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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><strong><span>隧道收敛�?/span></strong><span>概述</span>:</span></p><p><span><strong>数显隧道收敛�?/strong>（简称收敛计）是新一代电子数字显示收敛计。它适用于量测隧道、巷道、峒室及其它工程围岩周边及支护的变形发展规律，确定合理支护参数的目的。收敛量测已公认是地下工程量测项目中必须项目之一、�/span></p><p><strong><span>隧道收敛�?/span></strong><span>技术指标：</span></p><p><span>测量范围９�/span>10m�?5m�?0m�?0m（四款）</span></p><p><span>数显示值：</span>0.5�?0m�?.5�?5m�?.5�?0m�?.5m�?0m</span></p><p><span>测量精度９�/span>0.1mm</span></p><p><span>分辨率：</span>0.01mm</span></p><p><span>数显示值稳定度９�/span>24h内不大于0.01mm</span></p><p><span>电源９�/span>1.55V氧化银钮扣电池SR44W1芁�/span></p><p><span>外形尺寸９�/span>410mm��100mm��35mm</span></p><p><span>重量９�/span>0.9kg</span></p><p><strong><span><strong>数显隧道收敛�?/strong></span></strong><span>特点９�/span></p><p><span>结构新颖、操作简便、测量精度高、体积小、重量收敛仪适用于量测隧遒�/span>，巷道，峒室及其它工程围岩周边任意方向两点间的距离微小变化，达到评定工程稳定性，研究工程围岩及支护的变形发展规律，确定合理支护参数的目的、�/span></p><p><strong><span><strong>数显隧道收敛�?/strong></span></strong><span>使用方法９�/span></p><p><span>1、悬挂仪器及调整钢尺张力</span></p><p><span>测量前先估计两测点的大致距离，将钢尺固定在所需长度上（拉出钢尺将定位孔固定在定位销内），将螺旋千分尺旋�?*读数位置上（</span>25mm），将仪器两轴孔分别挂于事先埋设好的圆柱测点上，一只手托住仪器另一只手旋进螺旋千分尺，直致内导杆上的刻度线与向套上的刻度线重合时，即可读数、�/span></p><p><span>2、读�?/span></p><p><span>定位销处的钢尺读数称为长度首数，螺旋千分尺读数为尾数、�/span></p><p><span>测距</span>=首数+尾数</span></p><p><span>一般应重复操作三次读取三组数值，进行加权平均计算确定测量值，以减小测量时的视觉误差、�/span></p><p><span>3、收敛值及收敛速度的计箖�/span></p><p><span>收敛值为两测点在某一时间内的距离的变化量。设</span>T1时的观测值为L1，T2时的观测值为L2，则收敛值△L=L1-L2</span></p><p><span>收敛速度</span>△V(t)=△L/△T 其中：△T=T2-T1</span></p><p><span>4、温度校正计箖�/span></p><p><span>机械式收敛计均有温度误差，所以每次测出的读数还应加上温度修正值，卲�/span></p><p><span>实际测量倻�/span>=修正后的钢尺长度+千分尺的读数</span></p><p><span>即：</span>L‱�Ln[1－a(T0-Tn)]</span></p><p><span>式中９�/span>L′为温度修正后的钢尺实际长度</span></p><p><span>Ln----------------为第n次观测时钢尺的长度读�?/span></p><p><span>a-----------------为钢尺线膨胀系数，取a=12��10�?ℂ�/span></p><p><span>T0------------- ---�?*观测时的环境温度（℃（�/span></p><p><span>Tn----------------为第n次观测时的环境温度（ℂ�/span></p><p><strong><span><strong>数显隧道收敛�?/strong></span></strong><span>保养与维修：</span></p><p><span>1、每次测量后应将千分尺旋回零位；</span></p><p><span>2、检查各部件是否归原位后，将仪器收好装入仪器箱内妥善保管：�/span></p><p><span>3、回家后，擦除仪器表面尘土及其它污染物，仪器表面抹上机油，内导杆内加入几滴机油装箱；</span></p><p><span>4、钢尺前端折断后，可用冲头在钢尺前端冲一铆钉孔，在原来的铆钉位置上重新铆接就可继续使用、�/span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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