深部岩巷精准介入围岩结构的分步联合支护技术探索

doi:10.13722/j.cnki.jrme.2023.0035

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (63488 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为探究深部高应力条件下围岩应力和结构随时间发展变化特征，基于流变应力恢复法测试技术，研究可获取扰动应力的应力场演化监测方法；基于弱反射光纤光栅技术和时分复用原理，研发大变形光纤光栅位移传感器、围岩结构实时监测技术；研究深部围岩开挖卸荷条件下破裂碎胀区、损伤扩容区和连续变形区的分布规律，推导极坐标条件下围岩应力分布特征及损伤扩容区范围，进一步分析考虑围岩–支护协同作用的承载合力，提出支护措施合理介入时机的决策方法。基于以上结论，研究针对不同围岩等级的预应力锚杆、支架、喷浆、预应力锚索及深孔注浆等不同措施的介入时机决策方法，提出深部岩巷精准介入围岩结构的分步联合支护技术。研究表明：各支护措施应在合理的时机介入围岩结构演化过程。预应力锚杆应在开挖后尽早施作，及时恢复巷道表面的法向应力；浅孔注浆可在破裂碎胀区(Rr)扩展到约2Rb/3左右时实施；预应力锚索应在损伤扩容区(Rf)超出锚杆一次支护作用范围(Rb)且未超过锚索作用范围(Rc)前完成，从而利于围岩能量释放并限制破坏区向深处的快速扩展；深孔注浆可在破裂碎胀区Rr扩展到约3Rc/4左右时实施。

	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
	康永水1
	刘泉声2
	刘滨1
	朱元广1
	李翔3
	王升1

关键词 ：岩石力学, 深部巷道, 高应力, 精准介入, 围岩结构演化, 分步联合支护

Abstract：To investigate the evolution characteristics of stress and rock structure under high stresses，a testing method for the evolution of the in-situ stress was studied based on the rheological recovery method，which can monitor the disturbed stress in surrounding rock. Based on the weak reflection fiber grating technology and time division multiplexing principle，a large deformation sensor was developed and a real-time monitoring method for rock structure was developed. Further，the distribution of the fractured zone，damage expansion zone and continuous deformation zone under excavation and unloading conditions of deep roadway was studied. The distribution characteristics of stress and the range of damage expansion zone under polar coordinates were derived. The bearing capacity considering the coupling effect of surrounding rock and support was further analyzed，and the proper intervention timing of each support measures was proposed. Subsequently，the intervention timing of support measures such as pre-tensioned bolt，steel support，shotcrete，pre-tensioned cable and deep grouting for different grades of surrounding rock was studied. And the step-wised combined support technology for intervention of rock structure was studied. Support measures should be conducted at a proper timing during the evolution of structure. Pre-tensioned bolt should be applied as early as possible after excavation to restore the normal stress on the roadway surface. Shallow grouting can be carried out when Rr extends to approximately 2Rb/3. Pre-tensioned cable should be installed before the damage expansion area(Rf) exceeds the primary support range of bolts(Rb) and the action range of cables(Rc)，which is favorable for releasing high pressure and hindering rapid expansion of the failure zone. The intervention timing of deep grouting can be implemented when of the fractured zone(Rr) expands to approximately 3Rc/4.

Key words： rock mechanics deep roadway high stress precise intervention surrounding rock structure evolution step-wised combined support

引用本文:

康永水1，刘泉声2，刘滨1，朱元广1，李翔3，王升1. 深部岩巷精准介入围岩结构的分步联合支护技术探索[J]. 岩石力学与工程学报, 2023, 42(11): 2682-2693.
KANG Yongshui1，LIU Quansheng2，LIU Bin1，ZHU Yuanguang1，LI Xiang3，WANG Sheng1. Investigation of combined step-wised support technology for precise intervention of surrounding rock structure for deep rock roadway. , 2023, 42(11): 2682-2693.

