Abstract：The simulating driving test of shield machines is carried out by using a model shield of earth pressure balanced type with cutterheads of different open area ratios. Through measuring the earth pressure inside and outside the chamber，the relationship between earth pressure and open area ratios of cutterheads is gotten. Based on the theory of fluid mechanics，a calculation formula of the pressure change is deduced and the quantitative analysis of the influence of aperture ratio，tunnel diameter，soil parameters，additional stress on changes of the earth chamber pressure can be performed by means of the deduced formula. According to the formula，when the angle of internal friction and cohesive increase，the difference of chamber pressure and earth pressure outside become greater. Besides，when the rate of opening on cutterdisc and diameter of shield tunnel increate，the difference of chamber pressure and earth pressure outside become smaller. Comparisons between results of theoretical calculations and the other means，such as field monitoring and discrete element simulation analysis are done，which confirms the rationality of the gotten formula.
金大龙，袁大军，李兴高. 盾构土舱压力变化规律测试试验与理论分析[J]. 岩石力学与工程学报, 2016, 35(S1): 2960-2967.
JIN Dalong，YUAN Dajun，LI Xinggao. Test and theoretical analysis of change laws of earth chamber pressure. , 2016, 35(S1): 2960-2967.
ANAGNOSTOU G，KOVAR K. Face stability conditions with earth-pressure-balanced shields[J]. Tunnelling and Underground Space Technology，1996，11(2)：165-173.
[2]
魏建华，丁书福. 土压平衡式盾构开挖面稳定机制与压力舱土压的控制[J].工程机械，2005，(1)：18-19.(WEI Jianhua，DING Shufu. Excavating face stabilization mechanism of soil pressure balance shield and control of soil pressure in pressure cabin[J]. Construction Machinery and Equipment，2005，(1)：18-19.(in Chinese))
[3]
杨洪杰，傅德明，葛修润. 盾构周围土压力的试验研究与数值模拟[J]. 岩石力学与工程学报，2006，25(8)：1652-1657.(YANG Hongjie，FU Deming，GE Xiurun. Experimental study and numerical simulation of earth pressure around shield machine[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(8)：1652-1657.(in Chinese))
[4]
刘东亮. EPB盾构掘进的土压控制[J]. 铁道工程学报，2005，(4)：45-51.(LIU Dongliang. Soil pressure control for epb shield excavation[J]. Journal of Railway Engineering Society，2005，(4)：45-51.(in Chinese))
[5]
朱合华，徐前卫，廖少明. 土压平衡盾构法施工参数的模型试验研究[J]. 岩土工程学报，2006，28(5)：553-557.(ZHU Hehua，XU Qianwei，LIAO Shaoming. Experimental study on working parameters of EPB shield machine[J]. Chinese Journal of Geotechnical Engineering，2006，28(5)：553-557.(in Chinese))
[6]
徐前卫，朱合华，廖少明. 软土地层土压平衡盾构法施工的模型试验研究[J]. 岩土工程学报，2007，29(12)：1849-1857.((XU Qianwei，ZHU Hehua，LIAO Shaoming. Experimental study on EPB shield tunnel construction in softground[J]. Chinese Journal of Geotechnical Engineering，2007，29(12)：1849-1857.(in Chinese))
[7]
胡新朋，孙谋，李建华，等. 地铁EPB 盾构不同地层土仓压力设置问题研究[J]. 地下空间与工程学报，2006，2(8)：1413-1417.(HU Xinpeng，SUN Mou，LI Jianhua，et al. Computing of supporting pressure of working chamber for EPB shield applied in metro[J]. Chinese Journal of Underground Space and Engineering，2006，2(8)：1413-1417.(in Chinese))
[8]
MELIS M M J，MEDINA R luis E. Discrete numerical model for analysis of earth pressure balance tunnel excavation[J]. Journal of Geotechnical and Geoenvironmental Engineering，2005，(10)：1234-1242.
[9]
NEZAMI E G，HASHASH Y M A，ZHAO D W，et al. Simulation of front end loader bucket-soil interaction using discrete element method[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2007，31(9)：1147-1162.
[10]
CLEARY P W. DEM simulation of industrial particle flows：case studies of dragline excavators，mixing in tumblers and centrifugal mills[J]. Powder Technology，2000，109(1)：83-104.
[11]
FLEISSNER F，GAUGELE T，EBERHARD P. Applications of the discrete element method in mechanical engineering[J]. Multibody System Dynamics，2007，18(1)：81-94.
[12]
SHMULEVICH I，ASAF Z，RUBINSTEIN D. Interaction between soil and a wide cutting blade using the discrete element method[J]. Soil andTillage Research，2007，97(1)：37-50.
[13]
HORNER D A，PETERS J F，CARRILLO A.Large scale discrete element method modeling of vehicle-soilinteraction[J]. Journal of Engineering Mechanics，2001，127(10)：1027-1032.
[14]
MOMOZU M，OIDA A，YAMAZAKI M，et al. Simulation of a soil loosening process by means of the modified distinct element method[J]. Journal of Terramechanics，2003，39(4)：207-220.
[15]
武力，屈福政，孙伟，等. 基于离散元的土压平衡盾构密封舱压力分析[J].岩土工程学报，2010，32(1)：18-23.(WU Li，QU Fuzheng，SUN Wei，et al. Discrete numerical model for analysis of chamber pressure of earth pressure balance shield machine[J].Chinese Journal of Geotechnical Engineering，2010，32(1)：18-23.(in Chinese))
[16]
王洪新，傅德明. 土压平衡盾构掘进的数学物理模型及各参数间关系研究[J]. 土木工程学报，2006，39(9)：86-90.(WANG Hongxin，FU Deming. A mathematical model and related parameters for EPD shield tunneling[J]. China Civil Engineering Journal，2006，39(9)：86-90.(in Chinese))
[17]
王洪新. 软土层土压平衡盾构配置参数计算与平衡控制[博士学位论文][D]. 上海：同济大学，2009.(WANG Hongxin．Calculation of device parameters and balance control of EPB shield in soft soil strata[Ph. D. Thesis] [D].Shanghai：Tongji University，2009.(in Chinese))
[18]
李向红，傅德明. 土压平衡模型盾构掘进试验研究[J]. 岩土工程学报，2006，28(9)：1 101-1 105.(LI Xianghong，FU Deming.Experimental study on excavation behavior using model EPB shield with a diameter of 1.8m[J]. Chinese Journal of Geotechnical Engineering，2006，28(9)：1 101-1 105.(in Chinese))
2016, Vol. 35 
