针对矿山在使用全站仪延伸中腰线中存在的实际问题,利用半导体激光技术开发研制了JCZ激光中腰线延伸仪。该新型延伸仪体积小、精度高、携带方便、操作简单,对控制巷道掘进、回采进路质量可发挥较大作用,实践表明,该仪器的误差可满足矿山生产实际的需要,具有推广应用价值。 In view of the practical problems existing in the use of total station extension in the mine, the JCZ laser midline extension instrument was developed by using semiconductor laser technology. The new extension instrument has the advantages of small volume, high precision, easy to carry and simple operation. It can play a significant role in controlling the quality of tunneling and backhoeing. Practice shows that the error of the instrument can meet the actual needs of mine production, and has the value of popularization and application .