The bottom of tank is level, and no slope.
池底为水平无坡度。
Stormwater pipeline design requirements should be the location of installation, suspension control is no slope to the level of the installation.
雨水管道应按设计规定的位置安装,悬吊管不设坡度、要水平安装。
First, there is no slope hole or silo, the auxiliary hole of construction adopts longitudinal ventilation only by jet Second, it belongs to deep buried hole, long body, little shape section.
第一辅助洞没有斜井或竖井,施工辅助洞采用全射流纵向通风。第二辅助洞埋深大,洞体长,洞形断面小。
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