1. Drainage by the sheet pile method refers to digging and laying the neck 1-1.2m above the roof of the aquifer, then setting the outer guide ring, assembling the sheet piles into a cylindrical shape along the periphery of the barrel, and setting the inner guide ring. Each sheet pile is driven in sequence (or in groups), and the progress is 0.5-1.0m each time. The next progress is entered in the opposite direction. After the sheet pile passes through all the aquifers and enters the lower water-resisting layer for 1-2m, the wellbore construction of this section can be carried out.

2. Water wells are of great significance to the development of human civilization. Before the appearance of water wells, human beings lived by the water and could only live in places with surface water or springs. The invention of water wells expanded the scope of human activities. China is one of the earliest countries in the world to develop and utilize groundwater. The earliest well discovered in China is the well at the Hemudu ancient cultural site in Yuyao, Zhejiang, and its age is about 5,700 years ago. This is a rather delicate square wooden well with a depth of 1.35 meters and a side length of 2 meters. It can be inferred from this that the appearance of primitive wells was much earlier.

What is the difference between a baffle brace and a sheet pile brace?

The difference between baffle support and sheet pile support is that the support points are different:

1. Cross-bracing support When excavating narrow foundation pits or trenches, cross-bracing support is often used. Depending on how the retaining boards are placed, the cross-bracing supports can be divided into horizontal retaining boards and vertical retaining boards. The former can be divided into intermittent and continuous.

2. Sheet pile support Sheet pile is a support structure, which not only retains soil but also waterproofs. A steel sheet pile wall is formed by connecting the steel sheet piles to each other.

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