特厚煤层综放面两柱掩护式放顶煤支架适应性研究

为了解决4107综采面使用ZF10000/23/37型四柱支撑掩护式放顶煤支架过程中存在移架速度慢、前后立柱受力不均衡等问题,研究了两柱掩护式放顶煤液压支架的架型特征,并根据矿井煤层地质条件和采煤工艺,4108综放工作面选用了ZFY12000/23/40D型两柱掩护式低位放顶煤支架。从工作面移架时间、放煤时间、资源回收率、支架安全阀开启率、支架检修情况以及支架片帮情况等方面,分析了4108综放工作面选用两柱式放顶煤支架适应性更优于四柱式放顶煤支架。

Study on Adaptability of two-pillar shielded top-coal caving support in fully mechanized top-coal caving face of extra-thick seam

In order to solve the problems of slow moving speed, unbalanced force between front and rear pillars, and poor adaptability to electro-hydraulic control system in the process of using ZF10000/23/37 four-pillar support and shield caving support in 4107 fully mechanized coal face, the characteristics of two-pillar shield caving hydraulic support are studied, and according to coal seam geology in mine. Under the condition and mining technology, ZFY12000/23/40D two-pillar shielded low-level caving support is selected in 4108 fully mechanized caving face. The adaptability of two-pillar caving support in 4108 fully mechanized caving face is better than that of four-pillar caving support in terms of working face moving time, caving time, resource recovery rate, support safety valve opening rate, support overhaul and support sheet side condition.