R32自助钻孔空心条系统

Self drilling anchor bolt is composed by hollow anchor bolt, anchor nut, anchor plate, anchor coupler, drill bit, centralizer, and the hollow anchor bars can be cut and lengthened by coupling on request.

Functions:
Self drilling anchor system is an advanced system which can ensure the anchoring effect for complex ground conditions. It can be integrated with the functions of drilling, grouting and anchoring.

Conditions:
• Tunneling
• Mining
• Slope Stabilization
• Foundation Support

Cases:







Features and advantages:
1. Safe, reliable, and time saving.
2. Simple installation & operation.
3. Choice of drill bits for different ground conditions.
4. Grouting works synchronize with drilling or after drilling. Grout can fill fractures effectively.
5. Anchor bars can be cut and lengthened on request, applying to narrow spaces.
6. It provides higher bonding stress than smooth steel pipe depending on continuous wave thread.

Construction Process:

Technical Data:

 

    Hollow Anchor Bar

Size	Outer Dia. (mm)	Ultimate Load (kN)	Yield Load (kN)	Weight (Kg/m)
SSR32L	32	210	160	2.83
SSR32N	32	280	230	3.50
SSR32S	32	360	280	4.00
SER32L	32	210	160	2.60
SER32N	32	280	230	2.95
SER32S	32	360	280	3.50
SER32S1	32	405	320	4.00
SCR32L1	32	250	190	2.60
SCR32N	32	280	230	2.83

    Coupler

Size	Outer Dia. (mm)	Length (mm)	Weight (Kg/pc)	Note
SSR32	42	145	0.79	With sealing structure
	42	160	0.86
	42	190	1.00
SER32	42	145	0.77	Without sealing structure
	42	160	0.84
	42	190	1.00

    Hex Nut

Size	Key Size (mm)	Length (mm)	Weight (Kg/pc)	Note
SSR32	46	45	0.37	Heat treatment
	46	55	0.46
SER32	46	45	0.37	Without heat treatment

    Domed Nut

Size	Key Size (mm)	Length (mm)	Weight (Kg/pc)	Note
SSR32	46	45	0.38	Heat treatment
SER32	46	45	0.38	Without heat treatment

    Domed Plate

Size	Dimensions (mm)	Thickness (mm)	Hole Dia. (mm)	Weight (Kg/pc)
SER32	150×150	8	35	1.30
	150×150	10	35	1.70
	175×175	8	35	1.90
	200×200	8	35	2.60
	200×200	10	34	2.94
	200×200	12	35	3.52

    Flat Plate

Size	Dimensions (mm)	Thickness (mm)	Hole Dia. (mm)	Weight (Kg/pc)
SER32	95×95	25	35	1.60
	120×120	30	35	3.20
	150×150	8	35	1.30
	200×200	10	35	3.06

    Centralizer

Size	Outer Dia. (mm)	Length (mm)	Weight (Kg/pc)
SER32	72	30	0.27

       

    Drill Bit

Size	Outer Dia. (mm)	Application Range (Advice)
EX			Sand, fills, gravel
SSR32/42	42
SSR32/51	51
SSR32/76	76
EX(Venturi)
SSR32/64	64
SSR32/76	76
EXX			Softer sedimentary rocks such as marls, mudstones, siltstone
SSR32/42	42
SSR32/51	51
SSR32/64	64
SSR32/76	76
EXX(Venturi)
SSR32/76	76
Clay Bit			Clay, soft soil, marls, loose sand or gravel
SSR32/76	76
SSR32/90	90
SSR32/100	100
SSR32/110	110
ES-F			Gravel, soft rock
SSR32/42	42
SSR32/51	51
SSR32/64	64
SSR32/76	76
ESS-F			Weathered rock, stone walls, rubble
SSR32/42	42
SSR32/51	51
SSR32/64	64
SSR32/76	76
EYY			Competent ground, strong rock
SSR32/51	51
SSR32/76	76
EY			Chalk, gravel
SSR32/51	51
SSR32/76	76
EC			Chalks, marls, fills, competent ground
SSR32/51	51
ECC			Chalks, marls, fills, competent ground
SSR32/51	51