發(fā)布時間：2019-02-17 11:32

【摘要】：頂板高位鉆孔是治理采空區(qū)瓦斯的有效技術(shù)手段之一,利用隨鉆測量定向鉆進技術(shù)施工頂板高位定向鉆孔可顯著改善采空區(qū)瓦斯治理效果和經(jīng)濟效果。針對當前頂板高位定向鉆孔鉆進深度淺、鉆進效率低和安全措施不夠等問題,研制了大功率定向鉆進裝備、優(yōu)化了鉆進成孔工藝方案和擴孔鉆具級配、開發(fā)了復(fù)合定向鉆進技術(shù)和大直徑擴孔技術(shù)等,形成了完整配套的定向鉆進技術(shù)與裝備�，F(xiàn)場試驗施工的大直徑頂板高位定向長鉆孔孔徑達到153mm,孔深達到1026m,先導(dǎo)孔鉆進效率大于41m/班。試驗結(jié)果表明,研究的鉆進技術(shù)和裝備滿足大直徑頂板高位定向長鉆孔實鉆深度、直徑和速度的需要,可用于大型工作面的采空區(qū)瓦斯抽采治理,對煤礦安全高效開采意義重大。
[Abstract]:High roof drilling is one of the effective techniques to control gas in goaf. Using directional drilling while drilling can significantly improve the effect and economic effect of gas treatment in goaf. Aiming at the problems of shallow drilling depth, low drilling efficiency and insufficient safety measures at present, the high power directional drilling equipment is developed, and the drilling process scheme and drilling tool grading are optimized. The combined directional drilling technology and the large diameter reaming technology were developed, which formed a complete set of directional drilling technology and equipment. The drilling efficiency of pilot hole is higher than that of 41m/ class. The hole diameter of large diameter roof is 153mm and the depth of hole is 1026m. The test results show that the drilling technology and equipment studied can meet the needs of the deep, diameter and velocity of the large diameter roof high position directional long drilling hole, and can be used for the gas drainage treatment in the large goaf of the working face. It is of great significance to the safe and efficient mining of coal mines.
【作者單位】： 西安科技大學(xué)建筑與土木工程學(xué)院;中煤科工集團西安研究院有限公司;
【基金】："十二五"國家科技重大專項項目(2011ZX05041-001) 陜西省2014年科技統(tǒng)籌創(chuàng)新工程計劃項目(2014KTCL03-14)
【分類號】：TD712.6

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