Soil nailing
    



	

		

			
Soil nails in the form of micropiles can be used to secure sections of slopes, unstable slopes and embankments, for the temporary and permanent anchorage of shotcrete facings, for securing excavations and in the refurbishment of retaining walls. The crucial advantage of soil nailing compared with conventional retaining structures is that nailing requires no additional excavation work.


The equipment required can be chosen to suit the local circumstances. This guarantees that almost every drilling position can be reached with suitable equipment.


The choice of head detail depends on the specific application. Head details can be


    

  • temporary or permanent,
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  • with or without angle compensation, and
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  • assembled from system components.
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The various possibilities for soil nailing are:


		

	



    

                    
             
                Slope stabilisation            
                    
             
                Excavation shoring            
                    
             
                Transport infrastructure            
                    
             
                Retaining walls            
                






    
    
    
Slope stabilisation
    




	

		

			
When it comes to stabilising slopes, our micropiles are frequently used in conjunction with high-strength wire meshes to secure the surface. In many cases the anchors for the wire mesh are installed together with rockfall fencing, which is also secured with micropiles. All exposed steel parts should be galvanised to ensure protection against corrosion.


Slope stabilisation applications:


    

  • Securing unstable slopes and critical earth slopes
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  • Measures to protect against rockfall
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  • Protection of structures and infrastructure
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    References
            

        Slope stabilisation    








    
    

    
        

        
        

            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


                    

        
    
        
    
    










    
    

    
    
    

        
        

        
        

      
            

    
                

                
                    

                    
                    

                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                                            

                
                

                

                

                
            

            
            
        

    

    





    
    
    
Excavation shoring
    




	

		

			
Temporary and permanent excavation shoring with micropiles to anchor shotcrete facing can be easily adapted to suit local circumstances. Heavy equipment is not required to construct walls to secure an excavation. The excavation is secured step by step, every approx. 1.5–2.0 m deep, as the excavation proceeds.


		

	






    References
            

        Excavation shoring    








    
    

    
        

        
        

            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


                    

        
    
        
    
    










    
    

    
    
    

        
        

        
        

      
            

    
                

                
                    

                    
                    

                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                                            

                
                

                

                

                
            

            
            
        

    

    





    
    
    
Transport infrastructure
    




	

		

			
Railways

Embankments (natural or man-made) alongside railway lines can be secured with micropiles acting as soil nails to stabilise slopes both above and below the tracks. Likewise, the stability of raised embankments for railway tracks can be improved by installing micropiles-applied as soil nails.


Roads

Slopes both above and below a road can be secured with micropiles acting as soil nails.


Canals

Embankments alongside canals can be secured with micropiles acting as soil nails as an alternative to sheet pile walls. A shotcrete facing and anchored wire mesh (to encourage vegetation) are also possibility here.


		

	






    References
            

        Transport infrastructure    








    
    

    
        

        
        

            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


            
            


                


                    

                        
                    


                    
                    
                        
                    


                                                        

            


                    

        
    
        
    
    










    
    

    
    
    

        
        

        
        

      
            

    
                

                
                    

                    
                    

                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                        
                        


                            

                                
                                    
                                                                    
                                


                                                                                            


                        


                                            

                
                

                

                

                
            

            
            
        

    

    





    
    
    
Retaining walls
    




	

		

			
Soil nailing with micropiles in combination with retaining walls is a frequent approach when designing slope stabilisation measures. Existing structures are often refurbished in these cases. In this design approach, the grid is smaller, the loads are lower and the elements are shorter than for typical anchorages for retaining structures according to DIN EN 14199.


		

	






    References
            

        Retaining walls