1. Preparation work
Before operating a down the hole drilling rig, a series of preparatory work is required. Firstly, it is necessary to select a suitable drilling site and conduct geological exploration and hydrogeological survey to determine the depth and direction of drilling. Secondly, it is necessary to inspect and maintain the down the hole drilling rig to ensure its normal operation. Finally, it is necessary to prepare the necessary materials and tools such as drill rods, drill bits, hydraulic oil, cement, etc.
2. Install drill rods and bits
Before drilling, it is necessary to install the drill rod and drill bit onto the down the hole drilling rig. Firstly, connect the drill rod to the drilling rig host and send it underground through the hydraulic system. Then, the drill bit is installed at the end of the drill rod and sent underground through a hydraulic system.
3. Start drilling
After the drill bit enters the underground, the down the hole drilling rig begins drilling. During the drilling process, it is necessary to continuously add hydraulic oil and cement to maintain the stability and strength of the borehole. At the same time, it is necessary to continuously monitor drilling data, such as drilling depth, drilling diameter, rock and soil layers, in order to conduct geological exploration and hydrogeological surveys.
4. End drilling
After drilling is completed, the drill rod and drill bit need to be removed from the ground and cleaned and maintained. At the same time, it is necessary to analyze and process drilling data to obtain information about groundwater, geothermal energy, mineral resources, etc.
