1:45 PM - 3:15 PM
[O08-P104] Possibility of disaster prevention by plants
~The effect of tree roots on landslide disaster prevention was observed~
Keywords:Disaster prevention, Landslide
We wanted to do some research related to disaster prevention and mitigation, and our focus was on landslides. In researching previous studies, we found a study that examined whether the presence or absence of plants (roots) makes a difference in the likelihood of landslides. We are conducting our research with reference to this study in order to investigate not only the presence or absence of roots, but also the susceptibility to landslides depending on the shape of the roots.
In this research, we have built a device to reproduce landslides based on previous studies, and we are conducting experiments using this device as our research method. In the experiment, the device was made to reproduce a mountain slope, and the type of soil, precipitation, and slope angle were used as fixed conditions, while the shape of the roots was used as a comparison condition. The 3D printed root models were made in cooperation with Fab Lab nagano in the Faculty of Education, Shinshu University. The following is a list of the different root shapes. Based on the descriptions and diagrams in the paper describing the types of root shapes, clay models were made, scanned, and printed with a 3D printer.
The root model was made by scanning the model and printing it on a 3D printer. TPU filament was used as the material to reproduce fine and thin shapes with less breakage. The shape of the model was reproduced based on the description in the paper as already mentioned. This is because we thought that it would not be possible to reproduce the characteristics of the root shape in a simplified manner by simply imitating a photograph of an actual tree root.
In our current experiment, we are using a 3D printed model of the root, but in the past, we have made a model of the root using a braid. First, the results are shown below. The amount of water required to induce collapse increased by a maximum of 3 liters when a model of a braid was used. Through the experiment using a model of a braid, we decided to use a 3D printer because we thought that a braid was not suitable for the experiment in terms of shape reproduction and strength.
Although the experiment using the 3D printed model is still in progress, the amount of water required for the collapse of the model with roots created by the 3D printer increased by up to 3 liters compared to the model without roots. This experiment is still in progress, but only one root model has been used in this study.
The results demonstrate that the presence of roots reduces the likelihood of landslides. However, we have not yet been able to verify the difference in disaster prevention effectiveness between different root shapes, which is the main issue. In the future, we would like to use a 3D printer to create models of other root types and verify the difference in disaster-prevention effects due to different root shapes.
In this research, we have built a device to reproduce landslides based on previous studies, and we are conducting experiments using this device as our research method. In the experiment, the device was made to reproduce a mountain slope, and the type of soil, precipitation, and slope angle were used as fixed conditions, while the shape of the roots was used as a comparison condition. The 3D printed root models were made in cooperation with Fab Lab nagano in the Faculty of Education, Shinshu University. The following is a list of the different root shapes. Based on the descriptions and diagrams in the paper describing the types of root shapes, clay models were made, scanned, and printed with a 3D printer.
The root model was made by scanning the model and printing it on a 3D printer. TPU filament was used as the material to reproduce fine and thin shapes with less breakage. The shape of the model was reproduced based on the description in the paper as already mentioned. This is because we thought that it would not be possible to reproduce the characteristics of the root shape in a simplified manner by simply imitating a photograph of an actual tree root.
In our current experiment, we are using a 3D printed model of the root, but in the past, we have made a model of the root using a braid. First, the results are shown below. The amount of water required to induce collapse increased by a maximum of 3 liters when a model of a braid was used. Through the experiment using a model of a braid, we decided to use a 3D printer because we thought that a braid was not suitable for the experiment in terms of shape reproduction and strength.
Although the experiment using the 3D printed model is still in progress, the amount of water required for the collapse of the model with roots created by the 3D printer increased by up to 3 liters compared to the model without roots. This experiment is still in progress, but only one root model has been used in this study.
The results demonstrate that the presence of roots reduces the likelihood of landslides. However, we have not yet been able to verify the difference in disaster prevention effectiveness between different root shapes, which is the main issue. In the future, we would like to use a 3D printer to create models of other root types and verify the difference in disaster-prevention effects due to different root shapes.