The early geological prospecting on the west extension line of R2 starts on.

　　Recently workers are under the geological prospecting on the west extension line of R2 ,the rail transit on the pavement causeway on the middle part of Zhangzhuang Road. Workers have drilled a deep well ,the deepest is 39 meters , with the diameter of 15cm. The main part of the underground is the clay layer and diorite , not springs, according to the prospecting. The preliminary prospecting report of R2 will be submitted by the end of May and the detailed report will be submitted by the end of July, according to the plan published in bids.