As a tensile member that goes deep into the ground, the bolt is connected to the engineering structure at one end, and the other end goes deep into the ground. The whole bolt is divided into a free section and an anchor section. area, its function is to apply prestress to the anchor rod; the anchor section refers to the area where the cement slurry bonds the prestressed tendons to the soil layer, and its function is to increase the bonding friction between the anchor body and the soil layer, increasing The pressure-bearing effect of the anchoring body transmits the tension of the free section to the depth of the soil.
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PRODUCT PARAMETERS
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Type
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Outer Dia(mm)
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Inner Dia(mm)
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thickness(mm)
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Ultimate(KN) load
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Yield Load(KN)
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Weight(Kg/m)
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|||
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R25N
|
25
|
14
|
5.5
|
200
|
150
|
2.3
|
|||
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R32L
|
32
|
21.5
|
5.25
|
210
|
1600
|
2.8
|
|||
|
R32N
|
32
|
16
|
8
|
360
|
280
|
3.4
|
|||
|
R32S
|
32
|
16
|
8
|
360
|
280
|
4.1
|
|||
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R38
|
38
|
17/19/22
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10.5/9.5/8
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450/400/350
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550/500/420
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6.3/5.9/5.2
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|||
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R51
|
51
|
29/33/35
|
11/9/8
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800/660/550
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640/540/450
|
9/7.7/7
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|||
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T76N
|
76
|
51
|
12.5
|
1600
|
1200
|
15
|
|||
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T76S
|
76
|
45
|
15.5
|
1900
|
1500
|
19.7
|
|||
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T103N
|
103
|
78
|
12.5
|
2282
|
1800
|
27.3
|
|||
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T103S
|
103
|
51
|
26
|
3460
|
2750
|
42
|
|||
|
T30/11
|
30
|
11
|
9.5
|
320
|
260
|
3.1
|
|||
|
T30/14
|
30
|
14
|
8
|
260
|
220
|
2.8
|
|||
|
T30/16
|
30
|
15
|
7.5
|
220
|
180
|
2.7
|
|||
|
T40/16
|
40
|
16
|
12
|
660
|
525
|
7
|
|||
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T40/20
|
40
|
22
|
9
|
539
|
430
|
5.6
|
|||
|
T52/26
|
52
|
26
|
13
|
929
|
730
|
10
|
|||
|
T73/53
|
73
|
53
|
10
|
1630
|
970
|
12.3
|
|||
|
T73/56
|
73
|
56
|
8.5
|
1414
|
785
|
11
|
|||
|
T73/45
|
72
|
45
|
14
|
1630
|
1180
|
17.8
|
|||
|
T130/60
|
130
|
60
|
35
|
7940
|
5250
|
75
|
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Features of self-drilling anchor rod:
1) There is a bit with strong penetration force in front of the anchor rod, which can easily penetrate all kinds of rocks under the action of general rock drilling machinery.
2) The anchor rod has continuous international standard wavy thread, which can be used as drill pipe and drill bit to complete drilling and anchor hole.
3) The anchor rod body used as drill pipe does not need to be pulled out, and the hollow can be used as a grouting channel for grouting from inside to outside.
4) High-efficiency grout stop plug enables the grouting to maintain a strong grouting pressure, fully fill the gap, fix the broken rock mass, and high-strength backing plate and nut can evenly transfer the stress of the deep surrounding rock to the surrounding rock, so as to achieve the purpose of mutual support between the surrounding rock and the bolt.
5) The high-strength coupling sleeve processed by mechanical power cutting technology makes the self-drilling anchor rod have the characteristics of lengthening while drilling, making it suitable for a narrow construction space, and realizing the design idea of strengthening surrounding rock with extra-long anchor rod.
6) Due to the three-in-one function of the anchor rod, it can form the anchor hole and ensure the anchoring and grouting effect without special techniques such as casing wall protection and pre-grouting when it is constructed under various surrounding rock conditions.
