20春学期《爆破工程Ⅰ》在线平时作业1

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<div>为了预防煤矿井下爆破引起煤尘爆炸，目前采取的措施可分为降尘、（）和阻止爆炸三类</div>
A:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">煤层注水</span>
B:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">装设岩粉棚 </span>
C:爆破后喷雾<span>&nbsp;</span>
D:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">防止引燃 </span>

<div>&nbsp;井下爆破装药前必须清除炮眼内的煤粉或岩粉，再用木质或竹质炮棍将药卷轻轻推入，不得冲撞或捣实。炮眼内的各药卷必须彼此（）。</div>
A:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">有<span lang="EN-US">5</span>厘米以上间距</span>
B:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">有<span lang="EN-US">5</span>厘米以下间距 </span>
C:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">用封泥隔开</span>
D:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">密接</span>

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在高瓦斯矿井爆破时，都应采用（ ）。</span>
A:反向起爆<span>&nbsp;</span>
B:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">正向起爆 </span>
C:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">无填塞炮泥 </span>
D:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">非电导爆管起爆</span>

<div>井下爆破装药时，每个炮孔同时操作人员不应超过（<span>&nbsp;），严禁向炮孔内投掷起爆体和受冲击易爆的炸药。</span></div>
A:&nbsp;1人
B:2人
C:3人
D:4人

电雷管必须（<span>&nbsp;）装入，严禁用电雷管代替竹、木棍扎眼。电雷管必须全部插入药卷内。</span>
A:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">从药卷的顶部 </span>
B:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">斜插在药卷的中部 </span>
C:斜插在药卷的下部&nbsp;<span><span>&nbsp;&nbsp;&nbsp;&nbsp;</span></span>
D:<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">捆在药卷上</span>

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">从成束的电雷管中抽取单个电雷管时，可以手拉脚线硬拽管体，也可以手拉管体硬拽脚线。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">毫秒爆破不能改善岩石破碎质量，爆破效果较差，不能减少在围岩内产生的振动。</span>
A:错误
B:正确

&nbsp;外来电流是引发电起爆网路早爆的主要因素。
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">炸药爆炸的爆温和爆热愈大，引燃瓦斯的可能性也愈大。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">当空气中甲烷浓度为<span lang="EN-US">9.5</span>％和含氧量为<span lang="EN-US">19</span>％时，正是瓦斯完全燃烧所需要的氧量，在该种条件下瓦斯极易引爆，而且爆炸威力最大。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">在装药过程中，可以拔出或硬拉起爆药包中的导爆索和电雷管脚线。</span>
A:错误
B:正确

&nbsp;煤矿井下爆破网路接线前要切断工作面<span>(作业现场)电源，改用矿灯或电压不高于36V的照明器材。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">若爆炸产物内含有剩余的氧、氮氧化物、过氧化物和一氧化碳等成分时，还会降低瓦斯发火下限，并加速瓦斯的氧化反应，使发火的可能性增大。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">煤的可燃挥发分含量越高，煤尘越容易发生爆炸，爆炸威力也越大。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">当瓦斯与空气的混合气体被爆破产生的冲击波压缩时，会引起压力和温度急剧下降。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">《煤矿安全规程》规定，在特殊情况下，如挖底、刷帮、挑顶需浅眼爆破时，必须制定安全技术措施，炮眼深度可小于<st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".6" unitname="m"><span lang="EN-US">0.6m</span></st1:chmetcnv>，但必须封满炮泥。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">当采掘工作面风流中瓦斯浓度达到<span lang="EN-US">l</span>％时，应停止用煤电钻打眼。</span>
A:错误
B:正确

&nbsp;当煤矿井下两巷道贯通前，在相距<span>20m时，地质测量人员要下达贯通通知书。必须停止一个工作面的作业，只准从一个工作面向前掘进，停止作业的掘进工作面可以停止通风。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">每当爆区附近出现雷电时，地面或地下爆破作业均应停止，一切人员必须撤到安全地点。</span>
A:错误
B:正确

<span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">井下采煤爆破可以对炮孔不堵塞。</span>
A:错误
B:正确