The anchoring technology has been in existence for a long time. China already had fixed anchors after the vessels were suspended, and there were also butterfly nails that anchored the rock mass to prevent the flood from collapsing. With the development of technology, we have developed self drilling anchor bolts in ancient anchor bolts and carried out anchorage support in civil engineering. Self drilling bolts are widely used in the tunnel's advance support, slope protection, coal mine roadway support, and hydroelectric projects. As a professional self drilling hollow anchor bolt manufacturer, Sinorock® can propose system solutions based on the geological conditions of various projects and other comprehensive factors. Under complex geological conditions, self drilling bolts can support loose rock immediately after drilling to prevent deformation. And the grouting material can flow out from the bottom of the drill bit along the inner hole of the hollow anchor, filling the entire drill hole and the surrounding rock slits, increasing the anchoring force. The self drilling anchor system supports the interior of the rock mass, which provides an open space for the project construction, promotes construction efficiency, and increases the available area. It has developed into the most widely used anchoring support tool.
