Monitoring system for settlement deformation of drill hole and monitoring method

Abstract

The invention discloses a monitoring system for settlement deformation of a drill hole and a monitoring method. The monitoring system comprises a liquid pipeline arranged in a horizontal drill hole ofa rock mass, and the outer end of the hole of the liquid pipeline is connected with a liquid reservoir; a reference point serving as a datum point is arranged at a relatively non-deformed point at the bottom of the drill hole or on the exterior of the drill hole, and a plurality of measuring points are distributed in the drill hole; both the datum point and the measuring points are provided withmicro-pressure sensors; the signal output ends of all micro-pressure sensors are electrically connected on corresponding ports of a hole external pressure sensor data acquisition instrument through lead wires. After the drill hole is deformed, the liquid level difference between the liquid pipeline and the liquid reservoir is changed, the pressure generated by the liquid level difference directlyacts on the micro-pressure sensors, and the settling volume of each measuring point is obtained by virtue of pressure values before and after degeneration of the drill hole. The monitoring system andthe monitoring method disclosed by the invention has the advantages of wide adaptability, simple structure, convenient implementation, low cost and stable and reliable measured data, and provides a way for deformation monitoring of geotechnical engineering.

Description

technical field [0001] The invention relates to deformation and stability monitoring technology of tunnels, side slopes and underground engineering rock mass in transportation, water conservancy and hydropower, mines and urban construction. Background technique [0002] The stability of rock mass is the main problem of geotechnical engineering, mining engineering, slope engineering and underground engineering. By monitoring the deformation law and dynamics inside the rock mass, it is of great significance for judging the stability of the rock mass, predicting dangerous situations, and preventing them before they happen. [0003] At present, there are many methods for monitoring the displacement inside the rock mass, but the application of each method is subject to different restrictions. Therefore, it is very necessary to continuously research and develop different monitoring methods for internal deformation of rock mass to adapt to different engineering conditions. [000...

AI Technical Summary

Problems solved by technology

[0003] At present, there are various methods for monitoring the displacement inside the rock mass, but the application of each method is subject to different restrictions.

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