斯列萨列夫公式在矿井水害防治中的应用分析

Application Analysis of Слесарев Formula in Mine Water Hazard Prevention

针对斯列萨列夫公式在矿井水害防治中的广泛应用并被写入《煤矿防治水规定》等相关文献和书籍中,运用材料力学原理论证了防隔水煤岩柱留设宽度、探放水钻孔超前距及止水套管长度公式是基于简支梁模型的理论公式,安全水头及安全隔水层厚度公式是基于超静定梁模型的理论公式。因简支梁模型理论公式实际运用时存在力学误差,为防止计算L值过小导致突水事故发生,强调斯列萨列夫防隔水煤岩柱留设宽度、探放水钻孔超前距及止水套管长度公式增加安全系数K及在此基础上仍需遵守《煤矿防治水规定》的必要。因回采工作面底板矿压显现规律明显及承受的压力非均布载荷,强调斯列萨列夫安全水头及安全隔水层厚度公式仅适用于掘进巷道突水危险性评价。

According to wide application of CДecapeB formula that have been written in Rule of Mine Water Hazard Prevention and relat- ed literatures and books in mine water hazard prevention, through the principle of materials mechanics, formulas of retaining width of waterproof coal pillar and advanced distance and water stop casing length of probing and discharging borehole are proved from the theory formula based on the mode of simply supported beam. The formulas of safety hydraulic head and aquiclude thickness are proved from the theory formula based on the mode of statically indeterminate beam. Because mechanical error exists in actual application of theory formula based on the mode of simply supported beam, in order to avoid water inrush due to the smaller L value, the necessity to in- crease safe coefficient K value and abide by Rule of Mine Water Hazard Prevention is emphasized. Because obvious regularity of ground pressure and non - uniform load exist in working face floor, CДecapeB formula of safety hydraulic head and aquiclude thickness are only suitable for risk assessment of gateway water inrush.