高强度基岩爆破预处理泥水盾构掘进特征研究

阳军生; 邹志林; 梁奎生; 游永锋; 张学民; 肖超

doi:10.11779/CJGE201406026

高强度基岩爆破预处理泥水盾构掘进特征研究 English Version

1. 中南大学土木工程学院,湖南长沙 410075; 2. 北京城建设计发展集团股份有限公司,北京 100034; 3. 中铁隧道集团有限公司,河南郑州 450000

基金项目: 国家科技支撑计划课题（2012BAK24B02）; 国家自然科学基金项目（51008309）

详细信息

作者简介:
阳军生(1969- ),男,湖南永兴人,博士,教授,主要从事隧道与地下工程等领域的教学与科研工作。E-mail: jsyang@csu.edu.cn。

中图分类号: TU452；U455.4
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出版历程
- 收稿日期: 2013-10-31
- 发布日期: 2014-06-19

Tunneling characteristics of high-strength bedrock stratum pretreated by blasting

1. School of Civil Engineering, Central South University, Changsha 410075, China; 2. Beijing Urban Construction Design & Development Group Co., Limited, Beijing 100034, China; 3. China Railway Tunnel Stock Co., Ltd., Zhengzhou 450000, China

摘要

摘要: 泥水盾构在高强度基岩地层中掘进,盾构自身刀具无法有效破岩,采用基岩爆破预处理的控制钻爆法能严格控制破碎碴块体量,提高刀具破岩能力,但盾构施工过程中,掘进参数与岩石之间关系非常复杂。以台山核电站取水隧道为背景,对现场获得的工作数据进行挖掘,分析基岩爆破前后地层中盾构刀盘推力、刀盘扭矩及掘进速度的参数的选用特点。在此基础上,引入参数转换量FPI、TPI指数及比能进行研究,研究表明,未经处理基岩地层,岩石强度过高,刀盘推力先达到最大值,但切深很浅,扭矩很难发挥最大能力；经爆破处理后,基岩岩体受到不同程度破碎,盾构机推力及扭矩能有效发挥其功能,掘进效能提高。因此,在盾构机的工作负荷范围内,应依据基岩岩体破碎效果,调整刀盘推力和扭矩,使之更好地适应地层,力争达到高效安全的掘进目的。
- 高强度花岗岩 /
- 控制爆破 /
- 泥水盾构 /
- 比能 /
- 掘进效能
Abstract: The shield cutter cannot effectively break the rock with the slurry shield tunneling in the high-strength granites, while pretreatment of the bedrock by controlled blasting can strictly control the broken block size to enhance stronger rock breaking capacity, but the relationship between tunneling parameters and rock is very complicated during shield construction. Based on the intake tunnel of Taishan Nuclear Power Station, the field parameters are studied to analyze selection features of thrust force and torque of cutter head and tunneling rate. On this basis, the parameter conversion indices FPI, TPI and specific energy are introduced for analysis. The results show that the rock is too hard in the high-strength granites, the thrust force is close to its peak value, however the penetration is lower, it is too difficult to give full play of the torque capacity of the cutter head. The bedrock is destroyed by blasting to a certain extent, thus the slurry shield can take full advantage of its torque force as well as the thrust. In this situation, the tunneling performance is improved. Therefore the thrust and torque are adjusted to better adapt to the strata within the workload scope of the shield machine according to the fragmentation effect of blasting so as to achieve efficient and safe excavation.
- high-strength granite /
- controlled blasting /
- slurry shield /
- specific energy /
- tunneling performance

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参考文献(14)

