Mining Roadway Anchors In The Use Of What To Do Before The Inspection

Mining roadway anchors in the use of what to do before the inspection

Mining anchor is the basic component of tunnel support in contemporary coal mines, which is used in the support of the surrounding rock of the mine tunnel and underground project, and can ensure the stability of the surrounding rock of the mine tunnel and underground project. It reinforces the surrounding rock of the roadway together, so that the surrounding rock supports itself. The rod of mining anchor has rolled continuous threads throughout its length, with equal strength throughout its length; the fastening end is equipped with pre-stressing spacers and ball-type nuts.

Mining roadway anchor rod to check the orientation of the positioning stopper ring and limit slurry ring, damaged, according to technical requirements to replace; check the orientation of the exhaust pipe and the smoothness of the situation; anchor cable sent into the hole, when the positioning stopper ring reaches the mouth of the hole, stop the push, the device of grouting pipe and the one-way valve door; anchor in place, and then check again whether the exhaust pipe is fluent, if not, pull out the anchor cable, troubleshooting and then start from the beginning of the delivery of the cable.

At the same time can be synchronized to measure the temperature value of the burial point, such as strong anchor head in place after the orifice, will block the orifice cement paper lift off, then quickly stab the rod body and device in place. If there is no cement mortar overflow from the hole, it means that the injected mortar is insufficient, and the rod should be pulled out and filled from the beginning before installing the anchor; the degree of the anchor rod body piercing into the hole should not be less than the design provisions.

The degree of fullness of mining roadway anchor is the key to ensure the quality of installation, and the process requires the grouting pipe to be inserted to 5~10㎝ from the bottom of the hole and pulled out slowly and evenly with the injection of mortar to prevent the pipe from being pulled out too quickly and forming a mortar disconnection in the hole. When the mortar is not enough, the mortar should be reinjected. This is to ensure that the whole length of the anchor rod is held by sufficiently full mortar to ensure its anchoring effect.

When the measured structure of the internal stress changes, such as mining roadway anchor will be tensile or compression, steel sleeve synchronization deformation, deformation, such as strong anchor stress gauge feel tensile or compression deformation, deformation is transmitted to the vibrating string into the vibrating string stress changes, and then change the vibrating string oscillation frequency.