Study On The Luminous Environment In The Mogao Caves

Dunhuang Mogao Caves is the world’s largest existing Buddhist art sites in the holy land,the last century sixty’s has been listed as the national key cultural relics protection units and the world’s cultural heritage.As an important building system,the space system of Dunhuang Mogao Grottoes has preserved many ancient and precious murals,statues and historical relics which are closely related to Buddhism.The Mogao cave light environment directly influence to the caves in the protection of cultural relics and visual display effect.Therefore,the research on light environment of Dunhuang Mogao Grottoes Grottoes mural protection and historical information accurate witness an important guarantee.Now Mogao Grottoes protection and repair work mainly aims at is the material level of tangible heritage;domestic research about the Mogao cave light environment also most is considered from the point of view of architectural aesthetics are some subjective aspects of qualitative analysis and lack of quantitative research on the objective level.This paper from the Dunhuang area of the light climate environment and light environment of cave elements analysis of through the study of Mogao Grottoes at ambient light field investigations and measurements and the shapes of the cave and space from and subjective mural protection strategy from two aspects of the objective technical strategy of the light environment design of,Supplemented with the computer of the typical cave light environment simulation analysis,through on different positions of the murals in the grottoes wall body discoloration of comparative analysis,from different angles to demonstrate direct solar radiation will cause the cave murals of varying degrees of damage,and put forward the appropriate strategy of cave in the aura of environment protection.Thesis firstly,by referring to the relevant background information,the overview of Dunhuang area light climate characteristics: Dunhuang is located in the China the second light climate zone,natural light years average total illumination 26<EQ>28(Klx),the annual average scattering intensity 11.9klx,annual sunshine time number for 3246.7hours;understand the Mogao Grottoes Conservation History and environment and climate in place of Dunhuang is the basis for research of Dunhuang Grottoes space light environment.Secondly,obtained through field research dimensions and illuminance measured values of current light environment current situation of cave were quantitatively measured analysis,combined with the light environment of the computer simulation are analyzed and summed up the light on the cave wall murals with different surface damage,find out the cave space within existing at the present stage of some light environmental problems;And according to the inductive problem,combined with measured and theoretical research,proposed for the Mogao Grottoes in the future development and follow the cave murals protection principle of light environment related strategies.Finally,the comprehensive utilization of natural light and artificial lighting protection related research results,combined with the collection of information,measured and simulation results.Through analysis and research of different light environment protecting examples to clarify the appropriate to the Mogao cave display space light environment protection technology strategy,according to the visit and subjective visual feeling,make light environment design strategy;hope to Grottoes space light environment protection and design of inspiration.