bottom outlet meaning in English

泄水底孔

The construction scheme is briefly introduced herein , and furthermore , the diversion structures , the composite scheme consisting of open caisson group adopted to treat the overburden of the foundation for the stage 2 longitudinal concrete cofferdam and the diversion method of bottom outlet combined with the dam gap used for the stage 2 diversion are described as well
文中对该方案进行了简要介绍，并介绍了有关导流建筑物，以及二期纵向混凝土围堰堰基覆盖层采用了沉井群等综合处理方案和二期导流采用的底孔加缺口联合泄流方式。
4 ) three - dimensional nonlinear analysis of the bottom outlet of the xiao wan arch dam is presented using sub - model techniques . the structural characteristics and failure mechanism of the bottom outlet , under loading of concrete deadweight , hydraulic pressure , internal water pressure and temperature are studied . it is shown that the meshing of the structure becomes easy and the computing time is reduced by using sub - modeling method
4 )对小湾拱坝的1 ~ #底孔进行了三维非线性分析，研究了孔口在坝体自重、库水压力、孔内水压力和库水温度影响等作用下的孔口应力分布、混凝土开裂、裂缝发展规律以及配筋对孔口开裂和裂缝扩展的影响。