《矿山井巷工程施工及验收规范》关于井巷施工中的温湿度要求,井巷工程施工时工作面的相对湿度为90%时,空气的温度不得超过2...
Thursday, September 22, 2022
Wednesday, September 21, 2022
《爆炸物品使用许可证》应当向所在地县、市( )申请领取。...
Thursday, September 15, 2022
Thursday, September 22, 2022
Saturday, September 17, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
将导火索在深()m的常温水中浸泡()h后,如果导火索的燃速和喷火强度不变,就证明导爆索的耐水性能合格...
Wednesday, September 21, 2022
矿山工程中,当工程地质条件复杂时,正确的安全工作做法是( )。...
Thursday, September 22, 2022
多选题11、矿井施工项目中应布置在工业广场边缘的临时设施有( )A临时炸药库B临时油脂库C临时锅炉房D矸石场E混凝土搅拌站...
Saturday, October 8, 2022
Wednesday, February 22, 2023
Saturday, September 17, 2022
Friday, September 16, 2022
单选题岩巷中,未冒落的上部岩石往往形成有一个冒落拱,只要确定(),就可以计算冒落作用在支护上的荷载大小A 冒落拱的半径B 冒落拱的长度C 冒落拱的宽度D 冒落拱的形状...
Friday, March 31, 2023
Thursday, September 22, 2022
平硐进硐施工遇到风化层时,一般应首先采用( )支护形式。...
Sunday, September 18, 2022
水泥浆是纯粹由水泥和水调制成的浆液,其可注对象的渗透系数为(),适用于裂隙岩石或粗粒砂注浆、壁后充填加固。...
Thursday, September 22, 2022
地基换填好的灰土,应保证在其夯实后( )日内不得受水浸泡。...
Thursday, September 22, 2022
掘进与永久支护平行作业方式的难易程度,取决于()的类型...
Thursday, September 22, 2022
井筒到底后,为满足快速安全施工的要求,井底车场可能需要增加的临时工程有( )。...
Wednesday, September 21, 2022