基于透反融合式激光的煤水混合物浓度测量装置

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中图分类号：TD67 文献标志码：A

Laser-based transmission-reflection fusion device for coal-water mixture concentration measurement GUO Yu1 ，YANG Chengtao¹，CHENFeng²，JIANGPeiwen²，LIBing²，MA Yancao³，XURui4， HUO Xuesong5，TIANMi5，WU Tengfeil （1.Henan EnergyGroup Research InstituteCo.，Ltd.，Zhengzhou 450046，China；2.Collge ofEnvironmentand BiologicalEngineering，Henan UniversityofEnginering，Zhengzhou451191，China；3.HenanCoking CoalEnergy Co.，Ltd.，Jiaozuo 45415o，China；4.Shanghai Institute of TechnicalPhysics，ChineseAcademy ofSciences， Shanghai 200083，China；5.Beijing Pushi Technology Co.，Ltd.，Beijing 100020，China）

Abstract： In the measurement of coal-water mixture concentration during hydraulic punching permeability enhancement operations，traditional methods—suchas thecoferdam method，sedimentation tank method，and weighing hoppermethod—suffer fromlow eficiencyand accuracy.Tuning forksensor technologyalso falls short in termsof precision and consistency，while single laser detection techniques have limited applicability.To address these isses，a laser-based transmission-reflection fusion device forcoal-water mixture concentration measurement was proposed.A laser source and a reflected-light photodetector were installed on one side of the transport pipeline，andatransmited-light photodetector was installedon the opposite side.The laser beam was directed nto the coal-water mixture through a convex lens，and the transmitted-and reflected-light photodetectors converted the received optical energy into corresponding digital signals. The digital signals were superimposed and then processd for grayscale transformation and feature region selection， which helped reduce computational complexity and eliminate interference.The corresponding grayscale values were then calculated，and the relationship between grayscale values and coal-water mixture concentrations was established through polynomial regression，thereby enabling concentration measurement.The application results showed that，for coal-water mixture concentrations ranging from 2% to 20% ，the minimum measurement error was 0.043% ，the maximum error was 0.343% ， the average error was 0.126% ，and the standard deviation was 0.116% ， meeting the accuracy requirements of hydraulic punching permeability enhancement operations.

Key words： coal-water mixture; concentration measurement; laser transmission method; laser reflection method; transmission-reflection fusion laser; polynomial regression

0引言

水力冲孔是一种简单而高效的低透气性煤层增透手段，能够促使煤层形成大量裂隙，从而提升煤层的透气性，显著提高低透气性煤层中瓦斯的抽采效率[1-3]。（剩余10188字）