R38自助钻石螺栓系统

R38 self drilling rock 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)
SSR38N	38	500	400	5.50
SER38N	38	500	400	4.95
SER38S	38	550	450	5.90

    Coupler

Size	Outer Dia. (mm)	Length (mm)	Weight (Kg/pc)	Note
SSR38	51	180	1.33	With sealing structure
	51	200	1.50
	51	220	1.67
SER38	51	180	1.38	Without sealing structure
	51	200	1.55
	51	220	1.68

    Hex Nut

Size	Key Size (mm)	Length (mm)	Weight (Kg/pc)	Note
SSR38	50	60	0.47	Heat treatment
	50	70	0.55
SER38	50	60	0.47	Without heat treatment

    Domed Nut

Size	Key Size (mm)	Length (mm)	Weight (Kg/pc)	Note
SSR38	52	60	0.61	Heat treatment
SER38	52	60	0.61	Without heat treatment

    Domed Plate

Size	Dimensions (mm)	Thickness (mm)	Hole Dia. (mm)	Weight (Kg/pc)
SER38	150×150	8	41	1.38
	200×200	12	41	3.60

    Flat Plate

Size	Dimensions (mm)	Thickness (mm)	Hole Dia. (mm)	Weight (Kg/pc)
SER38	140×140	35	41	5.00
	150×150	25	41	4.10
	200×200	12	41	3.67

    Centralizer

Size	Outer Dia. (mm)	Length (mm)	Weight (Kg/pc)
SER38	78	30	0.28

        

    Drill Bit

Size	Outer Dia. (mm)	Application Range (Advice)
EX			Sand, fills, gravel
SSR38/76	76
SSR38/90	90
SSR38/100	100
EX(Venturi)
SSR38/76	76
SSR38/90	90
EXX			Softer sedimentary rocks such as marls, mudstones, siltstone
SSR38/76	76
SSR38/90	90
SSR38/100	100
SSR38/115	115
SSR38/130	130
EXX(Venturi)
SSR38/56	56
SSR38/76	76
SSR38/90	90
Clay Bit			Clay, soft soil, marls, loose sand or gravel
SSR38/90	90
SSR38/100	100
SSR38/110	110
SSR38/130	130
SSR38/150	150
ES-F			Gravel, soft rock
SSR38/76	76
SSR38/90	90
SSR38/115	115
ESS-F			Weathered rock, stone walls, rubble
SSR38/76	76
SSR38/90	90
SSR38/115	115
EYY			Competent ground, strong rock
SSR38/76	76
SSR38/90	90
EY			Competent ground, strong rock
SSR38/76	76
SSR38/90	90
EC			Chalks, marls, fills, competent ground
SSR38/76	76
ECC			Chalks, marls, fills, competent ground
SSR38/76	76
XX			Sand, clay, fills, gravel
SSR38/110	110
SSR38/130	130
SSR38/150	150
ESS-D			Weathered rock, stone walls, rubble
SSR38/100	100
SSR38/115	115