煤矿井巷贯通分为五类,煤炭工业部颁布的《煤矿测量试行规程》律定,这五类贯通的允许偏差值为: 由此看出,贯通精度好坏的衡量标准,是贯通面上两中线、腰线间的偏差与规程规定允许偏差值相比,等于或小于上表数值,为达到或高于部颁精度,贯通巷道均可满足工程需要,否则即为达不到部颁标准,巷道即使贯通也满足不了工程需要,将给国家造成经济损失,尤其是大型贯通,损失将更大。在实际贯通测量中,尽管每一个工作人员都比较谨慎,但并非都能达到或高于部颁 Through coal mine shaft is divided into five categories, the Ministry of Coal Industry promulgated the “Coal Mine Measurement and Testing Regulations,” the law, these five categories through the allowable deviation value: From this we can see that through the accuracy of the measure is through the surface The deviation between the two midline and the waistlines is equal to or less than the value of the allowable deviation as prescribed by the rules. To meet or exceed the precision of the ministries, the through tunnel can meet the engineering needs, otherwise, the ministerial standard is not reached Even if the roadway can not meet the construction needs, will cause economic losses to the country, especially large-scale through, the loss will be even greater. In practical measurement, although each staff member is more cautious, not all of them meet or exceed the ministerial