巷道断面空间岩层变形与破坏演化特征光纤监测研究
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摘要
煤层开采过程中巷道围岩会发生变形、移动与破坏,其动态变化特征对巷道设计、支护等技术参数的选择具有重要的参考意义。论文结合淮南矿区某工作面回采进程,在煤巷中布设测试断面,通过钻孔布置分布式光纤传感器,对煤岩层变形与破坏过程中产生的应变参数进行实测与分析,讨论断面空间岩层变形发育规律及其采动影响特征。井下2个监测钻孔的16组监测数据分析结果表明:工作面回采过程中,底板岩层受采动影响发生变形产生位移特征明显,且受岩层界面控制,变形位置多自层面开始逐渐发育,探查区底板岩层破坏的最大深度达14.1 m,与电阻率CT结果基本一致,且超前应力显现明显,整体监测效果良好。认为分布式光纤测试技术可精确分辨采动作用下岩层的变形演化过程,有利于研究不同条件下岩层受力后发生变形及破裂的规律。
The deformation,movement and destroying of the surrounding rock in the laneway can happen during the mining of coal stratum. The dynamic change characteristics have important reference significance to the selection of the technical parameters such as laneway design and support. In the paper,combining the mining process of one working face in Huainan mine area,the testing section is laid in the coal laneway. Through laying the distributed fiber sensors in the drill hole,the strain parameters of rock stratum can be detected and analyzed during the deformation and failure processing of coal and rock strata. The law of deformation development of rock stratum in the section space and characteristics affected by mining can be discussed. The analysis results through the 16 groups monitoring data from 2 monitoring drill hole indicate that the producing shifting characteristics affected by mining inthe floor rock stratum are obvious during the mining process of working face, and the development of the deformation locations often start from bedding plane because of interface control of rock stratum. The maximum deformation depth of the floor rock stratum is 14. 1 m in the detection field,the results are basically consistent with the resistivity CT,and its appearing ahead of stress is very clear. All of the monitoring effect is well. The distributed fiber testing technology can be used as an effective method to distinguish accurately the evolutionary process of rock stratum deformation. It can make for studying deformation and destroy rules of rock stratum after stress in different conditions.
The deformation,movement and destroying of the surrounding rock in the laneway can happen during the mining of coal stratum. The dynamic change characteristics have important reference significance to the selection of the technical parameters such as laneway design and support. In the paper,combining the mining process of one working face in Huainan mine area,the testing section is laid in the coal laneway. Through laying the distributed fiber sensors in the drill hole,the strain parameters of rock stratum can be detected and analyzed during the deformation and failure processing of coal and rock strata. The law of deformation development of rock stratum in the section space and characteristics affected by mining can be discussed. The analysis results through the 16 groups monitoring data from 2 monitoring drill hole indicate that the producing shifting characteristics affected by mining inthe floor rock stratum are obvious during the mining process of working face, and the development of the deformation locations often start from bedding plane because of interface control of rock stratum. The maximum deformation depth of the floor rock stratum is 14. 1 m in the detection field,the results are basically consistent with the resistivity CT,and its appearing ahead of stress is very clear. All of the monitoring effect is well. The distributed fiber testing technology can be used as an effective method to distinguish accurately the evolutionary process of rock stratum deformation. It can make for studying deformation and destroy rules of rock stratum after stress in different conditions.
引文
Chai J,Yuan Q,Li Y,et al.2016.Experimental study on overlying strata deformation based on distributed optical fiber sensing[J].Chinese Journal of Rock Mechanics and Engineering,35(S2):3589-3596.
Cheng G,Shi B,Zhang P S,et al.2017.Physical model test study on deformation of overlying strata during cola mining with distributed fiber optic deformation monitoring[J].Journal of Engineering Geology,25(4):926-934.
Cheng J L,Yu S J.2000.Simulation experiment on the response of resistivity to deformation and failure of overburden[J].Chinese Journal of Geophysics,43(5):699-706.
