T thread self drilling rock bolt adopts groove-thread anchor bar, it can bond hollow bar with grouting materials effectively. It can be widely used in different projects, such as: mining, tunneling, hydroelectric station, civil construction and so on.
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Introduction
As an efficient anchoring method, self drilling rock bolt is used in complicated, loose and broken geological condition. It’s widely applied to pre-support project, radial support project, slope stabilization, foundation support project, roadway support project, soil nail wall, back pull anchor rod retaining wall and other rock supporting work.
Functions:
Self drilling rock bolt 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:
Self drilling rock bolt system is mainly used for slope stabilization, foundation with micropiles and tunneling, it’s also widely used in the railway system, metro project, etc. It can be installed in sites with weak rocks, loose soil, weathered layer, sand with stone layer and so difficult to create a hole in complex formation. The unconsolidated ground condition favor the self drilling anchor bolt technique for fast and simple method of installed compared to the traditional method.
Features and advantages:
1. It features a hollow bore for flushing, or simultaneous drilling and grouting.
2. Reliable, Efficient and Convenient.
3. Choice of drill bits for different ground conditions.
4. It can be elongated by using couplers.
5. Suitable for anchoring in broken geological condition and narrow space, which has achieved perfect effect.
Construction Process:
T30
T40
T52
T73
T76
T103
T111
T127
T130
T150
T200
Technical Data:
Hollow Anchor Bar
Size
Outer Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SST30L
30
220
180
2.90
SST30N
30
260
220
3.35
SST30S
30
320
260
3.60
SET30S
30
320
260
3.35
Coupler
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST30
38
105
0.39
With sealing structure
SET30
38
105
0.45
Without sealing structure
Hex Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST30
46
35
0.29
Heat treatment
SET30
46
35
0.31
Without heat treatment
Spherical Collar Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST30
46
35
0.33
Heat treatment
SET30
46
35
0.33
Without heat treatment
Flat Plate
Size
Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SST30
150×150
25
40
4.20
200×200
8
36
2.43
Centralizer
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SET30
70
35
0.20
Drill Bits
Size
Outer Dia.
(mm)
Application Range (Advice)
EX
Sand, fills, gravel
SST30/51
51
SST30/76
76
EXX
Softer sedimentary rocks such as marls, mudstones, siltstone
SST30/51
51
SST30/76
76
EXX(Venturi)
SST30/63
63
Clay Bit
Clay, soft soil, marls, loose sand or gravel
SST30/76
76
SST30/95
95
ES-F
Gravel, soft rock
SST30/51
51
ESS-F
Weathered rock, stone walls, rubble
SST30/51
51
EYY
Competent ground, strong rock
SST30/76
76
Technical Data:
Hollow Anchor Bar
Size
Outer Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SST40N
40
539
430
6.20
SST40S
40
660
525
7.20
SET40N
40
539
430
5.70
SET40S
40
660
525
6.80
Coupler
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST40
54
140
1.09
With sealing structure
57
140
1.37
SET40
54
140
1.11
Without sealing structure
57
140
1.39
Hex Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST40
65
50
0.92
Heat treatment
SET40
65
50
0.92
Without heat treatment
Spherical Collar Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST40
65
50
0.86
Heat treatment
SET40
65
50
0.86
Without heat treatment
Flat Plate
Size
Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SST40
115×115
20
56
1.60
125×125
24
56
2.40
200×200
12
56
3.28
200×200
30
56
8.50
Centralizer
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SET40
88
40
0.36
Drill Bit
Size
Outer Dia.
(mm)
Application Range (Advice)
EX
Sand, fills, gravel
SST40/100
100
SST40/115
115
EX(Venturi)
SST40/76
76
SST40/90
90
EXX
Softer sedimentary rocks such as marls, mudstones, siltstone
SST40/76
76
SST40/90
90
SST40/100
100
SST40/115
115
SST40/130
130
SST40/150
150
EXX(Venturi)
SST40/76
76
SST40/90
90
SST40/100
100
Clay Bit
Clay, soft soil, marls, loose sand or gravel
SST40/90
90
SST40/100
100
SST40/110
110
SST40/115
115
SST40/150
150
ES-F
Gravel, soft rock
SST40/76
76
SST40/90
90
ESS-F
Weathered rock, stone walls, rubble
SST40/64
64
SST40/76
76
SST40/90
90
SST40/100
100
Technical Data:
Hollow Anchor Bar
Size
Outer Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SST52N
52
929
730
10.20
SET52N
52
929
730
9.70
Coupler
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST52
70
160
2.31
With sealing structure
SET52
70
160
2.46
Without sealing structure
Hex Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST52
80
70
1.74
Heat treatment
SET52
80
70
1.74
Without heat treatment
Spherical Collar Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST52
80
70
2.30
Heat treatment
SET52
80
70
2.30
Without heat treatment
Flat Plate
Size
Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SST52
145×145
27
65
3.60
200×200
30
65
8.59
220×220
35
65
13.10
Centralizer
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SET52
112
35
0.39
Drill Bit
Size
Outer Dia.
