【单选题】
最前面的一个中、腰线点至掘进工作面的距离,一般应不超过___。
A. 30-40m
B. 40-50m
C. 50-60m
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相关试题
【单选题】
巷道每掘进___,应至少对中、腰线点进行一次检查测量,并根据检查测量结果调整中、腰线。
【单选题】
3°带第37带的中央子午线经度为___。
【单选题】
转动目镜对光螺旋的目的是___。
A. 看清近处目标
B. 看清近处目标
C. 看清十字丝
【单选题】
导线的水平角是由经纬仪采用___观测的。
【单选题】
提高贯通测量精度最主要的是提高___。
A. 测边精度
B. 测角精度
C. 仪器精度
D. 对中精度
【单选题】
在水准测量时,若水准尺倾斜时,其读数值___。
A. 水准尺前倾读数增大,后倾减小
B. 水准尺前倾读数减小,后倾增大
C. 总是增大
D. 总是减少
【单选题】
在井下延伸导线时,规程要求主要检测___。
A. 距离
B. 水平角
C. 垂直角
D. 高差
【单选题】
新开口的巷道掘进___时应检查或重新标定中腰线。
A. 1-2m
B. 5-10m
C. 10-15m
D. 4-8m
【单选题】
贯通巷道接合处的重要方向上偏差是指___。
A. 在平面上沿巷道中线的长度偏差
B. 水平面上垂直于中线方向的左右偏差
C. 竖直面上的偏差
D. 综合偏差
【单选题】
在布设井下基本控制导线时,一般每隔___应加测陀螺定向边。
A. 1.0-1.5km
B. 1.5-2.0km
C. 2.0-2.5km
D. 2.5-3.0km
【单选题】
在延长井下导线之前,必须对上次所测量的最后一个水平角进行检查,7秒导线两次观测水平角的不符值不得超过___秒。
A. 15秒
B. 40秒
C. 20秒
D. 80秒
【单选题】
近井点的精度,对于测设它的起算点来说,其点位中误差不得超过___。
A. ±3cm
B. ±5cm
C. ±10cm
D. ±7cm
【单选题】
测量竖直角时,采用盘左、盘右观测,其目的之一是可以消除___误差的影响。
A. 对中
B. 视准轴不垂直于横轴
C. 指标差
D. 竖盘刻划不均匀
【单选题】
相邻两条等高线之间的高差称为___。
A. 等高距
B. 等高线平距
C. 等高线坡度
D. 等高线落差
【单选题】
井下控制导线的首级控制为___导线。
A. 8〞级
B. 15〞级
C. 30〞级
D. 7〞级
【单选题】
开拓系统比较简单,且分层采掘工程平面图上已包括主要巷道,可不单独绘制___。
A. 井筒断面图
B. 主要保护煤柱图
C. 主要巷道平面图
D. 井底车场平面图
【单选题】
《防范煤矿采掘接续紧张暂行办法》中水文地质极复杂矿井开拓煤量可采期不得小于___年。
【单选题】
《防范煤矿采掘接续紧张暂行办法》中水文地质极复杂矿井准备煤量可采期不得小于___个月。
【单选题】
《防范煤矿采掘接续紧张暂行办法》中2个及以上采煤工作面同时生产的矿井回采煤量可采期不得小于___个月。
【单选题】
导线的布置形式有___。
A. 一级导线、二级导线﹑图根导线
B. 单向导线﹑往返导线﹑多边形导线
C. 闭合导线﹑附合导线﹑支导线
D. 测边导线、测角导线、边角导线
【单选题】
下列选项中不属于三下采煤的是___。
A. 建筑物下
B. 构筑物下
C. 水体下
D. 铁路下
【单选题】
在实际工作中,一般采用___中误差作为允许误差。
【单选题】
开口通知单应提前___下达到测量部门。
【单选题】
测量误差按其性质可分为系统误差和___。
A. 人为误差
B. 仪器误差
C. 计算误差
D. 偶然误差
【单选题】
根据煤矿地质工作规定当巷道不能揭露煤层全厚时,较稳定煤层探测煤层全厚的观测点间距为___m。
A. 10-25
B. 20-35
C. 25-50
D. 35-50
【单选题】
测量工作的主要任务是确定地面点的___位置。
【单选题】
平静的海水面伸过大陆与岛屿形成一个封闭的曲面,称为___。
A. 大地水准面
B. 水准面
C. 基准面
D. 海水面
【单选题】
中华人民共和国大地坐标原点设在___省。
【单选题】
我国的高程基准面是以___平均海水面作为大地水准面。
【单选题】
通过地面一点,指向地球北极的方向称为该点的___。
A. 坐标纵轴方向
B. 磁子午线方向
C. 真子午线方向
D. 陀螺北方向
【单选题】
从标准方向的北端起,顺时针量至某一直线的夹角,称为该直线的___。
A. 方位角
B. 真方位角
C. 坐标方位角
D. 水平角
【单选题】
当测站上需要观测三个方向时,通常采用___观测水平角。
A. 测回法
B. 方向观测法
C. 复测法
D. 全圆观测法
【单选题】
矿山测量规程规定,等外水准测量环线式附和线路长度不超过___公里。
【单选题】
对某量进行了多次观测,其观测值与真值之间存在一个差数,这个差数叫___。
A. 偶然误差
B. 系统误差
C. 中误差
D. 真误差
【单选题】
下列误差属于系统误差的是___。
A. 对中误差
B. 读数误差
C. 钢尺检定误差
D. 照准误差
【单选题】
主要探水孔位置,应由___进行标定。
A. 测量人员
B. 地质人员
C. 技术员
D. 探水队长
【单选题】
根据不同水文地质条件,采取探、防、堵、疏、排、截、___等综合防治措施
【单选题】
煤矿主要负责人必须赋予调度员、安检员、___、班组长等相关人员紧急撤人的权力,发现突水(透水、溃水)征兆、极端天气可能导致淹井等重大险情,立即撤出所有受水患威胁地点的人员,在原因未查清、隐患未排除之前,不得进行任何采掘活动。
【单选题】
当矿井水文地质条件尚未查清时,应当进行水文地质补充勘探工作。在水害隐患情况未查明或者未消除之前,___活动。
A. 严禁进行
B. 可以进行
C. 可以适当进行
【单选题】
矿井水文地质类型划分按分类依据___的原则,确定矿井水文地质类型
A. 就低不就高
B. 就高不就低
C. 综合考虑
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