Abstract
The grotto rock mass is a type of cave structure, formed under the complex forces of environment, geology, and human interventions. Many scholars have carried out a lot of work in the protection of cultural relics. However, the research on detection and monitoring methods based on the parametric evolution system remains incomplete. In recent years, with the intersection and integration of disciplines, IoT (IoT: Internet of Things) systems and sensor technologies have developed rapidly. Under this background, a new monitoring system suitable for the protection of cultural relics was independently developed and applied to the protection and research work of Yuanjue rock cave, and the system was corrected and improved in practice. In this paper, according to the complex force characteristics of the sandstone roof of the Yuanjue rock cave at Dazu Rock Carvings and the geological conditions. Initially, a detailed survey of the geological conditions of the Yuanjue rock cave area was conducted; furthermore, according to the unique structural and load characteristics of the outer and inner surfaces of the roof, the monitoring methods and principles of each main control factor were explored, while the layout of monitoring points was optimized; finally, based on the microsensing technology, intelligent high-precision sensing hardware was installed and debugged for each main control factor, while the network was formed to form a multisource monitoring IoT system for the roof stability of the circular sense hole. After nearly half a year of continuous monitoring, the deformation and denudation rules of the roof of Yuanjue Cave were revealed, and a new approach of evaluating roof stability was proposed. This research provided technical support and research ideas for monitoring the stability of similar cultural relics.
Highlights
Academic Editor: Zhixiong Li e grotto rock mass is a type of cave structure, formed under the complex forces of environment, geology, and human interventions
Introduction e grotto rock mass is a type of cave structure under the complex forces of environment, geology, and human interventions. e grottoes in China were first built in Xinjiang in the 3rd century A.D. and were developed eastwards along the Silk Road with Buddhism
Zhang et al [2], the micro- and mechanical properties of Dafowan stone carving in Dazu were studied through X-ray diffraction and optical microscopy; Fu Changhua et al studied the Mogao Grottoes in Dunhuang and analyzed the possible damage caused by earthquakes to the cave surrounding rocks and auxiliary structures through the dynamic finite element method [3]; Gao Bingli et al utilized factor investigation and
Summary
Dazu Rock Carvings were composed of cliff statues and inscriptions of Beishan, Baoding, Nanshan, Shizhuan, and Shimen mountains. Yuanjue rock cave is located in the western part of the south cliff of Baoding Dafowan. It was one of the most representative works of carving in Baoding Mountain Cliff Statue. 3. Monitoring Method and Principle of Surrounding Rock Stability of Yuanjue Rock Cave. The multisource monitoring method was utilized to monitor the stability and deformation of the surrounding rock of Yuanjue rock cave. Monitoring Data Analysis e roof deformation was comprehensively monitored through the multisource monitoring method [20]. e system principle is presented in Figure 5. e data detected by each monitoring point were transmitted to the monitoring and prediction center via the base station through wireless transmission
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