An anchor drill is a drilling device specially used in geotechnical engineering. It is mainly used to drill holes in rocks or soil in order to install anchor rods or anchor cables to reinforce structures such as slopes, tunnels, and dams. So how does an anchor drill work? Let's talk about the working process of an anchor drill.

　　1. Positioning and fixing: First of all, the anchor drill needs to accurately locate the drilling position according to the design requirements, and stably fix the machine on the working surface through its own support system (such as legs).

　　2. Drilling: Start the power system of the drilling rig and drive the drill rod and drill bit to rotate by hydraulic or electric means. The drill bit is usually made of cemented carbide and has high wear resistance and cutting ability. While the drill bit rotates, it applies downward pressure through the propulsion mechanism to enable the drill bit to cut into the rock and soil layer.

　　3. Deslagging: As the drill bit goes deeper, the rock and soil are broken into small pieces. These debris need to be discharged from the hole in time to ensure the smooth progress of drilling. Anchor drilling rigs are usually equipped with a slag removal system, which can blow the debris out of the drill pipe through compressed air generated by an air compressor, or use a mud pump to bring the debris out through mud circulation.

　　4. Depth control: During the drilling process, the operator needs to monitor the depth of the drill hole to ensure that the designed depth is reached. This is usually achieved through a depth gauge or an electronic control system.

　　5. Drilling completion: When the hole reaches the predetermined depth, the drilling is stopped and the drill pipe and drill bit are removed from the hole. At this time, the hole may need to be cleaned to ensure the smooth installation of the subsequent anchor or anchor cable.

　　6. Installing anchor or anchor cable: After the drilling is completed, the prefabricated anchor or anchor cable is inserted into the hole, and then grouting material (such as cement slurry) is injected to fix the anchor or anchor cable and provide the required bearing capacity.

　　The working efficiency and performance of the anchor drilling rig are affected by many factors, including the power of the rig, the material and design of the drill bit, and the geological conditions of the working surface. In actual applications, operators need to select appropriate drilling rigs and drilling tools according to specific circumstances and adopt appropriate operating methods to ensure project quality and safety.