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煤炭部保安规程明确规定:“金属支柱制作及修复后,必须经过压力试验,符合试验要求后才能下井使用”。但是,多年来由于生产现场的条件所限,特别是缺乏适合矿区的试验设备,造成大量金属支柱失修或虽经修复却又不能保证使用性能。以铜川矿务局为例,八○年全矿区待修金属支柱达一万根,长期积压,给国家财产带来较大的损
Department of Coal security regulations clearly states: “Metal pillar production and repair, you must undergo a pressure test, in line with the requirements of the test before going to use ”. However, due to the limited production site conditions over the years, especially the lack of test equipment suitable for the mining area, a large number of metal pillars have been disrepair or have been repaired but can not be guaranteed to be used. Take Tongchuan Mining Bureau as an example. In 1980, there were 10,000 metal pillars to be repaired in the entire mining area, causing a long-term backlog and bringing greater damage to state property