Foundation pit supporting device and foundation pit supporting method

The invention relates to a foundation pit supporting device and a foundation pit supporting method, and relates to the field of foundation pit supporting, the foundation pit supporting device comprises a plurality of foundation piles pre-buried in a foundation pit, a reinforcing plate is connected between every two adjacent foundation piles, and each reinforcing plate comprises a frame connected with the corresponding foundation pile; a supporting plate used for moving in the direction close to the side wall of the foundation pit and abutting against the side wall of the foundation pit is inserted into the frame, and a reinforcing assembly for locking the supporting plate and the frame is connected to the supporting plate. The foundation pit side wall structure has the effect that the situation that soil on the side wall of a foundation pit slides off is further reduced. 本申请涉及一种基坑支护装置以及基坑支护方法，涉及基坑支护的领域，包括预埋在基坑内的多个基桩，每两个相邻的基桩之间均连接有加固板件，加固板件包括与基桩连接的框架，框架内插接有用于向靠近基坑侧壁的方向运动并抵紧基坑侧壁的支撑板，支撑板上连接有将支撑板与框架之间锁定的加固组件。本申请具