20春学期《工程岩体力学》在线平时作业2

adminhan

<p style="LINE-HEIGHT: 150%; TEXT-INDENT: -21pt; MARGIN-LEFT: 21pt; mso-list: l0 level1 lfo1; tab-stops: list 21.0pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">岩体的力学性质受围压影响显著，随着围压的不断增大，岩体结构面的力学效应将（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> </span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）。</span></p>
A:<font size="3" face="宋体">减小</font>
B:<font size="3" face="宋体">增加</font>
C:<font size="3" face="宋体">不改变</font>
D:<font size="3" face="宋体">不一定改变</font>

<span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">大部分岩体属于（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> </span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）。</span>
A:<font size="3" face="宋体">均质连续材料</font>
B:<font size="3" face="宋体">非均质材料</font>
C:<font size="3" face="宋体">非连续材料</font>
D:<font size="3" face="宋体">非均质、非连续、各向异性材料</font>

<p style="LINE-HEIGHT: 150%; TEXT-INDENT: -21pt; MARGIN-LEFT: 21pt; mso-list: l0 level1 lfo1; tab-stops: list 21.0pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">岩体的强度小于岩石的强度主要是由于（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> </span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）。</span></p>
A:<font size="3" face="宋体">岩体中含有大量的不连续面</font>
B:<font size="3" face="宋体">岩体中含有水</font>
C:<font size="3"><font face="宋体">岩体为非均质材料</font><span style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US"><span style="mso-spacerun: yes">&nbsp;</span></span></font>
D:<font size="3" face="宋体">岩石的弹性模量比岩体的大</font>

<p style="LINE-HEIGHT: 150%; TEXT-INDENT: -21pt; MARGIN-LEFT: 21pt; mso-list: l0 level1 lfo1; tab-stops: list 21.0pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">下面不属于结构面产状要素的是（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> ）。</span></p>
A:<span style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">&nbsp;</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">走向</span>
B:<span style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">&nbsp;</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">倾向</span>
C:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">强度</span>
D:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">倾角</span>

<span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'" lang="EN-US"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp;</span></span></span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">岩体中一点的应力状态可以由（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> </span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）个独立分量完全确定。</span>
A:<span style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">6 </span>
B:<span style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">9<span style="mso-spacerun: yes">&nbsp; </span></span>
C:<span style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">5</span>
D:<span style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">3</span>

<p style="LINE-HEIGHT: 150%; TEXT-INDENT: -21pt; MARGIN-LEFT: 21pt; mso-list: l0 level1 lfo1; tab-stops: list 21.0pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">下面不属于点荷载试验类型的是（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> </span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）。</span></p>
A:<font size="3" face="宋体">岩芯径向试验</font>
B:<font size="3" face="宋体">岩芯切向试验</font>
C:<font size="3" face="宋体">不规则块体试验</font>
D:<font size="3" face="宋体">岩芯轴向试验</font>

<p style="LINE-HEIGHT: 150%; TEXT-INDENT: -21pt; MARGIN-LEFT: 21pt; mso-list: l0 level1 lfo1; tab-stops: list 21.0pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">下列关于围岩稳定性分析叙述正确的是（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> </span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）。</span></p>
A:<font size="3"><font face="宋体">围岩应力和岩石强度本身及影响它们的因素不是确定量<span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></font></font>
B:<font size="3" face="宋体">即使某些点处应力达到强度条件，围岩也可能保持稳定</font>
C:<font size="3"><font face="宋体">围岩内一点应力达到强度条件不能代表整个围岩失稳<span style="FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></font></font>
D:<font size="3" face="宋体">以上都正确</font>

<p style="LINE-HEIGHT: 150%; TEXT-INDENT: -21pt; MARGIN-LEFT: 21pt; mso-list: l0 level1 lfo1; tab-stops: list 21.0pt" class="MsoNormal"><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">岩体强度尺寸效应是指（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> </span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）。</span></p>
A:<font size="3" face="宋体">岩体强度与试件的尺寸没有什么关系</font>
B:<font size="3"><font face="宋体">岩体强度随试件的增大而增大的现象<span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></font></font>
C:<font size="3"><font face="宋体">岩体强度随试件的增大而降低的现象<span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt" lang="EN-US"><o:p></o:p></span></font></font>
D:<font size="3" face="宋体">岩体的强度比岩石的小</font>

<span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">下列不是结构面形态要素的是（</span><span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt"> </span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）。</span>
A:<font size="3" face="宋体">闭合度</font>
B:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">贯通性</span>
C:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">结构面长度</span><span style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"> </span>
D:<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">粗糙度</span>

<span style="LINE-HEIGHT: 150%; FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'" lang="EN-US"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp; </span></span></span><span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">按简化的弹性力学模型计算的应力值不能用于（）</span>
A:<font size="3" face="宋体">给出围岩的真实应力</font>
B:<font size="3" face="宋体">估计围岩状态</font>
C:<font size="3" face="宋体">选择合理巷道断面形状</font>
D:<font size="3" face="宋体">以上都可以</font>

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">岩石各向异性程度越大，巷道周边的应力集中程度越低。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">根据不同岩石单轴抗压强度试验结果，平均强度低的岩石发生破坏的可能性肯定大</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">岩体中初始应力就是岩体自重引起的压应力。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">按简化的弹性力学模型计算的应力值，是围岩中可能出现的应力上限。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">地壳中的水平应力各个方向相等。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">爆破震动作用是短暂的、局部的，因而它对整个围岩稳定性的影响可以忽略。</span>
A:错误
B:正确

<p><font size="3">相同条件下，抗压强度高的岩石，其<em>C、&phi;</em>值和弹性模量都大。</font></p>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">人为裂隙产生后，巷道周边的应力集中程度降低。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">岩体中初始应力场的水平应力分量与水平面平行。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; 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">岩体常规三轴试验中，岩体破坏形式取决于轴向压力，而与围压无关。</span>
A:错误
B:正确