CAJ | 학술논문

针对许厂煤矿11603工作面受底板十三灰、奥灰含水层威胁问题，开展了工作面带压开采安全性评价.分析了带压开采影响因素，并对工作面防治水工程效果进行了评价.采用突水系数法对十三灰、奥灰突水危险性进行了预测与评价，按疏降试验方案，十三灰疏降至安全水头情况下，对11603工作面安全开采影响较小；奥灰含水层突水系数小于临界值0.1 MP a/m ，但已接近临界值，开采过程中应加强奥灰含水层的监测.
침대허엄매광11603공작면수저판십삼회、오회함수층위협문제，개전료공작면대압개채안전성평개.분석료대압개채영향인소，병대공작면방치수공정효과진행료평개.채용돌수계수법대십삼회、오회돌수위험성진행료예측여평개，안소강시험방안，십삼회소강지안전수두정황하，대11603공작면안전개채영향교소；오회함수층돌수계수소우림계치0.1 MP a/m ，단이접근림계치，개채과정중응가강오회함수층적감측.
The No. 11603 face of Xuchang Coal Mine was threatened by the No.13 limestone and Ordovician limestone under floor,aiming at the problem,the safety evaluation for mining a-bove aquifer was carried out. Firstly,the influence factors of mining above aquifer were ana-lyzed,and the effect of water control proj ects was evaluated. Then the water inrush dangers of No.1 3 limestone and Ordovician limestone were predicted and evaluated by using water bursting coefficient method. According to the dewatering and depressurizing test scheme,the water level of No. 13 limestone dropped to secure hydraulic head,safety mining of No.11603 face would be little influenced. The water bursting coefficient of Ordovician limestone aquifer was less than the critical value 0.1 MPa/m,but it was close to the critical value,so the monitoring of the Ordovi-cian limestone aquifer should be strengthened during the exploitation.