链接本文:

http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2023.0035 或 http://rockmech.whrsm.ac.cn/CN/Y2023/V42/I11/2682

[2]	康红普. 煤矿巷道支护与加固材料的发展及展望[J]. 煤炭科学技术，2021，49(4)：1-11.(KANG Hongpu. Development and prospects of support and reinforcement materials for coal mine roadways[J]. Coal Science and Technology，2021，49(4)：1-11.(in Chinese))
[6]	康永水，耿志，刘泉声，等. 我国软岩大变形灾害控制技术与方法研究进展[J]. 岩土力学，2022，43(8)：2 035-2 059.(KANG Yongshui，GENG Zhi，LIU Quansheng，et al. Research progress on support technology and methods for soft rock with large deformation hazards in China[J]. Rock and Soil Mechanics，2022，43(8)：2 035-2 059.(in Chinese))
[10]	SHI L，LI C C，ZHANG X，et al. Strength characteristics of brittle rocks under multi-stage intermediate principal stress loading[J]. Géotechnique Letters，2022，12(2)：1-5.
[12]	姜鹏飞，康红普，王志根，等. 千米深井软岩大巷围岩锚架充协同控制原理、技术及应用[J]. 煤炭学报，2020，45(3)：1 020-1 035. (JIANG Pengfei，KANG Hongpu，WANG Zhigen，et al. The principle，technology and application of anchorage coordinated control of surrounding rock in soft rock tunnels in thousand-meter deep wells[J]. Journal of China Coal Society，2020，45(3)：1 020-1 035.(in Chinese))
[14]	杨仁树，朱晔，李永亮，等. 弱胶结软岩巷道层状底板底鼓机制及控制对策[J]. 采矿与安全工程学报，2020，37(3)：443-450.(YANG Renshu，ZHU Ye，LI Yongliang，et al. Mechanism and control countermeasures of bed heave of layered floor in weak cemented soft rock roadway[J]. Journal of Mining and Safety Engineering，2020，37(3)：443-450.(in Chinese))
[20]	孙振宇. 隧道支护体系协同作用原理与设计方法[博士学位论文][D]. 北京：北京交通大学，2020.(SUN Zhenyu. The synergetic principle and design method of tunnel support system[Ph. D. Thesis][D]. Beijing：Beijing Jiaotong University，2020.(in Chinese))
[22]	孙闯，张向东，张建俊. 深部断层破碎带竖井围岩与支护系统稳定性分析[J]. 煤炭学报，2013，38(4)：587-594.(SUN Chuang，ZHANG Xiangdong，ZHANG Jianjun. Stability analysis of vertical shaft surrounding rock and supporting system in deep fault fracture[J]. Journal of China Coal Society，2013，38(4)：587-594.(in Chinese))
[24]	梁鹏，高永涛，周喻，等. 隧道初支合理支护时机确定方法及其工程应用[J]. 工程科学学报，2022，44(2)：265-276.(LIANG Peng，GAO Yongtao，ZHOU Yu，et al. Determination method and engineering application of reasonable installation timing of the initial ground support[J]. Chinese Journal of Engineering，2022，44(2)：265-276.(in Chinese))
[30]	刘泉声，高玮，袁亮. 煤矿深部岩巷稳定控制理论与支护技术及应用[M]. 北京：科学出版社，2010：72-147.(LIU Quansheng，GAO Wei，YUAN Liang. Stability control theory and support technology of deep rock roadway in coal mine and its application[M]. Beijing：Science Press，2010：72-147.(in Chinese))
[32]	KANG Y S，LIU Q S，GONG G Q，et al. Application of a combined support system to the weak floor reinforcement in deep underground coal mine[J]. International Journal of Rock Mechanics and Mining Sciences，2014，71：143-150.
[34]	焦生. 软岩巷道最佳支护时机研究现状综述[J]. 世界有色金属，2017，(1)：134-136.(JIAO Sheng. Review of the research on the best supporting time of the soft rock roadway[J]. World Nonferrous Metals，2017，(1)：134-136.(in Chinese))
[8]	康红普. 我国煤矿巷道围岩控制技术发展70年及展望[J]. 岩石力学与工程学报，2021，40(1)：1-30.(KANG Hongpu. Seventy years development and prospects of strata control technologies for coalmine roadways in China[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(1)：1-30.(in Chinese))
