一、概况 这种掘进机的基本原理是经过现场试验验证了的。 试验表明:采用高强度的径向点作用截齿以及较低的旋转速度,可以切割一般掘进机无法切割的硬岩。 英国采矿研究所研究结果表明:这种掘进机既可以用于掘进拱形巷道,也可以用于掘进圆形巷道。首先研制了用于掘进圆形巷道的掘进机,然后再根据同样的原理研究用于掘进拱形巷道的掘进机。 试验证明:该掘进机有很多独特的优点。 掘进机的截割部分由英国采矿研究所设计并制造。其它部分如护盾、支护安装系统及辅助维修设备均系购置的成品。 I. Overview The basic principle of this roadheader is verified by the field test. Experiments show that the use of high-intensity radial point-acting picks and lower rotational speed can cut hard rock that can not be cut by common roadheaders. The British Mining Institute results show that: this roadheader can be used for tunneling arching tunnels can also be used to drive circular roadway. First of all, a roadheader used to excavate a circular roadway was developed, and then a boring machine for driving an arched roadway was studied according to the same principle. Test proved that: this roadheader has many unique advantages. The cutting part of the roadheader was designed and manufactured by the British Mining Institute. Other parts such as shields, support and installation systems and auxiliary maintenance equipment are purchased finished products.