KR80412-3克莱姆管棚钻机是我公司2001年从德国引进的一台专门用于隧道软岩、破碎带管棚支撑防护钻进的设备。由于其钻孔范围大、全方位调定、钻位定位准确、移动方便、软岩的钻进效率高等特点而大大提高了隧道的支撑防护工效而颇受欢迎。但是其对于硬岩层的钻进效率很低,同时钻头、钻杆消耗成本很大而使其适用范围受到极大限制,远不能满足现场施工需求。 KR80412-3 Crane pipe shed drilling rig is my company in 2001 from Germany to introduce a dedicated tunnel for soft rock, broken pipe shed supporting the protection of drilling equipment. Due to its large drilling range, all-round setting, drilling position accurate, easy to move, soft rock drilling and higher efficiency and greatly enhance the tunnel support and protection efficiency is quite welcome. However, its drilling efficiency for hard rock formations is very low. At the same time, the cost of drill bits and drill rods is greatly limited, which greatly limits the applicable range and can not meet the demand of on-site construction.