基于强度折减法的盐岩地下储库腔群安全稳定性研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1412 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要将强度折减理论引入到盐岩地下储气库库群的安全稳定性研究中，提出库群失效破坏的临界标准。静力分析以塑性区贯通作为失效破坏临界判据，长期流变分析中失效破坏的临界判据包括塑性区贯通以及腔体体积收缩达到极限值。腔群整体安全系数计算通过搜索折减系数F，将岩体力学强度参数按F进行折减，使模型计算结果正好达到库群失效破坏的临界标准来实现。以金坛盐岩地下储气库为例，利用FLAC3D软件建立库群数值模型，根据强度折减理论对其进行静力分析和长期流变分析，获得不同条件下的库群整体安全系数。计算表明：静力分析中，随着折减系数的不断增大，腔周塑性区不断发展，腔群的整体安全系数为2.25；长期流变分析中，随着折减系数的增大，储库腔群的主要破坏因素由体积收缩逐渐转变为塑性区的发展贯通，在与静力分析相同的数值模型及内压条件下，库群运行50 a的整体安全系数为1.83。同时，探讨安全系数同矿柱间距、压强工况以及库群破坏模式之间的关系，为类似盐岩储气库库群安全运营和稳定性评价提供科学依据。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 储库腔群, 强度折减, 安全系数, 静力分析, 长期流变分析

Abstract：Strength reduction theory is introduced into security and stability research of the underground gas storage caverns group，and critical failure criterion of caverns is put forward. In the static analysis，critical failure criterion is transfixion of equivalent plastic strain among caverns. In the long-term rheological analysis，critical failure criterions include transfixion of equivalent plastic strain among caverns and the limiting shrinkage state of caverns? volume. Rock material strength parameters are reduced by reduction factor(F) step by step and the general safety factor of caverns is obtained when the calculated results just reach critical failure criterions. Jintan salt-rock underground gas storage is taken as an example. Numerical model is created by using the software of fast lagrangian analysis of continua in three-dimention(FLAC3D) and the model is analyzed both in static state and long-term rheological state based on strength reduction theory. The general safety factors of caverns are obtained in different conditions. In the static analysis，equivalent plastic strain among caverns develops continually with the increasing of the reduction factor and the general safety factor of caverns is 2.25. In the long-term rheological analysis，the key failure factor of the caverns transforms gradually from volume shrinkage to transfixion of the equivalent plastic strain among caverns. With the same numerical model parameters and internal pressure as the static analysis，the general safety factor of caverns is 1.83 after the system operates for 50 years. The relationships among safety factor，pillar spacing，pressure condition and failure mode are discussed. It is useful for safe operation and stability evaluation to other similar salt-rock underground gas storages group.

Key words： rock mechanics gas storage caverns group strength reduction safety factor static analysis long-term rheological analysis

收稿日期: 2012-04-27

引用本文:

贾超，李朋，张强勇. 基于强度折减法的盐岩地下储库腔群安全稳定性研究[J]. 岩石力学与工程学报, 2012, 31(s2): 3666-3672.
JIA Chao，LI Peng，ZHANG Qiangyong. SECURITY AND STABILITY RESEARCH FOR SALT-ROCK GAS STORAGE CAVERNS GROUP BASED ON STRENGTH REDUCTION METHOD. , 2012, 31(s2): 3666-3672.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/Is2/3666

