【摘要】 "钻孔双端封堵测漏"是一种通过专用设备在煤层顶板钻孔中进行加压注水,根据钻孔壁岩体破坏前后注水漏失量的变化来确定导水裂隙带高度的实用裂高测试技术。通过刘庄煤矿121101工作面覆岩破坏裂高原位测试应用表明,该技术具有原理简单、成果直观等特点。更多还原

【Abstract】 The technology of double-block leak hunting in drill is pratical to detect height of fractured zone of coalface overburden.Its principle is estimatting the detection result by leakage changes before and after rock mass destruction around drill that constructed in advance.Some advantages for example having simple principle and intuitive results have been demonstrated by actual applications at 121101 coalface in Liuzhuang Coal Mine.更多还原