|本期目录/Table of Contents|

[1]徐燕飞,安士凯,徐翀,等.坚硬顶板综采工作面推进速度对矿压规律影响研究[J].中国安全生产科学技术,2019,15(10):88-94.[doi:10.11731/j.issn.1673-193x.2019.10.014]
 XU Yanfei,AN Shikai,XU Chong,et al.Influence of advancing speed on strata behaviors in fullymechanized face with hard roof[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(10):88-94.[doi:10.11731/j.issn.1673-193x.2019.10.014]
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坚硬顶板综采工作面推进速度对矿压规律影响研究
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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10期
页码:
88-94
栏目:
职业安全卫生管理与技术
出版日期:
2019-10-31

文章信息/Info

Title:
Influence of advancing speed on strata behaviors in fullymechanized face with hard roof
文章编号:
1673-193X(2019)-10-0088-07
作者:
徐燕飞安士凯徐翀陈永春易厚
(1.煤炭开采国家工程技术研究院,安徽 淮南 232001;
2.煤矿生态环境保护国家工程实验室,安徽 淮南 232001;
3.淮南矿业(集团)有限责任公司,安徽 淮南 232001)
Author(s):
XU YanfeiAN ShikaiXU ChongCHEN YongchunYI Hou
(1.Coal Mining National Engineering Technology Research Institute,Huainan Anhui 232001,China;
2.National Engineering Laboratory for Protection of Coal Mine Ecoenvironment,Huainan Anhui 232001,China;
3.Huainan Mining Industry (Group) Co.,Ltd.,Huainan Anhui 232001,China)
关键词:
推进速度矿压显现数值模拟覆岩移动支架工作阻力应力转移
Keywords:
advancing speed strata behaviors numerical simulation overlying strata movement working resistance of support stress transfer
分类号:
X936;TD324
DOI:
10.11731/j.issn.1673-193x.2019.10.014
文献标志码:
A
摘要:
以顾桥煤矿坚硬顶板综采工作面工程地质条件为背景,运用理论分析、数值模拟和现场实测手段,分析了开采速度对工作面覆岩运动、围岩破坏、应力分布和液压支架承载特性的影响。研究结果表明:1个周期来压内工作面落煤引起的岩梁刚性回转下沉量是一定的,工作面作业循环时间引起的岩梁蠕变下沉量与岩梁刚性回转下沉量呈正比,加快工作面推进速度仅减少围岩体蠕变引起的岩梁下沉部分。工作面开采速度增加,覆岩塑性区发育范围减小,煤壁应力集中位置变浅、应力集中系数变小。工作面快速推进时,液压支架承载多为2次増阻和3次増阻,支架工作阻力较小;缓慢推进时,液压支架承载多为1次急增阻,载荷近似呈线性增长,支架工作阻力较大。
Abstract:
Taking the engineering geological conditions of the fullymechanized face with hard roof in Guqiao coal mine as the background,the influence of mining velocity on the overlying strata movement,surrounding rock failure,stress distribution and loading features of hydraulic support in the working face was analyzed by using the method of theoretical analysis,numerical simulation and field measurement.The results showed that within a periodic weighting,the amount of rigid rotary subsidence of the rock beam caused by coal drop of the working face was certain,the amount of creep subsidence of the rock beam caused by operation cycle time of the working face was proportional to the amount of rigid rotary subsidence of the rock beam,while accelerating the advancing speed of working face only reduced the subsidence portion of rock beam caused by the creep of the surrounding rock mass.When the mining speed of working face increased,the development range of plastic zone in the overlying strata decreased,the stress concentration position of coal wall became shallower,and the stress concentration factor became smaller.When the advancing speed of working face was fast,the load of hydraulic support were mostly the secondary resistance increase and the tertiary resistance increase,and the working resistance of support was smaller.When the advancing speed of working face was slow,the load of hydraulic support were mostly the primary rapid resistance increase,the load approximately presented the linear increase,and the working resistance of support was larger.

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相似文献/References:

[1]张伟,张瑞新,王云鹏,等.急倾斜水平分层综放开采矿压显现规律[J].中国安全生产科学技术,2011,7(4):5.
 ZHANG Wei,ZHANG Rui-xin,WANG Yun-peng,et al.Study on strata-pressure behavior of steep horizontal slice sub-level caving mining[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2011,7(10):5.
[2]李建璞,杨小彬,刘伟,等.坚硬顶板煤层一次采全高矿压显现规律研究[J].中国安全生产科学技术,2013,9(2):18.
 LI Jian pu,YANG Xiao bin,LIU Wei,et al.Research on the strata pressure behaviors of full seam mined coal seam with rigid roof[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2013,9(10):18.
[3]王翰钊,李守国,段鹏飞,等.风积沙厚度对浅埋煤层大采高工作面矿压显现的影响[J].中国安全生产科学技术,2016,12(4):25.[doi:10.11731/j.issn.1673-193x.2016.04.005]
 WANG Hanzhao,LI Shouguo,DUAN Pengfei,et al.Influence on strata behaviors at large mining height working face in shallow coal seam by depth of aeolian sand[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(10):25.[doi:10.11731/j.issn.1673-193x.2016.04.005]
[4]马海峰,李传明,李家卓,等.不同推进速度下煤岩体采动力学行为响应特征与控制[J].中国安全生产科学技术,2016,12(12):74.[doi:10.11731/j.issn.1673-193x.2016.12.013]
 MA Haifeng,LI Chuanming,LI Jiazhuo,et al.Response characteristics of mining-induced mechanical behavior for coal and rock mass under different advancing speed and its control[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(10):74.[doi:10.11731/j.issn.1673-193x.2016.12.013]

备注/Memo

备注/Memo:
收稿日期: 2019-07-18
* 基金项目: 国家重点研发计划项目(2016YFC0501105);中国工程院重大咨询研究项目(2017-ZD-003)
作者简介: 徐燕飞,硕士,工程师,主要研究方向为矿山压力与岩层控制、开采保护。
更新日期/Last Update: 2019-11-05