What is anchoring agent? Anchor agent is a material used to reinforce anchored solids. Metal anchor rod support is a commonly used form of support in coal mine tunnel excavation. The main technical performance is as follows: early strength within half an hour is 12-18mpa, 4h is 25-30mpa, and 28d is 50-60mpa. Good construction performance, not limited by the site. No corrosive effect on steel bars, good impermeability. The linear expansion rate is 3%.
Anchor agent is a bonding material made of auxiliary materials such as synthetic resin in a certain proportion. Good room temperature curing performance and fast curing speed. Anchor agents are suitable for tunnel support, installation of shaft equipment, underground engineering, slopes, steep wall anchor spraying support, and anchoring of building components. The anchoring medium for anchor rods and flexible anchor rods (anchor cables) is resin anchor agent, which is used for coal mines, tunnel roof and slope support.
Its product formula is unique, with fast stirring speed, and products with fast curing speed can be selected. At present, many coal mines in China have fully promoted the application of resin anchoring agents in mine tunnels and anchor spray support engineering. Due to the reliable anchoring force of anchor rods, safety accidents with resin anchor rods have never occurred in China, and the comprehensive cost per meter of tunnel support is relatively low. Therefore, anchoring agents are the best anchoring materials in modern engineering. At present, it has been widely used in many fields and has the following performance characteristics: fast bearing capacity and large anchoring force. Has the characteristic of rapid curing. After installation, it can withstand loads in a timely manner, and has strong adaptability and a wide range of applications.
It can anchor various rigid objects such as wood, metal, fiberglass, etc. Anchor agents are not only used in tunnel support and prestressed anchor cable reinforcement, but also widely used in fields such as building reinforcement, tunnel construction, equipment foundation and component anchoring. And it is easy to install and has good support effect.
Anchor agent, installation operation process center: The specification and model of resin anchor agent should be selected according to the drilling diameter. According to the specifications of the resin anchoring agent and the length of the anchor rod, the drilling depth is determined to be 60-80mm longer than the full length of the anchor rod. Clean the dust in the eyes with air pressure 4. According to the designed anchoring length, push the selected resin anchoring agent and rod body into the bottom of the hole at a uniform speed. The stirring time of the ultra fast anchoring agent is 8-15 seconds, while the stirring time of other anchoring agents is 20-35 seconds.
After dismantling the mixer, promptly wedge the rod into the hole. Before curing, especially when installing the top hole, do not move or shake the rod. The anchoring force should be tested after 15 minutes at high speed and 40 minutes at medium speed. After 12 minutes, the upper bracket can be tightened to withstand the load. Mixing installation tools should be installed according to on-site installation and mixing conditions, or electric coal drilling machines with joints and nuts should be used.
It is more convenient to drill holes and install bolts on the same machine when using an anchor drilling rig. Storage and transportation of resin anchoring agent: The resin anchoring agent should be stored indoors at 25 ℃, without sunlight exposure, and away from sources of fire. Store below 25 ℃ for 6 months. Expired products can be reused after being tested for softness. When the resin is cured or not flowing, it is not allowed to be used. The anchoring agent is packaged in cardboard boxes and tied with woven bags. Handle with care and do not damage it.