摘要
为研究采空区内部瓦斯涌出规律,解决采煤工作面的瓦斯超限问题,从分析采空区内部的瓦斯源出发,提出了采空区瓦斯涌出强度的概念;用负指数衰减函数描述各层瓦斯涌出强度的衰减过程,给出了采空区瓦斯涌出强度的计算公式。通过定量化分析采空区瓦斯涌出量与各影响因素的关系,得出采空区瓦斯涌出强度决定着采空区瓦斯涌出量,且具有显著的线性比例关系。论汪了用瓦斯涌出强度衡量采空区瓦斯涌出的科学意义,因该项指标具有一定的客观性,可以作为衡量采空区向工作面瓦斯涌出的安全技术指标,并指出该指标的获得途径必须通过现场观测结合场流数值计算模型由参数反演得到。
According to the analysis of gas effusion from the interior goaf, the concept of gas effusion intensity of goaf is put forward. The decay processes of gas effusion intensity of every layer are described by negative exponent attenuation function, at the same time a formula for calculating gas effusion intensity of goaf is given. Based on the quantitative analysis of the relationship between gas effusion quantity of goaf and the influential factors, we can conclude that gas effusion intensity of goaf is determined by gas effusion quantity of goaf, and the relationship has marked pertinence. The scientific meaning of measuring gas effusion of goaf by means of gas effusion intensity of goaf is demonstrated. As the index has definite constancy, so it can be used as a safety and technical index to measure the gas effusion of working face from goaf, and it is pointed out in the paper that the obtaining way of the index is to carry out parameter inversion according to local observation and the numerical calculation model of field flow.
出处
《辽宁工程技术大学学报（自然科学版）》
EI
CAS
北大核心
2005年第6期808-810,共3页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(50374042)
关键词
工作面瓦斯管理
采空区
瓦斯涌出强度
瓦斯涌出量
appraisal of gas from working face
goaf
gas effusion intensity
gas effusion quantity
