【摘要】 针对当前瓦斯压力测定技术存在的问题,提出了水—套管带压封孔测压技术,介绍了该技术的原理及工艺,在丁集煤矿13-1#煤层瓦斯压力测定中进行了应用,为了检验水—套管带压封孔技术测定煤层瓦斯压力的准确性,利用煤层瓦斯压力间接计算法计算出煤层瓦斯压力与测值对比,结果表明,瓦斯压力间接计算法求得煤层瓦斯压力在1.42~1.45 MPa之间,其数据与1#、2#钻孔现场测压值1.41~1.43 MPa基本吻合。更多还原

【Abstract】 On the basis of analysis of problems in current gas pressure measurements,a new measuring technology was proposed,namely water-casing pipe with pressure borehole sealing technology,and its principal and process were introduced.It was applied to the gas pressure measurement of No.13-1 coal seam in Dingji Coal Mine.In order to check its accuracy,the gas pressure of seam was calculated by indirect calculation method.The results showed that the calculated value was in the range of 1.42-1.45 MPa,which agreed well with the value of 1.41-1.43 MPa measured from No.1 and 2 boreholes.更多还原