赣龙铁路梅花山隧道围岩应力及岩体模量研究

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Abstract The distribution characteristics of stress and modulus，the features of stress concentration zone of surrounding rock，and the effect of the method of excavation on the loose zone of surrounding rock were analyzed based on the measurements in Meihuashan tunnel of Ganzhou–Longyan railway. The region of Meihuashan tunnel was found to be located in a high geostress zone with the initial principal stresses to be the tectonic ones. The stress concentration zone in surrounding rock shifted downwards. The stress concentration zone was 5.9–11.9 m for the horizontal hole，and 7.9–15.9 m for the vertical hole. The degree of stress concentration was greatly reduced after the stress concentration zone in surrounding rock was transferred further deeper. The concentration factor of the maximum principal stress was 1.87 for the horizontal hole，and 1.23 for the vertical hole. The relaxed range of the tunnel wall was 0–5 m with the smooth blasting，and the relaxed range was 0.0–7.2 m for the tunnel floor without the smooth blasting. The stress and the modulus of rock mass around the horizontal hole were larger than those for vertical hole at the same depth of the stress relaxation zone. The transfer of the peak stress changed the stress distribution of surrounding rock，which lent a clue for a new type of tunnel support. Key words：

Key words： rock mechanics hydraulic fracturing in-situ stress measurement stress of surrounding rocks modulus of rock mass

