STUDY ON SHAFT SINKING TECHNOLOGY BY BORING METHOD IM GUOTUN MINE OF JUYE COALFIELD

The technology of large diameter shaft boring had notablely been developed for constructing coal mine shaft in China.However,the thickncss of Cainozoic group alluvium is 570m at Guo Tun coal mine that will be constructcd at Ju Ye coal field in Shandong province,it is greatly larger than 440m that is the most thickness of alluvium passed by shaft boring method in China at present.Boring a 610m deep large diameter hole and lining shaft at Guo Tun coal mine is a challenge for constructing technology.In this paper,The feasibility of shaft boring at Guo Tun coal mine was discusscd,and questions for study were suggestcd.