Abstract：Aiming at the disadvantages of gravity grouting soil nailing，high-pressure grouting soil nailing is introduced in this paper，and its characteristics are discussed. Based on mechanics model of pullout，the transfer mechanism of pullout load of high-pressure grouting soil nailing is discussed. Moreover，the construction process is briefly presented. High-pressure grouting soil nailing has advantages in many aspects，including length of soil nailing，security coefficient of pull strength，bond strength of interface，stability against sliding. Its feasibility is proved in project example.
