松散岩块侧限压缩模量的试验研究
|
摘要
通过对松散岩块进一步的压实试验研究,得出了松散岩块的侧限压缩模量与孔隙率及岩块抗压强度之间的关系。研究结果表明,松散岩块的侧限压缩模量与孔隙率之间既可用指数关系也可用幂函数关系来描述,二者都具有很高的相关系数。同时,岩块强度与压缩模量之间呈线性关系,回归所生成的直线方程斜率和截距均与孔隙率有很强的相关性。最后得出压缩模量与岩块强度、孔隙率之间的统一关系式。
The compressive modulus,which characterizes the deformation behaviors of loose rock blocks under confining constraint,is related with many factors,such as the pore ratio,rock strength and so on. Among them,the pore ratio is one of the most important factors. Through testing,the relationship between compressive modulus and pore ratio is revealed. The testing results show that the compressive modulus increases fast with the decrement of pore ratio. By regression analysis,the relationship between them can be described by either exponent or power function,both with very high correlation coefficient more than 0.9. The testing results indicate that the compressive modulus is approximately linearly related with rock strength within a certain rang of rock strength of 15～45 MPa and increases with rock strength. The further regression analysis suggests that both the slopes and the intercept of the regressive linear function are closely related to pore ratio. The regressive slope increment increases with the decrement of pore ratio and their relationship can be described by either the exponent function or the power function,both with very high correlation coefficient more than 0.9. The relationship between intercept and pore ratio can be described by the polynomial function with a correlation coefficient more than 0.9. At last,the relationship among compressive modulus,rock strength and pore ratio can be written as a uniform function. By comparing the two functions containing the parameter of pore ratio,obtained by two different ways with and without considering rock strength,a certain unification is found between the two functions.
The compressive modulus,which characterizes the deformation behaviors of loose rock blocks under confining constraint,is related with many factors,such as the pore ratio,rock strength and so on. Among them,the pore ratio is one of the most important factors. Through testing,the relationship between compressive modulus and pore ratio is revealed. The testing results show that the compressive modulus increases fast with the decrement of pore ratio. By regression analysis,the relationship between them can be described by either exponent or power function,both with very high correlation coefficient more than 0.9. The testing results indicate that the compressive modulus is approximately linearly related with rock strength within a certain rang of rock strength of 15～45 MPa and increases with rock strength. The further regression analysis suggests that both the slopes and the intercept of the regressive linear function are closely related to pore ratio. The regressive slope increment increases with the decrement of pore ratio and their relationship can be described by either the exponent function or the power function,both with very high correlation coefficient more than 0.9. The relationship between intercept and pore ratio can be described by the polynomial function with a correlation coefficient more than 0.9. At last,the relationship among compressive modulus,rock strength and pore ratio can be written as a uniform function. By comparing the two functions containing the parameter of pore ratio,obtained by two different ways with and without considering rock strength,a certain unification is found between the two functions.
