In fractured geology, drill hollow bar can save lots of time than traditional anchor. The reason is that self-drilling bolt does not need to put the case in and out of the ground. And the grouting also will be done during the drilling, when the drilling finished, the grouting finished too.
Hollow bar system is a flexible shoring system and is constructed from top to the bottom in steps parallel to excavation.The main elements of the system are self drilling bolts, reinforced shotcrete surface cover and subhorizontal drains.The length and spacing of the self drilling hollow bars are variable depending on the depth of the excavation, environmental loads and soil conditions, etc.

Drill Hollow Bar Anchors are installed by rotating the anchors into the ground with a rotary torque motor. Capacities up to 200,000 pounds per anchor are obtainable with this system and are available in either a square or tubular shaft configuration. The Sinorock self drilling rock bolts can be proof tested immediately, as there is no grout to cure. Installation of the helical tieback can take place in almost any weather with conventional drilling equipment. No concrete trucks or grout pumps required. There are also customized drilled and grouted support systems available.Sinorock's self drilling hollow bar systems are in use around the world, securing famous structures, large dams and retaining walls, holding down underpasses and underground structures,stabilising wind turbine towers and preventing landslides.Sinorock was incorporated at the turn of the millennium and has been trading in the supply of self drilling hollow bar system and other geotechnical products to the Civil Engineering industries throughout the world. Today we have created partnering organisations in Ireland, Denmark, Sweden, Poland, Belgium, France, Czech Republic, Turkey and Spain. We are also progressing with our efforts for the supply of our technologies in various sectors in the United States, Middle East and Australasia.During the construction of high-rise buildings, choosing self drilling rock bolt of Sinorock with good tensile and yield strength,self drilling hollow bar has good supporting effect and has played an important role.

Sinorock's self drilling hollow bar is the perfect solution for the most challenging projects The range of Sinorock self drilling hollow bar system features various grades of high quality .With a production range of Tthread to R thread, we will design the perfect engineering solution for your project.