露天转地下采场围岩及覆岩变形破坏特征研究
|
摘要
以云南磷化集团有限公司晋宁磷矿为依托背景,借助数字照相量测技术,通过相似材料模拟试验,对20°、50°两种不同倾角条件下,露天转地下开采后,地下采场围岩与覆岩的变形破坏特征及动态演化过程进行了系统研究。结果表明:(1)地下采场围岩及覆岩的变形演化过程可划分为局部小范围微动、线性持续增大以及整体非线性剧烈垮塌3个阶段;(2)矿体倾角由20°增至50°后,边坡与地下采场围岩及覆岩的变形整体趋缓,采动影响范围小幅度缩减,沉降曲线则由非对称槽型变为碗型;(3)采场矿柱回收过程中,地下采场围岩及覆岩发生突发性失稳,呈现出明显的"多米诺骨牌效应"。
Based on the engineering background of Jingning phosphate mine of Yunnan Phosphate Chemical Group Co. Ltd.,the deformation and failure character and dynamical evolution process of underground surrounding rock and overlying strata were studied after transformation from open-pit to underground mining. The similar material simulating experiment and digital photographic measurement technology were used to investigating these issues,with the conditions of 20° ore body dips and 50° ore body dips. The results showed that:(1) the evolution process of mining deformation of underground surrounding rock and overlying strata could be divided into three stages,which contained small deformation in originally small and local scale stage,linear continuous increase stage and the whole nonlinear violent collapse stage.(2) with the ore body dip increasing from 20° to 50°,the mining influence area narrowed down in a small range,the deformation slowed down of underground surrounding rock and overlying strata,and the geometric shape of settlement curve changed from asymmetric slot to asymmetric bowl.(3) the abrupt occurrence of instability of underground surrounding rock occurred in the process of ore pillar recovery,and it presented the obvious "The Domino Effect".
Based on the engineering background of Jingning phosphate mine of Yunnan Phosphate Chemical Group Co. Ltd.,the deformation and failure character and dynamical evolution process of underground surrounding rock and overlying strata were studied after transformation from open-pit to underground mining. The similar material simulating experiment and digital photographic measurement technology were used to investigating these issues,with the conditions of 20° ore body dips and 50° ore body dips. The results showed that:(1) the evolution process of mining deformation of underground surrounding rock and overlying strata could be divided into three stages,which contained small deformation in originally small and local scale stage,linear continuous increase stage and the whole nonlinear violent collapse stage.(2) with the ore body dip increasing from 20° to 50°,the mining influence area narrowed down in a small range,the deformation slowed down of underground surrounding rock and overlying strata,and the geometric shape of settlement curve changed from asymmetric slot to asymmetric bowl.(3) the abrupt occurrence of instability of underground surrounding rock occurred in the process of ore pillar recovery,and it presented the obvious "The Domino Effect".
引文
[1]黄润秋,祁生文.工程地质:十年回顾与展望[J].工程地质学报,2017,25(2):257-276.(Huang Runqiu,Qi Shengwen.Engineering geology:review and prospect of past ten years in China[J].Journal of Engineering Geology,2017,25(2):257-276.(in Chinese))
[2]黄润秋,李渝生,严明.斜坡倾倒变形的工程地质分析[J].工程地质学报,2017,25(5):1165-1181.(Huang Runqiu,Li Yusheng,Yan Ming.The implication and evaluation of toppling failure in engineering geology practice[J].Journal of Engineering Geology,2017,25(5):1165-1181.(in Chinese))
[3]Allan M,Sergei D,Peter T.Interaction between the block cave and the pit slopes at palabras[J].Journal of the South African Institute of Mining and Metallurgy,2006,106(7):399-410.
[4]杜逢彬,郭微.基于突变理论的矿山转采隔离顶柱稳定性分析[J].地下空间与工程学报,2018,14(2):552-557.(Du Fengbin,Guo Wei.Stability Analysis on boundary pillar during open-pit to underground mining based on catastrophe theory[J].Chinese Journal of Underground Space and Engineering,2018,14(2):552-557.(in Chinese))
[5]Ezzeddin B,Mirhassani.Transition from open-pit to underground in the case of Chah-Gaz iron ore combined mining[J].Journal of Mining Science,2013,49(6):955-966.
