An automatic monitor for the stress of the stretchable bolt on the hanging surface

Abstract

The invention discloses a hanging section stretching anchor rod stress automatic monitoring device and a usage method thereof. One end of an external pipe (4) is connected with one end of an inner pipe (3) to form a connecting pipe, end parts of the connecting pipe are provided with protective covers, the inner pipe (3) is provided with at least a stretching device (9), the stretching device (2) is provided with a support pipe (10), an inner wall of the inner pipe (3) is provided with at least one vibrating wire transducer (5) and a collecting wire (9) electrically connected with the vibrating wire transducer (5), the other end of the inner pipe (3) is provided with a stretching device controller (8), and the other end of the external pipe (4) is provided with a pallet (6) and a fastening cap (7) with a baffle. According to the hanging section stretching anchor rod stress automatic monitoring device and the usage method thereof, the installation is rapid, and the usage is convenient.

Description

technical field [0001] The invention relates to an instrument for automatically monitoring the stress of an extensible anchor on a hanging surface, which is an instrument for automatically monitoring the stress of an anchor that can be installed quickly and easily. technical background [0002] The safe and effective development of deep energy and mineral resources is a major issue related to the sustainable development of the national economy and the security of the national energy strategy. With the continuous increase of mining depth, various disasters are increasing, such as mine rock burst and large deformation of soft rock, which pose a huge threat to safe and efficient mining, and bolt support is necessary for deep mining, so the research on bolt The stress in the rock mass can better provide technical support for safe and efficient deep mining. [0003] At present, there are vibrating wire bolt stress monitors for the collection of bolt stress and strain. The instal...

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Problems solved by technology

[0003] At present, the instrument for collecting the stress and strain of anchor bolts is the vibrating wire anchor stress monitor. The installation process of the vibrating wire anchor stress monitor is relatively complicated. It is necessary to drill a hole first and insert the vibrating wire anchor stress monitor. And use a grouting machine to grout it, make it coupled with the surrounding rock mass, and achieve monitoring. This process requires a lot of time, money and manpower

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