The hydraulic connection analysis of Tong Luoshan Anticline system with North warm spring Anticline system the crossing area of newly built railway tunnel

Tong Luoshan Anticline and North spring Anticline are the typical comb folds, the two anticlines are joined at the Changjiang River. Many cold and warm springs appear in the zone, the exploitation of springs influents directly the local survival environment and the economics. About 10 warm spring examples appearing fixedly in four river banks locating in these two anticlines were collected for chemical and isotope analysis. The isotope altitude effect shows that the supplying level of warm water is about 1000 meters high, and the supply area is far away from the area the springs appearing, but the cold spring supply comes from the rains nearby. The groundwater is divided into deep and shallow groundwater. The inverse modeling shows that these warm water systems of the two different anticlines have hydraulic connection, and hydraulic connection modeling of the cold water flowing in sallow stratum with the warm water shows that the connection is influent by the specific geological environment and location where the springs appear. The sallow underground flowing is controlled by rivers and ravines, and is divided into two systems by the aquiclude locating at the anticlinal core.