(mm)
Application Range (Advice)
EX
Sand, fills, gravel
SST52/115
115
SST52/130
130
SST52/150
150
SST52/175
175
EXX
Softer sedimentary rocks such as marls, mudstones, siltstone
SST52/90
90
SST52/100
100
SST52/115
115
SST52/130
130
SST52/150
150
EXX(Venturi)
SST52/100
100
Clay Bit
Clay, soft soil, marls, loose sand or gravel
SST52/130
130
SST52/150
150
SST52/175
175
SST52/200
200
ES-F
Gravel, soft rock
SST52/115
115
ESS-F
Weathered rock, stone walls, rubble
SST52/76
76
SST52/100
100
SST52/115
115
SST52/130
130
SST52/150
150
Technical Data:
Hollow Anchor Bar
Size
Outer Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SET73L
73
1160
970
13.20
SET73N
73
1585
1270
17.80
SET73S
40
1865
1430
21.20
Coupler
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST73
89
235
3.82
With sealing structure
95
245
5.70
Spherical Collar Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SET73
95
70
1.90
Without heat treatment
Flat Plate
Size
Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SST73
175×175
34
80
6.85
250×250
40
80
18.00
Centralizer
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SET73
130
65
1.08
Drill Bit
Size
Outer Dia.
(mm)
Application Range (Advice)
EX
Sand, fills, gravel
SST73/130
130
SST73/175
175
EXX
Softer sedimentary rocks such as marls, mudstones, siltstone
SST73/130
130
Clay Bit
Clay, soft soil, marls, loose sand or gravel
SST73/150
150
SST73/200
200
SST73/250
250
SST73/280
280
SST73/175
175
ESS-F
Weathered rock, stone walls, rubble
SST73/130
130
Technical Data:
Hollow Anchor Bar
Size
Outer Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SET76N
76
1600
1200
16.50
SET76S
76
1900
1500
19.70
Coupler
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST76
95
200
4.26
With sealing structure
95
220
4.80
Hex Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST76
100
75
2.40
Heat treatment
100
80
2.67
SET76
100
80
2.67
Without heat treatment
Flat Plate
Size
Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SST76
250×250
60
80
27.00
250×250
40
80
18.00
Centralizer
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SET76
130
45
0.86
Drill Bit
Size
Outer Dia.
(mm)
Application Range (Advice)
EX
Sand, fills, gravel
SST76/115
115
SST76/130
130
SST76/150
150
SST76/200
200
SST76/175
175
EXX
Softer sedimentary rocks such as marls, mudstones, siltstone
SST76/130
130
SST76/150
150
SST76/175
175
SST76/200
200
EXX(Venturi)
SST76/140
140
SST76/150
150
Clay Bit
Clay, soft soil, marls, loose sand or gravel
SST76/130
130
SST76/150
150
SST76/175
175
SST76/200
200
SST76/300
300
ES-F
Gravel, soft rock
SST76/130
130
ESS-F
Weathered rock, stone walls, rubble
SST76/120
120
SST76/130
130
SST76/150
150
SST76/200
200
EY
Chalk, gravel
SST76/130
130
XX
Sand, clay, fills, gravel
SST76/130
130
SST76/145
145
SST76/175
175
SST76/200
200
Technical Data:
Hollow Anchor Bar
Size
Outer Dia.
(mm)
Ultimate Load
(kN)
Yield Load
(kN)
Weight
(Kg/m)
SET103N
103
2270
1800
23.50
SET103S
103
3660
2670
44.60
Coupler
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SST103/78
125
255
8.02
With sealing structure
SST103/51
133
290
13.00
Spherical Collar Nut
Size
Key Size
(mm)
Length
(mm)
Weight
(Kg/pc)
Note
SET103/78
125
80
3.42
Without heat treatment
SET103/51
125
130
5.60
Without heat treatment
Flat Plate
Size
Dimensions
(mm)
Thickness
(mm)
Hole Dia.
(mm)
Weight
(Kg/pc)
SST103/78
240×240
48
110
18.00
SST103/78
300×300
50
110
32.60
SST103/51
285×285
67
110
37.60
SST103/51
330×330
60
110
46.50
Centralizer
Size
Outer Dia.
(mm)
Length
(mm)
Weight
(Kg/pc)
SET103
165
80
2.50
Drill Bit
Size
Outer Dia.
(mm)
Application Range (Advice)
EX
Sand, fills, gravel
SST103/175
175
SST103/200
200
EXX
Softer sedimentary rocks such as marls, mudstones, siltstone