| 陈波,卓维海,孙全富,等.矿山巷道断面的风速分布与通风量估算[J].中华放射医学与防护杂志,2008,28(6):579-581.CHEN Bo,ZHUO Wei-hai,SUN Quan-fu,et al.Distribution of wind velocities and the ventilation estimation in a cross section of mine lane[J].Chin J Radiol Med Prot,2008,28(6):579-581 |
| 矿山巷道断面的风速分布与通风量估算 |
| Distribution of wind velocities and the ventilation estimation in a cross section of mine lane |
| 投稿时间：2008-07-31 |
| DOI： |
| 中文关键词: 矿山巷道 风速 通风量 模型 积分 |
| 英文关键词:Mine lane Wind velocity Ventilation rate Model Integral |
| 基金项目:科技部科研院所社会公益研究专项(2005DIB1J087) |
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| 中文摘要: |
| 目的 了解矿山巷道断面上的风速分布并估算通风量,研究简易的测量和计算方法。方法 1通过实测巷道纵向断面不同栅格中的风速了解断面上的风速分布,通过实测风速值与相应栅格面积相乘用求和法计算通风量;2基于巷道纵向断面中垂线上风速的测量,建立预测整个断面上任意位置风速分布的数学模型,通过该模型函数对整个断面求积分的方法计算通风量。结果 在调查的38个点上,通过数学模型预测的风速与实际测量值的相对误差为-9.7%～9.6%。用求和法与积分法计算得到该巷道断面的通风量差异仅为1.1%。结论 巷道断面上的风速分布可通过测量纵向断面中垂线上部分点处的风速并建立数学模型来预测。巷道的通风量可由断面上的风速模型通过求面积积分的方法来正确估算。 |
| 英文摘要: |
| Objective To obtain simple measuring and calculating methods for evaluation of the distribution of wind velocities and the ventilation rate in mine lanes.Methods Two methods were used in this study. First, the wind velocities were measured in different grids of a cross section of mine lane, and the ventilation rate was calculated by summation of the products of measured wind velocities timed the areas of corresponding grids. Secondly, the wind velocities were predicted with a mathematic model built from the measured wind velocities along the central vertical line, and the ventilation rate was integrated based on the model and geometric size of the cross section.Results The variations of wind velocities between the predicted and measured values at the 38 points ranged from -9.7% to 9.6%. The difference of ventilation rates calculated between the summation and the integral methods was only 1.1%.Conclusions The distribution of wind velocities in a cross section of mine lane can be predicated by an appropriate model built from the measurements of wind velocity along its central vertical line. The ventilation rate can be well estimated by the integral method based on the mathematic model of wind velocity. |
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