Glossary of technology and equipment for "earthwork structure"

Earthwork is the work of cutting mountains and burying soil in valleys to build Expressway.

The embankment slope that is completed by forming the portion of the valley that is filled with soil, forming it, and masonry / blocking and vegetation is called the “embankment slope”. On the other hand, the cut slope formed by cutting off the soil (mountains / hills) and forming it by masonry / blocking and vegetation is called the “cut slope”.

Vegetation slope Japanese noodles

The slope formed by cutting and filling is called the slope. We call this vegetation slope the one that protects the slope by protecting the slope with a lawn and tree planting to prevent the slope from collapsing due to rainfall and freezing and to improve the landscape by greening.

concrete Framer Wakuko

It is used to protect the slope when rainwater or soil with significant weathering.
There are three main types of concrete frame work: concrete block frame work, cast-in-place block frame work, and spray frame work.

Concrete block Builder Let's go

The main purpose is to prevent small-scale collapse of the lower part of the slope and to protect the lower part of the slope.
It is used when the slope is steeper than 1: 1 and the back ground (sand) is tight and the soil pressure is small.

concrete Spraying Let's wipe it

There is no spring on the slope and there is little danger at the beginning, but rocks that easily weather, rocks that may weather and peel off, are hard and solid immediately after cutting, but unstable due to seepage water from the surface It is used in places where vegetation cannot be applied due to soil and soil that are prone to soil.
The spray thickness is determined in consideration of the condition of the slope, but 10 to 15 cm is Standard.

anchor Engineering like this

It is used for the purpose of tightening the sloped surface by the tensile force of the steel rod (anchor) and for the purpose of suppressing the slippage of the sloped surface due to the shear resistance of the steel rod.

Rockfall prevention net Let's do something

It is a net installed on the slope to protect existing facilities such as roads from falling rocks on slopes where slopes may fall.
There are two types of rockfall prevention net structures.The rockfall prevention net that locks the rock that has lost its binding force to the ground by the tension of the net and the friction between the rockfall and the ground, and the rockfall entrance at the top is provided. There is a pocket type rockfall prevention net that has the function of absorbing the energy of rockfall when the rockfall collides with.

Rockfall prevention fence Rakusekibousaku

The rockfall prevention fence is a fence installed to prevent rockfall on the Expressway (main line).
The rockfall prevention fences are installed in places where it is judged to be dangerous only by the rockfall prevention net in case of rockfall on the long cut slope due to earthquake or heavy rain.