两种不同沉积类型界面盐岩力学特性试验研究

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摘要金坛含盐系为一套浅湖相–泻湖相–蒸发岩相成盐构造，由机械沉积与化学沉积作用共同形成；潜江含盐系湖盆环境为常年性较深水分层盐湖，主要在深水、缺氧、静水环境下以机械沉积形成，因此2种沉积类型界面并不相同。针对2种不同沉积类型界面盐岩，分别进行单轴、三轴压缩及剪切试验研究，深入分析试验过程中盐岩力学特征变化情况及其力学含义，同时对试样破坏特性进行对比分析。研究发现：2种界面盐岩试样都表现出较好的延性特征，未发生崩溃式破坏；裂纹集中分布于界面处，纯盐岩段均少见裂纹生成，与金坛盐岩试样相比，潜江盐岩界面对试样变形的限制作用更突出；2种界面盐岩试样剪切峰值应力与纯盐岩相当，说明界面剪切破坏由盐岩的力学特性决定。研究成果对进一步深入研究我国不同地域层状盐岩地下储气库选址与建设具有一定参考意义。

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关键词 ：岩石力学, 盐岩, 沉积类型, 交界面, 单轴压缩, 剪切试验, 三轴压缩, 破坏机制

Abstract：Jintan bedded salt rock caused by mechanical and chemical deposition actions is structured under shallow lacustrine-lagoon facies-evaporite rock facies geological environments. However，Qianjiang bedded salt rock，whose lake basin environment is perennial deep water bedded salt lake，is formed by mechanical deposition action under the deep-water lake，oxygen lack and calm water environments. So，the interfaces between these two types of salt rocks are different. According to the characteristics of interfaces between Jintan and Qianjiang salt rocks，the uniaxial compression tests，shear tests and triaxial compression texts are carried out to investigate the interfaces of typical Jintan and Qianjiang salt rock specimens；and the complete stress-strain curves and their mechanical significations are deeply analyzed. Simultaneously，the specimens failure characteristics are also investigated. It is shown that：(1) Both of the two kinds of salt rock specimens present good ductility and the collapse failures don′t occur. (2) The cracks are generated mainly around the interfaces. The interface of Qianjiang salt rock plays a prominent role in limiting the deformation of the samples compared with the Jintan′s. (3) The peak shear stresses of both interface salt rocks are almost equal to the pure salt rock′s，which indicates that the shear failure of interface salt rocks is decided by the mechanical behavior of pure salt rock. The results could provide some references for selection and construction of gas storages.

Key words： rock mechanics salt rock types of deposition interface uniaxial compression shear test triaxial compression failure mechanism

收稿日期: 2011-07-08

引用本文:

姚院峰，杨春和，纪文栋，马洪岭，宗显雷. 两种不同沉积类型界面盐岩力学特性试验研究[J]. 岩石力学与工程学报, 2012, 31(2): 265-272.
YAO Yuanfeng，YANG Chunhe，JI Wendong，MA Hongling，ZONG Xianlei. EXPERIMENTAL STUDY OF MECHANICAL PROPERTY OF TWO TYPES OF SEDIMENTARY SALT ROCK WITH INTERFACE. , 2012, 31(2): 265-272.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/I2/265

