1results about How to "Avoid collapsing holes" patented technology

This invention relates to the field of building construction technology, specifically to a method for clearing obstacles in inclined holes using a full-casing drilling rig. The invention includes the following steps: 1) Construction preparation and site leveling; 2) Measurement and layout of the clearing hole; 3) Guide wall construction; 4) Inserting the outer casing into the first hole; 5) Soil removal and cleaning; 6) Installing tools and a rock drilling rig, using this equipment to drill through the pile (wall) obstacle; 7) Using the full-casing drilling rig to drive the inner casing to drill through the obstacle; 8) Pulling out the inner casing and removing the pile (wall) obstacle, backfilling the hole; 9) Pulling out the outer casing; 10) Moving the drilling rig to the next hole and repeating steps 5)-9) until all obstacles are cleared. This invention is highly operable, has high construction efficiency, and is relatively fast, thus shortening the construction period.