CAJ | 학술논문

运用FLAC-3 D软件对济阳煤矿中部的李家断层的防水煤柱进行了数值模拟研究。通过留设不同宽度的保护煤柱，分析煤层周围及断层附近塑性区及最小主应力变化情况，得出了断层煤柱的合理留设宽度，1煤和7煤的保护煤柱宽度分别为50m和70m。断层煤柱的合理留设为采区煤层安全开采提供了保障。
운용FLAC-3 D연건대제양매광중부적리가단층적방수매주진행료수치모의연구。통과류설불동관도적보호매주，분석매층주위급단층부근소성구급최소주응력변화정황，득출료단층매주적합리류설관도，1매화7매적보호매주관도분별위50m화70m。단층매주적합리류설위채구매층안전개채제공료보장。
The waterproof coal pillars of the Lijia fault which was in the middle of the Jiyang coal mine were studied by numerical simulation adopting FLAC-3D software when mining the first and the seventh coal seams.By leaving different width’s coal pillars ,the changing of the plastic zone and the smallest main stress was analysed and the coal pillars’rational leaving width was obtained.The first and the seventh coal seams’waterproof coal pillars were respectively fifty meters and seventy meters. The rational leaving of the fault’s waterproof coal pillars will ensure the safe mining in the section.