标题：Study on in-situ monitoring of the surrounding rock pressure of the shallow large-span tunnel in the tunnel construction process
作者：Li, Xinzhi; Li, Shucai; Li, Yingyong; Li, Shuchen
作者机构：[Li, Xinzhi; Li, Shucai; Li, Yingyong; Li, Shuchen] Shandong Univ, Geotech & Struct Engn Res Ctr, Jinan 250100, Peoples R China.
会议名称：2nd International Conference on Materials Science and Engineering Application (ICMSEA 2012)
会议日期：JAN 07-08, 2012
来源：MATERIALS SCIENCE AND ENGINEERING APPLICATION II
关键词：surrounding rock pressure; in-situ monitoring; shallow large-span; tunnel; conditional curve
摘要：The surrounding rock pressure which was determined effectively through in-situ monitoring was the important parametric of the tunnel engineering design. According to in-situ monitoring of the surrounding rock pressure in the relied engineering. The adjustment and distribution characteristics of surrounding rock pressure of the shallow large-span tunnel with three-level seven-step parallel tunnel excavation was studied, the results showed that the arch and sides of the tunnel arch foot were the key parts which concentrated the surrounding rock pressure. The adjustment and distribution of surrounding rock pressure had not obvious relationships with tunnel face distance. Finally, the composite factors that impacted monitoring results of the surrounding rock pressure was analysed. The results had great significance on the development and perfection of the surrounding rock pressure theory in shallow large-span tunnel.