本文選題：井筒破壞 + 地面沉降��； 參考：《安徽理工大學》2017年碩士論文

【摘要】：深厚表土層中煤礦井筒的變形破壞是黃淮地區(qū)普遍存在的一種礦山工程地質(zhì)災害,而井筒作為煤礦中最重要的井巷工程,肩負著煤礦整個生產(chǎn)系統(tǒng)的安全保障,其對煤礦的重要性不言而喻。近年來皖北礦區(qū)已有多個煤礦出現(xiàn)過非采動條件下不同程度的井筒變形或破壞現(xiàn)象,在給煤礦造成巨大經(jīng)濟損失的同時也給煤礦安全生產(chǎn)帶來嚴重威脅。因而針對井筒的變形破壞這一工程問題開展相應的研究不僅具有理論價值,更具有重要的實際應用意義。臨渙礦區(qū)任樓煤礦副井井壁自發(fā)生變形破壞后已嚴重干擾煤礦的正常生產(chǎn)。為弄清該礦副井井壁變形破壞機理,并在此基礎(chǔ)上給出適當?shù)闹卫泶胧?本文先從任樓礦副井變形破壞的特征入手,通過現(xiàn)場實測、理論分析與數(shù)值模擬等方法,開展相關(guān)研究,取得主要成果如下:(1)基于任樓礦副井周邊松散層地質(zhì)及水文地質(zhì)條件的研究,分析了工業(yè)廣場地面水源井取水及地下開采等活動造成的松散含水層水位及工業(yè)廣場與副井四周地面沉降的變化情況,研究了松散含水層失水與地面沉降二者之間的內(nèi)在聯(lián)系,給出了副井井壁變形破壞機理的理論分析;(2)構(gòu)建了任樓礦副井變形破壞的工程地質(zhì)模型,借助數(shù)值模擬計算的結(jié)果,分析了松散層失水與井壁最大豎直附加應力的相關(guān)性,并得到了具體的擬合公式。而且數(shù)值模擬的研究結(jié)果也驗證了副井變形破壞機理的理論分析結(jié)果;(3)根據(jù)井筒變形破壞的已有的治理方法、技術(shù)及經(jīng)驗,結(jié)合任樓礦副井變形破壞的實際情況,對副井實施了槽鋼井圈加固和注漿加固等工程修復的治理措施,有效緩解了井壁豎直附加應力的增大,取得了良好的治理效果。此外,還從礦區(qū)水源井的取水區(qū)域、取水層位及礦井水資源的利用等角度,提出了防止地層疏水沉降的治本建議。
[Abstract]:The deformation and failure of coal mine shaft in deep topsoil is a kind of mine engineering geological hazard that exists widely in Huang-Huai area. As the most important shaft engineering in coal mine, wellbore shoulders the safety guarantee of the whole production system of coal mine. Its importance to coal mines is self-evident. In recent years, there have been many coal mines in the north of Anhui province that have been deformed or destroyed in different degrees under non-mining conditions, which not only caused huge economic losses to coal mines, but also brought serious threats to the safety of coal production. Therefore, it is not only of theoretical value, but also of important practical significance to study the engineering problem of wellbore deformation and failure. Since the deformation and destruction of the auxiliary shaft wall in Renlou Coal Mine, Linhuan Coal Mine, it has seriously interfered with the normal production of the coal mine. In order to make clear the mechanism of deformation and failure of auxiliary shaft in this mine, and on the basis of this, the paper begins with the characteristics of deformation and failure of auxiliary shaft in Renlou Mine, and through field measurement, theoretical analysis and numerical simulation, etc. The main results obtained are as follows: 1) based on the study of the geological and hydrogeological conditions of the loose layer around the auxiliary well of Renlou Mine, In this paper, the variation of water level of loose aquifer and the ground subsidence around industrial plaza and auxiliary well caused by water intake and underground mining of ground water source well in Industrial Square are analyzed, and the internal relation between loss of water in loose aquifer and ground subsidence is studied. In this paper, the theoretical analysis of deformation and failure mechanism of auxiliary shaft wall is given. The engineering geological model of deformation and failure of auxiliary well in Renlou Mine is constructed. With the help of the results of numerical simulation, the correlation between the loss of water in loose layer and the maximum vertical additional stress of shaft wall is analyzed. The specific fitting formula is obtained. Moreover, the results of numerical simulation also verify the theoretical analysis of deformation and failure mechanism of auxiliary wells. According to the existing methods, techniques and experiences of shaft deformation and failure, combined with the actual situation of deformation and failure of auxiliary wells in Renlou Mine, The treatment measures of channel steel ring reinforcement and grouting reinforcement are carried out for the auxiliary well, which effectively alleviates the increase of vertical additional stress of shaft wall and obtains good treatment effect. In addition, the author puts forward some suggestions to prevent the formation hydrophobic subsidence from the point of view of the area of water intake, the level of water intake and the utilization of mine water resources in the mining area.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD321

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