Example of Application of Mechanized Digging Work Method for Collector Well

Conventionally, collector wells have been largely dug by manual labor and the workers have been likely to be exposed to breakdown of underground walls, generation of toxic gas, lack of oxygen, and the like. There has been another problem related to construction efficiency; since the tools such as breakers are used, a excavation speed drops extremely if a natural ground gets harder. Considering the above-mentioned background, this time, we have introduced a mechanized excavation method to dig the collector wells in order to realize labor-saving by mechanized construction and improvement of safety such as mechanized excavation by remote-control robot, carrying out of excavated muck by vacuum, releasing of workers from a deteriorated work environment. In this thesis, we would like to present the cases in which digging work robots were introduced in collector well construction which was one of anti-landslide construction work and report construction conditions, track record, improvements in the field, and future prospect.