岩体弹性模量沿地层埋深变化规律研究
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摘要
利用国内外关于地应力的实测资料,通过数值方法探讨我国岩体的重要力学参数——弹性模量沿地层埋深的变化规律:10km埋深以上基本是线性增加的,在10km埋深附近会急剧减小.以丹江口地区为例,依据其表层地应力和岩体弹性模量的试验数据,利用我国岩体弹性模量沿地层埋深的变化规律,反演该区几种主要岩石在不同埋深处的弹性模量.
The changing rules along stratigraphic depth of young modulus of rock body in our country is explored by numerical simulation method,according to the mapping ground stress information in domestic and abroad: basically linear increasing above the depth 10km,and a sharp decreasing near depth 10km.To Danjiang Kou regional for example,the young modulus of several main rock body in different depth was derived,adopting the changing rules of young modulus of rock body in our country along stratigraphic depth and the surface ground stress measured and the test data of rock body young modulus in Danjiang Kou area.
The changing rules along stratigraphic depth of young modulus of rock body in our country is explored by numerical simulation method,according to the mapping ground stress information in domestic and abroad: basically linear increasing above the depth 10km,and a sharp decreasing near depth 10km.To Danjiang Kou regional for example,the young modulus of several main rock body in different depth was derived,adopting the changing rules of young modulus of rock body in our country along stratigraphic depth and the surface ground stress measured and the test data of rock body young modulus in Danjiang Kou area.
引文
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[3]何满潮,谢和平,彭苏萍,等.深部开采岩体力学研究[J].岩石力学与工程学报,2005,24(16):2803-2812.
[4]谢向东.基于流固耦合理论的丹江口水库诱发地震机理研究[D].武汉:武汉大学,2010.
[5]BRUDY M,ZOBACK M D,FUCHS K,et al.Estimation of the complete stress tensor to 8km depth in the KTB scientific drill holes'Implications for crustal strength[J].Journal of geophysical research,1997,102(B8):18453-18475.
[6]EMMERMANN R,LAUTERJUNG J.The German Continental Deep Drilling Program KTB:Overview and major results[J].Journal of geophysical research,1997,102(B8):18197-18201.
[7]ZOBACK MARK D,HARJES HANS PETER.Injection-induced earthquakes and crustal stress at 9 km depth at the KTB deep drilling site,Germany[J].Journal of geophysical research,1997,102(B8):18477-18491.
[8]景锋.中国大陆浅层地壳地应力场分布规律及工程扰动特征研究[D].武汉:中国科学院研究生院,2008.
[9]刘佑荣,唐辉明.岩体力学[M].武汉:中国地质大学出版社,2005.
[10]陈彭年.世界地应力实测资料汇编[M].北京:地震出版社,1990.
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