多空区层状矿体诱导冒落机理及拉底方案优选

doi:10.12068/j.issn.1005-3026.2020.01.021

东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (1): 119-124.DOI: 10.12068/j.issn.1005-3026.2020.01.021

多空区层状矿体诱导冒落机理及拉底方案优选

曹建立，谭宝会，刘洋，任凤玉

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2019-03-20 修回日期:2019-03-20 出版日期:2020-01-15 发布日期:2020-02-01
通讯作者: 曹建立
作者简介:曹建立(1980-)，男，河南民权人，东北大学讲师，博士；任凤玉(1956-)，男，内蒙古赤峰人，东北大学教授，博士生导师.
基金资助:
“十三五”国家重点研发计划项目(2016YFC0801600)；国家自然科学基金重点资助项目(51534003).

Induced Caving Mechanism of Multi-mined-out Areas Layered Orebody and Optimization of Undercut Schemes

CAO Jian-li， TAN Bao-hui， LIU Yang， REN Feng-yu

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2019-03-20 Revised:2019-03-20 Online:2020-01-15 Published:2020-02-01
Contact: CAO Jian-li
About author:-
Supported by:
-

摘要/Abstract

摘要： 基于诱导冒落法提出了多空区层状矿体的回采方案，使用3DEC软件对诱导冒落机理及规律进行了研究.同时设计了4种不同退采顺序的拉底方案，并对其冒落效果进行了模拟.结果表明，矿柱尺寸越小、周边空区数量越多，矿柱越容易因应力集中而产生裂纹，当其裂纹与矿体层理面贯通时矿体便会冒落；当把拉底工程布置在最易破坏的矿柱下方并以其为中心向四周不断扩大拉底面积时，能够使矿体在最短时间内发生持续、稳定的冒落，从而可实现多空区矿体的安全高效回采.

关键词: 多空区矿体, 诱导冒落, 拉底方案, 空区群, 3DEC模拟

Abstract: A technical scheme of mining multi-mined-out areas layered orebody based on induced caving method(ICM) was proposed， and 3DEC software was used to study the mechanism and law of induced caving. Four different withdrawal sequences were designed and simulated by the 3DEC software. The results showed that the larger the number of mined-out areas around the pillar and the smaller the size of the pillar， the more easily the cracks form in the pillar due to stress concentration. Once the crack connected with the bedding plane， the falling of the orebody begins. If the undercutting project is arranged at the bottom of the most vulnerable pillar and the undercutting area is continuously expanded from the pillar to the surrounding area， the continuous caving of orebody can occur in the shortest time. In this way， the safe and efficient mining of multi-mined-out orebody can be realized.

Key words: multi-mined-out orebody, induced caving, undercut scheme, mined-out area groups, 3DEC simulation

中图分类号:

TD 853.391⁺.2

曹建立，谭宝会，刘洋，任凤玉. 多空区层状矿体诱导冒落机理及拉底方案优选[J]. 东北大学学报:自然科学版, 2020, 41(1): 119-124.

CAO Jian-li， TAN Bao-hui， LIU Yang， REN Feng-yu. Induced Caving Mechanism of Multi-mined-out Areas Layered Orebody and Optimization of Undercut Schemes[J]. Journal of Northeastern University Natural Science, 2020, 41(1): 119-124.

