- Contact Person : Mr. Zu Hongjia
- Company Name : Hengshui Tianli Mining Equipment Co., Ltd.
- Tel : 86-0318-2218968
- Fax : 86-0318-2689288
- Address : Hebei,Hengshui,No. 11, Xiangsu Road, North Industrial Base, Taocheng Dist
- Country/Region : China
hollow grouting anchor
The company was founded in 2003
Registered capital:26 million yuan Engineering and technical personnel:86 persons
Fixed assets:68.98 million yuan Area:48000m2
Number of employees:380 persons Area of the building:30000m2
Successive application of the company's series production of hollow grouting anchor in the Water Control Project, railways, tunnels, highway slope, bridge base project,Successful resolution of technical problems need to be reinforced by a variety of adverse geological conditions, the only completely solve the traditional anchoring anchoring technique many problems.
Prestressed hollow grouting anchor consists of steel shell-expansion anchor head, hollow anchor rod, grouting stopper, arch plate and nut. Coupling and grouting block are optional.
It is designed for hard rock at fractured zone with growing joints which may cause loosing of fractured rock and reducing of friction between rocks, resulting in loosing of surrounding rocks in larger area. Applying enough pre-stress would keep its stability.
Construction Method:
1) Drill the hole and clean
2) Insert the anchor bolt to the hole bottom
3) Pre-stress the anchor rod and assure the anchor head contacting closely with hole bottom, then rotates the anchor rod until it is fastened, and install stopper, plate and nut;
4) Apply pre-stress to the designed value ,use the stretching gauge of anchor bolt or spanner;
5) Connect of grouting joints to grout
Product Specification:
specification | GY25 | GY28 | GY32 |
external diameter(mm) | 25 | 28 | 32 |
Breaking load(KN) | >150-180 | >180-220 | >220-250 |
Interior diameter(mm) | ≥15 | ≥17 | ≥22 |
drilling diameter(mm) | 42 | 42 | 51 |
thread type | left hand | ||
standard length(m) | 1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/6.0 | ||
length tolerance | ±2.5% |
hollow grouting anchor