基于GIS与CAD的煤矿地下水库库容计算平台开发研究

Study on precision computing platform development of coal mine underground reservoir capacity based on GIS and CAD

库容计算是煤矿地下水库建设的核心技术之一。针对库容计算方法效率低和准确度低的问题,提出了基于CAD的煤矿地下水库库容快速精准计算方法,首先基于ODA的TeighaX控件,实现了无CAD平台条件下,煤矿地下水库底板高程数据的自动准确提取;①基于GIS的不规则三角网模型,形成煤矿地下水库底板三角网格,并结合储水水位数据,构建了煤矿地下水库储水体积元,通过对各个体积元赋予不同的储水系数,实现了库容的精准快速计算。基于此,按照面向对象设计思路,开发了C#语言的.NET平台下煤矿地下水库库容计算WebApi接口,集成研发了Web端煤矿地下水库库容计算平台,实现了Web浏览器上传专题地图和库容的快速精准计算。以某煤矿地下水库为案例,分别采用传统方法和研发系统对储水区域较大的A1区和A3区进行库容计算,对比结果表明A1区的误差为0.68%,A3区的误差为2.66%,2种方法计算结果误差均在3%之内,说明应用研发系统计算的结果可靠,可满足库容快速计算的基本要求。

Storage capacity calculation is important to coal mine underground reservoir.According to low efficiency and accuracy of the existing storage capacity calculation method,a precision computing method of coal mine underground reservoir capacity based on CAD is put forward.Firstly,floor elevation data of coal mine underground reservoir can be exacted automatically and precisely,away from the CAD platform,using TeighaX widget of ODA.Floor TIN model of coal mine underground reservoir is constructed based on GIS and TIN.Volume elements of water storage are built with the combination of reservoir level data.By assigning various water storage coefficients to volume elements,preciser and more efficient calculation results of the reservoir capacity are obtained.Based on the above,the WebApi of coal mine underground reservoir capacity calculation with C#.NET platform,the computing WEB platform development of coal mine underground reservoir capacity is developed,which can achieve drawings upload,fast and accurate calculation of coal mine underground reservoir capacity by Web browser.Taking the Underground Reservoir as an example,using the traditional method and the system,the results show that the calculated results of reservoir capacity are basically consistent,the comparison of results shows that the error in A1 area is 0.68%while the error in A3 is 2.66%.Both of them are below 3%,which proves that the calculation of the system is reliable.