Manufacturer of hollow grouting anchor rods for Huaye Coal Mine and self entering hollow anchor rods for mine tunnels

Description :

Used in Huaye MZGK190-42/24 coal mineHollow grouting anchor rod Mine tunnel self entering typeHollow anchor rod manufacturer

Hollow grouting anchor rod is a type of hollow anchor rod, commonly used in relatively stable and intact rock formations. Anchoring agents such as resin, engineering glue, and quick setting cement are injected from the center of the anchor rod, resulting in better anchoring quality than ordinary anchor rods. Due to the emergence of self advancing hollow grouting anchor rods, hollow grouting anchor rods can also be used in loose rock and soil conditions.

Hollow grouting anchor cable composition structure:

Anchor head: The barb on the anchor head can position the anchor rod in the drilled hole and ensure that the rod is well centered.

Anchor rod body: a construction in the assembly that plays a major role in anchoring and support.

Grouting stopper: Maintain grouting pressure during the grouting process to fully fill the gaps in the surrounding rock with grout.

Pad: withstand greater surrounding rock stress.

Nut: Concentrate the stress of the surrounding rock onto the cushion plate.

Characteristics of Hollow Grouting Anchor Rod Products:

Combining the functions of anchor rod and grouting pipe, it is a grouting pipe during grouting, and after grouting, it does not need to be pulled out to become an anchor rod.

The hollow design enables the anchor rod to function as a grouting pipe, avoiding the loss of mortar caused by the traditional construction process of pulling out the grouting pipe.

The grouting is full and can achieve pressure grouting, which improves the quality of the project.

Due to the functions of various accessories, the centering of the anchor rod body is very good, and the mortar can wrap the entire length of the anchor rod body, avoiding the risk of corrosion and achieving the purpose of long-term support.

Easy installation, no need for on-site threading, and convenient installation of pads and nuts. Ensure timely application of prestress Active tensioning, with a pre stress of up to 50KN, and can achieve appropriate over tensioning. Using conventional tools, a single person can perform tensioning operations. High pressure grouting can be achieved through hollow rods to improve the surrounding rock. Control the entire process from production to installation to ensure quality.The combination of a dedicated grouting pump for anchor rods and grouting technology is currently the most effective anchoring system in China that completely solves many problems with traditional anchoring support.

The anchor body of the hollow anchor rod adopts a hollow design, and the hole in the rod body serves as a high-pressure drilling channel and grouting channel. Compared with the solid rod body, the hollow rod body design can achieve better stiffness and shear strength. The outer surface of the anchor rod has a standard large pitch threaded structure, which facilitates the cutting and extension of the anchor rod. Compared with a smooth rod body, the threaded structure increases the bonding area between the anchor rod body and the grouting material, thereby improving the anchoring force.

AfterSalesService :

• Hollow grouting anchor rod