[2]	戴永浩，陈卫忠，杨春和，等. 金坛盐岩储气库运营模型试验研究[J]. 岩土力学，2009，30(12)：3 574-3 580.(DAI Yonghao，CHEN Weizhong，YANG Chunhe，et al. A study of model test of Jintan rock salt gas storage?s operation[J]. Rock and Soil Mechanics，2009，30(12)：3 574-3 580.(in Chinese)) " target="_blank">
[5]	谭万鹏，郑颖人，王凯. 考虑蠕变特性的滑坡稳定状态分析研究[J]. 岩土工程学报，2010，32(增2)：5-8.(TAN Wanpeng，ZHENG Yingren，WANG Kai. Stable state of landslides considering creep properties[J].Chinese Journal of Geotechnical Engineering，2010，32(Supp.2)：5-8.(in Chinese)) " target="_blank">
[7]	尹雪英，杨春和，陈剑文. 金坛盐矿老腔储气库长期稳定性分析数值模拟[J].岩土力学，2006，27(6)：869-874.(YIN Xueying，YANG Chunhe，CHEN Jianwen. Numerical simulation research on long-time stability of gas storage in Jintan Salt Mine[J]. Rock and Soil Mechanics，2006，27(6)：869-874.(in Chinese)) " target="_blank">
[9]	王芝银，李云鹏. 岩体流变理论及其数值模拟[M]. 北京：科学出版社，2008：34-95.(WANG Zhiyin，LI Yunpeng. Rock rheological mechanics and numerical simulation[M]. Beijing：Science Press，2008：34-95.(in Chinese)) " target="_blank">
[12]	STAUDTMEISTER K，ROKAHR R B. Rock mechanical design of storage caverns for natural gas in rock salt mass[J]. International Journal of Rock Mechanics and Mining Sciences，1997，34(3/4)：300-313. " target="_blank">
[14]	杨春和. 深部盐岩层地下石油储备中的基础性研究-国家自然科学基金资助项目结题报告[R]. 武汉：中国科学院武汉岩土力学研究所，2008.(YANG Chunhe. Basic research on oil storage in depth rock bedded salt-final report of the national natural science foundation of China[R]. Wuhan：Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，2008.(in Chinese)) " target="_blank">
[16]	J M PATRONI. Life time of a natural gas storage well assessment of well-field maintenance cost[J]. Oil and Gas Science and Technology，2007，62(3)：297-309. " target="_blank">
[1]	张强勇，刘德军，贾超，等. 盐岩油气储库介质地质力学模型相似材料的研制[J]. 岩土力学，2009，30(12)：3 581-3 586.(ZHANG Qiangyong，LIU Dejun，JIA Chao，et al. Development of geomechanical model similitude material for salt rock oil-gas storage medium[J]. Rock and Soil Mechanics，2009，30(12)：3 581-3 586.(in Chinese)) " target="_blank">
[3]	刘明维，郑颖人. 基于有限元强度折减法确定滑坡多滑动面方法[J].岩石力学与工程学报，2006，25(8)：1 544-1 549.(LIU Mingwei，ZHENG Yingren. Determination methods of multi-slip surfaces landslide based on strength reduction FEM[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(8)：1 544-1 549.(in Chinese)) " target="_blank">
[10]	贾超，张强勇，张宁，等. 盐岩地下储气库风险分级机制初探[J]. 岩土力学，2009，30(12)：3 621-3 026.(JIA Chao，ZHANG Qiangyong，ZHANG Ning，et al. Preliminary research of risk classification for underground salt rock gas storage[J]. Rock and Soil Mechanics，2009，30(12)：3 621-3 626.(in Chinese)) " target="_blank">
[11]	SASAJIMA H I S. A ten years creep experiment on small rock specimens[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1987，24(2)：113-121. " target="_blank">
[15]	刘家涛. 盐岩地下储气库(群)运营期可靠度计算及风险评估[硕士学位论文][D].济南：山东大学，2011.(LIU Jiatao. Reliability calculation and risk assessment for salt-rock gas storage caverns during operation time[M. S. Thesis][D]. Jinan：Shandong University，2011.(in Chinese)) " target="_blank">
[4]	江权，冯夏庭，向天兵. 基于强度折减原理的地下洞室群整体安全系数计算方法探讨[J]. 岩土力学，2009，30(8)：2 483-2 488. (JIANG Quan，FENG Xiating，XIANG Tianbing. Discussion on method for calculating general safety factor of underground caverns based on strength reduction theory[J]. Rock and Soil Mechanics，2009，30(8)：2 483-2 488.(in Chinese)) " target="_blank">
[6]	杨春和，李银平，陈峰. 层状盐岩力学理论与工程[M]. 北京：科学出版社，2009：45-155.(YANG Chunhe，LI Yinping，CHEN Feng. Bedded salt rock mechanics and engineering[M]. Beijing：Science Press，2009：45-155.(in Chinese)) " target="_blank">
[8]	栾茂田，武亚军，年廷凯. 强度折减有限元法中边坡失稳的塑性区判据及其应用[J]. 防灾减灾工程学报，2003，23(3)：1-8.(LUAN Maotian，WU Yajun，NIAN Tingkai. A criterion for evaluating slop stability based on development of plastic zone by shear strength reduction FEM[J]. Journal of Disaster Prevention and Mitigation Engineering，2003，23(3)：1-8.(in Chinese)) " target="_blank">
[13]	ZHOU H W，WANG C P，HAN B B，et al. A creep constitutive model for salt rock based on fractional derivatives[J]. International Journal of Rock Mechanics and Mining Sciences，2011，48(1)：116-121.