[6]李聪,朱杰兵,汪斌,等.顺层边坡不同开挖锚固过程力学响应模型试验[J].地下空间与工程学报,2017,13(1):271-278.(Li Cong,Zhu Jiebin,Wang Bin,et al.Model tests for mechanical respond of bedding rock during different excavation and anchoring process[J].Chinese Journal of Underground Space and Engineering,2017,13(1):271-278.(in Chinese))
[7]孙世国,蔡美峰,王思敬.露天转地下开采边坡岩体滑移机制的探讨[J].岩石力学与工程学报,2000,19(1):126-129.(Sun Shiguo,Cai Meifeng,Wang Sijing.Study of sliding mechanism for slope due to the excavation from open pit into underground mine[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(1):126-129.(in Chinese))
[8]尹光志,李小双,李耀基.底摩擦模型模拟露天转地下开挖采空区影响下边坡变形破裂响应特征及其稳定性[J].北京科技大学学报,2012,34(3):231-238.(Yin Guangzhi,Li Xiaoshuang,Li Yaoji.Simulation on the deformation and failure response features and stability of a slope from open pit mining to underground mining under the effecting of excavation goaf by the floor friction model[J].Journal of University of Science and Technology Beijing,2012,34(3):231-238.(in Chinese))
[9]宋卫东,杜建华,杨幸才.深凹露天转地下开采高陡边坡变形与破坏规律[J].北京科技大学学报,2010,32(2):145-151.(Song Weidong,Du Jianhua,Yang Xincai.Deformation and failure of a high and steep slope due to transformation from deep open pit to underground mining[J].Journal of University of Science and Technology Beijing,2010,32(2):145-151.(in Chinese))
[10]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):2913-2923.(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):2913-2923.(in Chinese))
[11]李小双,支学艺,张东明,等.露天转地下采场覆岩变形破坏特征及其层厚效应研究[J].工程地质学报,2017,25(增1):78-89.(Li Xiaoshuang,Zhi Xueyi,Zhang Dongming,et al.Research on deformation and failure character and the thickness-effect of the overlying strata transition from open pit to underground mining[J].Journal of Engineering Geology,2017,25(Supp.1):78-89.(in Chinese))
[12]刘辉,陈文胜,冯夏庭,等.大冶铁矿露天转地下开采的离散元数值模拟研究[J].岩土力学,2004,25(9):126-129.(Liu Hui,Chen Wensheng,Feng Xiating,et al.Numerical modeling of Daye iron openpit-mine transferring to underground mining by discrete element method[J].Rock and Soil Mechanics,2004,25(9):126-129.(in Chinese))
[13]韩放,谢芳,王金安.露天转地下开采岩体稳定性三维数值模拟[J].北京科技大学学报,2006,28(6):509-514.(Han Fang,Xie Fang,Wang Jinan.3-D numerical simulation on the stability of rocks in transferred underground mining from open-pit[J].Journal of University of Science and Technology Beijing,2006,28(6):509-514.(in Chinese))
[14]史秀志,黄刚海,张舒,等.基于FLAC3D的复杂条件下露天转地下开采空区围岩变形及破坏特征[J].中南大学学报,2011,42(4):1710-1718.(Shi Xiuzhi,Huang Ganghai,Zhang Shu,et al.Goaf surrounding rock deformation and failure features using FLAC3Din underground mining shifted from open-pit in complex situation[J].Journal of Central South University,2011,42(4):1710-1718.(in Chinese))
[15]陈佳耀,史秀志,周健,等.基于正交设计的露天转地下空区变形预测及可靠度分析[J].中国有色金属学报,2016,26(11):2383-2392.(Chen Jiayao,Shi Xiuzhi,et al.Deformation prediction and reliability analysis of underground mining shifted from open-pit based on orthogonal experiment[J].The Chinese Journal of Nonferrous Metals,2016,26(11):2383-2392.(in Chinese))
[16]李元海.数字照相量测技术及其在岩土工程实验中的应用[M].徐州:中国矿业大学出版社,2009.(Li Yuanhai.Digital photogrammetry and its application in geotechnical engineering experiments[M].Xuzhou:China Mining University Press,2009.(in Chinese))
[17]宋卫东,付建新,王东旭.露天转地下开采围岩破坏规律的物理与数值模拟研究[J].煤炭学报,2012,37(2):186-191.(Song Weidong,Fu Jianxing,Wang Dongxu.Study on physical and numerical simulation of failure laws of wall rock due to transformation from open-pit to underground mining[J].Journal of China Coal Society,2012,37(2):186-191.(in Chinese))
[18]王云飞,钟福平.露天转地下开采边坡失稳数值模拟与实验研究[J].煤炭学报,2013,38(增1):64-69.(Wang Yunfei,Zhong Fuping.Study on slope instability in transition from open-pit to underground mining by similar experiment and numerical simulation[J].Journal of China Coal Society,2013,38(Supp.1):64-69.(in Chinese))
