water-injection drill

Factors,such as diameter size of injection holes on trees,diameter size of injector blowholes,trees species,trunk basal diameter and season changes,which might affect the absorption to 4% Imidacloprid liquid formulation(ILF)by trees,were analyzed with auto flowing trunk injection.

采用4%吡虫啉注干液剂,研究自流式注药过程中注药孔孔径、注药器通气孔孔径、树种、树干基径及季节等因素对药剂吸收的影响。

Method of pouring water into borehole to explore on the height of crack belt;

在含煤地层被厚松散层覆盖区域 ,采用钻孔注水法探测导水裂隙带高度 ,具有装置简单、工程量少、观测结果准确可靠、效果明显等优点。

Application of deep-hole water infusion technique in outburst prevention in heading faces;

深孔注水技术在掘进工作面防突中的应用