花岗岩矿物组成与其单轴抗压强度的相关性研究
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摘要
花岗岩体是很多重要工程地基或围岩的首选。选取高放废物地质处置阿拉善预选区巴彦诺日公花岗岩样品,开展薄片鉴定,获得各花岗岩样品的矿物含量和粒径;通过单轴压缩试验,获得花岗岩的单轴抗压强度。通过对比各组样品矿物含量和粒径与单轴抗压强度,研究二者之间的关系。结果表明:对花岗岩单轴抗压强度影响最大的矿物是钾长石和黑云母,斜长石和石英的影响不明显;矿物粒径与单轴抗压强度的相关性不明显,但与某一结构岩石单轴抗压强度的相关性明显;花岗岩的强度不仅仅取决于组成矿物含量和粒径,对于其内部结构的细节(如微裂隙、矿物排列、胶结等)非常敏感。
Granite is the first choice for many important engineering foundations or surrounding rocks. A variety of granite samples from the Bayannuorigong granite mass in the Alxa pre-selected region for geological disposal of high-level nuclear waste were subjected to petrographic studies. The same samples were then tested to determine the uniaxial compressive strength. The relationships between the uniaxial compressive strength and the mineralogical characteristics are described by simple regression analyses. The results show that the influence of K-feldspar and biotite on the uniaxial compressive strength of the granite is obvious. However,the influence of plagioclase and quartz is not obvious. The correlation between the mineral grain size and the uniaxial compressive strength is not obvious,but it is obviously correlated for the rock with the same structure.The strength of granite depends not only on the mineral compositions and grain size,but also on the details of its internal structure( such as microcracks,mineral arrangement,cementation,etc.).
Granite is the first choice for many important engineering foundations or surrounding rocks. A variety of granite samples from the Bayannuorigong granite mass in the Alxa pre-selected region for geological disposal of high-level nuclear waste were subjected to petrographic studies. The same samples were then tested to determine the uniaxial compressive strength. The relationships between the uniaxial compressive strength and the mineralogical characteristics are described by simple regression analyses. The results show that the influence of K-feldspar and biotite on the uniaxial compressive strength of the granite is obvious. However,the influence of plagioclase and quartz is not obvious. The correlation between the mineral grain size and the uniaxial compressive strength is not obvious,but it is obviously correlated for the rock with the same structure.The strength of granite depends not only on the mineral compositions and grain size,but also on the details of its internal structure( such as microcracks,mineral arrangement,cementation,etc.).
引文
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[8]史永跃,尚彦军,袁广祥,等.大亚湾中微子地下实验室场地的工程地质条件评价[J].工程地质学报,2007,15(3):328-337.[SHI Y Y,SHANG Y J,YUAN G X,et al.Evaluation of Engineering Geological Condition of Daya Bay For Sitting The Laboratory of Neutrino Underground Experiment[J].Journal of Engineering Geology,2007,15(3):328-337.(in Chinese)]
[9]林达明,袁广祥,尚彦军,等.基于岩芯分级的Hoek-Brown准则参数研究及应用[J].岩石力学与工程学报,2013,32(1):143-149.[LIN D M,YUAN G X,SHANG Y J,et al.Research on parameters of hoek-brown criterion and application based on core classification[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(1):143-149.(in Chinese)]
[10]尚彦军,金维浚,袁广祥,等.大亚湾花岗岩某钻孔雨季水位持续走高原因探析[J].水文地质工程地质,2017,44(6):15-24.[SHANG Y J,JIN W J,YUAN G X,et al.An analysis of the continual rise in groundwater levels in a rainy season at one borehole in granite near the Daya Bay[J].Hydrogeology&Engineering Geology,2017,44(6):15-24.(in Chinese)]
[11]王思敬.论岩石的地质本质性及其岩石力学演绎[J].岩石力学与工程学报,2009,28(3):433-450.[WANG S J.Geological nature of rock and its deduction for rock mechanics[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(3):433-450.(in Chinese)]
[12]Johansson E.Technological properties of rock aggregates[D].Lule:LuleUniversity of Technology,2011.
