问题 问答题 简答题

简述井下爆破时装药的有关规定。

答案

参考答案:

1.炮眼内存有煤岩粉,使眼内药卷不能紧贴在一起,或者装不到眼底,引起火灾或爆炸事故。所以,装药前必须将炮眼内煤岩粉清除。

2.装药时不能用炮棍冲撞或捣实药卷,以避免产生炸药密度过大、爆炸反应不完全、产生拒爆,甚至捣响电雷管等不良现象,必须用炮棍轻轻推入。

3.潮湿和有水的炮眼应使用抗水型炸药。有的使用非抗水型炸药时,外罩防水套,但一方面防水套容易划破,起不到防水作用,另一方面防水套参与爆炸,增加一氧化碳含量。

4.装药后电雷管脚线要各自独立悬穿,或卷好塞在各自的眼口附近,以免电雷管脚线接头接地短路。

5.严禁电雷管脚线、爆破母线与运输设备、电气设备以及采掘机械等导体相接触。

填空题

阅读理解填词。先阅读短文,然后在短文后1-10小题空白处写出各单词的正确形式,单词的第一个字母

已给出。

    Last spring I was walking in a park. In front of me there was a mum and her 3-year-old daughter. The little

girl was holding a string (线), which had a balloon at the other e    1   

    All of a sudden, a l    2      wind took the balloon from the little girl. I thought she would cry.

    But, no! As the little girl turned to watch her balloon rise to the s    3    , she cheerfully shouted out, "Wow!"

    That little girl t    4     me something. Later that day, I received a phone call from my friend, he told me an

unexpected problem. I felt annoyed r   5     with "Oh no, what should we do?" But remembering that little girl, I

found m    6     saying: "Wow, that is interesting! How can I help you?" 

    One thing is for sure-life is always going to make us f   7     unexpected problems. However, how to deal

with them is our choice. We can choose to be annoyed or i   8    .

    No matter what the situation is, a "Wow!" will always b    9     "Oh, no."

    So the next time you meet one of life's unexpected g   10    , remember that little girl and make it a "Wow!"

experience. The "Wow!" always works.

1.                    2.                    3.                   4.                  5.                

6.                    7.                    8.                   9.                  10.               

选择题