Скачать или смотреть Efficient road guardrail post drilling process

The drilling requirements for road guardrail posts involve multiple aspects to ensure installation accuracy, stability, and durability. Drilling positions must be strictly laid out according to the design, and the hole diameter should match the post to ensure a tight installation. The hole depth must be determined based on the designed burial depth, and the verticality deviation of the hole should be less than 1% to ensure post stability after installation. Avoid situations where rough hole walls affect grouting or post fixing. If problems such as reduced diameter, slanted holes, or hole wall collapse occur, diamond reamers must be used for enlargement or high-strength grouting must be applied. Before construction, underground pipelines must be detected, and the strength of the road base layer must be tested. On rock or hardened roadbed sections, after drilling, the posts must be grouted with high-strength cement mortar to ensure a firm bond with the base; loose foundations can be protected with PVC pipes or backfilled and compacted in layers.