采场中矿石借自重经漏斗式受矿巷道放出时,下列对漏斗式受矿巷道描述不正确的是 -题库考试答案搜索网

采场中矿石借自重经漏斗式受矿巷道放出时,下列对漏斗式受矿巷道描述不正确的是

单选题

2021-07-18 18:52

A、为减少漏斗堵塞,漏斗劲和斗穿的规格可适当加大,例如可从 1.8×1.8m 2或 2×2 m2加大到 2.5×2 m2或 2.5×2.5 m2;
B、漏斗形状(有方形和圆形)对于受矿条件有着本质上的影响;
C、为利于电耙道出矿,漏斗劲与电耙道的关系,应使溜下的矿石自然堆积的斜面所占耙道宽度的 1/2~2/3;
D、当漏斗布置在电耙道两侧时, 可对称布置漏斗也可交错布置漏斗。

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正确答案

B

试题解析

B

标签：地质学专升本矿产勘查学 2020年第二学期期末考试结晶学及矿物学期末考试资源勘查工程 2019级毕业清考（考试分）

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