Study of distribution properties of water and earth pressure at excavation face and in chamber of earth pressure balance shield with super-large diameter
HOU Yong-mao, YANG Guo-xiang, GE Xiu-run, et al. Study of distribution properties of water and earth pressure at excavation face and in chamber of earth pressure balance shield with super-large diameter[J]. 2012, 33(9).
HOU Yong-mao, YANG Guo-xiang, GE Xiu-run, et al. Study of distribution properties of water and earth pressure at excavation face and in chamber of earth pressure balance shield with super-large diameter[J]. 2012, 33(9).DOI:
The chamber pressure control is a key operation for controlling the impact of the earth pressure balance (EPB) shield excavation on the environment. Based on the monitored data
the water and earth pressure distribution properties in chamber and at the excavation face of a super-huge diameter EPB shield tunneling are studied. According to the construction parameters analysis
it is found that the increment of chamber pressure could be calculated by the construction parameters
such as rotation speed of screw conveyor and advancement rate. In addition
the water and earth pressure at excavation face could not be transfer to the chamber completely
and the transmissibility is about 76.3%. The research results of this paper provide valuable references for the setting method of the chamber pressure of the super-huge diameter EPB shield.