1) soften with hydraulic fracturing
水力致裂软化
1.
According to the complex geological conditions at 21112 face,such as large coal hardness,the local fine-grained sandstone roof,fully mechanized mining with caving of roof coal in the second hierarchical seam,pre-splitting with loose blasting,soften with hydraulic fracturing and fit coal caving technology are pointed out by theory analysis and the scene measuring.
根据某矿21112工作面煤层硬度大,局部为细砂岩顶板,又是第二分层综放开采的复杂采矿地质条件,采用理论分析和现场实测的方法,得出松动爆破预裂、水力致裂软化和适宜的放煤工艺。
2) water fracturing
水力致裂
1.
According to the condition of Chengjiashan-coal mine s coal-bed and the technology of coal-mass s water fracturing, water injectionparameters are decided and program of water fracturing is designed on the basis of analyzing and researching the key question in water fractur-ing of hard coal-mass.
在分析和研究坚硬煤体水力致裂技术关键问题的基础上,本文根据陈家山矿煤层具体条件,依据煤体水力致裂技术原理,确定注水参数,选择煤层注水方案。
3) water-induced softening
水致软化
4) directional hydraulic fracturing
定向水力致裂
1.
Study on site test of directional hydraulic fracturing of hard roof
定向水力致裂坚硬顶板的现场试验研究
5) cracking stress
致裂应力
1.
The results showed that the concrete cracking stress at the early age was associated with the creep and internal and external con-straints directly.
研究表明,早龄期混凝土致裂应力主要与徐变和内外约束有关。
6) Hydro-fracturing ground stress measurement
水压致裂法地应力测量
补充资料：水力
1.水流的冲击力。 2.指水路的运输费。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条