【单选题】【消耗次数：1】
5、（ ）又称竖井，为直接与地面相通的直立巷道。
①
立井
②
平硐
③
斜井
参考答案：
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相关题目
【单选题】
81、采用平硐开拓时，一般以一条（ ）开拓井田，担负运煤、出研、运料、通风、排水、敷设管缆及行人等任务；而在井田上部回风水平开回风平硐或回风井(斜井或立井)。
①
立井
②
副平硐
③
主平硐
【多选题】
根据斜井井筒穿越流砂层的垂直厚度与施工技术水平，可将斜井井筒过流砂层技术方案分为（）。
①
斜井井筒过巨厚流砂层（垂直厚度h>20m）,采用地面冻结技术方案
②
斜井井筒过中厚流砂层（垂直厚度3m<h≤6m）,采用超前管棚注浆技术方案
③
斜井井筒过厚含水流砂层（垂直厚度6m<h≤20m）,釆用高喷与管棚注浆加固及地表降水技术方案
④
斜井井筒过厚无水流砂层（垂直厚度6m<h≤20m）,釆用超前管棚注浆加固技术方案
⑤
斜井井筒过薄层流砂层（垂直厚度h≤3m）,釆用超前小导管注浆技术方案
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