|本期目录/Table of Contents|

[1]贾明涛,史存丁,余传玉.综合拉底、扩漏和出矿全过程的底部结构安全性颗粒流模拟技术研究[J].中国安全生产科学技术,2019,15(4):25-31.[doi:10.11731/j.issn.1673-193x.2019.04.004]
　JIA Mingtao,SHI Cunding,YU Chuanyu.Particle flow simulation technology of bottom structure safety of the whole process of comprehensive undercutting, enlargement of drawpoint and ore drawing[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(4):25-31.[doi:10.11731/j.issn.1673-193x.2019.04.004]
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综合拉底、扩漏和出矿全过程的底部结构安全性颗粒流模拟技术研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年4期
页码:
25-31
栏目:
学术论著
出版日期:
2019-04-30

文章信息/Info

Title:
Particle flow simulation technology of bottom structure safety of the whole process of comprehensive undercutting, enlargement of drawpoint and ore drawing
文章编号:
1673-193X(2019)-03-0025-07
作者:
贾明涛; 史存丁; 余传玉
（中南大学 资源与安全工程学院，湖南 长沙 410083）
Author(s):
JIA Mingtao; SHI Cunding; YU Chuanyu
(School of Resources and Safety Engineering, Central South University, Changsha Hunan 410083, China)
关键词:
底部结构; 节理扩展演化; 破坏过程; 颗粒流方法; 建模与参数反演
Keywords:
bottom structure;  joint propagation evolution;  failure process;  particle flow method;  modeling and parameter inversion
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2019.04.004
文献标志码:
A
摘要:
为探明自然崩落法从拉底崩落至出矿全过程中底部结构节理连续扩展过程与破坏过程规律，采用PFC2D软件，结合RocLab软件反演节理岩体参数，建立229 m×129 m的岩体扩大模型，对拉底崩落至出矿过程进行连续综合计算。研究结果表明：模拟结果及破坏现象与现场监测结果相近，建模与细观参数反演方法适用于该类岩体工程研究；裂纹扩展贯通导致岩体失稳破坏，破坏过程与裂纹扩展具有相对应的阶段特征，裂纹扩展分为崩落前稳定扩展期，崩落与聚矿槽开挖过程加速扩展期和后续持续扩展期；结构破坏分为蕴育过程，扰动失稳过程和宏观破坏过程；较大范围的宏观破坏主要在出矿阶段。该模拟方法与结果可为底部结构维护以及节理岩体长期稳定性研究提供参考。
Abstract:
In order to find out the law of continuous expansion and failure process of bottom structure joints during the whole process of natural caving from the bottom caving to ore drawing, a 229 m*129 m rock mass enlargement model is established by using PFC2D software and Roclab software to invert the jointed rock mass parameters, and the continuous comprehensive calculation of the bottom caving to ore drawing process is carried out. The results show that the simulation results and failure phenomena are similar to the onsite monitoring results. The modeling and mesoparameters inversion are suitable for this kind of rock mass engineering research. Corresponding stage characteristics, crack propagation is divided into stable expansion period before caving, acceleration and expansion period of caving and mining trench excavation process and subsequent continuous expansion period.The structural failure process can be divided into cultivation process, disturbance instability process, and macrodamage process. A wide range of macrodamage in a larger scale is mainly at stage of the oredrawing. The simulation method and results can provide reference for maintenance of the bottom structure and the longterm stability study of jointed rock mass.

参考文献/References:

