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冶金系统勘探队普遍使用北京800型转盘钻机.转盘钻机的安装是以转盘为基准的,而转盘的安装又以孔位为基准.因此,采用转盘钻机施工斜孔时,钻机的安装不仅要算出孔口中心至钻塔前腿铁枕中心的距离(简称孔的距,用L表示);而且要求出转盘底座前排螺孔中心与钻塔前腿铁枕中心的距离(简称安装距,用X表示). 孔前距及安装距可用三角计算求得,参看图1及图2.其理论计算公式为:
Metallurgical system exploration team commonly used Beijing 800 turntable rigs.Rotary drilling rig installation is based on the turntable, and the installation of the turntable with holes as the base.Therefore, the use of rotary drilling rig construction inclined hole, rig installation not only to calculate The distance from the center of the hole to the center of the front leg of the drill tower (referred to as the hole distance, denoted by L); and the distance between the center of the front screw hole of the turntable base and the center of the front pillow of the derrick (the installation distance X said.) Pitch before the hole and installation distance can be calculated using the triangle, see Figure 1 and Figure 2. The theoretical formula is: