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| Numerical analysis and fluid-solid coupling model tests of coal mining under loose confined aquifer |
| LI Li-ping1, LI Shu-cai1, LI Shu-chen1, FENG Xian-da1, LI Guo-ying1, LIU Bin1, WANG Jing2, XU Zhen-hao1 |
| 1. Research Center of Geotechnical Engineering, Shandong University, Jinan 250061, China; 2. Optical Fiber Sensing Technology and Engineering Research Center, Shandong University, Jinan 250061, China |
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Abstract To study the stability of coal mining under loose confined aquifer, fluid-solid coupling model technology is newly developed, and an extensible geomechanical model system under stress and seepage loading is established. Major improvements in the tests are made in terms of similar materials of fluid-solid and advanced measurement methods/techniques. By using the new similar materials of fluid-solid, true reappearance of catastrophe evolution process for the water inrush induced by mining disturbance is obtained, and multivariate precursor information for real time water inrush is collected by means of the fiber bragg grating technology, acoustic emission technique and resistivity tomography technology. A numerical method considering the coupling effect of multi-physics field is adopted in order to know the coupling evolution law of stress field, displacement field and seepage field in the catastrophe evolution process of water inrush and the response characteristics of precursor information for multi-physics field of water inrush are analyzed. Based on the results of model test and numerical simulation, rock stress suddenly decreases after sustainable growth when the water-resistant key strata rupture, and rock displacement suddenly jumps after sustainable growth, but there exits a stable surging segment in which precursor information of water inrush is contained before jumping appears, and rock seepage suddenly decreases after continuous decrease, but there exits an abnormal fluctuating segment in which precursor information of water inrush is contained long before water inrush happens, and rock apparent resistivity and acoustic
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Received: 17 May 2012
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[1] 缪协兴. 采动岩体的力学行为研究与相关工程技术创新进展综述[J]. 岩石力学与工程学报, 2010,2910:1988-1998. MIAO Xie-xing.
Review of research on mechanical behaviors of mining rock mass and its related engineering technological innovation progress[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 2910: 1988-1998. (in Chinese)
[2] WOLKERSDORFER Christian, BOWELL Rob. Contemp- orary reviews of mine water studies in Europe, part 1[J]. Mine Water and the Environment, 2004,23:162-182.
[3] WOLKERSDORFER Christian, BOWELL Rob. Contem- porary reviews of mine water studies in Europe, part 2[J]. Mine Water and the Environment, 2005,24:2-37.
[4] 王永红,沈 文. 中国煤矿水害预防及治理[M]. 北京: 煤炭工业出版社, 1996.WANG Yong-hong.
SHEN Wen. Prevention and treatment of the water disaster of coal mine in China[M]. Beijing: China Coal Industry Publishing House, 1996.(in Chinese)
[5] ANDREAS Mende, ALLAN Astorga, DETLEV Neumann. Strategy for groundwater management in developing countries: a case study in northern Costa Rica[J]. Journal of Hydrology, 2007,3341/2:109-124.
[6] TULLEN P, TURBERG P, PARRIAUX A. Radiomag- netotelluric mapping, groundwater numerical modeling and 18-Oxygen isotopic data as combined tools to determine the hydro geological system of a landslide prone area[J]. Engineering Geology, 2006,873/4:195-204.
[7] 缪协兴,陈荣华,白海波. 保水开采隔水关键层的基本概念及力学分析[J]. 煤炭学报, 2007,326:561-564. MIAO Xie-xing, CHEN Rong-hua, BAI Hai-bo.
Fundam- ental concepts and mechanical analysis of water-resisting key strata in water-preserved mining[J]. Journal of China Coal Society, 2007, 326: 561-564. (in Chinese)
[8] VERBOVSEK Timotej, VESELI Miran. Factors influencing the hydraulic properties of wells in dolomite aquifers of Slovenia[J]. Hydrogeology Journal, 2008,16:779-795.
[9] 白海波,茅献彪,吴 宇,等. 高压奥灰水大型逆断层下盘煤层安全开采研究[J]. 岩石力学与工程学报, 2009,282:246-252. BAI Hai-bo, MAO Xian-biao, WU Yu, et al. Research on water-reserved mining with high water pressure under large-scale thrust-fault in Ordovician karst[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 282
[10] CHARLES A CravottaIII, SUZANNE J Ward, JANE M Hammarstrom. Down flow limestone beds for treatment of net-acidic, Oxic, Iron-Laden drainage from a flooded anthracite mine, Pennsylvania, USA: 2. Laboratory evaluation[J]. Mine Water Environ, 2008,27:86-99.