Received: 28 April 2014

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I09/1880

[1]	BACKBLOM G，MARTIN C D. Recent experiments in hard rocks to study the excavation response：implications for the performance of a nuclear waste geological repository[J]. Tunnelling and Underground Space Technology，1999，14(3)：377-394. " target="_blank">
[2]	READ R S. 20 years of excavation response studies at AECLs underground research laboratory[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(8)：1 251-1 275. " target="_blank">
[3]	罗超文，李海波，刘亚群. 煤矿深部岩体地应力特征及开挖扰动后围岩塑性区变化规律[J]. 岩石力学与工程学报，2011，30(8)：1 613-1 618.(LUO Chaowen，LI Haibo，LIU Yaqun. Characteristics of in-situ stress and variation law of plastic zone of surrounding rocks around deep tunnels in a coal mine[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(8)：1 613-1 618.(in Chinese))
[4]	李宁，陈蕴生，陈方方，等. 地下洞室围岩稳定性评判方法新探讨[J]. 岩石力学与工程学报，2006，25(9)：1 941-1 944.(LI Ning，CHEN Yunsheng，CHEN Fangfang，et a1. New research on stability criterion of surrounding rock in underground cavern[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(9)：1 941-1 944.(in Chinese))
[5]	KIM K，FRANKLIN J A. Suggested methods for rock stress determination[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1987，24(1)：53-73. " target="_blank">
[6]	中华人民共和国行业标准编写组. SL264—2001 水利水电工程岩石试验规范[S]. 北京：中国水利水电出版社，2001.(The Professional Standards Compilation Group of People?s Republic of China. SL264—2001 Specifications for rock tests in water conservancy and hydroelectric engineering[S]. Beijing：China Water Power Press，2001.(in Chinese)) " target="_blank">
[7]	中华人民共和国国家标准编写组. GB/T50266—99工程岩体试验标准[S]. 北京：中国计划出版社，1999.(The National Standards Compilation Group of People?s Republic of China. GB/T50266—99 Engineering rock mass test standards[S]. Beijing：China Planning Press，1999.(in Chinese)) " target="_blank">
[8]	蔡美峰，乔兰，于波. 金川二矿区深部地应力测量及其分布规律研究[J]. 岩石力学与工程学报，1999，18(4)：414-418.(CAI Meifeng，QIAO Lan，YU Bo. Results and analysis of in-situ stress measurement at deep position of No.2 mining area of Jinchuan nickel mine[J]. Chinese Journal of Rock Mechanics and Engineering，1999，18(4)：414-418.(in Chinese))
[9]	刘允芳. 罗超文，龚壁新，等. 岩体地应力与工程建设[M]. 武汉：湖北科学技术出版社，2000：1-215.(LIU Yunfang，LUO Chaowen，GONG Bixin，et al. Geostress of rock mass and engineering construction[M]. Wuhan：Hubei Science and Technology Press，2000：1-215.(in Chinese)) " target="_blank">
[10]	白世伟，李光煜. 二滩水电站坝区岩体应力场研究[J]. 岩石力学与工程学报，1982，1(1)：45-56.(BAI Shiwei，LI Guangyu. Study on stress field of Ertan hydroelectric station[J]. Chinese Journal of Rock Mechanics and Engineering，1982，1(1)：45-56.(in Chinese))
[11]	郭启良，伍法权，钱卫平，等. 乌鞘岭长大深埋隧道围岩变形与地应力关系的研究[J]. 岩石力学与工程学报，2002，21(12)：2 113- 2 118.(GUO Qiliang，WU Faquan，QIAN Weiping，et al. Study on relationship between deformation of surrounding rock and in-situ stress in Wushaoling deep-buried railway tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(12)：2 113-2 118.(in Chinese))
[12]	刘亚群，罗超文，李海波. 南水北调西线工程区地应力测量及地应力场特征分析[J]. 岩石力学与工程学报，2005，24(20)：3 620-3 624. (LIU Yaqun，LUO Chaowen，LI Haibo. Study on in-situ stress measurements and characteristics of in-situ stress field in west route of south-to-north water transfer project[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(20)：3 620-3 624.(in Chinese))
[13]	肖本职，罗超文，刘元坤. 鄂西地应力测量与隧道岩爆预测分析[J].岩石力学与工程学报，2005，24(24)：4 472-4 477.(XIAO Benzhi，LUO Chaowen，LIU Yuankun. In-situ stress measurement and prediction analysis of tunnel rockburst in west Hubei province[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(24)：4 472-4 477.(in Chinese))
[14]	中华人民共和国国家标准编写组. GB 502l8—94工程岩体分级标准[S]. 北京：中国计划出版社，1995.(The National Standards Compilation Group of People?s Republic of China. GB 502l8—94 Standard for engineering classification of rock masses[S]. Beijing：China Planning Press，1995.(in Chinese)) " target="_blank">
[15]	罗超文，李海波，刘亚群. 深埋巷道地应力测量及围岩应力分布特征研究[J]. 岩石力学与工程学报，2010，29(7)：1 418-1 423.(LUO Chaowan，LI Haibo，LIU Yaqun. Study of distribution characteristics of stress in surrounding rock mass and in-situ stress measurement for deeply buried tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(7)：1 418-1 423.(in Chinese))
[16]	陈炳瑞，冯夏庭，肖亚勋，等. 深埋隧洞TBM施工过程围岩损伤演化声发射试验[J]. 岩石力学与工程学报，2010，29(8)：1 562-1 569. (CHEN Bingrui，FENG Xiating，XIAO Yaxun，et al. Acoustic emission test on damage evolution of surrounding rock in deep-buried tunnel during TBM excavation[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(8)：1 562-1 569.(in Chinese)) " target="_blank">
[17]	李光煜，刘继光，谢远静. 钻孔弹模计检测断层固结灌浆效果[J].岩石力学与工程学报，1996，15(3)：289-293.(LI Guangyu，LIU Jiguang，XIE Yuanjing. Detection of consolidation grouting effects in faults by means of borehole jack[J]. Chinese Journal of Rock Mechanics and Engineering，1996，15(3)：289-293.(in Chinese))
[18]	尹健民，艾凯，刘元坤，等. 钻孔弹模法评价小湾水电站坝基岩体卸荷特征[J]. 长江科学院院报，2006，23(4)：44-46.(YIN Jianmin，AI Kai，LIU Yuankun，et al. Unloading characteristic evaluation of xiaowan hydropower station?s foundation rock mass by borehole elasticity modulus method[J]. Journal of Yangtze River Scientific Research Institute，2006，23(4)：44-46.(in Chinese))
[19]	罗超文，李海波，马鹏. 刚性钻孔弹模计在白鹤滩电站坝基岩体变形参数测定中的应用[J]. 长江科学院院报，2012，29(8)：76-82.(LUO Chaowen，LI Haibo，MA Peng. Application of borehole jack in deformation modulus measurement of rock mass in the foundation of Baihetan hydropower station[J]. Journal of Yangtze River Scientific Research Institute，2012，29(8)：76-82.(in Chinese))
[20]	刘宁，张春生，陈祥荣，等. 深埋隧洞开挖围岩应力演化过程监测及特征研究[J]. 岩石力学与工程学报，2011，30(9)：1 729-1 737. (LIU Ning，ZHANG Chunsheng，CHEN Xiangrong，et al. Monitoring and characteristics study of stress evolution of surrounding rock during deep tunnel excavation[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(9)：1 729-1 737.(in Chinese))