几年来,各矿在使用管理与维修单体液压支柱(以下简称单柱)方面都积累了不少经验,取得了良好的经济效果。单柱与大功率采煤机、运输机等配套,组成了高档生产工作面,使煤炭单产水平由普采年产20万吨,提高至30万吨以上。单柱又是高档普采典型的关键设备。装备一个高档面约需资金150～200万元,需配单柱1500根左右,显然单柱在数量、费用上对高档面均占有重要地位。因此管好、用好单柱是非常必要的。一、单柱的使用和管理单柱与摩擦支柱相比较,它具有结构较复杂,零部件多、加工精密,管理要求高等特点。在井下变化无常的地质条件及作业环境中,往往造成了单柱的损坏率高,而且随 Over the past few years, various mines have accumulated a great deal of experience in using the hydraulic props for management and maintenance of single units (hereinafter referred to as “single columns”) and achieved good economic results. Single-column and high-power shearer, transport aircraft and other ancillary facilities, composed of high-grade production work surface, so that the level of coal yield by ordinary mining an annual output of 200,000 tons, increased to 300,000 tons and above. Single-column is a typical high-end general mining equipment. Equipped with a high-grade surface about 150 to 200 million funding needs to be equipped with about 1500 single-column, it is clear that the number of single-column, the cost of high-grade surface occupies an important position. Therefore, good management, it is necessary to use a single column. First, the use and management of single-column Single-column and friction compared to the pillar, which has a more complex structure, parts and more sophisticated, high management requirements. In the downhole volatile geological conditions and operating environment, often resulting in a single column of high damage rates, and with