Abstract: According to solve the traditional cleaning problems of underground sump, combined with zhujidong coal mine site application conditions. The paper introduced a new dredging method of the mine water sump in combination with the traditional technique and the pneumatic diaphragm pump technology, including the basic principle, dredging technique and stated the technical advantages. The practices showed that the advanced technique method would have a good dredging result and a high efficiency, could reduce the labor intensity and ensure the requirements of the mine safety production.

Key words: underground Sump, dredging of water sump, slime, pneumatic diaphragm pump, new technology