双江口电站高地应力区地下厂房系统第I层开挖岩爆发育规律和岩爆预测初步研究

doi:10.13722/j.cnki.jrme.2019.0690

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (5448 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The measured maximum principal stress on the left bank of Shuangjiangkou Hydropower Station is 37.82 MPa，NNW direction，which is the highest measured ground stress of the underground powerhouse system of the domestic hydropower station under construction and under construction，belonging to the high to extremely high stress area. The excavation reveals that the rockburst phenomenon of the left bank cavern group is extremely common and prominent，which is mainly manifested in the prominent rockburst phenomenon of the first layer excavation，the continuous development of the whole section，the large development area，“V”type blasting pit is obvious，the shallow surface 0.2-0.5 m thin-layer circular section is stripped，the rockburst phenomenon is prominent at the initial stage of excavation，with a certain lag effect and a long duration，with typical time and space effect. The statistical law shows that the failure type of rockburst is mainly stress rockburst，with structural rockburst locally developed；the rockburst level of the first layer is slight to medium；the time of rockburst support is suitable for 2 to 3 days. According to the law of rockburst development in the first layer，the preliminary study on rockburst prediction is carried out，such as rockburst failure type，rockburst grade，rockburst time-space characteristics，rockburst failure phenomenon，etc.，in order to summarize the experience of rockburst prediction through the comparison of underground excavation，and provide some reference for other engineering rockburst prediction.

Key words： hydraulic engineering rockburst prediction high in-situ stress underground powerhouse system Shuangjiangkou hydropower station

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	MA Xingdong
	LI Changyou
	WANG Xiuhua
	YUAN Guoqing
	MA Hong

Cite this article:

MA Xingdong,LI Changyou,WANG Xiuhua, et al. Preliminary study on rockburst development law and rockburst prediction in excavation of layer I of underground powerhouse system in high geostress area of Shuangjiangkou hydropower station[J]. , 2020, 39(S1): 2964-2972.

URL:

http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0690 OR http://rockmech.whrsm.ac.cn/EN/Y2020/V39/IS1/2964

[2]	马行东. 某电站枢纽区地下洞室岩爆特征与防治措施[J]. 水电站设计，2013，29(1)：63–65.( MA Xingdong. Rockburst characteristics and prevention measures of underground caverns in a hydropower station hub area [J]. Design of Hydroelectric Power Station，2013，29(1)：63–65.(in Chinese))
[4]	周德培，洪开荣. 太平驿隧洞岩爆特征及防治措施[J]. 岩石力学与工程学报，1995，14(2)：171–178.(ZHOU Depei，HONG Kairong. The rockburst features of Taipinyi tunnel and the prevention methods[J]. Chinese Journal of Rock Mechanics and Engineering，1995，14(2)：171–178.(in Chinese))
[6]	徐林生，王兰生. 二郎山公路隧道岩爆发生规律与岩爆预测研究[J].岩土工程学报，1999，21(5)：569–572.(XU Linsheng，WANG Lansheng. Study on the laws of rockburst and its forcasting in the tunnel of Erlang mountain road[J]. Chinese Journal of Geotechnical Engineering，1999，21(5)：569–572.(in Chinese))
[9]	冯夏庭，陈炳瑞，明华军，等. 深埋隧洞岩爆孕育规律及机制：即时型岩爆[J]. 岩石力学与工程学报，2012，31(3)：433–444.(FENG Xiating，CHEN Bingrui，MING Huajun，et al，Evolution law and mechanism of rockbursts in deep tunnels：immediate rockburst[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(3)：433–444.(in Chinese))
[10]	陈炳瑞，冯夏庭，明华军，等. 深埋隧洞岩爆孕育规律及机制：时滞型岩爆[J]. 岩石力学与工程学报，2012，31(3)：561–569.(CHEN Bingrui，FENG Xiating，MING Huajun，et al. Evolution law and mechanism of rockbursts in deep tunnel：time delayed rockburst[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(3)：561–569.(in Chinese))
[12]	中华人民共和国国家标准编写组. GB50287—2016 水力发电工程地质勘察规范[S]. 北京：中国计划出版社，2016.(The National Standards Compilation Group of People′s Republic of China. GB50287—2016 Code for hydropower engineering geological investigation[S]. Beijing：China Planning Press，2016.(in Chinese))
[8]	侯靖，张春生，单治钢. 锦屏二级水电站深埋引水隧洞岩爆特征及防治措施[J].地下空间与工程学报，2011，7(6)：1 251–1 257.(HOU Jing，ZHANG Chunsheng，SHAN Zhigang. Rockburst characteristics and the control measures in the deep diversion tunnel of Jinping Ⅱ hydropower station[J]. Chinese Journal of Underground Space and Engineering，2011，7(6)：1 251–1 257.(in Chinese))
[5]	徐林生，王兰生，李永林. 岩爆形成机制与判据研究[J].岩土力学，2002，23(3)：300–303.(XU Linsheng，WANG Lansheng，LI Yonglin. Study on mechanism and judgment of rockbursts[J]. Rock and Soil Mechanics，2002，23(3)：300–303.(in Chinese))
[1]	马行东. 官地电站高地应力大跨度洞室群围岩稳定性评价[J]. 地下空间与工程学报，2016，12(增2)：564–570.( MA Xingdong. Surrounding rock stability evaluation of large span cavern group with high stress of Guandi hydropower station[J]. Chinese Journal of Underground Space and Engineering，2016，12(Supp.2)：564–570.(in Chinese))
[3]	张津生，陆家佑，贾愚如. 天生桥二级水电站引水隧洞岩爆研究[J].水力发电，1991，(10)：34–37.(ZHANG Jinsheng，LU Jiayou，JIA Yuru. Study on rockburst in diversion tunnel of Tianshengqiao Ⅱhydropower station[J].Water Hydroelectric，1991，(10)：34–37.(in Chinese))
[7]	谷明成，何发亮，陈成宗. 秦岭隧道岩爆的研究[J]. 岩石力学与工程学报，2002，21(9)：1 324–1 329.(GU Mingcheng，HE Faliang，CHEN Chengzong. Study of rockburst in Qinling tunnel [J].Chinese Journal of Rock Mechanics and Engineering，2002，21(9)：1 324 –1 329.(in Chinese))
[11]	冯夏庭，肖亚勋，丰光亮，等. 岩爆孕育过程研究[J]. 岩石力学与工程学报，2019，38(4)：649–673.(FENG Xiating，XIAO Yaxun，FENG Guangliang，et al. Study on the development process of rockbursts[J].Chinese Journal of Rock Mechanics and Engineering，2019，38(4)：649–673.(in Chinese))