综采工作面液压支架作为掩护支架快速回撤技术研究

文章以车集煤矿2701综采工作面支架回撤为例,研究了利用原工作面液压支架作为掩护支架支护的快速回撤技术,并与2707工作面采用单体支柱配合π型梁支护的普通回撤技术的应用效果进行对比,结果表明,采用原工作面液压支架作为掩护支架实现工作面快速回撤技术在支护效果、施工工艺、回撤工期及材料消耗上具有显著优势,可实现工作面的安全高效回撤,保证工作面的正常接替。

Study on Rapid Equipment Withdrawing Technology with Hydraulic Powered Support of Fully Mechanized Coal Mining Face as Shield Support

In the process of coal mine production, with the improvement of mechanization degree, the high power and large tonnage equipments appear, the working face equipment withdraw is becoming more and more important, the safety and efficiency of equipment withdraw will influence the normal association of working face directly. Taking the 2701 fully-mechanized working face support withdrawing as example, the shield support is adopted heading withdrawing to achieve the purpose of safety withdrawing of working face support. In comparison with the support withdrawing application effects of the 2701 working face and the 2707 working face, the results show that the shield support has significant advantages in supporting effect, construction technology, withdrawing time and materials consumption, achieving the safety and efficiency of equipment withdraw in working face and guaranteeing the normal association of working face.