In terms of rock drilling automation, there are many fully hydraulic drilling rigs that have achieved single-hole rock drilling automation. For example, the drilling rig of the Swedish ATLAS company has already been able to supply water to the borehole, and then lightly push the opening with a light impact. After the hole is turned into a heavy impact, it can be fully advanced. Automatically withdraw the brazing tool from the boring area to maintain light impact and strengthen flushing. After eliminating the boring, it will automatically resume advancing drilling. After drilling is completed, the boring will be automatically withdrawn and the impact stopped. Many measures have been adopted in terms of safety protection, such as the sudden stop of water (or insufficient water pressure) during rock drilling, which can automatically stop rock drilling. United States G. D. The company's Mark III drilling rig and Swedish ALIMAK's H852C drilling rig both use a single handle to achieve automatic rock drilling.
There are also new developments in program control and the expansion of microelectronic computers, such as program rock drilling. Some manufacturers are developing advanced automated rock drilling rigs to bring their products to a more advanced level. For example, the French Pantofore drilling rig and the Sig drilling arm use coordinated rock drilling systems. It draws the predetermined gun hole position into a standard gun hole layout drawing, and uses a microcomputer system to make the drill arm according to the gun hole position in the most economical path displacement, swing angle and rotation.
According to the requirements of the design task book, before the design, the conditions of field use should be investigated, and the following main data should be collected as the design basis.
1) The purpose and size of the roadway (usually refers to height * width). Such as the cross-section shape (trapezoidal, arched), the situation leading to the ground, and the installation of gas pipes, water pipes, local ventilators, hoppers, etc. in the roadway,
2) Physical and mechanical properties of rocks. Such as rock hardness, joints, faults and occurrence of ore bodies, etc.
3) Mine transportation improvement. Such as gauge, track type, curve curvature radius, slope, wire line, etc., equipment model, container size and lifting capacity:
4) Cycle chart of mining process and work organization. The footage, drilling depth, blasthole layout, pattern, drilling sequence, rock drilling, shot blasting, ventilation, slag removal, transportation time allocation and personnel organization for each tunneling cycle,
5) Receive the same type of drilling rig data and understand the supply of materials and accessories.