[1]	竺维彬, 黄威然. 盾构工程孤石及基岩侵入体爆破技术研究[J]. 现代隧道技术, 2011, 48(5): 12-17. (ZHU Wei-bin, HUANG Wei-ran. Study on pre-treatment of boulders and gratitude intrusions by blasting in shield tunneling[J]. Modern Tunneling Technology, 2011, 48(5): 13-17. (in Chinese))
[2]	DELISIO A, ZHAO J, EINSTEIN H H. Analysis and prediction of TBM performance in blocky rock conditions at the Lötschberg Base Tunnel[J]. Tunneling and Underground Space Technology, 2013, 33: 131-142.
[3]	YAMAMOTO T, SHIRASAGI S, YAMAMOTO S, et al. Evaluations of the geological condition ahead of the tunnel face by geostatistical techniques using TBM driving data[J]. Tunneling and Underground Space Technology, 2003, 18(2): 213-221.
[4]	宋克志, 王梦恕. 复杂岩石地层隧道掘进机操作特性分[J].土木工程学报, 2012, 45(5): 175-181. (SONG Ke-zhi, WANG Meng-shu. Analysis of the operation characteristics of tunnel boring machine in complex rocks[J]. China Civil Engineering Journal, 2012, 45(5): 175-181. (in Chinese))
[5]	张莹, 蔡宗熙, 冷永刚, 等. 盾构机掘进参数的关联分析与地特征识别[J]. 哈尔滨工程大学学报, 2011, 32(4): 476-480. (ZHANG Ying, CAI Zong-xi, LENG Yong-gang, et al. Correlative analysis of shield tunneling data and recognition of geologic features[J]. Journal of Harbin Engineering University, 2011, 32(4): 476-480. (in Chinese))
[6]	刘明月, 杜彦良, 麻士琦. 地质因素对TBM掘进效率的影响[J]. 石家庄铁道学院学报, 2002, 15(4): 40-43. (LIU Ming-yue, DU Yan-liang, MA Shi-qi. Analysis of relationship between geologic condition and the efficiency of TBM boring[J]. Journal of Shijiazhuang Railway Institute, 2002, 15(4): 40-43. (in Chinese))
[7]	LIANG K S, YOU Y F, GUO W S. The risk control of an undersea shield tunnel passing through hard granites and core stones: A case history[C]// Proceedings of the ITA-AITES 2012 World Tunnel Congress. Bangkok: Engineering Institute Of Thailand, 2012: 325-327.
[8]	路耀邦, 刘洪震, 游永锋. 海底盾构隧道孤石爆破预处理关键技术[J]. 现代隧道技术, 2012, 49(5): 117-122. (LU Yao-bang, LIU Hong-zhen, YOU Yong-feng. Key techniques for the pretreatment of boulder blasting in an under-sea shield-driven tunnel[J]. Modern Tunneling Technology, 2012, 49(5): 117-122. (in Chinese))
[9]	PALMSTROM A. Measurements of and correlations between block size and rock quality designation (RQD)[J]. Tunneling and Underground Space Technology, 2005, 20(4): 362-377.
[10]	黄润秋, 霍俊杰. 锦屏I级水电站坝基岩体块度指数量化取值分析[J]. 岩石力学与工程学报, 2011, 30(3): 449-453. (HUANG Run-qiu, HUO Jun-jie. Quantitative analysis of rock mass block index for dam foundation of Jinping I hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(3): 449-453. (in Chinese))
[11]	胡卸文, 钟沛林, 任志刚. 岩体块度指数及其工程意义[J].水利学报, 2002, 33(3): 80-83. (HU Xie-wen, ZHONG Pei-lin, REN Zhi-gang. Rock-mass block index and its engineering practice significance[J]. Journal of Hydraulic Engineering, 2002, 33(3): 80-83. (in Chinese))
[12]	解立功. 砂卵石层盾构刀具损坏原因分析及国产化技术[D]. 天津: 天津大学, 2006. (XIE Li-gong. Cause analysis of shield tool failure and domestic technology in sand and gravel[D]. Tianjin: Tianjin University, 2006. (in Chinese))
[13]	尼克•巴顿.节理断层破碎岩体的隧道掘进机开挖[M]. 北京: 中国建筑工业出版社, 2009. (BARTON Nick. TBM tunneling in jointed and faulted rock[M]. Beijing: China Architecture and Building Press, 2009. (in Chinese))
[14]	TEALE R. The concept of specific energy in rock drilling[J]. International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts, 1965, 2(1): 57-73.