矿业工程研究
礦業工程研究
광업공정연구
MINERAL ENGINEEERING RESEACH
2012年
4期
66-70
,共5页
冒落带%导水裂隙带%相似模拟%数值模拟%经验公式
冒落帶%導水裂隙帶%相似模擬%數值模擬%經驗公式
모락대%도수렬극대%상사모의%수치모의%경험공식
caving zone%permeable fracture zone%analog simulation%numerical simulation%empirical formula
为了确定工作面上覆岩层冒落带和导水裂隙带的高度，更好的指导矿井防水煤柱的留设，保证矿井安全生产，实验首先运用相似模拟理论将三维问题转化为二维平面模型，通过模拟实际开采过程，确定两带高度，并运用FLAC数值模拟软件建立莫尔库仑塑性模型，模拟顶板应力变化，同时结合经验公式对覆岩两带高度进行计算，最终综合比较得出：针对正行矿1206（1）工作面14煤上覆岩冒落带最大高度为18．5In，导水裂隙带最大高度为58．0m．
為瞭確定工作麵上覆巖層冒落帶和導水裂隙帶的高度，更好的指導礦井防水煤柱的留設，保證礦井安全生產，實驗首先運用相似模擬理論將三維問題轉化為二維平麵模型，通過模擬實際開採過程，確定兩帶高度，併運用FLAC數值模擬軟件建立莫爾庫崙塑性模型，模擬頂闆應力變化，同時結閤經驗公式對覆巖兩帶高度進行計算，最終綜閤比較得齣：針對正行礦1206（1）工作麵14煤上覆巖冒落帶最大高度為18．5In，導水裂隙帶最大高度為58．0m．
위료학정공작면상복암층모락대화도수렬극대적고도，경호적지도광정방수매주적류설，보증광정안전생산，실험수선운용상사모의이론장삼유문제전화위이유평면모형，통과모의실제개채과정，학정량대고도，병운용FLAC수치모의연건건립막이고륜소성모형，모의정판응력변화，동시결합경험공식대복암량대고도진행계산，최종종합비교득출：침대정행광1206（1）공작면14매상복암모락대최대고도위18．5In，도수렬극대최대고도위58．0m．
In order to determine the heights of the caving zone and the permeable fracture zone of the overlying strata of working face, and to select mine waterproof coal pillar properly to ensure production safety, the three dimensional object is transformed into a two -dimensional plane model by using analog simulation theory at first, then according to the simulation of the actual mining process, the heights of the "two zones" are determined. The Mohr Coulomb plastic model is established with the numerical simulation software FLAC to simulate the variation in roof stress. Meanwhile, the heights of the "two zones" of strata are figured out by empirical formula. Finally, the comprehensive comparison shows that the maximum height of the caving zone is 18.5 m and the maximum height of the permeable fracture zone is 58.0 m of the overlying strata of 1206( 1 ) working face No. 14 coal seam in Zhenghang Mine.