[13]于庆磊,杨天鸿,郑超,等.岩石细观结构对其变形强度影响的数值分析[J].岩土力学,2011,32(11):3468-3472.[YU Q L,YANG T H,ZHENG C,et al.Numerical analysis of influence of rock mesostructure on its deformation and strength[J].Rock and Soil Mechanics,2011,32(11):3468-3472.(in Chinese)]
[14]李晓鄂,蔡胜华.三峡工程坝基花岗岩力学性能的微观分析[J].电子显微学报,1995,14(5):379-384.[LI X E,CAI S H.The microscopic analysis of the mechanical properties of granite in dam foundationof the Three Gorges Project.Journal of Chinese Electron Microscopy Society,1995,14(5):379-384.]
[15]Tugrul A,Zarif I H.Correlation of mineralogical and textural characteristics with engineering properties of selected granitic rocks from Turkey[J].Engineering Geology,1999,51(4):303–317.
[16]Prikryl R.Some microstructural aspects of strength variation in rocks[J].International Journal of Rock Mechanics&Mining Sciences,2001,38(5):671–682.
[17]Keikha T,Keykha H A.Correlation between Mineralogical Characteristics and Engineering Properties of Granitic Rocks[J].The Electronic Journal of Geotechnical Engineering,2013,18(S):4055-4065
[18]Makani A,Vidal T.Relationships between mineralogical and physico-mechanical properties of granitic aggregates[J].Chemistry&Materials Research,2013,4:25-31
[19]孙皓,徐金明,吴红斌.使用试验视频图像研究花岗岩中不同矿物成分的变化特征[J].水文地质工程地质,2014,41(5):44-49.[SUN H,XU J M,WU H B.An investigation of mineral composition changes on granite surface using video images from uniaxial compression test[J].Hydrogeology&Engineering Geology,2014,41(5):44-49.(in Chinese)]
[20]DZ/T 0275.2-2015岩矿鉴定技术规范第2部分:岩石薄片制样[S].北京:中国标准出版社,2015.[DZ/T 0275.2-2015 Specification identification of rock and mineral-Part 2:Rock thin section preparation[S].Beijing:Standards Press of China,2015.(in Chinese)]
[21]GB/T 50266—2013工程岩体试验方法标准[S].北京:中国计划出版社,2013.[GB/T 50266—2013Standard for test methods of engineering rock mass[S].Beijing:China Planning Press,2013.(in Chinese)]
[2]洪大卫,王涛,童英.中国花岗岩概述[J].地质论评,2007,53(增刊1):9-16.[HONG D W,WANG T,TONG Y.An outline about granitoids in China[J].Geological Review,2007,53(Sup 1):9-16.(in Chinese)]
[3]袁广祥,尚彦军,史永跃,等.与地下石油储备库有关工程地质问题研究现状和对策[J].工程地质学报,2006,14(6):792-799.[YUAN G X,SHANG Y J,SHI Y Y,et al.Engineering geological issues and measures for storage of oil and gas in underground rock caverns[J].Journal of Engineering Geology,2006,14(6):792-799.(in Chinese)]
[4]王驹,苏锐,陈伟明,等.中国高放废物深地质处置[J].岩石力学与工程学报,2006,25(4):649-658.[WANG J,SU R,CHEN W M,et al.Deep geological disposal of high-level radioactive wastes in China[J].Chinese Journal of Rock Mechanics&Engineering,2006,25(4):649-658.(in Chinese)]
[5]张路青,曾庆利,袁广祥,等.高放废物地质处置阿拉善预选区工程地质适宜性评价[M].北京:科学出版社,2016.[ZHANG L Q,ZENG Q L,YUAN G X,et al.2016.Engineering geological suitability evaluation of Alxa Pre-selected Region for Geological Disposal of High-level Nuclear Waste[M].Beijing:Science Press,2016.(in Chinese)]
[6]魏亚强,董艳辉,周鹏鹏,等.基于离散裂隙网络模型的核素粒子迁移数值模拟研究[J].水文地质工程地质,2017,44(1):123-130.[WEI Y Q,DONG Y H,ZHOU P P,et al.Numerical simulation of radionuclide particle tracking based on discrete fracture network[J].Hydrogeology&Engineering Geology,2017,44(1):123-130.(in Chinese)]