Ding Y,Shi B,Cui H L,et al.2005.A fiber optic sensing net applied in slope monitoring based on Brillouin scattering[J].Chinese Journal of Geotechnical Engineering,27(3):338-342.
Fujihashi K,Uehara H,Okustu M,et al.2003.Development of a road disaster monitoring system using fiber optic distributed strain sensor[J].NTT Technical Review,39:420-428.
He M C,Xie H P,Peng S P,et al.2005.Study on rock mechanics in deep mining engineering[J].Chinese Journal of Rock Mechanics and Engineering,24(16):2803-2813.
Liu S D,Wu R X,Zhang P S,et al.2001.High density electric resistance method applied to monitor and measure overburden failure above seam[J].Coal Science and Technology,29(4):18-22.
Liu S L,Zhang D,Zhang P S,et al.2016.Deformation monitoring of overburden based on distributed optical fiber sensing[J].Journal of Engineering Geology,24(6):1118-1125.
Shi B,Xu H Z,Zhang D,et al.2004.Feasibility study on application of BOTDR to health monitoring for large infrastructure engineering[J].Chinese Journal of Rock Mechanics and Engineering,23(3):493-499.
Sun B Y,Zhang P S,Fu M R,et al.2017.Fiber optic test and results of failure law of floor strata in coal mining site[J].Journal of Hefei University of Technology(Natural Science),40(5):701-707.
Sun J,Wang L G,Tang F R,et al.2011.Microseismic monitoring failure characteristics of inclined coal seam floor[J].Rock and Soil Mechanics,32(5):1589-1595.
Sun Y J,Xu Z M.2008.Research on compositive geophysical methods in overburden rock failure detection for mining under Xiaolangdi reservoir[J].Safety in Coal Mines,(4):25-28.
Wei G Q,Shi B,Jia J X,et al.2009.Application of distributed optical fiber sensing to testing inner force of prefabricated pile[J].Chinese Journal of Geotechnical Engineering,31(6):911-916.
Xu S A,Zhang P S,Zhang D,et al.2015.Simulation study of fiber optic monitoring technology of surrounding rock deformation under deep mining conditions[J].Journal of Civil Structural Health Monitoring,5(5):563-571.
Zhan D,Zhang P S,Shi B,et al.2015.Monitoring and analysis of overburden deformation and failure using distributed fiber optic sensing[J].Chinese Journal of Geotechnical Engineering,37(5):952-957.
Zhang P S,Liu S D,Wu R X.2004.Observation of overburden failure of coal seam by CT of seismic wave[J].Chinese Journal of Rock Mechanics and Engineering,23(15):2510-2513.
Zhang P S,Sun B Y,Xu S A.2016.Simulation research on BOTDR-based monitoring over temperature field of water inrushing from coal floor[J].Journal of Chongqing Jiaotong University(Natural Science),35(5):28-31,49.
Zhang P S,Xu S A.2016.Development and application of mine fiber testing technology[J].Progress in Geophysics,31(3):1381-1389.
Zhang W Q,Zhang H R,Xu F J,et al.2000.Continuous exploration for the mining failure form of the incline and thin coal seam,s floor under the high depth[J].Coal Geology and Exploration,28(2):39-42.
柴敬,袁强,李毅,等.2016.采场覆岩变形的分布式光纤检测试验研究[J].岩石力学与工程学报,35(S2):3589-3596.
程刚,施斌,张平松,等.2017.采动覆岩变形分布式光纤物理模型试验研究[J].工程地质学报,25(4):926-934.
程久龙,于师建.2000.覆岩变形破坏电阻率响应特征的模拟实验研究[J].地球物理学报,43(5):699-706.
丁勇,施斌,崔何亮,等.2005.光纤传感网络在边坡稳定监测中的应用研究[J].岩土工程学报,27(3):338-342.
何满潮,谢和平,彭苏萍,等.2005.深部开采岩体力学研究[J].岩石力学与工程学报,24(16):2803-2813.
刘少林,张丹,张平松,等.2016.基于分布式光纤传感技术的采动覆岩变形监测[J].工程地质学报,24(6):1118-1125.
