旋挖钻机在急倾斜煤层火区治理中的取煤试验

Test of Coal Mining by Rotary Drilling Rig in Steeply Inclined Coal Seam

摘要:

针对正晖煤业昌元煤矿火区治理的特点，提出旋挖钻机在急倾斜煤层进行取煤的试验要求。而在倾斜工况下的旋挖采煤属于非正常工况作业，试验中进行了钻机晃动量、工作时整机晃动量、各钻进参数的变化、动力头驱动键的磨损情况、钻杆桅杆的变形程度以及出煤效率的综合评估。根据4种直径钻具的试验结果，得出了常规钻具的最优直径选择，并提出了在火区煤带，利用旋挖钻机全护筒作业方式进行“微创”治理的可行性探讨。

Abstract:

According to the characteristics of fire area treatment in the Changyuan coal mine of Zhenghui coal industry business, the test requirements of coal mining by rotary drilling rig are put forward in steep coal seam. But in the inclined state, auger mining is of non-normal working condition, the comprehensive assessment on rig shaking amount, shaking amount of the whole working machine, fluctuations of each drilling parameter, wear of power head drive key, deformation degree of drill mast and the efficiency of coal mining. Based on the test results of drilling tool of 4 different diameters, the optimal choice of conventional drilling tool diameter is obtained and the discussion is proposed on the feasibility of “mini-invasive” treatment by using rotary drilling rig full guard barrel operation in the coal belt of fire area.