[7]万汉平,徐贵来,喻翔,等.花岗岩型高放废物处置库选址中的地球物理评价——以新疆阿奇山地段候选场址为例[J].地球物理学进展,2015,30(6):2778-2784.[WAN H P,XU G L,YU X,et al.The geophysics evaluation on granite type of highlevel radioactive waste disposal repository——taking Aqishan potential site as an example[J].Progress in Geophysics,2015,30(6):2778-2784.(in Chinese)]
[8]史永跃,尚彦军,袁广祥,等.大亚湾中微子地下实验室场地的工程地质条件评价[J].工程地质学报,2007,15(3):328-337.[SHI Y Y,SHANG Y J,YUAN G X,et al.Evaluation of Engineering Geological Condition of Daya Bay For Sitting The Laboratory of Neutrino Underground Experiment[J].Journal of Engineering Geology,2007,15(3):328-337.(in Chinese)]
[9]林达明,袁广祥,尚彦军,等.基于岩芯分级的Hoek-Brown准则参数研究及应用[J].岩石力学与工程学报,2013,32(1):143-149.[LIN D M,YUAN G X,SHANG Y J,et al.Research on parameters of hoek-brown criterion and application based on core classification[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(1):143-149.(in Chinese)]
[10]尚彦军,金维浚,袁广祥,等.大亚湾花岗岩某钻孔雨季水位持续走高原因探析[J].水文地质工程地质,2017,44(6):15-24.[SHANG Y J,JIN W J,YUAN G X,et al.An analysis of the continual rise in groundwater levels in a rainy season at one borehole in granite near the Daya Bay[J].Hydrogeology&Engineering Geology,2017,44(6):15-24.(in Chinese)]
[11]王思敬.论岩石的地质本质性及其岩石力学演绎[J].岩石力学与工程学报,2009,28(3):433-450.[WANG S J.Geological nature of rock and its deduction for rock mechanics[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(3):433-450.(in Chinese)]
[12]Johansson E.Technological properties of rock aggregates[D].Lule:LuleUniversity of Technology,2011.
[13]于庆磊,杨天鸿,郑超,等.岩石细观结构对其变形强度影响的数值分析[J].岩土力学,2011,32(11):3468-3472.[YU Q L,YANG T H,ZHENG C,et al.Numerical analysis of influence of rock mesostructure on its deformation and strength[J].Rock and Soil Mechanics,2011,32(11):3468-3472.(in Chinese)]
[14]李晓鄂,蔡胜华.三峡工程坝基花岗岩力学性能的微观分析[J].电子显微学报,1995,14(5):379-384.[LI X E,CAI S H.The microscopic analysis of the mechanical properties of granite in dam foundationof the Three Gorges Project.Journal of Chinese Electron Microscopy Society,1995,14(5):379-384.]
[15]Tugrul A,Zarif I H.Correlation of mineralogical and textural characteristics with engineering properties of selected granitic rocks from Turkey[J].Engineering Geology,1999,51(4):303–317.
[16]Prikryl R.Some microstructural aspects of strength variation in rocks[J].International Journal of Rock Mechanics&Mining Sciences,2001,38(5):671–682.
[17]Keikha T,Keykha H A.Correlation between Mineralogical Characteristics and Engineering Properties of Granitic Rocks[J].The Electronic Journal of Geotechnical Engineering,2013,18(S):4055-4065
[18]Makani A,Vidal T.Relationships between mineralogical and physico-mechanical properties of granitic aggregates[J].Chemistry&Materials Research,2013,4:25-31
[19]孙皓,徐金明,吴红斌.使用试验视频图像研究花岗岩中不同矿物成分的变化特征[J].水文地质工程地质,2014,41(5):44-49.[SUN H,XU J M,WU H B.An investigation of mineral composition changes on granite surface using video images from uniaxial compression test[J].Hydrogeology&Engineering Geology,2014,41(5):44-49.(in Chinese)]
[20]DZ/T 0275.2-2015岩矿鉴定技术规范第2部分:岩石薄片制样[S].北京:中国标准出版社,2015.[DZ/T 0275.2-2015 Specification identification of rock and mineral-Part 2:Rock thin section preparation[S].Beijing:Standards Press of China,2015.(in Chinese)]
[21]GB/T 50266—2013工程岩体试验方法标准[S].北京:中国计划出版社,2013.[GB/T 50266—2013Standard for test methods of engineering rock mass[S].Beijing:China Planning Press,2013.(in Chinese)]