危險(xiǎn)源，并采取卸壓措施。
[Abstract]:With the increase of mine mining depth, impact ground pressure has become the main reason of restricting mine safety production seriously. To a certain extent, it has posed a serious threat to the safety of miners and the safety and efficiency of mine production. This paper mainly studies the early warning of rock burst in No. 22 mining area of Longmei Nanshan Mine. Firstly, by studying and summarizing the advanced theories of shock ground pressure in China, such as strength theory and stiffness theory, we study the internal causes of impact ground pressure. Then we study the effect of external factors on the impact of shock ground pressure, comprehensively study and analyze the causes of the impact of impact ground pressure, through theoretical research and experimental verification, and then use the relevant technical methods of early warning research of shock ground pressure to combine. The 22135 face in No. 22 mining area of Longmei Nanshan Coal Mine was forewarned of impact hazard area. In this paper, through the combination of theoretical analysis and field test, the influence factors are considered from many angles, and through the use of various advanced forecasting methods to study Nanshan Mine, the comprehensive index method is first used to study and analyze the geology of the whole mine. Most areas of the whole mine have the risk of moderate or strong impact, and the dangerous area is mapped out, while the 22 mining area of deep mining is the area with strong impact risk, and then analyzes the impact of mining technical conditions on the impact of ground pressure. Three percussive working faces, such as 22135 and so on, are found out, and then the numerical simulation analysis of 22135 face is carried out in the process of mining, and the law of stress redistribution in the mining process is obtained, which has higher original rock stress area. Five stress concentration areas in the process of mining are divided, and the microseismic monitoring data are used to study the results. It is found that the microseismic energy of the above dangerous areas is generally over the standard, and the energy of the previous impact events is about 105J. Therefore, taking 105J as an adjacent value, and then making further study on the dangerous area by electromagnetic radiation method, it is found that the monitoring data of electromagnetic radiation intensity of 10 classes in the monitoring range of 22135 upper roadway and 20 to 500m are statistically analyzed. The average electromagnetic radiation intensity is 24.8 MV in the upper roadway and 25.6 MV in the lower roadway. The critical value is 24.8 脳 1.538 MV / 22135. The electromagnetic radiation intensity in the middle area of the roadway is always in a relatively large state. Then the method of drilling is used to study the perilous area of impact. The data show that the average amount of cuttings and the maximum amount of drilling chips in most areas exceed the critical value, which shows that the stress in the lower roadway is very large, and the impact hazard source is determined and the pressure relief measures are taken.
【學(xué)位授予單位】：內(nèi)蒙古科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD324

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本文編號：2055831