问题:平硐开拓法按照平硐与矿体的相对位置关系可分为();();()。...
Sunday, September 18, 2022
问题:单选题金属矿床地下开采的步骤是()A 凿岩、爆破、通风、出矿;B 矿床开拓、采准与切割、回采;C 落矿、采场运搬、阶段运输和矿井提升;D 矿床开拓、落矿与通风...
Saturday, January 27, 2024
Tuesday, November 28, 2023
问题:填空题影响采煤方法选择的因素主要有:();();()和矿井经济效益。...
Sunday, October 22, 2023
问题:填空题综采设备的拆除顺序,一般先拆()和(),继之拆除采煤机和输送机机槽,最后拆除液压支架。...
Wednesday, August 2, 2023
问题:采煤工作面循环作业图表主要包括:();();()和工作面布置图。...
Thursday, September 22, 2022
Wednesday, January 25, 2023
Friday, March 29, 2024
问题:矿块采准包括()和()等巷道工程,采准工程量的大小一般常用采准系数和采准工作比重两项工作指标衡量。...
Wednesday, September 14, 2022
Saturday, September 17, 2022
Sunday, September 18, 2022
Thursday, September 22, 2022
Saturday, January 27, 2024
Saturday, September 17, 2022
Friday, February 16, 2024
Saturday, September 9, 2023
问题:填空题按斜井和矿体的相对位置,斜井开拓法可分为();()。...
Friday, March 29, 2024
Friday, March 29, 2024
Tuesday, April 9, 2024
Saturday, April 8, 2023