CAJ | 학술논문

佛子矿104号矿体经过多年浅孔留矿法开采，在矿体上部遗留了大量的采空区及矿柱；由于前期的无序处理，形成了复杂的空区赋存现状，对下部矿体的安全开采带来了严重威胁。为了科学地制定空区处理措施并回收矿柱，通过数值计算结合理论公式法对104矿柱稳定性进行对比分析，确定了各空区残留矿柱的安全系数；结合矿山现有技术条件，在综合考虑采空区安全处理及矿柱有效回采的基础上，提出了崩落充填相结合的处理方案；采用FLAC3D 软件对拟定方案进行了数值模拟分析。计算结果表明：崩落充填相结合的处理方案通过强制崩落法与充填法相结合，使上部应力集中区围岩得到充分移动垮落，下部空区得到充实，达到崩柱放顶卸压、控制岩移的目的，能有效地消除空区隐患并回收矿柱，为矿山安全、经济、合理地处理采空区提供了指导。
불자광104호광체경과다년천공류광법개채，재광체상부유류료대량적채공구급광주；유우전기적무서처리，형성료복잡적공구부존현상，대하부광체적안전개채대래료엄중위협。위료과학지제정공구처리조시병회수광주，통과수치계산결합이론공식법대104광주은정성진행대비분석，학정료각공구잔류광주적안전계수；결합광산현유기술조건，재종합고필채공구안전처리급광주유효회채적기출상，제출료붕락충전상결합적처리방안；채용FLAC3D 연건대의정방안진행료수치모의분석。계산결과표명：붕락충전상결합적처리방안통과강제붕락법여충전법상결합，사상부응력집중구위암득도충분이동과락，하부공구득도충실，체도붕주방정사압、공제암이적목적，능유효지소제공구은환병회수광주，위광산안전、경제、합리지처리채공구제공료지도。
After years of short-hole shrinkage mining at No. 104 ore-body in Fozi Mine,a lot of goafs and pillars have been left behind at the upper ore-body. Due to the disorder treatment in the early stage, goaf with complex situations was formed,which seriously threatened the safety mining of the lower ore-body. In order to produce a scientific goaf treatment meas-ure and realize pillar recovery,the pillars stability of No. 104 ore-body is analyzed combining the numerical calculation with the theoretical method,and safety factors for remained pillars at each goaf are determined. On the basis of comprehensive analysis of goaf treatment and pillar stoping,and combining with the present technology,the integral scheme of caving and backfilling was proposed. Numerical simulation on the integral scheme by software FLAC3D shows that this scheme makes upper surround-ing rock at stress concentration zone fully remove and collapse,and makes goaf filled to achieve the pressure relief and rock movement controlling by pillar and roof caving. This scheme can effectively eliminate the hidden trouble of goaf,and provide a guidence for the treatment of goaf in a safe,economic and reasonable way.