刘盛东,吴荣新,张平松,等.2001.高密度电阻率法观测煤层上覆岩层破坏[J].煤炭科学技术,29(4):18-22.
施斌,徐洪钟,张丹,等.2004.BOTDR应变监测技术应用在大型基础工程健康诊断中的可行性研究[J].岩石力学与工程学报,23(3):493-499.
孙斌杨,张平松,付茂如,等.2017.采场底板岩层破坏规律光纤测试方法与效果[J].合肥工业大学学报(自然科学版),40(5):701-707.
孙建,王连国,唐芙蓉,等.2011.倾斜煤层底板破坏特征的微震监测[J].岩土力学,32(5):1589-1595.
孙亚军,徐智敏.2008.小浪底水库下采煤覆岩破坏综合探测技术研究[J].煤矿安全,(4):25-28.
魏广庆,施斌,贾建勋,等.2009.分布式光纤传感技术在预制桩基桩内力测试中的应用[J].岩土工程学报,31(6):911-916.
张丹,张平松,施斌,等.2015.采场覆岩变形与破坏的分布式光纤监测与分析[J].岩土工程学报,37(5):952-957.
张平松,刘盛东,吴荣新.2004.地震波CT技术探测煤层上覆岩层破坏规律[J].岩石力学与工程学报,23(15):2510-2513.
张平松,孙斌杨,许时昂.2016a.基于BOTDR的煤层底板突水温度场监测模拟研究[J].重庆交通大学学报(自然科学版),35(5):28-31,49.
张平松,许时昂.2016b.矿井光纤测试技术发展与应用研究[J].地球物理学进展,31(3):1381-1389.
张文泉,张红日,徐方军,等.2000.大采深倾斜薄煤层底板采动破坏形态的连续探测[J].煤田地质与勘探,28(2):39-42.
Cheng G,Shi B,Zhang P S,et al.2017.Physical model test study on deformation of overlying strata during cola mining with distributed fiber optic deformation monitoring[J].Journal of Engineering Geology,25(4):926-934.
Cheng J L,Yu S J.2000.Simulation experiment on the response of resistivity to deformation and failure of overburden[J].Chinese Journal of Geophysics,43(5):699-706.
Ding Y,Shi B,Cui H L,et al.2005.A fiber optic sensing net applied in slope monitoring based on Brillouin scattering[J].Chinese Journal of Geotechnical Engineering,27(3):338-342.
Fujihashi K,Uehara H,Okustu M,et al.2003.Development of a road disaster monitoring system using fiber optic distributed strain sensor[J].NTT Technical Review,39:420-428.
He M C,Xie H P,Peng S P,et al.2005.Study on rock mechanics in deep mining engineering[J].Chinese Journal of Rock Mechanics and Engineering,24(16):2803-2813.
Liu S D,Wu R X,Zhang P S,et al.2001.High density electric resistance method applied to monitor and measure overburden failure above seam[J].Coal Science and Technology,29(4):18-22.
Liu S L,Zhang D,Zhang P S,et al.2016.Deformation monitoring of overburden based on distributed optical fiber sensing[J].Journal of Engineering Geology,24(6):1118-1125.
Shi B,Xu H Z,Zhang D,et al.2004.Feasibility study on application of BOTDR to health monitoring for large infrastructure engineering[J].Chinese Journal of Rock Mechanics and Engineering,23(3):493-499.
Sun B Y,Zhang P S,Fu M R,et al.2017.Fiber optic test and results of failure law of floor strata in coal mining site[J].Journal of Hefei University of Technology(Natural Science),40(5):701-707.
Sun J,Wang L G,Tang F R,et al.2011.Microseismic monitoring failure characteristics of inclined coal seam floor[J].Rock and Soil Mechanics,32(5):1589-1595.
Sun Y J,Xu Z M.2008.Research on compositive geophysical methods in overburden rock failure detection for mining under Xiaolangdi reservoir[J].Safety in Coal Mines,(4):25-28.
Wei G Q,Shi B,Jia J X,et al.2009.Application of distributed optical fiber sensing to testing inner force of prefabricated pile[J].Chinese Journal of Geotechnical Engineering,31(6):911-916.
