Study of Highly Efficient Yarding System in Mountain Forests

在这项研究中，我们开发了一个山林围栏系统。最近，在日本，使用塔式绕线机伐木的频率更高了。为了在山地森林中开发高效的围栏系统，我们在我校森林中进行了移动式塔式绕线机围栏试验。我们分析了时间研究的结果，构建了山林高效的围栏系统。得出了适用于小型山地森林的移动式绕线机的林路网规划系统。我们在千叶市的东京大学森林里用移动式绕丝机进行了疏伐试验。很明显，在下坡堆码时，横向码数很难，但使用新车时，横向码数是有效的。综合考虑架设时间和拆卸时间，可以计算出塔式纱机的最佳经济位置。成功地对移动式塔纱机进行了小规模的计算机仿真

In this study we developed of a yarding system in mountain forest. Recently in Japan logging with Tower-yarder have more frequently used. In order to develop efficient yarding system in mountain forests we tested yarding with a mobile tower-yarder in our University Forest. We analyzed the results of a time study and constructed highly efficient yarding system in mountain forests.1. We could get forest-road network planning system for mobile tower-yarder in small scale mountain forests.2. We tested thinning with mobile tower-yarder in Tokyo University Forest in Chiba. It was clear that it was hard to yard laterally in downhill yarding but it was efficient to yard laterally with using new carriage.3. We could calculate the optimum economically position of tower-yarder considering the time of setting up and dismantling.4. We succeeded to make computer-simulation for mobile tower-yarder in small scale