引文
1缪协兴,茅献彪,胡光伟.岩石(煤)的碎胀与压实特性研究[J].实验力学,1997,12(3):394～399
2郭庆国.粗粒土的工程特性及应用[M].郑州:黄河水利出版社,1983
3赵彭年.松散介质力学[M].北京:地震出版社,1995
4He t temaMHH,N iepceDV,W olfK.Amicrostru cturalan al ysi softhecomp ac tionofcla ystoneaggr eg ates athightemperatures[J].InternationalJ ournalofRockMec hanicsandMiningSciences,1999,36(1):57～68
5MarfilRafaela,SchererMichael,TurreroMar韆Jes鷖.Di ageneticp rocessesinf luencing po rosityinsa ndst onesfromtheTriassicBunts an dsteinoftheIberianRange,Spain[J].SedimentaryGeology,1996,105(3/4):203～219
6LuoX,VasseurG ,PouyaA,etal.Ela stoplasticd ef ormati onofp orousme di aap pliedtoth em odellingof co mpact ionatbasinscale [J].MarineandPetroleumGeology,1998,15(2):145～162
7Schneide rF,Potdevi nJL,WolfS,eta l.M echanica landchemic alcom pac tionmodelfo rsedi mentarybasinsimulators [J].Tectono-physics,1996,263(1～4):307～317
8PoppT,Ke rnH. Ultrasonicwave velocities,g asp ermeabil it yandpor osi tyinnatu rala ndgranularrocks alt[J].Physi cs andChemistryoftheEarthVolume,1998,23(3):373～378
9张振南,茅献彪,郭广礼.松散岩块压实变形模量的试验研究[J].岩石力学与工程学报,2003,22(4):578～581
10孔宪京,贾革续,邹德高等.微小应变下堆石料的变形特性[J].岩土工程学报,2001,23(1):32～37
11油新华,汤劲松.土石混合体野外水平推剪试验研究[J].岩石力学与工程学报,2002,21(10):1537～1540
12刘萌成,高玉峰,刘汉龙等.堆石料变形与强度特性的大型三轴试验研究[J].岩石力学与工程学报,2003,22 (7):1104～1111
13LeiteM H, FerlandF.D eterminatio nofuncon finedcompr essives tr engtha ndYoung's mo dulusofporo usmaterialsbyindentationtests[J].EngineeringGeology,2001,59(3/4):267??80
14Lersow Mi c hael.D ee psoilc ompactionas ame th odofgroundimp ro vement and tostab iliz ationo fw astesandslopeswithdanger ofl iquefac ti on,determin ing themo dulusofd eformation an dshea rstrengthparametersoflooserock[J].WasteManagement,2001,21(2):161～174
15陈仲颐,周景星,王洪瑾.土力学[M].北京:清华大学出版社,1994
2郭庆国.粗粒土的工程特性及应用[M].郑州:黄河水利出版社,1983
3赵彭年.松散介质力学[M].北京:地震出版社,1995
4He t temaMHH,N iepceDV,W olfK.Amicrostru cturalan al ysi softhecomp ac tionofcla ystoneaggr eg ates athightemperatures[J].InternationalJ ournalofRockMec hanicsandMiningSciences,1999,36(1):57～68
5MarfilRafaela,SchererMichael,TurreroMar韆Jes鷖.Di ageneticp rocessesinf luencing po rosityinsa ndst onesfromtheTriassicBunts an dsteinoftheIberianRange,Spain[J].SedimentaryGeology,1996,105(3/4):203～219
6LuoX,VasseurG ,PouyaA,etal.Ela stoplasticd ef ormati onofp orousme di aap pliedtoth em odellingof co mpact ionatbasinscale [J].MarineandPetroleumGeology,1998,15(2):145～162
7Schneide rF,Potdevi nJL,WolfS,eta l.M echanica landchemic alcom pac tionmodelfo rsedi mentarybasinsimulators [J].Tectono-physics,1996,263(1～4):307～317
8PoppT,Ke rnH. Ultrasonicwave velocities,g asp ermeabil it yandpor osi tyinnatu rala ndgranularrocks alt[J].Physi cs andChemistryoftheEarthVolume,1998,23(3):373～378
9张振南,茅献彪,郭广礼.松散岩块压实变形模量的试验研究[J].岩石力学与工程学报,2003,22(4):578～581
10孔宪京,贾革续,邹德高等.微小应变下堆石料的变形特性[J].岩土工程学报,2001,23(1):32～37
11油新华,汤劲松.土石混合体野外水平推剪试验研究[J].岩石力学与工程学报,2002,21(10):1537～1540
12刘萌成,高玉峰,刘汉龙等.堆石料变形与强度特性的大型三轴试验研究[J].岩石力学与工程学报,2003,22 (7):1104～1111
13LeiteM H, FerlandF.D eterminatio nofuncon finedcompr essives tr engtha ndYoung's mo dulusofporo usmaterialsbyindentationtests[J].EngineeringGeology,2001,59(3/4):267??80
14Lersow Mi c hael.D ee psoilc ompactionas ame th odofgroundimp ro vement and tostab iliz ationo fw astesandslopeswithdanger ofl iquefac ti on,determin ing themo dulusofd eformation an dshea rstrengthparametersoflooserock[J].WasteManagement,2001,21(2):161～174
15陈仲颐,周景星,王洪瑾.土力学[M].北京:清华大学出版社,1994
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心