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根据姚桥矿7717综采工作面材料道为全煤巷道,单轨吊辅助运输选用长2.4m锚杆悬吊,锚杆受施工条件限制,其长度不足以穿过煤层锚固到上部质地坚硬的围岩,特别对于煤层顶板破碎发育的巷道区段,锚杆难以承受单轨吊荷载,运输安全性无法保障这一工程现状,基于原悬吊方案进行改进,提出运用接长锚杆解决巷道围岩破碎区段单轨吊悬吊技术难题。接长锚杆实验室抗拉测试及现场拉拔测试结果表明,其强度能够满足悬吊单轨吊的要求。在悬吊单轨吊工业性试验中提出具体的安装措施,应用实践获得成功。
According to Yaoqiao mine 7717 fully mechanized mining face material roadway for the whole coal, monorail crane auxiliary transport selection of long 2.4m anchor hanging bolt is limited by the construction conditions, its length is not enough to anchor through the coal seam to the upper hard texture Rock, especially for the roadway section with broken roof, the rock bolt can hardly bear the monorail load and the transportation safety can not guarantee the status quo of this project. Based on the original suspension scheme, it is improved that the use of long bolts to solve the rock crushing Section monorail suspension technology problems. Then long anchor laboratory tensile test and field pull test results show that its strength to meet the requirements of the suspension monorail. In the suspension monorail industrial test put forward specific installation measures, the application of success.