鹤岗
3.Taking Hegang coal mine as an example, this paper states the damages of mine pit water discharge, analyzes the cause of the water discharge and presents recommendations of prevention and cure measures.
4.Hegang coal field, of the type of a (inland) faulted basin far from the sea, was formed in the early Neo-Jurassic age about 140 million years ago.
5.Hegang CBM project No. HE-02 well used diamond wire-line core drilling. When it was drilling in Nanling conglomerate section of Shitoumiaozi Formation Jurassic System because of geological structure serious circulation fluid lost happened in depth of 238m 272m and 292m.
