动态扰动下硬岩矿柱破裂失稳演化特征试验

doi:10.13722/j.cnki.jrme. 2017.0435

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摘要

为揭示多次开挖扰动下硬岩矿柱破裂失稳演化规律，以典型铁矿床为物理原型，运用VIC–3D非接触全场应变测量设备、应力与声发射监测系统，开展大尺度二维相似物理模拟试验。研究结果表明，矿柱在水平和垂直相邻矿房开挖过程中会发生多重叠加损伤，第一水平矿房间柱和中间矿房顶柱的损伤破坏严重，力学特性劣化程度高。在分析矿柱损伤、大变形、失稳垮塌等不同阶段演化特征的基础上，基于普氏压力拱理论，建立多水平矿房开挖矿柱失稳演化模型。矿房开挖初期矿柱处于低损伤阶段，属于稳定间歇期；随着矿柱损伤加重，导致矿柱失稳，顶板冒落，进入破坏突发期。矿柱损伤与失稳是引起空区垮塌的关键因素，应运用位移、声发射和应力等监测手段对损伤严重区域进行监测，在进入破坏期前采取有效的控制措施。

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	卢宏建1
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	张松林1
	张九零1
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关键词 ：岩石力学, 矿柱, 动态扰动, 破裂失稳, 演化特征

Abstract：

In order to reveal the crack and destabilization evolvement laws of hard rock pillars under dynamic excavation，taking typical iron deposit as physical prototype，the large scale model experiment was carried out using VIC–3D strain measurement equipment of non-contact and in-plane and stress monitoring system and acoustic emission. The results of research indicate that multiple superimposed damages will occur in pillars during excavation of adjacent stopes in horizontal and vertical directions，the barrier pillars and central top pillar of first layer are damaged seriously and show a higher degree of degradation of mechanical properties. On the basis of the analysis of evolution characteristics of pillar damage，large deformation，instability collapse at different stages and based on the compressive arch theory，the destabilization evolution mode of pillars failure was established. Pillars are in low damage stages during the early excavation，which belongs to stable intermittent period. The increase of pillar damages leads to instability falling of barrier and top pillar，which belongs to bursting period. Pillar damages and instability were key factors causing the collapse of goaf，so the displacement，acoustic emission and stress monitoring methods should be used to monitor the severely damaged area，and effective control measures should be taken before the failure period of the pillars.

Key words： rock mechanics pillars dynamic disturbance crack and destabilization evolution characteristics

引用本文:

卢宏建1，2，梁鹏1，甘德清1，2，张松林1，张九零1，2. 动态扰动下硬岩矿柱破裂失稳演化特征试验[J]. 岩石力学与工程学报, 2017, 36(S2): 3713-3722.
LU Hongjian1，2，LIANG Peng1，GAN Deqing1，2，ZHANG Songlin1，ZHANG Jiuling1，2. Crack and destabilization evolution characteristics test on hard rock pillars under dynamic disturbance. , 2017, 36(S2): 3713-3722.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme. 2017.0435 或 https://rockmech.whrsm.ac.cn/CN/Y2017/V36/IS2/3713

[1] BASARIR H，OGE I F，AYDIN O. Prediction of the stresses around main and tail gates during top coal caving by 3D numerical analysis[J]. International Journal of Rock Mechanics and Mining Sciences，2015，76(1)：88–97.

[2] GAO F，ZHOU K P，DONG W J. Similar material simulation of time series system for induced caving of roof in continuous mining under backfill[J]. Journal of Central South University of Technology，2008，15(3)：356–360.

[3] SINGH G S P，SINGH U K. Assessment of goaf characteristics and compaction in longwall caving[J]. Mining Technology，2013，120(4)：222–232.

[4] WANG J A，SHANG X C，MA H T. Investigation of catastrophic ground collapse in Xingtai gypsum mines in China[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(8)：1 480–1 499.

[5] 孙琦，魏晓刚，卫星，等. 采空区矿柱流变特性对露天矿边坡稳定性的影响研究[J]. 中国安全科学学报，2014，24(8)：85–91.(SUN Qi，WEI Xiaogang，WEI Xing，et al. Study on effects of pillars rheological properties on open-pit slope stability[J]. China Safety Science Journal，2014，24(8)：85–91.(in Chinese))

[6] 于跟波，杨鹏，陈赞成. 缓倾斜薄矿体矿柱回采采场围岩稳定性研究[J]. 煤炭学报，2013，38(增2)：294–298.(YU Genbo，YANG Peng，CHEN Zancheng. Study on surrounding rock stability of pillar extraction in thin gently inclined ore body[J]. Journal of China Coal Society，2013，38(Supp.2)：294–298.(in Chinese))

[7] 李铁，刘诗杰，马海涛，等. 采空区顶板流变破断发展及灾变时间[J]. 中国有色金属学报，2016，26(3)：666–672.(LI Tie，LIU Shijie，MA Haitao，et al. Development and catastrophe time of rheological collapse in goaf roof[J]. The Chinese Journal of Nonfer rous Metals，2016，26(3)：666–672.(in Chinese))

[1] 姜耀东，杨英明，马振乾，等. 大面积巷式采空区覆岩破坏机理及上行开采可行性分析[J]. 煤炭学报，2016，41(4)：801–807.(JIANG Yaodong，YANG Yingming，MA Zhenqian，et al. Breakage mechanism of roof strata above widespread mined-out area with roadway mining method and feasibility analysis of upward mining[J]. Journal of China Coal Society，2016，41(4)：801–807.(in Chinese))

