What Are The Installation Steps For Mining Anchor Cables

The installation steps of mining anchor cables mainly include the following steps:
Mark the anchor construction area: locate the anchor according to the position specified in the engineering drawings or design plan.
Prepare equipment and materials: Prepare the necessary equipment and materials, including drilling rigs, drill bits, steel bars, grouting pumps, cement, etc.
Drilling: Drilling at a predetermined location. Pre treat at the borehole opening, drill the steel pipe underground to reach the pressure resistant rock and soil layer, and then drill the borehole to the predetermined depth. When maintaining continuous downward drilling into coal mine rock mass, fossil layers, and areas rich in gas and water, it is necessary to strengthen measures such as bulletproof water spraying, penetration prevention, reinforcement insertion, blasting, and gas control and air replenishment according to requirements. Afterwards, clean the borehole with a pipeline to ensure that the borehole wall is clean and has sufficient moisture, which is beneficial for grouting.
Grouting: After completing the drilling, grouting work is carried out. Based on the positioning of the anchor, determine the grouting aperture and grouting pressure, and inject appropriate cement slurry according to the design plan. After grouting is completed, hold for a certain period of time and wait for the slurry to solidify and solidify.
Anchor assembly and installation: Reserve anchor holes on the anchor plate and thread the anchor cables through the anchor holes in sequence. Before installation, insert the anchor cable into the anchor cable hole and check if the hole depth meets the requirements and if the insertion is smooth. If insertion is difficult, the drill should be pushed slowly to smooth out the borehole wall. Before installation, it is necessary to use compressed air to blow away the accumulated water and rock powder in the anchor cable hole to avoid affecting the bonding between the medicine roll and the hole wall. The rock surface around the hole opening must be leveled to ensure that the tray can be tightly attached to the rock surface after installation. Then place the head of the anchor cable against the medicine roll and feed it into the bottom of the hole, raise the anchor cable drilling rig, and connect the anchor cable drilling rig to the tail of the anchor cable with a mixer. When using a dedicated mixer for stirring, it is necessary to start slowly and then quickly. After the anchor cable is in place, rotate it at full speed for stirring for a period of time, then stop stirring and wait for the specified time. Shrink the anchor cable drilling rig, remove the mixer, and wait for a period of time.
Tensioning anchor cable: When tensioning the anchor cable, two people work together, and the tensioning oil cylinder and steel strand are kept on the same axis. After pressurization, the tool anchor can only release the steel strand and tie the tensioning jack onto the steel strip with iron wire.
After completing the above steps, the installation of mining anchor cables is basically completed. It should be noted that during the installation process, the design scheme and operating procedures should be strictly followed to ensure the correctness and safety of each step. At the same time, construction personnel should have certain professional skills and experience to cope with possible problems and abnormal situations.