掘进工作面前方煤层底板高程动态预测的试验研究  

Experimental study on dynamic prediction of coal seam floor elevation in heading face

作　　者：刘文明 程建远 刘再斌 张泽宇 LIU Wenming;CHENG Jianyuan;LIU Zaibin;ZHANG Zeyu(Xi'an Research Institute Co.Ltd.,China Coal Technology and Engineering Group Corp.,Xi'an 710077,China;Xinyuan Coal Co.Ltd.,Jinzhong 045400,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077 [2]山西新元煤炭有限责任公司,山西晋中045400

出　　处：《煤田地质与勘探》2021年第1期257-262,共6页Coal Geology & Exploration

基　　金：天地科技股份有限公司科技创新创业资金专项重点项目(2019-TD-ZD003);国家重点研发计划项目(2017YFC0804100);天地科技股份有限公司科技创新创业资金专项项目(2018-TD-MS072)。

摘　　要：快速掘进急需构建掘进前方高精度二维地质模型。以沁水煤田某矿区XY-S工作面为例,基于三维地震解释成果,利用巷道掘进过程中煤层底板高程实测信息,动态刷新三维地震平均速度场,更新掘进前方煤层底板高程,最后对掘进前方预测的精度进行统计分析。结果表明:通过不断利用掘进实测煤层底板高程,刷新平均速度场,更新掘进前方煤层底板地质剖面,掘进前方煤层底板剖面与实际揭露剖面之间误差逐渐越小,实测点前方25 m和50 m范围的煤层底板高程最小绝对误差可达0.2 m和0.45 m。若实测点数据密度大、分布均匀,预测精度将会进一步得到提高,可为快速掘进提供高精度煤层底板导航数据。Speedy drivage urgently needs to build a high-precision two-dimensional geological model.Taking the XY-S working face of Qinshui coalfield as an example,based on the results of 3D seismic interpretation,the coal seam floor elevation measured during excavation is used to update in succession the 3D seismic average velocity field and the coal seam floor elevation ahead,thus the prediction accuracy ahead of heading is analyzed statistically.The results show that the error between the predicted coal seam floor profile and the actual exposed profile decreases gradually by constantly making use of the measured coal seam floor elevation,upgrading the average velocity field and mapping the geological section in front of the drivage.The minimum absolute error of floor elevation in the range of 25 m and 50 m ahead of the measured point is as small as 0.2 m and 0.45 m respectively.The prediction accuracy will be further improved if the measured points data become larger in density and evenly distributed,and it can provide high-precision coal seam floor navigation data for speedy drivage.

关 键 词：掘进工作面 平均速度场 逐级透明化 二维地质模型 

分 类 号：TD163[矿业工程—矿山地质测量] P631[天文地球—地质矿产勘探]