【摘要】 煤层底板破坏深度是评价华北型煤矿突水危险性的关键指标,在注水法和声波测试法造价太高且不具备条件的情况下如何获得这一参数,一直是摆在科技人员面前的重要课题。通过轩岗矿区刘家梁煤矿的实验,探索了应变测试底板破坏深度的途径,正确地评价了刘家梁煤矿5124工作面底板突水的危险性,这一方法在我国的底板破坏深度探测领域具有推广价值。更多还原

【Abstract】 The failure depth of coalfloor is one of the key indexes for evaluate water inrush risk threatened by the strong limestone aquifer in north China coal field.Under the case that the costs of injection or ultrasonic measure are too high to applying,how to obtain the parameters is important to the hydro geologists in the mine water prevention.In this paper,the approaches of applying strain method to measure the depth of coal floor failure are discussed,the hazards water inrush from coalfloor in work face 5124 in Liujialiang mine are avaluated.The method is applicable to other coal mines in the depth detection in our country.更多还原