Distinctive setting and underground conservation zone of Yungang Grottoes, Datong, China

Fanxing, Meng (2005) Distinctive setting and underground conservation zone of Yungang Grottoes, Datong, China. In: 15th ICOMOS General Assembly and International Symposium: ‘Monuments and sites in their setting - conserving cultural heritage in changing townscapes and landscapes’, 17 – 21 oct 2005, Xi'an, China. [Conference or Workshop Item]

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Abstract (in English)

World Cultural Heritage Datong Yungan Grottoes excavated from easily weathered rock layers since 5 century AD with quality coal bed underground is situated in an area of 57.4 square kilometers around Wuzhoushan. Under the northern geographical and climate conditions, coal mining has been the major way to bring local habitants economic benefits. 16 mining zones distributed surrounding the site had their tunnels gradually approaching to the underground support of the property. Managing organ has estimated the tremors caused by underground mining, quarrying, trains and motor vehicles by using single-direction tromometry, and confirmed that Large-scale collapse of the exhausted mining areas had become the most hazards on the site that possibly lead to destructive human-caused disasters. The author proposed and will introduce with this paper a technical protection measure as delimiting a hopper-shaped tridimensional security zone of 300-meter depth underground, so called security pillar, which goes top down along the boundary of key distribution area taking the natural rock collapse angle of 70°, while the bottom boundary extends with the downward expansion of the mining operation.. The technique has been proved efficient during 30 years of practice. It provided a security model for the conservation of heritage in similar situation.

Item Type:	Conference or Workshop Item (Paper)
Authors:	Authors Email Fanxing, Meng UNSPECIFIED
Languages:	English
Keywords:	World Heritage List; grottoes; Buddhist cave art; setting; protection; conservation measures; vibration measurements; underground security pillar
Subjects:	M.WORLD HERITAGE CONVENTION > 03. World Heritage List E.CONSERVATION AND RESTORATION > 12. Techniques H.HERITAGE TYPOLOGIES > 28. World Heritage E.CONSERVATION AND RESTORATION > 05. Sites
Name of monument, town, site, museum:	Yungang Grottoes, Datong City, China
UNESCO WHC Number:	1039
ICOMOS Special Collection:	Scientific Symposium (ICOMOS General Assemblies)
ICOMOS Special Collection Volume:	2005, 15th
Depositing User:	Jose Garcia
Date Deposited:	05 Nov 2010 16:41
Last Modified:	13 Jan 2011 19:14
URI:	https://openarchive.icomos.org/id/eprint/334

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