大倾角煤层长壁综采支架典型应用实例及改进研究

Typical application examples and improvement research of hydraulic powered support applied to fully-mechanized longwall coal mining face in steep dipping seam

通过分析我国大倾角煤层走向长壁综合机械化开采技术取得的发展,结合大倾角中厚煤层综采、大倾角特厚煤层长壁综放和大倾角厚煤层4.5 m大采高综采工程实践的典型实例,论述了大倾角煤层综采支架的使用效果与改进情况。归纳总结出了直接决定大倾角综采支架使用效果的亟待解决的重大问题,如支架过重、侧护板伸缩不灵、底调千斤顶现场无法更换以及不能带压移架等。建议以"工作阻力适中化、抗倒滑可靠化、架重轻型化"的理念主导大倾角液压支架的持续改进,最后对掣肘大倾角综采支架持续改进的相关深层次问题进行了梳理与思考,以协同促进大倾角综采支架向标准化发展。

With the analysis on the development obtained from the fully-mechanized mining technology along the strike of the steep in- clined seam in China,in combination with the typical cases of the fully-mechanized coal mining in the steep dipping medium thick seam, the fully-mechanized longwall top coal mining in the steep dipping ultra thick seam and the fully-mechanized 4.5 m high cutting mining engineering practices in the steep dipping thick seam, the paper expounded the application effect and the sustainable improvements of the hydraulic powered support applied to the fully-mechanized coal mining in the steep dipping seam. The paper concluded and summarized the several major problems to be solved directly affected to the application effect of the hydraulic powered support applied to the mecha- nized coal mining in the steep dipping seam. The major problems were including the hydraulic powered support too heavy ,poor telescopic side guard plate, the floor adjusted jack hard to be replaced at the site, the hydraulic powered support hard to be pushed forward with the pressure on the roof and others. The paper proposed the sustained development of the steep dipping hydraulic powered support should be mainly based on the conception of ＂ the temperate working resistance, rehable anti lodging and sliding and lightening powered support weight＂. Those major problems were innovationally solved with the traditional concept breaking in the improvements. The preparation and consideration were conducted on the related deep level problems of the sustained improvements for the hydraulic powered support applied to the mechanized coal mining in the steep dipping seam in order to have wide attention and to eoordinatively promote the standardized de- velopment of the hydraulic powered support applied to the mechanized coal mining in the steep dipping seam.