The invention involves an anchorage method to reinforcing and maintaining the layer of rock and soil, namely the construction method of producing the prestress
anchor bolt using the mechanical reaming
reamer. It includes drilling, reaming, washing and slip
casting, the slurries are wrapped with the prestress dabber together and are solidified to forming the
anchor bolt. The second slip
casting is needed after the first slip
casting according the design requirements; the second slip casting adopts
high pressure splitting casting
pipe or many pipes. The construction method of the invention applies to ground
layers with different soil strata, it can work in the direction of
horizontal angle is 0~90degree, it is equipped with cylinderin volumes and conical reaming volumes along the length of the anchor bar; it can ream only once, and can ream many times or for many volumes, and they are connected with each other for a whole to increasing the contact area between the
anchor bolt and the rock or soil. Because of the combination of the effect of anchor bolt end bearing and the effect of friction, it doubles the
carrying capacity of anchor bolt and correspondingly shortens the length of the anchor bolt, so it has significant
economic benefits.