陕西煤炭2024，Vol.43Issue(6)：11-16,43,7.DOI:10.20120/j.cnki.issn.1671-749x.2024.0603
特厚煤层重复采动作用下采空区自燃"三带"位移变化
Displacement change of spontaneous combustion"three zones"in goaf under repeated mining of extra-thick coal seam
马德 1李鹏 1王建腾 1张明 1黄一珂 2任帅京 2曹明3
作者信息
- 1. 陕西陕煤铜川矿业有限公司下石节煤矿,陕西铜川 727101
- 2. 西安科技大学安全科学与工程学院,陕西西安 710054
- 3. 铜川市能源局,陕西铜川 727101
- 折叠
摘要
Abstract
In order to study the effect of repeated mining on the distribution characteristics of the"three zones"of coal spontaneous combustion(CSC)in the goaf of extra-thick coal seam,field measurements were carried out on the 222 working face of Xiashijie Coal Mine in Tongchuan,and the distribution on the"three zones"was determined based on the tube bun-dle monitoring system.Then,Fluent software was utilized to simulate the dynamic distribution of oxygen concentration in the goaf under repeated mining and single mining,respectively.Under repeated mining,the measured results in the goaf were in general agreement with the numerical simulation results.Compared with the single mining simulation results,the repeated mining resulted in a shortening of the heat dissipation zone and oxidation zone in the goaf.In addition,the heat dissipation zone on the inlet side moved forward by 6.8％,and the oxidation zone moved forward by 7.0％;and 14.3％forward shift of the heat dissipation zone and 11.3％forward shift of the oxidation zone on the outlet side.The research results provide a ba-sis for the prevention and control of CSC dangerous areas in goaf under repeated mining.关键词
特厚煤层/重复采动/采空区/自燃"三带"/防灭火技术Key words
extra-thick coal seam/repeated mining/goaf/spontaneous combustion"three zones"/fire prevention and control technology分类
矿山工程引用本文复制引用
马德,李鹏,王建腾,张明,黄一珂,任帅京,曹明..特厚煤层重复采动作用下采空区自燃"三带"位移变化[J].陕西煤炭,2024,43(6):11-16,43,7.
