Large-head energy gathering perforating pipe type grouting anchor rod with ribbed steel framework and construction method

Abstract

The invention discloses a large-head energy gathering perforating pipe type grouting anchor rod with a ribbed steel framework. The large-head energy gathering perforating pipe type grouting anchor rod comprises four major parts including a blasting perforating device, a pipe type grouting anchor rod body, an energy gathering charging part and a steel bar framework. A construction method comprises the following steps including (1) equipment preparation; (2) measurement and hole distribution; (3) hole drilling; (4) hole cleaning and inspection; (5) blasting perforating device and anchor rod beating; (6) stemming sealing; (7) explosion initiation; (8) hole cleaning; (9) stop-grouting plug installing; (10) grouting. According to the grouting anchor rod and the construction method, thorn branches are arranged on the outer wall of the pipe type grouting anchor rod body, in addition, the blasting perforating device is welded on the bottom of the pipe type grouting anchor rod body, an explosion initiation explosive bag and the energy gathering charging part are arranged at the inside of the pipe type grouting anchor rod body, the high-intensity anchoring force can be immediately provided, the anchor rod falling is prevented, in addition, the grouting on rock and soil bodies can be realized through the tubular grouting anchor rod, and the large-end-part large-area friction can be formed, that is, a plugged novel composite anchoring and grouting reinforced integral supporting and protecting system is formed, and the reinforcing effect of the anchor rod on the rock body is greatly improved.

Description

technical field [0001] The invention relates to a grouting anchor rod and a construction method, in particular to a large-head energy-gathering perforation tubular grouting anchor rod with a steel skeleton and a construction method. Background technique [0002] The grouting bolt is a commonly used support tool. It can be buried in the formation to tightly link the formation together. Through the interaction of the bolt-grouting body-the physical force of the hole wall, it can be mobilized and improved. The self-strength and self-stabilizing ability of the rock and soil can improve the stress state of the anchored rock and soil to make it stable, thereby reducing the deformation of the roadway. [0003] However, the currently commonly used grouting anchors can hardly provide anchoring force before the grouting body is consolidated, or the anchoring force provided is small, and the anchoring area is small. It is difficult to apply in special application environments such as ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the existing grouting bolts, before the grouting body is consolidated, the anchoring force can hardly be provided or the anchoring force provided is small, the anchoring area is small, and the strength of the combined arch formed by the anchor rod and the rock and soil mass is low, and the upward direction Installing the anchor rod will cause the disadvantages such as the anchor rod falling out. The invention provides a large-headed energy-gathering perforating tubular grouting anchor rod with a steel skeleton.

Images