State analysis of the inclinometer tube for monitoring relative slippage between backfill and surrounding rock mass

ABSTRACT

This paper presents a methodology for analysing the state of an inclinometer tube used for in-situ monitoring of the relative slide between backfill and surrounding rock mass, based on the principles of elastic beam and elastic foundation beam theory. Through the utilisation of this approach, it becomes feasible to evaluate the appropriate depth for installation, the extent of measurement, and the operational state of the inclinometer tube. The mechanical response of the inclinometer tube was analysed using the new method and finite element method, with Longshou Mine serving as the background. The feasibility of the new method was subsequently confirmed.

KEYWORDS:

• inclinometer
• inclinometer tube
• backfill
• surrounding rock
• structural plane
• stability

Acknowledgments

We express our sincere thanks to the mining and geological staff at the Longshou Mine for their cooperation during the construction of the monitoring system of the large-area backfill-surrounding rock mass combination. This work is supported by the National Key R&D Program of China (2022YFC2904103), the Key Program of National Natural Science Foundation of China (52034001) and the 111 Project (B20041).

Disclosure statement

No potential conflict of interest was reported by the author(s).