Urban deep foundation excavations are generally surrounded with dense buildings. So their working space is very narrow, especially when they are close to the foundations of adjacent buildings or structures in construction. Many scholars, engineers and technicians have already worked a lot in the displacement-controlling design of deep foundation excavations recent years, however, difficulty remains to be solved in correlation among the retaining structures, soil deformation around the excavations and the displacements of adjacent structures.

Self drilling rock anchor system is a flexible shoring system and is constructed from top to the bottom in steps parallel to excavation.

With the rapidly development of civil construction,especially in mining,foundation support,hydroelectric project,tunneling,transportation and other sort of industries. The technology of self drilling rock bolt that has been regularly applied in excavation or backfill with the widely carried out of geological engineerings and infrastructures. Self drilling rock bolt has been used in temporary applications for earth retaining structures in the world for more than 10 years, providing an alternative to solid bar soil nails when the solid bar installation would require casing of the hole. The use of self drilling rock bolt reduces the steps needed for installation, which can accelerate construction and increase work zone safety. When using self drilling rock bolt,the existing ground is reinforced and strengthened by installing closely-spaced steel bars, known as “nails,” into a slope or excavation as construction of a retaining wall proceeds from the top down. This creates a reinforced section that is stable and able to retain the ground behind it. Today,Sinorock is a world leader in this field with an outstanding reputation of self drilling rock bolt product quality and customer service. We emphasize on quality products that cater for today’s competitive and demanding business environment. Coupled with advanced manufacturing technology and stringent quality control, we strive to ensure our products achieve high level of standards. In summary our strategic supply capability combined with our dedication to customer service leadership is the basis of “our value” to the customer.