CONSERVATIONAL ARCHITECTURE EVALUATION AND ENVIRONMENTAL CONTROL SYSTEM BASED ON LONG-TERM ENVIRONMENTAL MONITORING DATA – TAKING GUANGYUAN QIANFOYA CLIFF INSCRIPTIONS CONSERVATIONAL ARCHITECTURE ASSESSMENT AS AN EXAMPLE

Abstract. The environmental monitoring data of Qianfoya Cliff Inscriptions in Guangyuan, Sichuan Province accumulated since 2014 make it possible to analyze the environmental monitoring data in and out of the Experimental Structure of the Conservational Architecture of Qianfoya Cliff Inscriptions which was built in 2016. By comparing the long long-term environmental pattern and differences between the internal and external part of the section, the results indicate that the Conservational Architecture effectively decrease the frequency of short-term sever winds, strong sunshine and extreme high and low temperatures, reduces the short short-term temperature and humidity variation range, which creates a stable microenvironment conducive to the preservation of statues without changing the long long-term environmental transformation pattern. Moreover, a parameter system for evaluating the conservational architecture, which directly related to environmental damage factors and meets the requirement of measurability and controllability, has been established and control threshold of microenvironment adjustment, which divides abnormal environment state in three levels (caution states, Pre-warning states, Warning states), has been chosen so as to quantitatively evaluate the protection effect of the experimental structure and provide data guidance for daily protection work and environmental control. Based on this parameter system and control thresholds , the total duration of warning states in Qianfoya experimental structure can be reduced by 30% compared with that outside the experimental structure , which further proves that the experimental structure plays a significant role in alleviating the main natural deterioration factors in Qianfoya cliff.