采用这种方法解决了更换底圈壁板必然涉及的壁板、底板(弓形边缘板、中幅板)变形问题，保证了工程质量。
By the treatment method it solves problem on deformation of wall and bottom plate relative to bow - shape edge plate and ensures engineering quality.
巷道与上部煤柱边缘之间的水平距离X，是底板岩巷和邻近煤层巷道布置的重要参数。
The horizontal distance X between roadway and the edge of its upper pillar is an important parameter for roadway layout in floor strata and adjacent coal seams.
大型储罐底板的边缘板在油罐腐蚀事故中占很大比例，有关储罐边缘板的防护问题是储罐防护的重要组成部分。
The bottom plate and annular plates of large storage tanks are more subject to corrosion. Therefore, their corrosion protection is very important in the overall corrosion protection of tanks.
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