The Use of KOBEL Brick for Repairing Soil that Subsides Due to Water Flow

Abstract

The flow of water in the sub-soil tends to transport fine soil particles to other places. This happens, especially during heavy rains, where rainwater that seeps into the ground, flows carrying fine particles into the pond, and causes the soil surface to subside in certain parts. This encourages a study to be carried out to apply KOBEL bricks to overcome this. KOBEL bricks have 2 holes with a diameter of 5 cm, when arranged, they will form a pipe that can regulate the flow of water, so it does not carry fine grains that flow or are eroded. The simple concept of providing available water flow can prevent soil erosion and minimize the negative impact on soil subsidence due to water flow in the soil. KOBEL bricks are made from soil base material that is pressed up to 62.5%, applied as soil improvement, so that the soil surface becomes stable and does not sink anymore. From the results of the application of the KOBEL brick for the subsided soil surface, it turns out that the surface is no longer sinking. It can be concluded that the use of KOBEL bricks which is very easy to do and requires very low cost can be used to overcome soil subsidence due to water flow in the soil.