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3 000 m障碍等起跑线在直道上的不分道跑项目,其起跑线不应是一条“等半径的弧线”,现在普遍采用的“等半径划线法”使得处在同一起跑线上不同位置的运动员,在赛跑距离方面存在着明显的误差。误差的存在不仅影响了公平竞争的《田径竞赛规则》精神,而且与现代化的高科技手段在田径竞赛中的运用也不相适应。思考田径运动的文化属性和更高层次的公平竞争精神,应当采用新的无误差划线法。在简述了“等半径划线法”存在着误差并且提供了误差值的基础上,通过推理和计算提出了3种正确的划线方法:即“渐展切线延长线”划线法;“切线延长线量点法”;“坐标定点法”。以期改正现在普遍采用的“等半径划线法”,推广普及新的划线法,消除此类项目由于起跑线划线方法的错误,而导致运动员间赛跑距离的误差。
3 000 m obstacles and other start-up line in the straight runner project, the starting line should not be a “radius of the arc,” now commonly used “equal-radius underline method” makes the same starting line in different locations Athletes, there is a clear error in the race distance. The existence of error not only affects the spirit of “track and field competition rules” of fair competition, but also does not correspond to the application of modern high-tech means in track and field competitions. Think about the cultural attributes of track and field and a higher level of fair competition, should be the use of new error-free line method. On the basis of a brief account of the existence of the error of the “Equal Radial Scoring Method” and providing the error values, three correct scribing methods are proposed by reasoning and calculation: the “extension line of ascending tangent” Tangent extension line point method “;” coordinate fixed point method. “ In order to correct the commonly used method of ”equal radius marking", popularize and popularize the new marking method and eliminate the error of the running distance between athletes due to the error of the marking method of starting line.