In-hole installation and recovery device for micro-seismic sensor on the basis of hot melt adhesive

Abstract

The invention discloses an in-hole installation and recovery device for a micro-seismic sensor on the basis of hot melt adhesive. The device consists of a base, hot melt adhesive, an electric heatingwire, a thermal insulation layer, a micro-seismic sensor, a sleeve and a lifting steel wire rope. The installation method for the device is that the lifting steel wire rope is connected with the top of the micro-seismic sensor; the thermal insulation layer is coated to the bottom and the periphery of the micro-seismic sensor; the electric heating wire is wound to the thermal insulation layer; thehot melt adhesive is evenly coated to the bottom of the base; the micro-seismic sensor passes through the fixing ring of the base and is vertically spliced to the bottom of the base; the hot melt adhesive is used for coupling the periphery of the sensor and the base; the base is connected with the bottom end of the sleeve; the sleeve is embedded into a rock mass drilling hole; the electric heatingwire is electrified to melt the hot melt adhesive on the bottom and the periphery of the sensor; and the lifting steel wire rope is used for traction to realize a purpose that the sensor and the baseare separated. By use of the device disclosed by the invention, the problems of an existing micro-seismic sensor that time and labor are wasted for installation and cost is high are solved, in addition, the micro-seismic sensor can guarantee to be favorably coupled with the rock mass, and the sensor can be easily installed and recovered.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering microseismic monitoring, in particular to a recovery device installed in the hole of a microseismic sensor based on hot melt adhesive, which is suitable for safety monitoring of disasters such as rockbursts, roof collapses, and ground pressure shocks induced by mine excavation. Evaluation and management, open-pit slope, pillar and stope stability evaluation, short-term and long-term monitoring of rock mass stability in public safety fields such as petroleum industry, civil engineering, environmental geology, nuclear waste, waste gas storage, and strategic oil reserves. Background technique [0002] When the rock mass is excavated or disturbed by the outside world, local stress concentration will occur inside it. When the energy accumulates to a certain critical value, it will cause the generation and expansion of micro-cracks in the rock mass, and the released elastic wave or stre...

AI Technical Summary

Problems solved by technology

[0005] (1) It is difficult to achieve good adhesion between the sensor and the hole wall;

[0006] (2) There is a risk of wear and damage of sensors and cables during the installation process of the broken rock mass drilling;

[0008] (4) The sensor installation and recovery structure is complicated, the production process is demanding and the cost is high

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