[19]张定邦.高陡边坡与崩落法地下开采相互影响机理模型试验研究[D].武汉:中国地质大学,2013.(Zhang Dingbang.Research of similarity model test on open pit to underground mining with super high-steep slope[D].Wuhan:China University of Geosciences,2013.(in Chinese))
[20]张亚民,马凤山,徐嘉谟,等.高应力区露天转地下开采岩体移动规律[J].岩土力学,2011,32(4):590-595.(Zhang Yaming,Ma Fengshan,Xu Jiamo,et al.Deformation laws of rock mass due to transform from open-pit to underground mining in high stress area[J].Rock and Soil Mechanics,2011,32(4):590-595.(in Chinese))
[21]贾太保.露天转地下开采诱发环境破坏的动态预测[J].中国安全生产科学技术,2015,11(3):99-104.(Jia Taibao.The dynamic prediction of environment damage induced by the excavation from open-pit into underground mine[J].Journal of Safety Science and Technology,2015,11(3):99-104.(in Chinese))
[22]曹家源.露天转地下开采引起的采坑围岩变形特征及其发生机理[D].青岛:山东科技大学,2015.(Cao Jiayuan.The deformation behavior occurrence mechanism of pit surrounding rock after the transition from open pit mining to underground mining[D].Qingdao:Shandong University of Science and Technology,2015.(in Chinese))
[23]邓清海,曹家源,张丽萍,等.转地下开采后龙首矿露天采坑底部隆起机理[J].采矿与安全工程学报,2015,32(4):677-682.(Deng Qinghai,Cao Jiayuan,Zhang Liping,et al.Uplift mechanism of the bottom of open pit after the transition from open-pit mining to underground mining in Longshou mine[J].Journal of Mining&Safety Engineering,2015,32(4):677-682.(in Chinese))
[2]黄润秋,李渝生,严明.斜坡倾倒变形的工程地质分析[J].工程地质学报,2017,25(5):1165-1181.(Huang Runqiu,Li Yusheng,Yan Ming.The implication and evaluation of toppling failure in engineering geology practice[J].Journal of Engineering Geology,2017,25(5):1165-1181.(in Chinese))
[3]Allan M,Sergei D,Peter T.Interaction between the block cave and the pit slopes at palabras[J].Journal of the South African Institute of Mining and Metallurgy,2006,106(7):399-410.
[4]杜逢彬,郭微.基于突变理论的矿山转采隔离顶柱稳定性分析[J].地下空间与工程学报,2018,14(2):552-557.(Du Fengbin,Guo Wei.Stability Analysis on boundary pillar during open-pit to underground mining based on catastrophe theory[J].Chinese Journal of Underground Space and Engineering,2018,14(2):552-557.(in Chinese))
[5]Ezzeddin B,Mirhassani.Transition from open-pit to underground in the case of Chah-Gaz iron ore combined mining[J].Journal of Mining Science,2013,49(6):955-966.
[6]李聪,朱杰兵,汪斌,等.顺层边坡不同开挖锚固过程力学响应模型试验[J].地下空间与工程学报,2017,13(1):271-278.(Li Cong,Zhu Jiebin,Wang Bin,et al.Model tests for mechanical respond of bedding rock during different excavation and anchoring process[J].Chinese Journal of Underground Space and Engineering,2017,13(1):271-278.(in Chinese))
[7]孙世国,蔡美峰,王思敬.露天转地下开采边坡岩体滑移机制的探讨[J].岩石力学与工程学报,2000,19(1):126-129.(Sun Shiguo,Cai Meifeng,Wang Sijing.Study of sliding mechanism for slope due to the excavation from open pit into underground mine[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(1):126-129.(in Chinese))
[8]尹光志,李小双,李耀基.底摩擦模型模拟露天转地下开挖采空区影响下边坡变形破裂响应特征及其稳定性[J].北京科技大学学报,2012,34(3):231-238.(Yin Guangzhi,Li Xiaoshuang,Li Yaoji.Simulation on the deformation and failure response features and stability of a slope from open pit mining to underground mining under the effecting of excavation goaf by the floor friction model[J].Journal of University of Science and Technology Beijing,2012,34(3):231-238.(in Chinese))
[9]宋卫东,杜建华,杨幸才.深凹露天转地下开采高陡边坡变形与破坏规律[J].北京科技大学学报,2010,32(2):145-151.(Song Weidong,Du Jianhua,Yang Xincai.Deformation and failure of a high and steep slope due to transformation from deep open pit to underground mining[J].Journal of University of Science and Technology Beijing,2010,32(2):145-151.(in Chinese))
[10]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):2913-2923.(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):2913-2923.(in Chinese))
