对影响男子撑竿跳高成绩的运动技术参数分析

本文运用灰色关联的分析方法，对影响男子撑竿跳高成绩的运动技术参数进行分析，并针对我国运动员的实际情况，进行了对比研究。

梁思光800米跑运动生物力学分析

梁思光是我省男子800米跑优秀运动员,在全国比赛中夺取过冠军。本课题用高速摄影解析技术获取运动技术参数。用分析对比等方法研究梁的跑动动作,进行技术诊断,为今后训练和选材提供参考意见。

Technical parameters of drawing and coal-gangue field movements of a fully mechanized large mining height top coal caving working face

Under fully mechanized, large mining height top coal caving conditions, the shield beam slope angle of the support increases due to the enlargement of the top coal breaking and caving space. This results in a change of the caving window location and dimensions and, therefore, the granular coal-gangue movement and flows provide new characteristics during top coal caving. The main inferences we draw are as follows. Firstly, after shifting the supports, the caved top coal layer line and the coal gangue boundary line become steeper and are clearly larger than those under common mining heights. Secondly, during the top coal caving procedure, the speed of the coal-gangue flow increases and at the same drawing interval, the distance between the coal-gangue boundary line and the top beam end is reduced. Thirdly, affected by the drawing ratio, the slope angle of the shield beam and the dimensions of the caving window, it is easy to mix the gangue. A rational drawing interval will cause the coal-gangue boundary line to be slightly behind the down tail boom lower boundary. This rational drawing interval under conditions of large mining heights has been analyzed and determined.

孙老师讲课——人工合成材料面层运动场地建设常识⒁

工程监理和检测2 二、塑胶面层的检测 人工合成材料面层跑道的检测应由国家体育总局和中国田径协会确认的、具有专门检测手段的单位担任。 这里需要说明的是,塑胶面层施工目前还没有监理单位,只有检测单位。它可以进行塑胶面层的送样、现场取样及施工全程跟踪检测等不同形式的技术服务,业主单位可根据需要确定采取其中一种检测形式对塑胶面层的质量进行监控。