Cuncaota Mine, Shenhua Shendong Coal Group Corporation Limited

In order to solve the low heading efficiency rate problem caused by the limited operation space and improper dispatch of the heading equipment and sup port equipment during the single mine roadway heading, with a new high efficient single mine roadway rapid heading system and the related equipment in operation, the optimized heading technology, mobile equipment number reduced in Daliuta mine, the safety level of the operation zone was improved and the single mine roadway hea ding efficiency was highly improved. Also the front no support roof of the new systemic bolt dilling rig, transportation system jammed, poor ventilation dust control effec t and other problems were solved. A max month heading rate was 1 500 m and a max day advancing rate was 68 m. Full dust density was reduced from 134. 8 mg/m3to 76.5 mg/m3and respirable dust density was reduced from 26.2 mg/m3to 9.1 mg/m3.

国家高技术研究发展计划(863计划)资助项目(2012AA062203)；