Micropiles, also called mini piles, are often used for underpinning. They are also used to create foundations for a variety of project types, including highway, bridge and transmission tower projects. They are especially useful at sites with difficult or restricted access, or with environmental sensitivity. Micropiles are made of hollow bars or steel rebars with diameters of 60 to 200 mm. Installation of micropiles through top soil, sand and cobblestones overburden and into soil rock can be achieved using Air Rotary or Mud Rotary drilling, impact driving, jacking, vibrating or screwing machinery.
Micropile is a board concrete pile by adopting drilling, strong reinforcement and pressure grouting, with less than 400mm-pile diameter and over 30-slender proportion. The construction equipment demands small, which adapts for narrow places.
While micropile has closer relationship with people and its design, construction and monitoring technology have become big difficulties gradually. It can not only ensure normal construction and stability, but also prevent deformation, soil body moving and normal operation of surrounding buildings, roads and underground pipelines. Nowadays, supporting structures are perfecting gradually and there are many methods to support deep foundation. One method is rock anchor, which is accepted by people increasingly.
Sinorock rock anchor offers underpinning brackets for compression foundation remediation and floorslab remediation applications. Supports and raises existing foundations via connection to grouted micropile casing. With the performance of less material consumption and higher carrying capacity, Sinorock rock anchor is very suitable for applying in the field of miropile .