ZDY25000LDK智能化定向钻进装备关键技术研究

利用顺煤层、顶板高位钻孔抽采煤层气是当前煤矿井下煤层气综合治理最直接、有效的方法。提高定向钻孔钻进速度和起伏变化大、薄厚不均煤层中的钻遇率，降低施工人员劳动强度，提高钻孔事故预防能力，适应煤矿智能化发展需求，满足煤矿井下长距离定向钻孔施工的智能化钻进装备是当前煤矿井下钻探领域亟待解决的重要问题。基于地质导向和旋转导向钻进施工对钻机精确控制的实际需求，以及煤矿智能化发展的迫切需要，提出了基于防爆电液控制技术的煤矿井下长距离定向钻进装备自动化控制和分体紧凑布局设计的集成化解决方案。重点解决总体紧凑布局设计、关键执行部件设计、自动装卸钻杆技术、防爆电液控制技术、大流量泥浆泵单元设计等设计和技术。研制的ZDY25000LDK智能化定向钻进装备，实现了长距离定向钻进施工过程中自动化装卸钻杆控制、智能化定向钻进施工、参数实时监测以及典型故障智能诊断与预警等功能，使定向钻进装备的智能化水平得到全面提升，为旋转导向和地质导向施工，以及“以孔代巷”大直径定向钻孔高效施工提供了可靠装备保障。 

Research on key technologies of the ZDY25000LDK intelligent directional drilling equipment

It is the most direct and effective method to extract coalbed methane by drilling along the coal seam and high-level drilling on the roof for comprehensive treatment of coalbed methane in underground coal mines. Improving the drilling speed of directional drilling and the drilling encounter rate in the coal seam of uneven thickness with large fluctuation, reducing the labor intensity of the personnel, enhancing the ability to prevent drilling accidents, and adapting to the intelligent development needs of coal mines, the intelligent drilling equipment for long-distance directional drilling in coal mines are all the important problems to be solved in the field of coal mine underground drilling. In view of the actual demand for accurate control of drilling rigs in geologic steering and rotary steering drilling and the urgent need for intelligent development of coal mines, an integrated solution of automatic control and split compact layout design of the underground long-distance directional drilling equipment in coal mine based on explosion-proof electro-hydraulic control technology is proposed in this paper. It focuses on the design and technology to be solved, such as overall compact layout design, key executive parts design, automatic drill pipe loading and unloading technology, explosion-proof electro-hydraulic control technology, large flow mud pump unit design. The ZDY25000LDK intelligent directional drilling equipment realizes the functions of automatic loading and unloading drill pipe control, intelligent directional drilling, real-time monitoring of parameters, intelligent diagnosis and early warning of typical faults in the process of long-distance directional drilling, so as to comprehensively improve the intelligent level of directional drilling equipment. At the same time, it provides reliable equipment guarantee for rotary steering and geologic steering construction, as well as the efficient construction of “drilling borehole instead of roadway” large-diameter directional drilling.