Xu S A,Zhang P S,Zhang D,et al.2015.Simulation study of fiber optic monitoring technology of surrounding rock deformation under deep mining conditions[J].Journal of Civil Structural Health Monitoring,5(5):563-571.
Zhan D,Zhang P S,Shi B,et al.2015.Monitoring and analysis of overburden deformation and failure using distributed fiber optic sensing[J].Chinese Journal of Geotechnical Engineering,37(5):952-957.
Zhang P S,Liu S D,Wu R X.2004.Observation of overburden failure of coal seam by CT of seismic wave[J].Chinese Journal of Rock Mechanics and Engineering,23(15):2510-2513.
Zhang P S,Sun B Y,Xu S A.2016.Simulation research on BOTDR-based monitoring over temperature field of water inrushing from coal floor[J].Journal of Chongqing Jiaotong University(Natural Science),35(5):28-31,49.
Zhang P S,Xu S A.2016.Development and application of mine fiber testing technology[J].Progress in Geophysics,31(3):1381-1389.
Zhang W Q,Zhang H R,Xu F J,et al.2000.Continuous exploration for the mining failure form of the incline and thin coal seam,s floor under the high depth[J].Coal Geology and Exploration,28(2):39-42.
柴敬,袁强,李毅,等.2016.采场覆岩变形的分布式光纤检测试验研究[J].岩石力学与工程学报,35(S2):3589-3596.
程刚,施斌,张平松,等.2017.采动覆岩变形分布式光纤物理模型试验研究[J].工程地质学报,25(4):926-934.
程久龙,于师建.2000.覆岩变形破坏电阻率响应特征的模拟实验研究[J].地球物理学报,43(5):699-706.
丁勇,施斌,崔何亮,等.2005.光纤传感网络在边坡稳定监测中的应用研究[J].岩土工程学报,27(3):338-342.
何满潮,谢和平,彭苏萍,等.2005.深部开采岩体力学研究[J].岩石力学与工程学报,24(16):2803-2813.
刘少林,张丹,张平松,等.2016.基于分布式光纤传感技术的采动覆岩变形监测[J].工程地质学报,24(6):1118-1125.
刘盛东,吴荣新,张平松,等.2001.高密度电阻率法观测煤层上覆岩层破坏[J].煤炭科学技术,29(4):18-22.
施斌,徐洪钟,张丹,等.2004.BOTDR应变监测技术应用在大型基础工程健康诊断中的可行性研究[J].岩石力学与工程学报,23(3):493-499.
孙斌杨,张平松,付茂如,等.2017.采场底板岩层破坏规律光纤测试方法与效果[J].合肥工业大学学报(自然科学版),40(5):701-707.
孙建,王连国,唐芙蓉,等.2011.倾斜煤层底板破坏特征的微震监测[J].岩土力学,32(5):1589-1595.
孙亚军,徐智敏.2008.小浪底水库下采煤覆岩破坏综合探测技术研究[J].煤矿安全,(4):25-28.
魏广庆,施斌,贾建勋,等.2009.分布式光纤传感技术在预制桩基桩内力测试中的应用[J].岩土工程学报,31(6):911-916.
张丹,张平松,施斌,等.2015.采场覆岩变形与破坏的分布式光纤监测与分析[J].岩土工程学报,37(5):952-957.
张平松,刘盛东,吴荣新.2004.地震波CT技术探测煤层上覆岩层破坏规律[J].岩石力学与工程学报,23(15):2510-2513.
张平松,孙斌杨,许时昂.2016a.基于BOTDR的煤层底板突水温度场监测模拟研究[J].重庆交通大学学报(自然科学版),35(5):28-31,49.
张平松,许时昂.2016b.矿井光纤测试技术发展与应用研究[J].地球物理学进展,31(3):1381-1389.
张文泉,张红日,徐方军,等.2000.大采深倾斜薄煤层底板采动破坏形态的连续探测[J].煤田地质与勘探,28(2):39-42.
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