工作面贯通设计及误差预计.doc

0403工作面贯通设计及误差预计摘要:本文介绍正明煤业公司0403工作面运输巷相向掘进大型贯通测量的设计及贯通误差的预计。关键词:贯通测量 误差预计 闭合差（一）0403工作面工程概况井矿正明煤业0403综采工作面位于井田东部，北部为井田边界临近新建主、副、风井，南部为井田边界，东部为0401及0402回采工作面，西部为实煤区。4#煤属于山西组，半亮煤型，煤层结构稳定，含有一层夹矸，平均厚度1.6m，煤层倾角814，煤层最低着火温度为590，不易自燃。该面水文地质相对简单，在顶板裂隙发育区域会出现淋水、滴水，对生产影响不大，预计该工作面在掘进期间正常涌水量为1.0m/h，最大涌水量为5m/h。0403工作面由运输巷、材料巷及切眼构成完整的生产系统，运输巷负责进风、运输，材料巷负责回风、运料。运输巷、材料巷沿煤层走向布置，切眼沿倾向布置，与运输、材料巷垂直。0403工作面设计参数如下：0403材料巷（综掘一队工作面）长度1710米，开口坐标为：X=4101614.4，Y=19708210.0，净断面为9.6，巷宽4米，施工方位为2023455。0403运输巷（综掘二队工作面）长度1610米，开口坐标为：X=4101732.6，Y=19708085.9，断面为10.1，巷宽4.2米，施工方位为2023455。0403切割巷长度150米，开口坐标为：X=4100194.6，Y=19707605.6、X=4100252.3，Y=19707471.4，断面为12.7，巷宽5.3米，施工方位为1123455或2923455。该工作面掘进长度为3470米，两综掘工作面均沿煤层掘进，巷道坡度忽略不计，一次成巷，为保证工作面按时、按质、准确贯通，按煤矿测量规程规定，贯通精度应为：中线误差小于0.5米、腰线误差不计。（二）测量方案的选择贯通测量方案使用经纬仪导线测量，高程采用三角高程测量。本项工程为一井田内的大型贯通测量工程，贯通导线全长约3650米，由辅助运输巷测点S1、S2、S3作为起始点，S1- S2- S3角作为检查角，分别对0403材料巷、0403运输巷、切割巷依据设计参数，按7级导线进行联系测量，巷贯通后导线自成闭合，进行联测后，本次贯通测量工作结束。尼康2.C测角中误差计算表序号巷道名称角度个数n角度闭合差 fffffnm的计算10817工作面61-52270444.3m=ff/n =190.6/4 =6.920818工作面66-887744117.330819工作面82+245767.040802工作面96-46211622.0290190.61、水平角观测方法及限差要求采用尼康2.C防爆全站仪，用测回法测水平角，当边长大于30m采用一次对中两个测回，当小于30m时两次对中两个测回，边长一般布为60-100m。点下对中时，在前视和后视两个方向上观察垂球尖是否对准望远镜的镜中心，以保证对中精度，测觇、前视觇标对中应采取挡风措施，按有关测量规程实施操作。测角限差要求：仪器型号同一测回中半测回互差两测回间互差两次对中测回（复测）间互差尼康2.C201230 注意事项：在每次测量标定时，必须对上一次标定角进行检核，必要时边长也要检查，避免用错点号，以及顶板导线点位移。架设仪器时要注意水准气泡的变化，偏离值不超过规定要求，以确保观测精度。2、边长测量及限差要求在整个巷道施工过程中，均采用全站仪进行边长测量，测量边长时应输入气压、温度改正值，每条边长的测量次数不少于3次，按照本仪器的特点，测回间测距误差不大于3mm，仪器记录数据为：斜距S、平距H、高差V, 且满足S2=H2+V2，原始记录同仪器记录一致。3、高程测量在掘进工作面测量过程中，均采用三角高程测量，由于采用全站仪进行观测，只丈量测站、前视觇标高，丈量次数2次，结果互差不大于3mm，两点间的高差由仪器自动完成，屏显值为平均值，记录时应注意高差的正负值。4、日常中腰线标定、导线测量0403材料巷、0403运输巷均采用激光指向仪标定中线，由于跟煤掘进，无须标定腰线。两综掘工作面的激光指向仪的射程为300m,故标定的定向线间的点间距不得小于20米为宜，每4条中线点为一组，确保激光光束的指向精度。当导线点间距在150m左右时，进行导线跟踪测量，按煤矿测量规程要求完成水平角、边长、定向等测量任务，并实事求是地作好记录工作，井下导线点注记要清楚（用喷漆作标记并挂牌），便于查找。（三）贯通测量误差预计由于本次贯通在煤层中进行，根据贯通测量的有关规定，这一工程只作水平方向上的误差预计。假定0403材料巷贯通点K为坐标原点，垂直于0403材料巷为X轴，平行0403材料巷为Y轴。1、误差参数的确定：（1）全站仪测角中误差：井下测角中误差m=7（2）全站仪测边中误差：mL=15mm/km2、贯通相遇点的误差（1）由测角误差引起K点在X、Y轴上的误差：Rx、Ry直接从图上量取（见附图），导线R2x、R2y计算表：点号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713952R2y=85227199由导线测角误差引起K点在x、y轴上的偏差：M x =m/（R2 y）1/2=7/206265（85227199）1/2 =0.313m M y =m/（R2 x）1/2=7/206265（713952）1/2 =0.029m因导线独立施测两次，故： M x=0.313/(2) 1/2=0.221mM y=0.029/(2) 1/2=0.020m（2）由量边误差引起K点在x、y轴上的偏差：导线Lcos2、Lsin2计算表：边名L()x()()SinCosS1-S233.71487.0147112.345525.33080.1860.814S2-S337.79986.5011112.345525.44440.1890.811S3-S446.46286.4958112.345525.44570.1890.811S4-S748.45586.5617112.345525.38380.1870.813S7-S823.52086.5646112.345525.38090.1870.813S8-X117.27222.2702112.345590.07531.0000.000X1-X219.48024.2049112.345588.14060.9990.001X2-X327.21322.3454112.345590.00011.0000.000X3-X432.21422.3356112.345590.00591.0000.000X4-X537.24722.3324112.345590.01311.0000.000