为了有效地治理淮北矿区底板断层突水,针对不同断层情况采取了不同的措施。在煤柱留设方面,充分考虑了断层倾角和断层对煤体渗透性的影响;在注浆、疏放水方面,考虑各个含水层之间的水力联系。研究和实践表明:与传统的按规程和经验留设煤柱相比,在考虑到断层倾角和断层对煤体的影响基础上进行煤柱留设更加科学合理。桃园矿F2断层倾角为60°,处于临界角;为安全考虑,在留设煤柱后还应加强底板监控,防治断层引发的底板突水。注浆前先进行放水试验可以更好地了解含水层之间的水力联系,对注浆工作有指导作用。朱庄矿和杨庄矿的工程实践也说明了注浆对于阻止小断层构造引发的突水效果显著。
To get effective management of water-inrush from backplane fault in Huaibei mining area, different measures are taken for different fault situations. Fault dip and coal permeability influenced by fault were fully considered on coal pillar design and hydraulic connection between the aquifers also considered on grouting and water drainage. Research and practice showed that the coal pillar preserve is more scientific and reasonable after considering the fault dip and coal permeability influenced by fault ,compared with the traditional coal pillar design. The fault dip of 60° at Fault F2 of Taoyuan Mine is the critical angle. For security, backplane monitoring should be strengthened after preserving the coal pillar to prevent from and treat water inrush caused by fault. The drainage tests before grouting can better understand the hydraulic connection between the aquifers and play a guiding role in grouting. Engineering practice in Zhuzhuang mine and Yangzhuang mine also shows that grouting has a remarkable effect on preventing water-inrush caused by some minor faults.