[1] 尹光志，李小双，魏作安，等. 边坡和采场围岩变形破裂响应特征的相似模拟试验研究[J]. 岩石力学与工程学报，2011，30(增1)：2 913–2 923.(YIN Guangzhi，LI Xiaoshuang，WEI Zuoan，et al. Similar simulation study of deformation and failure response features of slope and stope rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.1)：2 913–2 923.(in Chinese))

[2] 付宝杰，涂敏. 重复采动影响下采场底板隔水层裂隙演化规律试验研究[J]. 采矿与安全工程学报，2015，32(1)：54–58.(FU Baojie，TU Min. Experimental research on fracture evolution law of water-resisting in coal seam floor during re-mining[J]. Journal of Mining and Safety Engineering，2015，32(1)：54–58.(in Chinese))

[8] 来兴平，孙欢，单鹏飞，等. 急倾斜坚硬岩柱动态破裂“声–热”演化特征试验[J]. 岩石力学与工程学报，2015，34(11)：2 285–2 292. (LAI Xingping，SUN Huan，SHAN Pengfei，et al. Acoustic emission and temperature variation in failure process of hard rock pillars sandwiched between thick coal seams of extremely steep[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(11)：2 285– 2 292.(in Chinese))

[9] 程志恒，齐庆新，李宏艳，等. 近距离煤层群叠加开采采动应力–裂隙动态演化特征实验研究[J]. 煤炭学报，2016，41(2)：367–375.(CHENG Zhiheng，QI Qingxin，LI Hongyan，et al. Evolution of the superimposed mining induced stress-fissure field under extracting of close distance coal seam group[J]. Journal of China Coal Society，2016，41(2)：367–375.(in Chinese))

[10] 付建新，宋卫东，杜建华. 金属矿山采空区群形成过程中围岩扰动规律研究[J]. 岩土力学，2013，34(增1)：508–515.(FU Jianxin，SONG Weidong，DU Jianhua. Study of disturbance law for wall rock while goaf group formation in metal mines[J]. Rock and Soil Mechanics，2013，34(Supp.1)：508–515.(in Chinese))

[11] 刘长友，杨敬轩，于斌，等. 多采空区下坚硬厚层破断顶板群结构的失稳规律[J]. 煤炭学报，2014，39(3)：395–403.(LIU Changyou，YANG Jingxuan，YU Bin，et al. Destabilization regularity of hard thick roof group under the multi gob[J]. Journal of China Coal Society，2014，39(3)：395–403.(in Chinese))

[12] 徐文彬，潘卫东，刘辉. 动态扰动诱发嗣后充填采场灾变事故分析[J]. 采矿与安全工程学报，2015，32(1)：65–72.(XU Wenbin，PAN Weidong，LIU Hui. Analysis on the catastrophe mechanism of backfill stope resulting from dynamic disturbance[J]. Journal of Mining and Safety Engineering，2015，32(1)：65–72.(in Chinese))

[13] 姜立春，曾俊佳，贾晓川. 水平采空区群动态失稳演化过程及工程控制[J]. 辽宁工程技术大学学报：自然科学版，2016，35(8)：821–825.(JIANG Lichun，ZENG Junjia，JIA Xiaochuan. Dynamic failure process and engineering control of horizontal goaf group[J]. Journal of Liaoning Technical University：Natural Science，2016，35(8)：821–825.(in Chinese))

[14] 卢宏建，梁鹏，甘德清，等. 动态扰动下硬岩矿柱损伤演化特征[J]. 矿业研究与开发，2016，36(2)：62–65.(LU Hongjian，LIANG Peng，GAN Deqing，et al. Damage evolution characteristic of hard-rock pillars under dynamic disturbance[J]. Mining Research and Development，2016，36(2)：62–65.(in Chinese))

[15] 卢宏建，梁鹏，李嘉惠. 动态扰动下硬岩矿柱应力演化与地表沉降规律[J]. 金属矿山，2015，44(7)：6–10.(LU Hongjian，LIANG Peng，LI Jiahui. Stress evolution and surface subsidence laws of hard rock pillars under dynamic disturbance[J]. Metal Mine，2015，44(7)：6–10.(in Chinese))

[16] 卢宏建，梁鹏，卢小娜，等. 铁矿床物理模型相似材料正交配比试验[J]. 矿产保护与利用，2016，36(1)：30–34.(LU Hongjian，LIANG Peng，LU Xiaona，et al. Orthogonal proportioning text with similar material of iron deposit physical model[J]. Conservation and Utilization of Mineral Resources，2016，36(1)：30–34.(in Chinese))

[1] 卢宏建，梁鹏，顾乃满，等. 多次开挖扰动下采空区围岩应力演化数值模拟[J]. 矿产保护与利用，2016，36(6)：17–20.(LU Hongjian，LIANG Peng，GU Naiman，et al. Stress evolution numerical simulation of goaf surrounding rock under repetitious excavation disturbancel[J]. Conservation and Utilization of Mineral Resources，2016，36(6)：17–20.(in Chinese))

[2] 彭国喜. 西南山“关键块体”控制型滑坡的形成条件与失稳机理研究——以重庆武隆鸡尾山滑坡为例[硕士学位论文][D]. 成都：成都理工大学，2011.(PENG Guoxi. The research of the formative condition and instability mechanism of the landslide controlled by the key blocks in southwest mountainous-the cocktail mountain landslide in Chongqing Wulong，for example[M. S. Thesis][D]. Chengdu：Chengdu University of Technology，2011.(in Chinese))