New Evaluation Methods for Coal Loss Due to Underground Coal Fires
New Evaluation Methods for Coal Loss Due to Underground Coal Fires
复制标题
地下煤火损失评估新方法
DOI：
10.1080/00102202.2019.1680652
复制
发表时间：
2019
影响因子：
1.9
通讯作者：
Nanshan Zheng
中科院分区：
文献类型：
--
作者：
Huaizhan Li;Guangli Guo;Nanshan Zheng
煤矿井下火灾损失评估是煤矿井下灭火和利用决策的主要依据。然而，现有的煤矿火灾危险性评价方法复杂、费时费力、不准确，难以满足煤矿井下火灾防治和利用的要求。因此，本文系统地研究了煤炭损失与地下煤火燃烧空间面积的关系，以及煤火燃烧空间面积与地表沉降的协同关系：1.地下煤火造成的煤炭损失与煤火燃烧空间面积有关。不同类型煤的自燃形成相同大小的燃烬区时，煤的损失是不同的。煤的损失可以通过煤燃烧空间面积的大小来计算。2.运用随机介质理论、主断面地表下沉规律和几何方法，确定了煤火燃烧空间面积与地表下沉的协同关系。不同的方法各有优缺点和适用范围。分析了地下煤火引起地表沉陷的监测方法，提出了确定地下燃烧空间区域位置和评价煤火损失的新方法。研究结果对地下隐伏煤火位置的确定和地下煤火的管理利用具有重要的理论和实际意义。
The evaluation of coal loss caused by underground coal fire is the principal basis for the decision-making of underground coal fire extinguishing and utilization. However, the existing coal fire risk assessment method is complex, time-consuming, laborious and inaccurate, and it is difficult to meet the requirements of coal mine underground fire control and utilization. Thus, this paper systematically investigates the relationship between coal loss and the underground combustion space area of coal fires, and the synergetic relationship between combustion space area of coal fires and surface subsidence：1. The coal loss caused by underground coal fire is related to the combustion space area of coal fires. When the different types of coal spontaneous combustion form the same size fuel-burning area, the coal loss is different. The loss of coal can be calculated by the size of the combustion space area of coal fires. 2. The random medium theory, surface subsidence rule of main section and the geometric method were used to determine they synergistic relationship between the combustion space area of coal fires and the surface subsidence. Different methods have their own advantages and disadvantages and applicable scope. Then, the monitoring method of surface subsidence caused by underground coal fire was analyzed, new methods to determine the position of underground combustion space area and to evaluate coal loss caused by coal fire were proposed. The results have important theoretical and practical significance for the determination of underground hidden coal fire location and the management and utilization of underground coal fires.