Relation between the circle air and gas concentration;

循环风与瓦斯浓度的关系

Forecast of coalmine gas concentrationbased on the immune neural network model;

基于免疫神经网络模型的瓦斯浓度智能预测

The paper introduced composition,working principle,design of hardware and software of a monitoring system of gas concentrationbased on AT89C2051 single-chip microcomputer and VB6.

0的瓦斯浓度监测系统的组成、工作原理及硬件、软件设计方法。

Based on contrast of methane concentrationfrom calculation with one from experiment, a simulation on methane concentrationin tunnel is completed.

给出巷道气体分层流的数值计算模型,在与实验结果对比基础上,进行了计算机数值模拟,并分析了巷道气体分层流的特征,讨论了影响瓦斯积聚层气体速度降低和积聚层瓦斯浓度稳定的因素。

Through determining methane concentrationdistribution in goaf of 3211 coal face in Yicheng coal mine, methane concentrationdistribution law in goaf of room and pillar mining coal face is found out preliminarily, thus providing scientific basis for methane drainage and methane accidents prevention and control in goaf.

通过对义城煤矿 32 1 1回采工作面采空区瓦斯浓度分布的测定 ,初步查明了房柱式回采工作面采空区瓦斯浓度的分布规律 ,为今后采空区瓦斯抽放治理 ,防止采空区瓦斯事故的发生提供了科学的依据。

This paper achieved the methane control system can realize undergroun mining well by microcomputer,methane concentrationreal time control and have easy structure,low cost,high relia bility and strong control ability.

设计的单片机瓦斯监控系统 ,实现对井下瓦斯浓度的实时控制。

Experimental analysis on gas densityand fire resource affected to expansion of gas explosion;

瓦斯浓度和火源对瓦斯爆炸传播影响的实验分析

Experiment research of gas densityimpacting on explosion propagation influence

瓦斯浓度对爆炸传播影响的实验研究

We got the curve and function of the gas densitychange and the lower limit of the coal-dust blasting desity by Matlab.

5软件对收集的数据进行拟合,得到瓦斯浓度变化和煤尘爆炸浓度下限变化量关系的曲线和函数,判断煤矿不安全的程度;从目标规划入手,运用Lingo软件确定该煤矿所需的最佳通风量,并利用收集的数据得出工作面备风系数,从而确定2个采煤工作面所需风量和局部通风机的额定风量。