Through the experiment, getted the installation position and structural parameters of the vision sensors which ensure to get the exact parameters of the image in the seam extraction.
通过实验，确定了多视觉传感器的安装位置和结构参数，以保证图像中焊缝参数的精确提取。
The arithmetic realized the feature extraction of the weld seam Image.
并最终实现了对焊缝图像的特征提取。
There are series problems exist in the existing thick seam mining technology with large dip Angle, thus cause low extraction rate, poor safety and high cost.
现有的大倾角厚煤层开采技术存在着一系列问题，从而导致煤矿回采率低，安全性差，成本高。
And it derives the united calculation formula of space-time process of ground movement due to the extraction of an inclined seam.
从理论上导出了开采倾斜煤层地表移动空间——时间过程的统一计算公式。
As the soft coal seam is high gas content and low permeability. it has been difficult and key for the coal seam gas extraction.
由于松软煤层的瓦斯含气量高而透气性又极差，一直是本煤层瓦斯抽采的难点和重点。
The stability of seam roof is one of the most important factors that influences the safety of coal extraction.
煤层顶板的稳定性是影响煤层回采工作安全最重要因素之一。
The stability of seam roof is one of the most important case that influences the safety of coal extraction.
煤层顶板的稳定性是影响煤层回采工作安全最重要因素之一。
"Pressure relief antireflective" technology is to improve the soft low-permeability coal seam gas extraction rate in an effective way.
“卸压增透”技术是提高松软低透气性煤层瓦斯抽采率的有效途径。
"Pressure relief antireflective" technology is to improve the soft low-permeability coal seam gas extraction rate in an effective way.
“卸压增透”技术是提高松软低透气性煤层瓦斯抽采率的有效途径。
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