CONSTRUCTING METHOD OF HEAT EXCHANGER PIPE

摘要

The present invention enables a geothermal exchanging pipe to be inserted into and installed in an underground drilling unit on the ground while temporarily connecting a ground extension member and the geothermal exchanging pipe using a connection device. Moreover, the present invention enables the ground extension member to be separated from the geothermal exchanging pipe to be removed before excavation of a portion to be excavated. The present invention excavates the portion to be excavated in order to remove cutting work of a portion existing in an excavation portion in an excavation process of the excavation portion and prevents degradation of performance of the geothermal exchanging pipe caused by foreign substances introduced into the geothermal exchanging pipe in the cutting work.