[6]	HUNSCHE U，HAMPEL A. Rock salt—the mechanical properties of the host rock material for a radioactive waste repository[J]. Engineering Geology，1999，52(3/4)：271-291. " target="_blank">
[10]	杨春和，白世伟，吴益民. 应力水平及加载路径对盐岩时效的影响[J]. 岩石力学与工程学报，2000，19(3)：270-275.(YANG Chunhe，BAI Shiwei，WU Yimin. Stress level and loading path effect on time-dependent properties of salt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(3)：270-275.(in Chinese))
[13]	LI Y P，YANG C H，QIAN Q H，et al. Experimental research of deformation and failure characteristics of laminated salt rock[C]// Proceedings of the 6th Conference on the Mechanical Behaviors of Salt. London：Taylor and Francis Group，2007：103-108. " target="_blank">
[17]	杨春和，李银平. 互层盐岩体的Cosserat介质扩展本构模型[J]. 岩石力学与工程学报，2005，24(23)：4 226-4 232.(YANG Chunhe，LI Yinping. Expanded Cosserat medium constitutive model for laminated salt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(23)：4 226-4 232.(in Chinese)) " target="_blank">
[2]	魏长青，徐农隆. 金坛盆地茅兴段含盐地层沉积特征[J]. 中国煤田地质，2004，16(3)：13-14.(WEI Changqing，XU Nonglong. Maoxing block saliferous strata sedimentary characteristics，Jintan[J]. Block Coal Geology of China，2004，16(3)：13-14.(in Chinese)) " target="_blank">
[4]	HUNSCHE U. Fracture experiments on cubic rock salt samples[C]// The 1st Conference on the Mechanical Behavior of Salt. Clausthal- zellerfeld：Trans. Tech. Publications，1984：169-179. " target="_blank">
[12]	吴文，徐松林，杨春和，等. 盐岩的冲击特性实验研究[J]. 岩石力学与工程学报，2004，23(21)：3 613-3 620.(WU Wen，XU Songlin，YANG Chunhe，et al. Testing studies on response behaviour of rock salt to impacting[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(21)：3 613-3 620.(in Chinese)) " target="_blank">
[7]	SKROTZKI W. An estimation of the brittle to ductile transition in salt[C]// The 1st Conference on the Mechanical Behavior of Salt. Clausthal-zellerfeld：Trans. Tech. Publications，1984：381-388. " target="_blank">
[1]	杨春和，梁卫国，魏东吼，等. 中国盐岩能源地下储存可行性研究[J]. 岩石力学与工程学报，2005，24(24)：4 409-4 417.(YANG Chunhe，LIANG Weiguo，WEI Donghou，et al. Investigation on possibility of energy storage in salt rock in China[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(24)：4 409-4 417.(in Chinese)) " target="_blank">
[3]	张永生，杨玉卿，漆智先，等. 江汉盆地潜江凹陷古近系潜江组含盐岩系沉积特征与沉积环境[J]. 古地理学报，2003，5(1)：29-35. ZHANG Yongsheng，YANG Yuqing，QI Zhixian，et al. Sedimentary characteristics and environments of the salt-bearing series of Qianjiang formation of the paleogene in Qianjiang sag of Jianghan Basin[J]. Journal of Palaeogeography，2003，5(1)：29-35.(in Chinese))
[5]	HUNSCHE U. Determination of the dilatancy boundary and damage up to failure for four types of rock salt at different stress geometries[C]// Proceedings of the 4th Conference on the Mechanical Behavior of Salt. Clausthal-zellerfeld：Trans. Tech. Publications，1996：163-174. " target="_blank">
[8]	LAJTAI E Z，CARTER B J，DUNCAN E J S. An echelon crack-arrays in potash salt rock[J]. Rock Mechanics and Rock Engineering，1994，27(2)：89-111. " target="_blank">
[9]	杨春和，高小平，吴文. 盐岩时效特性实验研究与理论分析[J]. 辽宁工程技术大学学报，2004，23(6)：764-766.(YANG Chunhe，GAO Xiaoping，WU Wen. Experiment studies and theoretical analysis of time-dependent properties of rock salt[J]. Journal of Liaoning Technical University，2004，23(6)：764-766.(in Chinese)) " target="_blank">
[11]	LIANG W，YANG C，ZHAO Y，et al. Experimental investigation of mechanical properties of bedded salt rock[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(3)：400-411.
[14]	李银平，蒋卫东，刘江，等. 湖北云应盐矿深部层状盐岩直剪试验研究[J]. 岩石力学与工程学报，2007，26(9)：1 767-1 772.(LI Yinping，JIANG Weidong，LIU Jiang，et al. Direct shear tests for layered salt rocks Yunying salt mine in Hubei Province[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(9)：1 767-1 772. (in Chinese)) " target="_blank">
[18]	尤明庆. 岩石的力学性质[M]. 北京：地质出版社，2007：22-23.(YOU Mingqing. The mechanical behavior of rock[M]. Beijing：Geological Publishing House，2007：22-23.(in Chinese)) " target="_blank">
[15]	李银平，刘江，杨春和. 泥岩夹层对盐岩变形和破损特征的影响分析[J]. 岩石力学与工程学报，2006，25(12)：2 461-2 466.(LI Yinping，LIU Jiang，YANG Chunhe. Influence of mudstone interlayer on deformation and failure characteristics of salt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(12)：2 461-2 466.(in Chinese)) " target="_blank">
[16]	刘江，杨春和，吴文，等. 盐岩短期强度和变形特性试验研究[J]. 岩石力学与工程学报，2006，25(增1)：3 104-3 109.(LIU Jiang，YANG Chunhe，WU Wen，et al. Experiment study on short-term strength and deformation properties of salt rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(Supp.1)：3 104-3 109.(in Chinese)) " target="_blank">