|本期目录/Table of Contents|

[1]贺飞,王继仁,郝朝瑜,等.浅埋近距离煤层内错布置采空区自燃危险区域研究[J].中国安全生产科学技术,2016,12(2):68-72.[doi:10.11731/j.issn.1673-193X.2016.02.012]
 HE Fei,WANG Jiren,HAO Chaoyu,et al.Study on dangerous area of goaf spontaneous combustionin shallow and close distance coal seams with inner crossing layout[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(2):68-72.[doi:10.11731/j.issn.1673-193X.2016.02.012]
点击复制

浅埋近距离煤层内错布置采空区自燃危险区域研究
分享到:

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年2期
页码:
68-72
栏目:
现代职业安全卫生管理与技术
出版日期:
2016-02-29

文章信息/Info

Title:
Study on dangerous area of goaf spontaneous combustion in shallow and close distance coal seams with inner crossing layout
文章编号:
1673-193X(2016)-02-0068-05
作者:
贺飞12王继仁1郝朝瑜1岑旺3邢国富3祁学谦3
1.辽宁工程技术大学 安全科学与工程学院,辽宁 阜新 123000;
2.煤矿重大动力灾害防控协同创新中心,辽宁 阜新 123000;
3.伊泰集团 酸刺沟煤矿,内蒙古 鄂尔多斯 017000
Author(s):
HE Fei12 WANG Jiren1 HAO Chaoyu1 CEN Wang3 XING Guofu3 QI Xueqian3
1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China;
2. Collaborative Innovation Center for Disaster Prevention in Coal Mines, Fuxin Liaoning 123000, China;
3. Suancigou Coal Mine, Yitai Group, Erdos Inner Mongolia 017000, China
关键词:
浅埋近距离煤层内错布置复合采空区漏风自燃危险区域
Keywords:
shallow and close distance coal seams inner crossing layout composite goaf air leakage dangerous area of spontaneous combustion
分类号:
X936
DOI:
10.11731/j.issn.1673-193X.2016.02.012
文献标志码:
A
摘要:
浅埋近距离煤层内错布置开采下部煤层时,地表裂隙易与复合采空区相互贯通,造成地表漏风,使采空区,特别是上部老采空自燃危险区域的分布难以预测。针对此问题,以酸刺沟煤矿6上109工作面至地表空间为研究对象,在漏风测定及束管监测的基础上,建立地表与复合采空区漏风模型,借助FLUENT数值模拟软件,研究地表漏风对复合采空区自燃危险区域的影响。研究表明,地表漏风最终汇入下部采空区回风侧,加大了其自燃危险区域范围;漏风流在向回风侧偏移的过程中,由于煤柱的阻挡,风速逐渐降低,与下部漏入的风流共同作用,使上部老采空区形成了氧浓度中间低四周高的不规则环状自燃危险区域;下部采空区进风侧向上的漏风增加了本煤层采空区的总漏风量,加大了其自燃危险区域宽度,同时增加了上部老采空区局部氧浓度,使其自燃危险性增大。
Abstract:
When mining the lower coal seam in shallow and close distance coal seams with inner crossing layout, the surface cracks are easy to communicate with the composite goaf and cause surface air leakage, which makes the distribution of dangerous area of spontaneous combustion in goaf, especially the upper goaf being difficult to predict. To solve this problem, taking the space from 109 working face in 6 upper seam to the surface in Suancigou Coal Mine as the research object, on the basis of air leakage measurement and beam tube monitoring, the air leakage model of surface and composite goaf was established, and the numerical simulation software FLUENT was used to study the influence of surface air leakage to dangerous area of spontaneous combustion in composite goaf. It showed that, the surface air leakage flows into the air return side of lower goaf, which increases the range of dangerous area of spontaneous combustion. For the air leakage flow in the process of migration to air return side, due to the blocking of coal pillar, the air speed reduces gradually, and it interacts with the lower air leakage flow, which makes the formation of dangerous area of spontaneous combustion like irregular ring with low oxygen concentration in the middle and high oxygen concentration around it in the upper goaf. The upward air leakage at the inlet air side of lower goaf increases the total air leakage of goaf in this coal seam, enlarges the width of dangerous area of spontaneous combustion, at the same time, it increases the local oxygen concentration of upper goaf, and enlarges the risk of spontaneous combustion.

