巷道断面形状轮廓线属于曲线形的是：（）、（）、（）。 -题库考试答案搜索网

巷道断面形状轮廓线属于曲线形的是：（）、（）、（）。

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2022-06-29 09:00

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半圆拱形；圆弧拱形；三心拱形

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标签：井巷工程大学试题工学

感兴趣题目

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

Demand curve（or demand schedule）需求曲线（或需求表）

巷道断面设计的基本原则及巷道断面形状选择主要取决的因素。

下列井下巷道断面形状中抗压力最强的是（）。

当巷道以顶板压力为主时，稳定程度最好的巷道断面形状是（）。

降低风阻的措施有扩大巷道断面、降低巷道壁的粗糙度、改变巷道断面形状。

选择巷道支护（）应考虑巷道的用途和要求；巷道服务时间；巷道断面形状；围岩压力的大小；经济是否合理。

巷道断面形状轮廓线属于曲线形的是：（）、（）、（）。

重合断面轮廓线用（）绘出，当它与视图中的轮廓线重叠时，视图中的轮廓线是（）的。

将断面图画在视图轮廓线内的断面称为重合断面，。重合断面的轮廓线用（）画出。

画在视图轮廓线之外的断面，称为（）断面；画在视图轮廓线之内的断面，称为（）断面。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

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