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分析了复杂地质条件下的极薄煤层下向钻孔测压的难点,并对传统的封孔测压方法进行了选择和优化,在此基础上提出了双液浆直接固定孔口管-高压注浆-MⅡ型瓦斯压力测定仪三步走测压技术,并运用在梁北煤矿井筒揭煤测压工作,取得了良好的效果。
The difficulty of pressure measurement under the extremely thin coal seam under complicated geological conditions is analyzed. The traditional method of sealing pressure measurement is selected and optimized. On the basis of this, the direct fixed orifice pipe with double liquid slurry - high pressure Grouting-M Ⅱ gas pressure meter three-step pressure measurement technology, and the use of Liangbei coal mine borehole coal manometry work and achieved good results.