参考文献/References:

[1]曹凯,时国庆,王德明,等.浅埋深综放工作面采空区自燃危险区域判定[J]. 煤炭科学技术,2012,40(1) :57-59. CAO Kai, SHI Guoqing, WANG Deming, et al. Dangerous region judgment of spontaneous combustion in goaf of fully mechanized top coal caving mining face with shallow depth seam[J]. Coal Science and Technology, 2012,40(1) :57-59.
[2]张辛亥,席光,陈晓坤,等. 近距离煤层群开采自燃危险区域划分及自燃预测[J].煤炭学报,2005,30(6):733-735. ZHANG Xinhai, XI Guang, CHEN Xiaokun, et al. Determining spontaneous combustion danger zones and predicting spontaneous canbustion duringmining near neig hbored coal seams[J].Journal of China Coal Society,2005,30(6):733-735.
[3]肖旸,徐精彩,李树刚,等.近距离煤层采空区自然发火预测模型研究[J]. 湖南科技大学学报(自然科学版),2006,21(2):5-6. XIAO Yang, XU Jingcai,LI Shugang, et al. Study of forecast model of spontaneous Combustion in goaf of close distance coal seams[J].Journal of Hunan University of Science & Technology(Natural Science Edition), 2006,21(2):5-6.
[4]刘松,蒋曙光,王东江,等.采空区自燃“三带”变化规律研究[J].煤炭科学技术,2011,39(4):69-71. LIU Song, JIANG Shuguang, WANG Dongjiang, et al.Study on variation law of spont aneous canbustion"Three Zones"in goaf[J]. Coal Science and Technology,2 011,39(4):69-71.
[5]李宗翔.高瓦斯易自燃采空区瓦斯与自燃耦合研究[D].阜新:辽宁工程技术大学,2007:20-24.
[6]胡千庭,梁运培,刘见中.采空区瓦斯流动规律的CFD模拟[J].煤炭学报,2007,32(7):719-720. HU Qianting,LIANG Yunpei,LIU Jianzhong. CFD simulation of goaf gas flow patterns[J].Journal of China Coal Society,2007,32(7):719-720.
[7]周健,刘泽功.采空区三维耦合场数值模拟研究[J].中国安全生产科学技术,2014, 10(6):117-118. ZHOU Jian,LIU Zegong. Numerical simulation on three-limensional coupled field in goaf[J].Journal of Safety Science and Techonlogy,2014, 10(6):117-118.
[8]张春,题正义,李宗翔.综放采空区遗煤自燃的三维数值模拟研究[J].中国安全科学学报,2013,23(5):16-17. ZHANG Chun,TI Zhengyi,LI Zongxiang. Three-dimension numerica simulation of residual coal spontaneous combustion in goaf in fully mechanized caving face[J].China Safety Science Journal,2013,23(5):16-17.
[9]顾润红.综放采空区3D空间非线性渗流及瓦斯运移规律数值模拟研究[D].阜新:辽宁工程技术大学,2011:9-12.
[10]江卫.SF6示踪技术与能位测定联合检测复杂采空区漏风[J].煤炭科学技术,2003,31(8):9-11. JIANG Wei. SF6 tracking technology and energy level detecting combined to detect and measure ventilation leakage in complicated goaf[J]. Coal Science and Technology,2003,31(8):9-11.
[11]钱鸣高,石平五,许家林.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2011:70-84.
[12]时国庆,王德明,奚志林,等.基于FLUENT对采空区氧气浓度场的数值模拟[J].煤炭科学技术,2009,37(6):76-77. SHI Guoqing,WANG Deming,XI Zhilin,et al.Numerical simulation of oxygen concentration distribution in gob areas based on FLUENT[J].Coal Science and Technology,2009,37(6):76-77.
[13]杨胜强,徐全,黄金,等. 采空区自燃“三带”微循环理论及漏风流场数值模拟[J].中国矿业大学学报,2009,38(6):770-773. YANG Shengqiang,XU Quan,HUANG Jin,et al.The “Three Zones” mi-crocirculation theory of goaf spontaneous combustion and a numerical simulation of the air leakage flow field[J].Journal of China University of Mining & Technology,2009,38(6):770-773.
[14]唐家鹏.FLUTNT 14.0超级学习手册[M].北京:人民邮电出版社,2013:43-65.

相似文献/References:

备注/Memo

备注/Memo:
国家自然科学基金项目(51574143);国家科技支撑计划项目(2013BAK06B00);国家自然科学基金青年基金项目(51404127)
更新日期/Last Update: 2016-03-11