DEVICE FOR MEASURING DEFORMATIONS ON THE WALLS OF MINE WORKINGS Russian patent published in 2023 - IPC E21C39/00 

FIELD: mining.

SUBSTANCE: invention is a device for measuring deformations on the walls of mine workings, relates to geomechanics and is intended for assessing and predicting the stability of developed and operated mine workings, followed by measuring linear deformations that occur in the rock mass as a result of natural, static, dynamic loads and mechanical loading during drilling and blasting. The device includes removable benchmarks, an anchor and a measuring device. The anchor is made of two parts: the front part of the anchor is made of a reinforcing metal rod with soldered metallic triangles located along the circumference of the reinforcing rod over 120°, and the tail part of the anchor is made of a round metal rod, along the circumference of which after soldered metal rectangles are installed on both sides over 120°. On each side of the tail part of the anchor, there is one internal hole: one with a thread for connection with a removable benchmark, and the other is smooth for connecting the front and tail parts of the anchor to each other using arc welding.

EFFECT: increasing the reliability of fastening the anchor in the hole, increasing the reliability of field observations and ease of operation.

1 cl, 2 dwg