多煤层条带穿层钻孔轨迹在线监测全数据分析法技术研究应用

Research and Application of Full Data Analysis Method for Online Monitoring of Multi Seam Strip Drilling Trajectory

多煤层条带消突钻孔施工数量多,测斜率低,钻孔轨迹难以准确控制,存在人工记录孔深不准确、钻孔偏斜等问题,导致钻孔控制精度不高。针对井下穿层钻孔群轨迹测量与分析的需求,设计开发了基于全数据分析法的钻孔轨迹在线监测技术与系统,通过实时监测施水压及钻孔倾角确定孔深,实时监测钻孔三维轨迹及盲区情况,并及时调整钻孔参数,指导钻孔施工。现场应用效果良好,有效保证了多煤层条带穿层钻孔安全高效施工。

The number of multi coal seam strip outburst elimination boreholes is large, the slope measurement rate is low, and it is difficult to accurately control the borehole trajectory. There are problems such as inaccurate manual record of the hole depth and borehole deflection, which lead to low drilling control accuracy. In view of the demand for the measurement and analysis of the trajectory of the underground through layer drilling group, the online monitoring technology and system of the borehole trajectory based on the full data analysis method are designed and developed. Through the real-time monitoring of the water pressure and the borehole inclination, the hole depth is determined, the three-dimensional trajectory of the borehole and the blind area is monitored in real time, and the drilling parameters are adjusted in time to guide the drilling construction. The field application effect is good, which effectively ensures the safe and efficient construction of multi seam strip cross seam drilling.