[18]	李磊，文志杰. 软岩反底拱优化加固技术及应用——以上海庙矿区为例[J]. 煤炭学报，2021，46(4)：1 242-1 252.(LI Lei，WEN Zhijie. Optimal floor heave control technology and its engineering application in soft rock roadway：A case study of Shanghaimiao mining area[J]. Journal of China Coal Society，2021，46(4)：1 242-1 252.(in Chinese))
[28]	YANG S Q，CHEN M，JING H W，et al. A case study on large deformation failure mechanism of deep soft rock roadway in Xin?an coal mine，China[J]. Engineering Geology，2017，217：89-101.
[5]	KANG Y S，GENG Z，LIU B，et al. Study on gas extraction efficiency using in-seam borehole method considering influence of plastic zone induced by borehole drilling[J]. Geomechanics for Energy and the Environment，2022，https：//doi.org/10.1016/j.gete. 2022. 100426.
[15]	KANG Y S，LIU Q S，XI H L. Numerical analysis of THM coupling of a deeply buried roadway passing through composite strata and dense faults in a coal mine[J]. Bulletin of Engineering Geology and the Environment，2014，73：77-86.
[25]	周亚博，张杰，刘也，等. 深部破碎巷道围岩—支护作用与支护时机[J]. 金属矿山，2022，(6)：17-23.(ZHOU Yabo，ZHANG Jie，LIU Ye，et al. Interaction between surrounding rock and support in deep broken roadway and support opportunity[J]. Metal Mine，2022，(6)：17-23.(in Chinese))
[35]	张传庆，周辉，冯夏庭. 基于破坏接近度的岩土工程稳定性评价[J]. 岩土力学，2007，28(5)：888-894.(ZHANG Chuanqing，ZHOU Hui，FENG Xiating. Stability assessment of rockmass engineering based on failure approach index[J]. Rock and Soil Mechanics，2007，28(5)：888-894.(in Chinese))
[7]	中国岩石力学与工程学会. 2016-2017岩石力学与岩石工程学科发展报告[M]. 北京：中国科学技术出版社，2018：45-47.(Chinese Society of Rock Mechanics and Engineering. 2016-2017 Rock mechanics and rock engineering discipline development report[M]. Beijing：China Science and Technology Press，2018：45-47.(in Chinese))
[17]	孙晓明，王冬，王聪，等. 恒阻大变形锚杆拉伸力学性能及其应用研究[J]. 岩石力学与工程学报，2014，33(9)：1 765-1 771. (SUN Xiaoming，WANG Dong，WANG Cong，et al. Tensile mechanical properties and application of constant resistance and large deformation anchor rods[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(9)：1 765-1 771.(in Chinese))
[27]	苏永华，刘少峰，王凯旋，等. 基于收敛—约束原理的地下结构稳定性分析[J]. 岩土工程学报，2014，36(11)：2 002-2 009.(SU Yonghua，LIU Shaofeng，WANG Kaixuan，et al. Stability analysis of underground structures based on convergence-confinement method[J]. Chinese Journal of Geotechnical Engineering，2014，36(11)：2 002-2 009.(in Chinese))
[1]	吴吟：在未来相当长时期内煤炭作为主体能源的地位不会改变[EB/OL]. 国家能源局，2012-03-22，http：//www.nea.gov.cn/ 2012-03/22/c_ 131482189.htm.(WU Yin. In the future，the status of coal as the main energy source will not change for a long time in the future[EB/OL]. National Energy Administration of China，2012-03-22，http：//www.nea.gov.cn/2012-03/22/c_ 131482189.htm.(in Chinese))
[3]	何满潮，景海河，孙晓明. 软岩工程地质力学研究进展[J]. 工程地质学报，2000，(1)：46-62.(HE Manchao，JING Haihe，SUN Xiaoming. Research progress of soft rock engineering geomechanics in China coal mine[J]. Journal of Engineering Geology，2000，(1)：46-62.(in Chinese))
[13]	张杰. 软弱巷道围岩变形破坏综合分析[J]. 岩石力学与工程学报，2011，30(增2)：3 428-3 433.(ZHANG Jie. Comprehensive analysis of deformation and failure of surrounding rock in weak roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.2)：3 428-3 433.(in Chinese))
