可节省吨煤成本0.75元左右、重复使用100次以上、大大降低劳动强度和提高工作面安全性的尼龙双柱鞋日前在淮北芦岭煤矿试用成功。这一成果填补了我国煤矿支护方面一项空白。π型钢梁简易放顶煤工艺在煤矿应用后,虽然效率高、成本低,但在生产过程中存在单体支柱初撑力和工作阻力低等问题。为确保安全生产,许多煤矿主要采取给单体支柱穿木鞋的措施,但效果并不理想。芦岭矿通过反复调研论证,提出了穿双柱鞋的设想,联合有关厂家研制出尼龙双柱鞋。半年多的试验表明,采用尼龙双柱鞋后单体支 Can save tons of coal costs 0.75 yuan, repeated use of more than 100 times, greatly reducing labor intensity and improve the safety of the work surface double-column shoes recently in Huaibei Luling coal trial success. This achievement has filled a blank in coal mine support in our country. π type steel girder simple top coal caving technology in coal mines, although the high efficiency and low cost, but in the production process there are single prop propping force and low work resistance and so on. In order to ensure safe production, many coal mines mainly take measures to wear wooden shoes to single props, but the results are not satisfactory. Luling mine through repeated research and feasibility studies, put forward the idea of ​​wearing double-column shoes, joint manufacturers to develop nylon double-column shoes. More than six months of tests show that the use of nylon double post single branch shoes