Multi-channel drilling, injecting and pre-tightening integrated anchor rod construction device and method

Abstract

The embodiment of the invention provides a multi-channel drilling, injecting and pre-tightening integrated anchor rod construction device and method. The multi-channel drilling, injecting and pre-tightening integrated anchor rod construction device comprises a sleeve and a rotating shaft. The sleeve and the rotating shaft are coaxially arranged, the sleeve rotatably sleeve the rotating shaft, a plurality of medium inlets located in different horizontal planes are formed in the side wall of the sleeve, and the medium inlets communicate with the interior of the rotating shaft, so that media required in the drilling and anchoring process are conveyed into an anchor rod for drill bit cooling, deslagging or anchoring; and an anchor rod connector used for being connected with the anchor rod is formed in the top of the rotating shaft, and a driver connector used for being connected with a driver is arranged at the bottom of the rotating shaft. According to the multi-channel drilling, injecting and pre-tightening integrated anchor rod construction device, multiple functions of drilling, anchoring agent pumping, anchoring, pre-tightening and the like in the anchor rod supporting process canbe integrally achieved, the supporting efficiency is improved, and rapid supporting of a roadway is achieved.

Description

technical field [0001] The invention relates to the technical field of coal mine roadway support, in particular to a multi-channel drilling and injection pretightening integrated bolt construction device and construction method. Background technique [0002] Bolt support can effectively control the deformation of surrounding rock, and has been widely used in coal mines, metal mines and other fields at home and abroad. Taking coal mine roadway support as an example, the existing bolt support process is as follows: use bolts to drill holes on the coal rock wall, manually insert resin anchoring agent into the punched holes, put them into the bolts and stir, and wait for anchoring Pre-tighten the anchor rod after the agent is cured. The main problems existing in the existing bolt support construction technology are as follows: On the one hand, it is difficult to manually insert the anchoring agent into the borehole, especially when the coal and rock mass is relatively broken or...

AI Technical Summary

Problems solved by technology

The main problems existing in the existing bolt support construction technology are as follows: On the one hand, it is difficult to manually insert the anchoring agent into the borehole, especially when the coal and rock mass is relatively broken or the borehole wall is uneven. It takes a certain amount of time to complete the installation of the anchoring agent, which reduces the support efficiency

On the other hand: Drilling, installing anchoring agent and preloading need to use different tools to complete, dismantling the drill pipe, switching between different tools takes a long time to complete

Therefore, the existing bolt construction technology is time-consuming, inefficient, labor-intensive, and difficult to realize automation, which can no longer meet the needs of rapid support for coal mine roadways.

Images