［1］曹辉,杨小聪,王贺,等.自然崩落法可崩性研究现状及发展趋势［J］.中国矿业,2015,24(10):113-117. CAO Hui, YANG Xiaocong, WANG He, et al. State of predicting study for block caving［J］. China Mining Magezine, 2015,24(10): 113-117.
［2］戴庆, 童光煦. 用边界元法模拟崩落过程中底部结构应力变化规律［J］. 金属矿山, 1989(8): 7-12，21. DAI Qing, TONG Guangxu. Simulation of the variation of stress in the bottom structure during the process of caving by boundary element method［J］. Metallic Metals,1989(8): 7-12，21.
［3］王利, 陈亚娟, 高谦. 拉底诱导的岩体崩落过程区数值模拟［J］. 有色金属(矿山部分), 2009, 61(3): 44-48. WANG Li, CHEN Yajuan, GAO Qian. Numerical simulation oncavingprocess zoneinduced by undercut［J］. Nonferrous Metals (Minerals), 2009, 61(3): 44-48.
［4］梁江波,刘华武,冯兴隆.自然崩落法超前拉底数值模拟研究［J］.矿业研究与开发,2017,37(2):93-96. LIANG Jiangbo, LIU Huawu, FENG Xinglong. Numerical simulation study on advanced undercutting in block caving method［J］. Mining Research & Development, 2017,37(2): 93-96.
［5］张少杰,夏长念,陈小伟.两种拉底方案的底部结构应力变化对比分析［J］.中国矿山工程,2017,46(2):14-18. ZHANG Shaojie, XIA Changnian, CHEN Xiaowei. Comparative analysis of stress changes in the bottom structure of two kinds of bottoming schemes［J］. China Mine Engineering, 2017, 46(2): 14-18.
［6］王连庆,高谦,王建国,等.自然崩落采矿法的颗粒流数值模拟［J］.北京科技大学学报,2007(6):557-561. WANG Lianqing, GAO Qian, WANG Jianguo, et al. Numerical simulation of particle flow in natural caving mining method［J］. Journal of University of Science and Technology Beijing, 2007（6）: 557-561.
［7］周杭,侯克鹏,梁维,等.基于PFC2D的自然崩落法数值模拟［J］.有色金属,2017,69(2):67-72，77. ZHOU Hang, HOU Kepeng, LIANG Wei, et al.Numerical simulation of natural caving method based on PFC2D［J］.Nonferrous Metals,2017,69(2):67-72，77.
［8］YANG X, KULATILAKE P H S W, JING H, et al. Numerical simulation of a jointed rock block mechanical behavior adjacent to an underground excavation and comparison with physical model test results ［J］. Tunnelling and Underground Space Technology , 2015,50: 129-142 .
［9］LISJAK A , GRASSELLI G . A review of discrete modeling techniques for fracturing processes in discontinuous rock masses［J］. Journal of Rock Mechanics & Geotechnical Engineering, 2014, 6(4):301-314.
［10］ZHANGY, STEAD D, ELMO D. Characterization of strength and damage of hard rock pillars using a synthetic rock mass method［J］. Computers and Geotechnics ,2015,65:56-72.
［11］HOEK E, MARTIN C D. Fracture initiation and propagation in intact rock—A review［J］. Journal of Rock Mechanics and Geotechnical Engineering, 2014, 6(4):287-300.
［12］BAHAADDINI M, HAGAN P C, MITRA R, et al. Experimental and numerical study of asperity degradation in the direct shear test［J］. Engineering Geology, 2016, 204:41-52.
［13］刘畅,陈晓雪,张文,等.PFC数值模拟中平行粘结细观参数标定过程研究［J］.价值工程,2017,36(26):204-207. LIU Chang, CHEN Xiaoxue, ZHANG Wen, et al. Study on calibration process of parallel bonding meso-structure parameter in PFC numerical simulation［J］. Value Engineering, 2017, 36(26): 204-207.
［14］王涛,盛谦,熊将.基于颗粒流方法自然崩落法数值模拟研究［J］.岩石力学与工程学报,2007(S2):4202-4207. WANG Tao, SHENG Qian, XIONG Jiang. Research on numerical simulation of natural caving method based on particle flow method［J］. Chinese Journal of Rock Mechanics and Engineering, 2007(S2): 4202-4207.
［15］FAIRHURST. CHARLES， Some challenges of deep mining［J］. Engineering, 2017, 3(4):527-537.
［16］石崇, 徐卫亚. 颗粒流数值模拟技巧与实践［M］. 北京：中国建筑工业出版社, 2015.
［17］蒋明镜,方威,司马军.模拟岩石的平行粘结模型微观参数标定［J］.山东大学学报(工学版),2015,45(4):50-56. JIANG Mingjing, FANG Wei, SIMA Jun. Calibration of micro-parameters of parallel bonded model ofrocks［J］. Journal of Shandong University (Engineering Science), 2015, 45(4): 50-56.
［18］WANG T, HU W, ELSWORTH D. The effect of natural fractures on hydraulic fracturing propagation in coal seams［J］. Journal of Petroleum Science & Engineering, 2017, 150:180-190.
［19］CASTRO-FILGUEIRA U, ALEJANO L R, ARZA J, et al. Sensitivity analysis of the micro-parametersused in a PFC analysis towards the mechanical properties of rocks［J］. Procedia Engineering, 2017, 191:488-495.

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备注/Memo

备注/Memo:
收稿日期： 2018-12-20；数字出版日期：2019-04-29
基金项目： 国家重点研发计划项目（2017YFC0602905）
作者简介： 贾明涛，博士，副教授，主要研究方向为数字矿山与矿山安全。
通信作者： 余传玉，硕士研究生，主要研究方向为矿山安全数值模拟。
更新日期/Last Update: 2019-05-09