[11] 武 强,朱 斌,刘守强. 矿井断裂构造带滞后突水的流-固耦合模拟方法分析与滞后时间确定[J]. 岩石力学与工程学报, 2011,301:93-104. WU Qiang, ZHU Bin, LIU Shou-qiang.
Flow-solid coupling simulation method analysis and time identification of lagging water-inrush near mine fault belt[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 301: 93-104. (in Chinese)
[12] 李利平,石少帅,李术才,等. 外载扰动诱发灾害发生的突变机理及其非线性动力特征[J]. 煤炭学报, 2011,368:1357-1364. LI Li-ping, SHI Shao-shuai, LI Shu-cai, et al. Mutation mechanism analysis and nonlinear dynamic characteristics on geological hazards triggered by external disturbance[J]. Journal of China Coal Society, 2011, 368
[13] 乔 伟,李文平,孙如华,等. 煤矿特大动力突水动力冲破带形成机理研究[J]. 岩土工程学报, 2011,3311:1726-1733. QIAO Wei, LI Wen-ping, SUN Ru-hua, et al. Formation mechanism of dynamic impact failure zone of super dynamic water inrush in coal mine[J]. Chinese Journal of Geotechnical Engineering, 2011, 3311
[14] 刘天泉. 露头煤柱优化设计理论与技术[M]. 北京: 煤炭工业出版社, 1998:42-48. LIU Tian-quan.
Theory and techniques for optimal design of outcrop coal pillar[M]. Beijing: China Coal Industry Publishing House, 1998: 42-48. (in Chinese)
[15] 陈陆望,桂和荣,李一帆. UDEC 模拟厚松散层及超薄覆岩条件下开采防水煤柱覆岩突水可能性[J]. 水文地质工程地质, 20071:53-56. CHEN Lu-wang, GUI He-rong, LI Yi-fan.
UDEC simulation of the water pouring probability in exploiting waterproof coal pillars under the conditions of thick loose bed and ultra thin overlying strata[J]. Hydrogeology and Engineering Geology, 20071: 53-56. (in Chinese)
[16] 缪协兴,白海波. 华北奥陶系顶部碳酸岩层隔水特性及分布规律[J]. 煤炭学报, 2011,362:185-193. MIAO Xie-xing, BAI Hai-bo.
Water-resisting characteristics and distribution rule of carbonate strata in the top of Ordovician in North China [J]. Journal of China Coal Society, 2011, 362: 185-193. (in Chinese)
[17] 乔 伟,李文平,李小琴. 采场顶板离层水“静水压涌突水”机理及防治[J]. 采矿与安全工程学报, 2011,281:96-104. QIAO Wei, LI Wen-ping, LI Xiao-qin.
Mechanism of “Hydrostatic Water-Inrush” and countermeasures for water inrush in roof bed separation of a mining face[J]. Journal of Mining & Safety Engineering, 2011, 281: 96-104. (in Chinese)
[18] 许家林,陈稼轩,蒋 坤. 松散承压含水层的载荷传递作用对关键层复合破断的影响[J]. 岩石力学与工程学报, 2007,264:699-704. XU Jia-lin, CHEN Jia-xuan, JIANG Kun. Effect of load transfer of unconsolidated confined aquifer on compound breakage of key strata[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 264
[19] 娄金福,许家林,庄德林,等. 松散承压含水层载荷传递机制的实验研究[J]. 采矿与安全工程学报, 2007,241:47-50. LOU Jin-fu, XU Jia-lin, ZHUANG De-lin, et al. Experimental study of load transfer mechanism of unconsolidated confined aquifer[J]. Journal of Mining and Safety Engineering, 2007, 241
[20] 郝宪杰,许家林,朱卫兵,等. 高承压松散含水层下支架合理工作阻力的确定[J]. 采矿与安全工程学报, 2010,273:416-420. HAO Xian-jie, XU Jia-lin, ZHU Wei-bing, et al. Determination of reasonable support resistance when mining under unconsolidated highly-pressured confined aquifer[J]. Journal of Mining and Safety Engineering, 2010, 273
[21] 唐守锋,童敏明,秦海鹏,等. 突水过程煤岩破裂声发射实验系统的研究[J]. 采矿与安全工程学报, 2010,273:429-437. TANG Shou-feng, TONG Min-ming, QIN Hai-peng, et al. The acoustic emission experiment system of rock outburst in water inrush[J]. Journal of Mining and Safety Engineering, 2010, 273
[22] 刘树才,刘鑫明. 采动影响下导水构造电性变化的视电阻率特征分析[J]. 采矿与安全工程学报, 2010,273:316-321. LIU Shu-cai, LIU Xin-ming.
