基于采煤机截割路径的动态三维地质模型构建方法

Construction Method of the Dynamic 3-D Geological Model Based on Shearer Cutting Path

针对虚拟综采工作面难以构建实时动态煤层的问题,提出了一种根据采煤机行走轨迹构建三维地质模型的方法.建立了初始三维地质模型和动态三维地质模型,并提取了目标煤层的轨迹曲线,为采煤机提供了目标截割路径;基于当前工作面采煤机的实际截割情况及未来发展趋势提出了三种采煤机截割方案,分别是采煤机记忆截割、人工干预的采煤机记忆截割和采煤机自主截割;建立了真实的虚拟综采工作面,构建了三种方案的实际煤层形态,并进行了仿真对比实验.结果表明:通过采煤机自主截割方案构建的实际煤层的总体平均误差为15.73 mm,能够实现较小的割岩量和较高的回采效率.

Given that it is difficult to construct a real-time dynamic coal seam in a virtual fully mechanized coal mining face,a method of constructing the 3-D geological model based on the walking trajectory of the shearer is proposed.The initial 3-D geological model and dynamic 3-D geological model are established,and the trajectory curve of the target coal seam is extracted,which provides the target cutting path for the shearer.Based on the actual cutting situation and future development trend of the shearer,three kinds of shearer cutting schemes are put forward,which are memory cutting,memory cutting with manual intervention and autonomous cutting.The real virtual fully mechanized coal mining face is established,the actual coal seam morphology of three schemes is constructed,and the simulation contrast experiment is carried out.The results show that the overall average error of the actual coal seam constructed by the shearer’s autonomous cutting scheme is 15.73 mm,which can achieve smaller rock cutting amount and higher mining efficiency.