基于三角形剖分算法的开采沉陷预计系统设计

矿区沉陷预计是开采沉陷研究的重要内容,现有的开采沉陷预计软件多以矩形剖分为基础,存在对凹多边形工作面适应性差、预计结果准确性低等问题。为此,首先采用VB编程语言,基于三角形剖分模型,以改正后的角点坐标为基础,将开采工作面划分为多个独立的三角形;然后运用概率积分法,采用二重变步长辛卜生算法计算每个三角形区域开采引起的移动变形值;最后将三角形单元预计结果进行叠加,实现多个开采工作面地表沉陷的高精度预计及预计结果的可视化输出。试验结果表明：①基于三角形剖分算法的开采沉陷预计克服了矩形剖分预计中的工作面处理难度大、等效剖分等缺点,在满足工程需要的同时,简化了数据处理流程,预计结果的准确性及可靠性得到了进一步提高。②基于三角形分割模型开发的开采沉陷预计反演一体化系统具有良好的稳定性及实用性,可为“三下”采煤方案优化设计、矿区生态环境保护、矿区土地复垦等提供科学依据,为更好地实现绿色开采服务。

Software Design of Mining Subsidence Prediction Based on Triangle Subdivision Algorithm

Mining subsidence prediction is an important part of the study of mining subsidence,most of the existing mining subsidence prediction softwares are developed based on the rectangle subdivision model,which have the disadvantages of poor adaptability and low accuracy of the mining subsidence prediction results.Aiming at the defects of the existing mining subsidence softwares,firstly,based on the triangle partition model and the corrected angular point coordinates,the mining working face is divided into multiple independent triangles based on VB programme language;then,the double variable step size Simpson algorithm is adopted to calculate the displacement and deformation caused by each triangle mining working face based on probability integral method;finally,the mining subsidence prediction results of each triangle mining working face are conducted superposition to realize the mining subsidence prediction of each mining working face with high precision and the visual output of the mining subsidence prediction results.The experimental results show that:①the mining subsidence prediction method based on triangle subdivision algorithm overcomes the shortcomings of the rectangular subdivision such as processing the mining working face with high difficult,equivalent subdivision and so on,the engineering needs can be satisfied,at the same time,the mining subsidence monitoring data processing flow is simplified,therefore,the accuracy and reliability of the mining subsidence prediction results are improved;②the mining subsidence prediction and parameters inversion system development based on triangle subdivision algorithm with prefect stability and practicability,it can provide scientific basis for the design of "three-underground"coal mining scheme,environmental protection of mining area and land reclamation of mining area,besides that,it also contribute to the realization of green mining.