X5-X632.70622.3418112.345590.00371.0000.000X6-X714.61022.3625112.345589.58301.0000.000X7-X823.04522.3501112.345589.59541.0000.000X8-X950.24522.3400112.345590.00551.0000.000X9-X1055.26522.3438112.345590.00171.0000.000X10-X1138.98622.3439112.345590.00161.0000.000X11-X1265.40622.3458112.345589.59571.0000.000X12-X1354.34222.3518112.345589.59371.0000.000X13-X1434.79422.3501112.345589.59541.0000.000X14-X1512.30022.3528112.345589.59271.0000.000X15-X1654.53622.3540112.345589.59151.0000.000X16-X1739.98022.3329112.345590.01261.0000.000X17-X1856.76022.3502112.345589.59531.0000.000X18-X1920.87321.1032112.345591.24230.9990.001X19-X2027.01822.3439112.345590.00161.0000.000X20-X2110022.3338112.345590.01171.0000.000X21-X2210022.3455112.3455901.0000.000X22-X2310022.3455112.3455901.0000.000X23-X2410022.3455112.3455901.0000.000X24-X2510022.3455112.3455901.0000.000X25-X2610022.3455112.3455901.0000.000X26-X2710022.3455112.3455901.0000.000X27-X2810022.3455112.3455901.0000.000X28-X2988.60922.3455112.3455901.0000.000X29-Q1100112.3455112.3455001Q1-K49.6112.3455112.3455001S1-4CS425.74627.0255112.345585.32000.9940.0064CS4-4CS564.80126.5946112.345585.35090.9940.0064CS5-4CS617.10024.3341112.345588.01140.9990.0014CS6-S034.67825.0228112.345587.32270.9980.002S0-S250.06873.1624112.345539.18310.4010.599S2-S314.17022.3540112.345589.59151.0000.000S3-S429.97922.3453112.345590.00021.0000.000S4-S532.67322.3614112.345589.58411.0000.000S5-S644.07322.2803112.345590.06521.0000.000S6-S720.89222.3415112.345590.00401.0000.000S7-S854.43822.3429112.345590.00261.0000.000S8-S975.54822.3516112.345589.59391.0000.000S9-S1036.64022.3603112.345589.58521.0000.000S10-S1143.44822.4329112.345589.51261.0000.000S11-S1240.40022.3529112.345589.59261.0000.000S12-S1310022.2700112.345590.07551.0000.000S13-S1410022.3455112.3455901.0000.000S14-S15106.65322.4937112.345589.45181.0000.000S15-S1636.401335.5751112.3455136.37040.4720.528S16-S1710022.3455112.3455901.0000.000S17-S1810022.3455112.3455901.0000.000S18-S1910022.3455112.3455901.0000.000S19-S2010022.3455112.3455901.0000.000S20-S2110022.3455112.3455901.0000.000S21-S2210022.3455112.3455901.0000.000S22-S2310022.3455112.3455901.0000.000S23-K87.56322.3455112.3455901.0000.000 边名LcosLsin边名LcosLsinS1-S2276S2-S3317S3-S4389S1-4CS4026S4-S73994CS4-4CS5064S7-S81944CS5-4CS6017S8-X10174CS6-S0035X1-X2019S0-S23020X2-X3027S2-S3014X3-X4032S3-S4030X4-X5037S4-S5033X5-X6033S5-S6044X6-X7015S6-S7021X7-X8023S7-S8054X8-X9050S8-S9076X9-X10055S9-S10037X10-X11039S10-S11043X11-X12065S11-S12040X12-X13054S12-S130100X13-X14035S13-S140100X14-X15012S14-S150107X15-X16054S15-S161917X16-X17040S16-S170100X17-X18057S17-S180100X18-X19021S18-S190100X19-X20027S19-S200100X20-X210100S20-S210100X21-X220100S21-S220100X22-X230100S22-S230100X23-X240100S23-K088X24-X250100X25-X260100X26-X270100X27-X280100X28-X29089