[4]	何满潮. 深部的概念体系及工程评价指标[J].岩石力学与工程学报，2005，24(16)：2 854-2 858.(HE Manchao. Deep concept system and engineering evaluation index[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 854-2 858.(in Chinese))
[23]	FENG J M，YAN C W，YE L，et al. Evaluation of installation timing of initial ground support for large-span tunnel in hard rock[J]. Tunnelling and Underground Space Technollogy，2019，93：103087.
[33]	何满潮. 中国煤矿软岩巷道支护理论与实践[M]. 徐州：中国矿业大学出版社，1996：50-56.(HE Manchao. Theory and practice of soft rock roadway support in coal mines of China[M]. Xuzhou：China University of Mining and Technology Press，1996：50-56.(in Chinese))
[11]	张农，阚甲广，杨森. 锚杆(索)和U型钢支架支护失效形式与控制技术[J]. 煤炭科学技术，2015，43(6)：41-47.(ZHANG Nong，KAN Jiaguang，YANG Sen. The failure mode and control technology of anchor rod (cable)and U-shaped steel support[J]. Coal Science and Technology，2015，43(6)：41-47.(in Chinese))
[9]	侯朝炯. 深部巷道围岩控制的关键技术研究[J]. 中国矿业大学学报，2017，46(5)：970-978.(HOU Chaojiong. Key technology for surrounding rock control in deep roadway[J]. Journal of China University of Mining and Technology，2017，46(5)：970-978.(in Chinese))
[16]	孙振宇，张顶立，房倩，等. 隧道初期支护与围岩相互作用的时空演化特性[J]. 岩石力学与工程学报，2017，36(增2)：3 943-3 956. (SUN Zhenyu，ZHANG Dingli，FANG Qian，et al. Spatial and temporal evolution characteristics of interaction between primary support and tunnel surrounding rock[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(Supp.2)：3 943-3 956.(in Chinese))
[19]	杨朋，华心祝，刘钦节，等. 深井大断面沿空留巷底板裂隙分形特征动态演化规律试验研究[J]. 岩土力学，2017，38(增1)：351-358.(YANG Peng，HUA Xinzhu，LIU Qinjie，et al. Experimental study of dynamic evolution characteristic of floor fractal dimension of gob-side entry retaining with large section in deep mine[J]. Rock and Soil Mechanics，2017，38(Supp.1)：351-358.(in Chinese))
[21]	刘泉声，康永水，白运强. 顾桥煤矿深井岩巷破碎软弱围岩支护方法探索[J]. 岩土力学，2011，32(10)：3 097-3 104.(LIU Quansheng，KANG Yongshui，BAI Yunqiang. Research on supporting method for deep rock roadway with broken and soft surrounding rock in Guqiao Coal Mine[J]. Rock and Soil Mechanics，2011，32(10)：3 097-3 104.(in Chinese))
[26]	郑可跃，施成华，雷明锋，等. 考虑松动效应的高地应力构造破碎带隧道稳定性分析及大变形支护设计优化[J]. 岩石力学与工程学报，2021，40(8)：1 603-1 613.(ZHENG Keyue，SHI Chenghua，LEI Mingfeng，et al. Stability analysis and support design optimization of large-deformation tunnels in structural fracture zones with high in-situ stresses considering loose effect[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(8)：1 603-1 613.(in Chinese))
[29]	李延河，杨战标，朱元广，等. 基于弱光纤光栅传感技术的围岩变形监测研究[J]. 煤炭科学技术，2022，https：//kns.cnki.net/kcms/ detail/11.2402.td.20220826.1716.006.html.(LI Yanhe，YANG Zhanbiao，ZHU Yuanguang，et al. Research on deformation monitoring of surrounding rock based on weak fiber grating sensing technology[J]. Coal science and Technology，2022，https：//kns.cnki.net/kcms/detail/ 11.2402. td.20220826.1716.006.html.(in Chinese))
[31]	KANG Y S，LIU Q S，XI H L，et al. Improved compound support system for coal mine tunnels in densely faulted zones：A case study of China?s Huainan coal field[J]. Engineering Geology，2018，240：10-20.