本文選題：鉆井井筒　切入點：井壁修復(fù)　出處：《安徽理工大學(xué)》2016年碩士論文

【摘要】：自從上個世紀(jì)八十年代以來,華東地區(qū)深厚表土不穩(wěn)定地層中的立井井壁發(fā)生了大面積的破裂事故,由于治理困難造成了巨大損失。華東地區(qū)煤礦的挖掘現(xiàn)在只能向深部發(fā)展,井筒必將穿越深厚表土的不穩(wěn)定地層,而且井壁的破裂目前仍在繼續(xù)發(fā)生,因此對深厚表土不穩(wěn)定地層中井壁的修復(fù)治理問題需要進(jìn)一步的研究和探索。本文結(jié)合板集煤礦的工程地質(zhì)、水文地質(zhì)以及一些其他因素進(jìn)行分析,通過理論研究以及對內(nèi)套井壁結(jié)構(gòu)進(jìn)行的模型試驗,得出了內(nèi)套井壁方法對破裂井壁修復(fù)的作用,試驗結(jié)果得出內(nèi)套井壁的極限承載力。另外,又運(yùn)用數(shù)值計算分析得出內(nèi)套井壁的安全性。本文是以板集煤礦副井為研究對象,針對板集煤礦副井破裂井壁的破壞情況,采用內(nèi)套井壁對破壞區(qū)域的井壁進(jìn)行修復(fù)治理,并對內(nèi)套井壁的施工方案、修復(fù)情況等進(jìn)行了相關(guān)介紹。通過對內(nèi)套井壁結(jié)構(gòu)的研究,同時結(jié)合板集煤礦副井井壁修復(fù)實際案例,根據(jù)深厚表土不穩(wěn)定地層中的地質(zhì)水文條件,得出了在相同情況下的內(nèi)套井壁法的優(yōu)勢,為將來深厚表土不穩(wěn)定地層中的井壁修復(fù)治理提供了一定的依據(jù)。
[Abstract]:Since the eighties of the last century, the shaft lining in the unstable strata of deep topsoil in East China has been broken up in a large area, resulting in huge losses due to the difficulties of harnessing. The excavation of coal mines in East China can only develop to the deep now. The wellbore is bound to pass through the unstable strata of deep topsoil, and the rupture of the wellbore continues to occur. Therefore, it is necessary to further study and explore the remediation of shaft lining in the unstable strata of deep topsoil. This paper analyzes the engineering geology, hydrogeology and some other factors of Banji Coal Mine. Through theoretical research and model test on lining structure of inner casing, the effect of lining method on repairing broken shaft wall is obtained, and the ultimate bearing capacity of inner casing shaft wall is obtained. The safety of the inner casing shaft wall is obtained by numerical calculation and analysis. This paper takes the auxiliary shaft of Banji coal mine as the research object, aiming at the failure situation of the broken shaft wall of the auxiliary shaft in Banji coal mine, the inner casing shaft wall is used to repair and control the damaged shaft wall in the damaged area. Through the study of the lining structure of the inner casing and the actual case of repairing the auxiliary shaft wall in Banji Coal Mine, according to the geological and hydrological conditions in the unstable formation of deep topsoil, the paper introduces the construction plan and repair situation of the inner casing shaft wall. The advantages of the inner casing method under the same conditions are obtained, which provides a basis for the remediation of the wall in the unstable formation of deep topsoil in the future.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TD262

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本文編號：1663897