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九龙口矿副井井筒采用掘、砌同向短段平行作业的施工方式,该施工方式需要在吊盘上立模砌壁,所以,通常的考虑方法是认为吊盘要承受一个砌壁段高的井壁重量。而砌壁时由于混凝土的凝固,井壁与围岩发生一定的粘结力及摩擦力,故吊盘实际承受的载荷小于一个砌壁段高混凝土重量。为了确定早凝混凝土的粘结力及摩擦力,为吊盘及悬吊载荷的设计提供依据,我们做了模型试验。
The auxiliary wellbore of Jiulongkou Mine adopts the construction method of digging and building the parallel work with the same direction and the short segment. The construction method needs to form the wall of the mold on the hanging plate. Therefore, the usual consideration is to consider the hanging plate to bear a high wall section The wall weight. However, due to the solidification of the concrete wall, the wall and the surrounding rock have a certain amount of adhesion and friction, so the actual load of the hanging plate is less than the weight of a high wall concrete wall. In order to determine the adhesion and friction force of early-setting concrete, we provide a model test for the design of the suspension and suspension load.