Characteristics of apparent resistivity with the electrical changing of water conducted structures under the mining-induced effect[J]. Journal of Mining and Safety Engineering, 2010, 273: 316-321. (in Chinese)
[23] 刘盛东,杨 彩,赵立瑰. 含水层渗流突变过程地电场响应的物理模拟[J]. 煤炭学报, 2011,365:772-777. LIU Sheng-dong, YANG Cai, ZHAO Li-gui.
Physical simulation research on response to geoelectricity of the aquifer in seepage mutation process[J]. Journal of China Coal Society, 2011, 365: 772-777. (in Chinese)
[24] 王晓振,许家林,朱卫兵,等. 松散承压含水层水位变化与顶板来压的联动效应及其应用研究[J]. 岩石力学与工程学报, 2011,309:1872-1881. WANG Xiao-zhen, XU Jia-lin, ZHU Wei-bing, et al. Research on connected effect between water level variation of unconsolidated confined aquifer and roof weighing and its application[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 309
[25] 胡耀青,赵旭升,杨 栋. 三维固流耦合相似模拟理论与方法[J]. 辽宁工程技术大学学报, 2007,262:204-206. HU Yao-qing, ZHAO Yang-sheng, YANG Dong. Simulation theory & method of 3D solid-liquid coupling[J]. Journal of Liaoning Technical University, 2007, 262
[26] 李树忱,冯现大,李术才,等. 新型流固耦合相似材料的研制及其应用[J]. 岩石力学与工程学报, 2010,292:281-288. LI Shu-chen, FENG Xian-da, LI Shu-cai, et al. Research and development of a new similar material for solid-fluid coupling and its application[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 292
[27] 张 杰,侯中杰. 固-液耦合试验材料的研究[J]. 岩石力学与工程学报, 2004,2318:3157-3161. ZHANG Jie, HOU Zhong-jie.
Experimental study on simulation materials for solid-liquid coupling[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 2318: 3157-3161. (in Chinese)
[28] 冯现大,李树忱,李术才,等. 矿井突水模型试验中光纤传感器的研制及其应用[J]. 煤炭学报, 2010,352:283-287. FENG Xian-da, LI Shu-chen, LI Shu-cai, et al. The development of fiber optic bragg grating sensors and their applications to the mine water-inrush model test[J]. Journal of China Coal Society, 2010, 352
[29] 陈红江,李夕兵,刘爱华,等. 水下开采顶板突水相似物理模型试验研究[J]. 中国矿业大学报, 2010,396:854-859. CHEN Hong-jiang, LI Xi-bing, LIU Ai-hua, et al. Physical simulation modeling of roof water inrush in underwater mining[J]. Journal of China University of Mining and Technology, 2010, 396
[30] 张庆松,高 阳,李术才,等矿井含水构造附近采动岩体的温度响应特征相似模拟研究[J]. 岩石力学与工程学报, 2011, 307: 1356-1362. ZHANG Qing-song, GAO Yang,LI Shu-cai, et al. Similarity simulation study of temperature response feature of rock mass affected by mining around water-bearing structure[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 307:1356-1362. (in Chinese)
[31] 李利平. 高风险岩溶隧道突水灾变演化机制及其应用研究[D]. 济南: 山东大学, 2009.LI Li-ping.
Study on catastrophe evolution mechanism of karst water inrush and its engineering application of high risk karst tunnel[D]. Jinan: Shandong University, 2009. (in Chinese)
[32] 杨天鸿,唐春安,李连崇,等. 非均质岩石破裂过程渗透率演化规律研究[J]. 岩石力学与工程学报, 2004,235:758-762. YANG Tian-hong, TANG Chun-an, LI Lian-chong, et al. Study on permeability evolution in failure process of inhomogeneous rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 235
[33] 李连崇,杨天鸿,唐春安,等. 岩石水压致裂过程的耦合分析[J]. 岩石力学与工程学报, 2003,227:1060-1066. LI Lian-chong, YANG Tian-hong, TANG Chun-an, et al. Coupling analysis on hydraulic frittering process of rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 227
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