深立井井壁破裂的力学机理及破裂预测研究
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摘要
分析了深立井井壁破裂的力学机理,研究了深立井井壁的应力分布规律在井壁破裂预测方面的具体运用,结合混凝土井壁的强度准则和矿区地下水下降的规律,建立了立井井壁破裂的预测理论。研究表明:立井井壁破裂的危险位置与发生破裂的具体时间与矿区地下水的沉降规律及季节的变化有密切的关系。最后通过对具体实例的分析,验证了上述理论的正确性和适用性。对工程现场及井壁设计均具有较大的指导意义。
This paper is aimed to study the forecast method for shaft wall rupture. Based on the analysis of shaft in soil and the friction distribution between soil and shaft, shaft rupture mechanism is analyzed and the stress distribution in the dangerous section in shaft is found. The forecast method on shaft rupture time is established using the strength criterion and the one-to-one correspondence relation between the groundwater level around shaft and the stress value at dangerous point in shaft. The result shows that the rupture time of shaft can be forecasted according to the groundwater level and the curve of the temperature value in every month. An example is provided to verify the present theory.
This paper is aimed to study the forecast method for shaft wall rupture. Based on the analysis of shaft in soil and the friction distribution between soil and shaft, shaft rupture mechanism is analyzed and the stress distribution in the dangerous section in shaft is found. The forecast method on shaft rupture time is established using the strength criterion and the one-to-one correspondence relation between the groundwater level around shaft and the stress value at dangerous point in shaft. The result shows that the rupture time of shaft can be forecasted according to the groundwater level and the curve of the temperature value in every month. An example is provided to verify the present theory.
引文
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[3]Yao Zhishu,Yang Junjie,Sun Wenruo.Experimental study on sliding shaft lining mechanical mechanisms under ground subsidence conditions[J].Journal of Coal Science&Engineering,2003,9(1):95~99.
[4]Rejeb,Bruel D.Hydromechanical effects of shaft:sinking at the Sella fields site[J].International Journal of Rock Mechanics&Mine Science,2001,38(1):17~29.
[5]洪伯潜.约束混凝土结构在井筒支护中的研究和应用[J].煤炭学报,2000,25(2):150~154.Hong Boqian.Research and application of confined concrete structure in shaft lining[J].Journal of China Coal Society,2000,25(2):150~154.(in Chinese)
[6]经来旺.立井井壁破裂危险深度的确定[J].煤炭科学技术,2002,30(10):43~46.Jing Laiwang.Study on dangerous cracking depth of mine freezing shaft[J].Coal Science and Technology.2002,30(10):43~46.(in Chinese)
[7]经来旺,刘飞,高全臣,杨作树.表土沉降阶段煤矿立井井壁破裂应力分析[J].岩石力学与工程学报,2004,23(20):3274~3280.Jing Laiwang,Liu Fei,Gao Quanchen,Yang Zuoshu.Rupture stress of shaftwall in mine[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(20):3274~3280.(in Chinese)
[8]高磊.矿山岩石力学[M].北京:机械工业出版社,1987.138~141.Gao Lei.Coal rock mechanics[M].Beijing:Machine Industry Press,1987.138~141.(in Chinese)
[9]李世平.岩石力学简明教程[M].徐州:中国矿业大学出版社,1986.146~149.Li Sipin.Concise Course of Rock Mechanics[M].Xuzhou:China Mineral University Press,1986.146~149.(in Chinese)
[10]陈仲颐,叶书麟.基础工程学[M].北京:中国建筑工业出版社,1991.207~211.Chen Zhongyi,Ye Shulin.Foundation Engineering[M].Beijing:Architecture Industry Press,1991.207~211.(in Chinese)
[11]Robert M.Keorner.Construction and Geotechnical Methods in Foundation Engineering[M].New York:McGraw-Hill Book Company,1984.175~180.
[12]Selvadural A P S.Elsevier Analysis of Soil-Foundation Interaction[M].New York:Scientific Publishing W.1979.346~365.
[13]周维恒.高等岩石力学[M].北京:水利电力出版社,1989.13~25.Zhou Weiyuan.Advanced Rock Mechanics[M].Beijing:China Water Conservancy Hydropower Press,1989.13~25.(in Chinese)
[14]王钧,黄尚瑶,黄歌山,汪旸.中国地温分布的基本特征[M].北京:地震出版社,1990.28~30.Wang Jun,Huang Shangyao,Huang Geshan,Wang Yang.Basic Characteristic of the Earth’s Temperature Distribution in China[M].Beijing:China Earthquake Press,1990.28~30.(in Chinese)
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