Hard rock construction method
Air hammer type with directional control function for "shock drilling and propulsion method." The target soil types are infinite for gravel! Infinite for rock!
The hard rock construction method is a technique that uses a horizontal boring single-pipe propulsion system, incorporating large and small down-the-hole hammers into the leading body, allowing for the crushing of hard soil types such as soft rock, hard rock, gravel, and cobblestones while being propelled with low thrust. After the completion of the steel pipe propulsion, it can accommodate various pipelines (such as water supply and drainage, electricity, gas, and other lifeline pipelines). Additionally, as a special method, it is possible to construct pipelines with a nominal diameter of 800mm or more using a reaming method that utilizes the reach.
basic information
- By excavating and advancing only through the crushing of hard ground (bedrock, cobbles, and boulders mixed with gravel) using impact force, it is possible to achieve long-distance and high-precision construction without being affected by changes in rock quality or the position of boulders and cobbles. - In rock layers of medium hard rock or harder, construction with a maximum advancement length of 150 meters is possible by replacing the down-the-hole hammer bit. - The minimum dimensions of the launch shaft are Φ2500mm, allowing for access to existing manholes. Additionally, inclined and vertical construction from the ground surface is also possible. - The applicable pipe diameter ranges from steel pipe nominal diameter Φ400 to 800mm, and it can also be replaced with Hume pipes.
Price range
Delivery Time
Applications/Examples of results
Lifeline pipelines such as water supply and drainage, electricity, and gas.
