济宁二号煤矿井筒稳定因素分析

Ji three mine and Ji two mine wellbore stability factor analysis

为了探求井筒稳定的因素,制定防治方案,探讨了济宁二号煤矿及济宁三号煤矿井筒稳定的原因,连续监测了济宁二号煤矿井壁、地面及井架的变化情况,分析了济宁二号煤矿冲积层水动态特征,比较了济宁二号煤矿与济宁三号煤矿冲积层特征的相同点和不同点,结果表明济东地区第四系含水层水位保持长期稳定能够防止土层固结压缩而引起的地层下陷,从而避免"附加应力"的产生,保证井筒的安全稳定。

In order to explore wellbore stability factors, according to shaft failure mechanism, discusses the Jining No. two coal mine and Jining No. three coal mine shaft stability reasons, continuous monitoring of the Jining No. two coal mine shaft, the ground and the derrick changes, analysis of the Ji two mine alluvial water dynamic characteristics, compared the Ji two and Ji three mine alluvium characteristic of the same points and different points, the result shows that the Jidong in the Qua^ernm＇y aquifer in water level to maintain the long-term stability to prevent the soil consolidation and compression caused by land subsidence, thus avoiding the＂ stress＂, ensure the safety and stability of wellbore.