一种基于动态路径损耗指数的最小能耗中继路由 (Dynamic Minimum Energy Relay Routing，DMERR）算法，该算法能够获取巷道内各处准确的路径损耗指数，准确计算巷道内每处的最佳通讯距离，从而节省通信能量。-the Minimum Energy Relay Routing (DMERR) algorithm which is based on dynamic path loss parameter is proposed, this algorithm can save the energy of communication by obtain the exact path loss parameter of each place in roadways and calculation the optimum communication distance accurately.