The combination of rotary drilling rig and DTH hammer successfully broke through the key technical problems of rock socketed pile
In recent years, China's railway construction way to release large amounts of positive signal stride forward singing militant songs, at the same time, it also brings new tasks and new opportunities for the construction of railway bridge, improve piling technique, the pile body structure and pile bearing capacity has become an urgent problem in construction. This paper is to talk about the combination of rotary drilling rig and DTH hammer, which has broken through the key technical problems of rock socketed pile successfully.
Application of drilling equipment for rock socketed pile in combination
In the construction of railway bridges, rock socketed piles are usually used to stabilize the shallow buried bearing stratum. Therefore, how to improve the efficiency and quality of rock socketed pile formation has attracted wide attention in the industry.
Among them, the rotary drilling rig is the main machine of the "rock socketed pile" drilling operation in China. With suitable drilling tools, the drilling operation can be carried out in the stratum of filling soil, clay, silt soil, sandy soil, sand gravel layer and soft medium hard fractured bedding. However, the construction of rotary drilling rig is very difficult for the medium and hard bedrock strata which are not well developed and the bedding fissures are undeveloped.
And "DTH hammer" in the construction of medium and hard bedrock, with its excellent rock drilling ability and drilling efficiency in the oil field, mining, geological exploration and other industries have been widely used. However, the application of DTH hammer can only be combined with the long screw pile machine, and it can not play the characteristics and advantages of large diameter DTH hammer. How to make the combination of two kinds of drilling rigs has been unable to solve, and become a difficult problem of rock socketed pile construction.
Rotary drilling rig DTH hammer combination rock socketed technology has made a major breakthrough
In August 6, 2014, the rock socketed technology in the field of pile foundation in China ushered in a landmark breakthrough. In Yantai City, Shandong Province, China Railway ten Bureau Longyan railway zangjia bridge construction site, from Beijing three Bao Industry Science and technology development limited company of American CRI company engineers and technical experts gathered here to carry out domestic rotary drilling rig connected cluster DTH large diameter rock socketed pile drilling construction used for the first time.
In Longyan railway construction site, Sanren Po industry companies rely on their own professional advantage, provide equipment and integrated solutions, mature technology for CRI company to digest and improvement, starting from the field of China adapt to the actual situation of pile foundation, a revolutionary innovation with RCD (cluster configuration DTH rig) method. Rotary drilling rig in complete soil hole, CRI DTH hammer is put in place, 1 meters in diameter of the pile embedded in rock, weathered rock, the depth of 4 meters, the rock can be completed within 1 hours, the traditional method to enhance the efficiency of rock in dozens of times, excellent performance of RCD method reflects the obtained field engineering business and industry colleagues alike.
Continuous innovation promotes the service of domestic pile foundation
According to the excellent performance of RCD method shows a good application prospect and standing, Sanren Po industry company deputy general manager Zhang Xiufeng said, Sanren Po industry companies will continue to promote the development of the technology industry through continuous innovation, and will rely on its own nationwide service network and convenient and efficient logistics system, provide overall first-class equipment and customized for domestic users solutions in the field of pile foundation.
Sam Po industry innovation using RCD (cluster configuration DTH rig) method, which is the enterprise adhere to the development road of independent innovation, in accordance with the concept of service-oriented business development, according to customer demand, a package of solutions from product development and manufacturing services to the achievements. The future, Sanren Po industry on the road of innovation will also walk the line!
