抄録
The establishment of the horizontal ground heat exchanger has been done in Japan so far by excavator digging. However, there are many problems in the excavation in the Japanese city part, such as the small range and the noise. Accordingly, the horizontal ground heat exchanger that used new technology is reported about the way of installing it. This method of construction is used for the gas pipe install and so on by master from the ground. This technology is to dig it along the laying underground expected line to a position of arrival. Then, the ground heat exchanger is pulled from the arrival side to the starting side, and laid with reaming a pipe way by back reamer. The horizontal ground heat exchanger can be installed quickly even in the place where it can not be excavated by this technology.
