煤炭技术
煤炭技術
매탄기술
Coal Technology
2015年
11期
21-23,24
,共4页
复采%冒顶区%煤柱宽度%矿压显现%FLAC3D
複採%冒頂區%煤柱寬度%礦壓顯現%FLAC3D
복채%모정구%매주관도%광압현현%FLAC3D
residual coal mining%roof falling zone%width of coal pillar%pressure behaviors%FLAC3D
以某矿1302工作面为研究对象，采用FLAC3D模拟软件对复采工作面过冒顶区进行数值模拟实验，分析了该条件下不同宽度冒顶区边缘煤柱对复采工作面矿压显现的影响。研究结果表明，随着复采工作面推进，冒顶区边缘煤柱尺寸逐渐减小，包括冒顶区在内的采场塑性破坏区范围增大，垂直应力不断增大并向高处岩层及工作面前方运移，水平应力在上覆基岩中逐渐增大，支架矿压显现剧烈。
以某礦1302工作麵為研究對象，採用FLAC3D模擬軟件對複採工作麵過冒頂區進行數值模擬實驗，分析瞭該條件下不同寬度冒頂區邊緣煤柱對複採工作麵礦壓顯現的影響。研究結果錶明，隨著複採工作麵推進，冒頂區邊緣煤柱呎吋逐漸減小，包括冒頂區在內的採場塑性破壞區範圍增大，垂直應力不斷增大併嚮高處巖層及工作麵前方運移，水平應力在上覆基巖中逐漸增大，支架礦壓顯現劇烈。
이모광1302공작면위연구대상，채용FLAC3D모의연건대복채공작면과모정구진행수치모의실험，분석료해조건하불동관도모정구변연매주대복채공작면광압현현적영향。연구결과표명，수착복채공작면추진，모정구변연매주척촌축점감소，포괄모정구재내적채장소성파배구범위증대，수직응력불단증대병향고처암층급공작면전방운이，수평응력재상복기암중축점증대，지가광압현현극렬。
Takes the residual coal area of 1302 working face in some coal mine and after the numerical simulation experiments for the residual coal mining face is too complex cave-zone through the FLAC3D software. Results show that,with the mining working face advancing, caving zone edge coal pillar sizedecreases, the plasticity zones of stope roof fall area, including increasing thevertical stress is increasing and to high rock, to the front of the working face.migration, horizontal stress increases gradually in the overlying bedrock,support the mine pressure appearance fierce.