参考文献

[1]Wang J A，Li D Z，Shang X C.Creep failure of roof stratum above mined-out area［J］.Rock Mechanics and Rock Engineering，2012，45(4):533-546.
[2]Sun Y H，Zhang X D，Mao W F，et al.Mechanism and stability evaluation of goaf ground subsidence in the third mining area in Gongchangling District，China［J］.Arabian Journal of Geosciences，2015，8(2):639-646.
[3]郑磊，高玉宝.多空区条件下崩落放顶过程的地压显现与矿柱稳定性研究［J］.有色金属(矿山部分)，2010，62(4):11-14.(Zheng Lei，Gao Yu-bao.Study of ground pressure appearance and pillars stability in caving mining with multi-mined-out areas［J］.Nonferrous Metals(Mining Section)，2010，62(4):11-14.)
[4]赵兴明.复杂多空区下低贫损安全开采工艺技术研究［D］.长沙:中南大学，2004.(Zhao Xing-ming.Study on safe mining technology with low lean loss under complex multi-gobs area［D］.Changsha:Central South University，2004.)
[5]李兴尚，宋长江.充填采矿法在民采滞留多空区矿床中的应用［J］.有色金属(矿山部分)，2014，66(4):5-7.(Li Xing-shang，Song Chang-jiang.Application of filling stoping method in residual deposit with irregular goafs［J］.Nonferrous Metals(Mining Section)，2014，66(4):5-7.)
[6]Tan B H，Ren F Y，Ning Y J，et al.A new mining scheme for hanging-wall ore-body during the transition from open pit to underground mining:a numerical study［EB/OL］.(2018-10-17)［2018-12-20］.https://www.hindawi.com/journals/ace/2018/7465672.
[7]Ren F Y，Sow T A M，He R X，et al.Optimization and application of blasting parameters based on the “pushing-wall” mechanism［J］.International Journal of Minerals Metallurgy and Materials，2012，19(10):879-885.
[8]Wu J H，Lin W K，Hu H T.Post-failure simulations of a large slope failure using 3DEC:the Hsien-du-shan slope［J］.Engineering Geology，2018(242):92-107.
[9]Yao J R，Ma C D，Li X B，et al.Numerical simulation of optimum mining design for high stress hard-rock deposit based on inducing fracturing mechanism［J］.Transactions of Nonferrous Metals Society of China，2012，22(9):2241-2247.
[10]Ni W D，Tang H M，Liu X，et al.Dynamic stability analysis of wedge in rock slope based on kinetic vector method［J］.Journal of Earth Science，2014，25(4):749-756.
[15]关守平，房少纯.一种新型的区间-粒子群优化算法［J］.东北大学学报(自然科学版)，2012，33(10):1381-1384.(Guan Shou-ping，Fang Shao-chun.A new particle swarm optimization algorithm［J］.Journal of Northeastern University(Natural Science)，2012，33(10):1381-1384.)

[1]	乔夏梁，任凤玉，曹建立，师宏伟. 杏山铁矿斜分条分段崩落法试验研究[J]. 东北大学学报（自然科学版）, 2021, 42(12): 1747-1752.
[2]	任凤玉，谭宝会，付煜，朱强. 诱导冒落法回采挂帮矿引发的边坡失稳[J]. 东北大学学报:自然科学版, 2019, 40(2): 273-278.
[3]	贾海波，任凤玉，何荣兴，丁航行. 缓倾斜厚石膏矿低贫化放矿实验研究[J]. 东北大学学报:自然科学版, 2019, 40(11): 1617-1622.
[4]	范晓明，任凤玉，肖冬，毛亚纯. 具有深凹特征的改进挂帮矿诱导冒落开采方法[J]. 东北大学学报:自然科学版, 2018, 39(9): 1321-1326.
[5]	任思潼，顾晓薇，付煜，李传迎. 露天边帮下紧邻尾矿库采空区地表充填治理方法[J]. 东北大学学报:自然科学版, 2018, 39(5): 722-725.
[6]	任凤玉，刘洋，何荣兴，丁航行. 复杂空区群建模及在圈定矿岩移动范围的应用[J]. 东北大学学报:自然科学版, 2018, 39(4): 549-552.
[7]	姜立春，肖康，吴爱祥，李令鑫. 基于结构模态的纵向采空区群爆破动力响应[J]. 东北大学学报:自然科学版, 2016, 37(11): 1615-1619.
[8]	马姣阳，任凤玉，何荣兴，闫喜明. 双鸭山铁矿诱导冒落法试验研究[J]. 东北大学学报:自然科学版, 2016, 37(1): 69-73.
[9]	马姣阳，任凤玉，曹建立，闫喜明. 急倾斜破碎中厚矿体诱导冒落法进路位置实验研究[J]. 东北大学学报:自然科学版, 2015, 36(8): 1175-1179.
[10]	李海英，任凤玉，严国富，赵云峰. 露天转地下过渡期岩移危害控制方法[J]. 东北大学学报:自然科学版, 2015, 36(3): 419-423.
[11]	张国联;赵显涛;. 诱导冒落的声发射特性研究[J]. 东北大学学报(自然科学版), 2012, 33(9): 1336-1339.
[12]	张国联;赵显涛;. 岩体诱导冒落的数值模拟[J]. 东北大学学报(自然科学版), 2012, 33(8): 1190-1193.
[13]	徐帅;李元辉;杨宇江;戴星航;. 上盘矿柱诱导冒落回收力学分析[J]. 东北大学学报(自然科学版), 2011, 32(9): 1336-1339.

多空区层状矿体诱导冒落机理及拉底方案优选

Induced Caving Mechanism of Multi-mined-out Areas Layered Orebody and Optimization of Undercut Schemes

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 13

编辑推荐

Metrics

本文评价