特厚煤层复杂条件下火区启封方案优化及控制技术

 摘要：本文以孟加拉国巴拉普库利亚煤矿（简称孟巴矿）1110工作面火区成功治理为背景，介绍和探讨特厚煤层复杂条件下火区启封的技术方案优化与控制技术。孟巴矿1110工作面火区具有高度敏感的自然发火特性、复杂的边界巷道条件、厚顶煤和大量采空区遗煤，条件复杂，治理难度大。本次治理从风险分析入手，建立了“强化治理＋可能复燃＋隔离和通风控制”的技术思想，选择了务实可靠的启封后设备撤除技术方案，采取了注胶、注复合胶体隔离火区和通风控制CO复燃及恶化的多种技术措施，首次创新性运用Y反通风系统，在不同阶段控制其高浓度CO逸出量和排泄通道，保障了工作环境的CO浓度、温度、风量满足安全要求，顺利、安全地撤除了工作面全套综采设备。该项目获得2009年度煤炭工业科学技术二等奖。

Optimization and control technology of fire zone reopening plan under complicated conditions of ultra thick seam

Abstract: This article systematically introduces and analyzes the technical proposal and control technology under extreme thick coal seam with complicated underground conditions. The success treatment of this combustion accident of Bangladesh Brapukuria Coal Mine provided useful experience and be the base background of this article. The combustion area in 1110 mining face is featured for high sensitivity, complicated boundary of roadway and gates, thick coal seam and left coal in gob. Therefore the treatment is full of difficulties. By starting with risks analysis, the principle of treatment is determined with “intensive managing, considering possible re-combusting, isolating and ventilation control”. Reliable proposal of withdrawing of face equipment is worked out. Glue material injection to isolate the combustion area, ventilation control to prevent CO re-combusting is adopted, and other various measures are taken. “Y” type anti-venting is the first and creatively used to control CO content and moving pass at different stages. The CO content, temperature, air flow are controlled and meet the safety requirements. All the face equipment is recovered safely and smoothly. The project is awarded the second prize of science and technology of National Coal Industry