岩石力学与工程学报
巖石力學與工程學報
암석역학여공정학보
CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING
2014年
3期
475-483
,共9页
孙春东%姜福兴%刘懿%李永元
孫春東%薑福興%劉懿%李永元
손춘동%강복흥%류의%리영원
采矿工程%超高水材料%开放式充填%微地震监测%围岩运动
採礦工程%超高水材料%開放式充填%微地震鑑測%圍巖運動
채광공정%초고수재료%개방식충전%미지진감측%위암운동
mining engineering%ultra high-water material%open backfilling method%microseismic monitoring%surrounding rock movement
超高水材料充填开采对于围岩长期稳定性的控制作用,在国内外均缺少相关的研究。以冀中能源邯郸矿业集团陶一煤矿(简称陶一煤矿)充6工作面为背景,采用微地震和围岩应力动态监测相结合的实时监测方法,综合地表沉陷的测量数据,首次对超高水材料开放式充填大面积开采效果进行研究和评价。根据监测结果,在陶一煤矿充6工作面采高3 m、采深约300 m、工作面斜长120 m的条件下,工作面围岩覆岩破裂最大高度为48 m、支承压力影响范围35~40 m,工作面上方地表最大沉陷量为98 mm。结果表明,超高水材料开放式充填能够有效控制围岩破裂范围,减小采动影响,且在仰斜开采工作面运用效果较好。
超高水材料充填開採對于圍巖長期穩定性的控製作用,在國內外均缺少相關的研究。以冀中能源邯鄲礦業集糰陶一煤礦(簡稱陶一煤礦)充6工作麵為揹景,採用微地震和圍巖應力動態鑑測相結閤的實時鑑測方法,綜閤地錶沉陷的測量數據,首次對超高水材料開放式充填大麵積開採效果進行研究和評價。根據鑑測結果,在陶一煤礦充6工作麵採高3 m、採深約300 m、工作麵斜長120 m的條件下,工作麵圍巖覆巖破裂最大高度為48 m、支承壓力影響範圍35~40 m,工作麵上方地錶最大沉陷量為98 mm。結果錶明,超高水材料開放式充填能夠有效控製圍巖破裂範圍,減小採動影響,且在仰斜開採工作麵運用效果較好。
초고수재료충전개채대우위암장기은정성적공제작용,재국내외균결소상관적연구。이기중능원함단광업집단도일매광(간칭도일매광)충6공작면위배경,채용미지진화위암응력동태감측상결합적실시감측방법,종합지표침함적측량수거,수차대초고수재료개방식충전대면적개채효과진행연구화평개。근거감측결과,재도일매광충6공작면채고3 m、채심약300 m、공작면사장120 m적조건하,공작면위암복암파렬최대고도위48 m、지승압력영향범위35~40 m,공작면상방지표최대침함량위98 mm。결과표명,초고수재료개방식충전능구유효공제위암파렬범위,감소채동영향,차재앙사개채공작면운용효과교호。
The research is the first case that assessing the long-term effect of ultra high-water material backfilling method. It is based on an engineering case of the open backfilling method using ultra high-water material on working face No.6 at Taoyi coal mine. The microseismic monitoring and the stress dynamic monitoring of surrounding rock are used,in combination of the surface subsidence monitoring result,to evaluate the effect of large areal gob controlled by this certain backfilling method. According to the monitoring data,with the condition of mining height of 3 m,about mining depth 300 m,inclined length of 120 m on the working face No.6 at Taoyi coal mine,the maximum height of the overburden rock fractured zone is 48 m;the influence extent of the front abutment pressure is 35-40 m;and the maximum surface subsidence upon the working face is 98 mm. The results show that the open backfilling method with ultra high-water material controls the fractured zone of surrounding rock effectively and provides a remarkable reduction of the influence of mining activities. The backfilling method has a notable effect especially on the overhand mining working face.