深部开采地应力异常及陷落柱最小走时层析成像研究
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摘要
针对我国东部煤田深部开采中煤和瓦斯突出地应力异常及陷落柱突水预测问题,讨论了最小走时地震层析成像的基本原理和实现方法,并对地应力异常及不同的陷落柱模型进行了层析反演成像.结果表明:该方法能很好地探测异常,具有一定的理论意义和实用价值。
Aiming at the problem of forecasting coal and gas outburst and water eruption caused by karst collapse column in deep coal mining in east China,the principle and method of minimum travel-time of seismic tomography were discussed. And the model of ground stress anomaly and karst collapse columns was inversely deduced for tomography. The result shows that this method can effectively forecast the ground stress anomaly. So it is significant both theoretically and practically.
Aiming at the problem of forecasting coal and gas outburst and water eruption caused by karst collapse column in deep coal mining in east China,the principle and method of minimum travel-time of seismic tomography were discussed. And the model of ground stress anomaly and karst collapse columns was inversely deduced for tomography. The result shows that this method can effectively forecast the ground stress anomaly. So it is significant both theoretically and practically.
引文
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[2] Westman E C.地震层析成象法圈定长壁工作面前方危险带[J].庐宾译.国外煤田地质,1997,(3) :29-35．
[3] 赵爱华.各向同性与各向异性介质中地震波旅行时正演模拟与反演成像「D」.北京:中国科学院.2000．
[4] Vesn A.在不规则网格中用费马原理进行射线追踪[J].胡中平译,石油物探译丛,1997,(4) :56-69．
[5] Peteson J E, Paulsson N P, McEvilly T V.Applications of algebraic reconstruction techniques to crosshole seismic data [J]. Geophysics, 1985, 50 (10) :1556-1580．
[6] Lo T W, Toksoz M N, Xu S H, et al. Ultrasonic laboratory tests of geophysical tomographic reconstruction[J]. Geophysics, 1988, 53 (7) : 947-956．
[7] 程久龙,于师建,宋扬,等.煤层底板破坏深度的声波CT探测试验研究[J].煤炭学报,1999,24(6) :576-580．
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