盘道岭隧洞是引大入秦灌溉工程总干渠上最长的无压引水隧洞。
The Pandaoling tunnel is the longest non-pressure diversion tunnel of the main channel from Datong river to water irrigation project at Qinwangchuan region.
普通城门洞形过水断面是泄洪隧洞和灌溉引水隧洞较常采用的断面形式之一，其水力计算中的正常水深求解无显函数形式的表达公式。
The arched section is one of the usually adoptive section shapes in flood discharge tunnels and irrigation tunnels, but the analytic expression of normal water depth for this section is not explicit.
根据传统隧道式灌溉经验，设计了旱地小麦隧洞渗(洇)灌技术。
Based on traditional experience, tunnel permeating irrigation for dryland wheat has been designed.
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