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[1]费鸿禄,郭玉新.基于LS-DYNA的交错扇形深孔崩落法排间间隔时间优化研究[J].中国安全生产科学技术,2022,18(4):127-134.[doi:10.11731/j.issn.1673-193x.2022.04.018]
　FEI Honglu,GUO Yuxin.Study on optimized selection for row interval time of staggered sector deep-hole caving method based on LS-DYNA[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(4):127-134.[doi:10.11731/j.issn.1673-193x.2022.04.018]
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基于LS-DYNA的交错扇形深孔崩落法排间间隔时间优化研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年4期
页码:
127-134
栏目:
职业安全卫生管理与技术
出版日期:
2022-04-30

文章信息/Info

Title:
Study on optimized selection for row interval time of staggered sector deep-hole caving method based on LS-DYNA
文章编号:
1673-193X(2022)-04-0127-08
作者:
费鸿禄; 郭玉新
（1.辽宁工程技术大学 爆破技术研究院，辽宁 阜新 123000；
2.包头市泉山爆破工程有限责任公司，内蒙古 包头 014060）
Author(s):
FEI Honglu;  GUO Yuxin
(1.Institute of Blasting Technique,Liaoning Technical University,Fuxin Liaoning 123000,China;
2.Baotou Quanshan Blasting Engineering Co.,Ltd.,Baotou Inner Mongolia 014060,China)
关键词:
排间间隔; 交错扇形深孔崩落法; 数值模拟; 空区治理; 隐患资源
Keywords:
row interval;  staggered sector deep-hole caving method;  numerical simulation;  goaf treatment;  hidden dangerous resource
分类号:
X936;TD856
DOI:
10.11731/j.issn.1673-193x.2022.04.018
文献标志码:
A
摘要:
为了同时解决“隐患资源高效回收”和“空区隐患安全治理”这对矛盾问题，提出交错扇形深孔崩落法；采用室内试验和数值模拟相结合的方法，根据交错扇形布孔形式建立数值计算模型，按照1#矿体岩石的物理力学指标确定模型材料参数，采用LS-DYNA动力仿真软件优选扇形排间间隔时间。研究结果表明：当采空一区排间间隔为100 ms时，岩石破坏范围最大，且塌落区域分散，同时顶板解体充分，爆破块度均匀；当采空二区排间间隔为50 ms时，横穿巷道连接处产生横向贯通裂隙，能够保证岩石连续塌落，为后续爆破提供自由面。现场应用结果说明：交错扇形深孔崩落法使1#矿体空区隐患治理效果良好，不仅能够消除隔离矿柱坍塌的风险，而且能够保证采空区下方矿区的施工安全。
Abstract:
In order to simultaneously solve the contradictory problems of “efficient recovery of hidden dangerous resources” and “safety treatment of hidden hazards in goaf”,a staggered sector deep-hole caving method was proposed.The combined methods of indoor experiment and numerical simulation were used to establish the numerical calculation model according to the staggered sector arrangement forms of holes,then the material parameters of the model were determined according to the physical and mechanical indexes of 1# ore body rock,and the optimized selection of the sector row interval time was conducted by using the LS-DYNA dynamic simulation software.The results showed that when the row interval of No.1 goaf was 100 ms,the rock failure range was the largest,the collapse area was scattered,the roof disintegration was sufficient,and the blasting fragmentation was uniform.When the row interval of No.2 goaf was 50 ms,the transverse penetrated fracture generated at the joint of the cross roadway,which could ensure the continuous collapse of rock and provide free surface for the subsequent blasting.The field application results indicated that the treatment effect of hidden hazards in 1# ore body goaf was good by using the staggered sector deep-hole caving method,which not only eliminated the risk of isolated pillar collapse,but also ensured the safety of mining area construction under the goaf.

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备注/Memo

备注/Memo:
收稿日期： 2021-07-07
作者简介： 费鸿禄，博士，教授，主要研究方向为工程爆破。
通信作者： 郭玉新，博士研究生，主要研究方向为井巷工程与安全技术。
更新日期/Last Update: 2022-05-13