[11]李小双,支学艺,张东明,等.露天转地下采场覆岩变形破坏特征及其层厚效应研究[J].工程地质学报,2017,25(增1):78-89.(Li Xiaoshuang,Zhi Xueyi,Zhang Dongming,et al.Research on deformation and failure character and the thickness-effect of the overlying strata transition from open pit to underground mining[J].Journal of Engineering Geology,2017,25(Supp.1):78-89.(in Chinese))
[12]刘辉,陈文胜,冯夏庭,等.大冶铁矿露天转地下开采的离散元数值模拟研究[J].岩土力学,2004,25(9):126-129.(Liu Hui,Chen Wensheng,Feng Xiating,et al.Numerical modeling of Daye iron openpit-mine transferring to underground mining by discrete element method[J].Rock and Soil Mechanics,2004,25(9):126-129.(in Chinese))
[13]韩放,谢芳,王金安.露天转地下开采岩体稳定性三维数值模拟[J].北京科技大学学报,2006,28(6):509-514.(Han Fang,Xie Fang,Wang Jinan.3-D numerical simulation on the stability of rocks in transferred underground mining from open-pit[J].Journal of University of Science and Technology Beijing,2006,28(6):509-514.(in Chinese))
[14]史秀志,黄刚海,张舒,等.基于FLAC3D的复杂条件下露天转地下开采空区围岩变形及破坏特征[J].中南大学学报,2011,42(4):1710-1718.(Shi Xiuzhi,Huang Ganghai,Zhang Shu,et al.Goaf surrounding rock deformation and failure features using FLAC3Din underground mining shifted from open-pit in complex situation[J].Journal of Central South University,2011,42(4):1710-1718.(in Chinese))
[15]陈佳耀,史秀志,周健,等.基于正交设计的露天转地下空区变形预测及可靠度分析[J].中国有色金属学报,2016,26(11):2383-2392.(Chen Jiayao,Shi Xiuzhi,et al.Deformation prediction and reliability analysis of underground mining shifted from open-pit based on orthogonal experiment[J].The Chinese Journal of Nonferrous Metals,2016,26(11):2383-2392.(in Chinese))
[16]李元海.数字照相量测技术及其在岩土工程实验中的应用[M].徐州:中国矿业大学出版社,2009.(Li Yuanhai.Digital photogrammetry and its application in geotechnical engineering experiments[M].Xuzhou:China Mining University Press,2009.(in Chinese))
[17]宋卫东,付建新,王东旭.露天转地下开采围岩破坏规律的物理与数值模拟研究[J].煤炭学报,2012,37(2):186-191.(Song Weidong,Fu Jianxing,Wang Dongxu.Study on physical and numerical simulation of failure laws of wall rock due to transformation from open-pit to underground mining[J].Journal of China Coal Society,2012,37(2):186-191.(in Chinese))
[18]王云飞,钟福平.露天转地下开采边坡失稳数值模拟与实验研究[J].煤炭学报,2013,38(增1):64-69.(Wang Yunfei,Zhong Fuping.Study on slope instability in transition from open-pit to underground mining by similar experiment and numerical simulation[J].Journal of China Coal Society,2013,38(Supp.1):64-69.(in Chinese))
[19]张定邦.高陡边坡与崩落法地下开采相互影响机理模型试验研究[D].武汉:中国地质大学,2013.(Zhang Dingbang.Research of similarity model test on open pit to underground mining with super high-steep slope[D].Wuhan:China University of Geosciences,2013.(in Chinese))
[20]张亚民,马凤山,徐嘉谟,等.高应力区露天转地下开采岩体移动规律[J].岩土力学,2011,32(4):590-595.(Zhang Yaming,Ma Fengshan,Xu Jiamo,et al.Deformation laws of rock mass due to transform from open-pit to underground mining in high stress area[J].Rock and Soil Mechanics,2011,32(4):590-595.(in Chinese))
[21]贾太保.露天转地下开采诱发环境破坏的动态预测[J].中国安全生产科学技术,2015,11(3):99-104.(Jia Taibao.The dynamic prediction of environment damage induced by the excavation from open-pit into underground mine[J].Journal of Safety Science and Technology,2015,11(3):99-104.(in Chinese))
[22]曹家源.露天转地下开采引起的采坑围岩变形特征及其发生机理[D].青岛:山东科技大学,2015.(Cao Jiayuan.The deformation behavior occurrence mechanism of pit surrounding rock after the transition from open pit mining to underground mining[D].Qingdao:Shandong University of Science and Technology,2015.(in Chinese))
[23]邓清海,曹家源,张丽萍,等.转地下开采后龙首矿露天采坑底部隆起机理[J].采矿与安全工程学报,2015,32(4):677-682.(Deng Qinghai,Cao Jiayuan,Zhang Liping,et al.Uplift mechanism of the bottom of open pit after the transition from open-pit mining to underground mining in Longshou mine[J].Journal of Mining&Safety Engineering,2015,32(4):677-682.(in Chinese))
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |