MSP技术在任楼煤矿巷道超前探测中的应用
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摘要
煤矿巷道中的断层、陷落柱和煤岩体结构破碎带等不良地质条件不但影响掘进施工,同时也存在突水、瓦斯突出等安全隐患。断层、陷落柱等地质异常构造与围岩在密度、速度等物性方面存在较大差异,因此可利用多波多分量地震反射法探测煤矿井下异常构造。近两年来,任楼煤矿针对矿井巷道前方的未知隐伏构造做了多次MSP震波超前探测。以Ⅱ7322机巷为例,在巷道j19点前76m处,分别于巷道的左帮及右帮对迎头前方进行了两次超前探查,2次探测解释的2个异常界面位置分别为82m、101m和85m、102m,实际揭露2个断层位置为82m、109m,探测结果与实际基本相符,实现了对掘进巷道内地质构造带的准确超前预测预报。
The adverse geologic conditions of fault,subsided column,coal and rock masses structural fracture zone may exist in coalmine roadways driving not only can impact driving operation,but also have potential water and gas bursting safety hazards existed.Usually larger physical property differences of density,velocity etc have existed between fault,subsided column etc abnormal geological structures and country rocks,thus can use multiwave,multicomponent seismic reflection methods to detect coalmine underground abnormal structures.In recent two years,the Renlou coalmine has carried out multiple MSP seismic wave advance detection aimed at roadway front undiscovered structures.Taking the II7322 mechanized roadway as an example,at 76m directly ahead of roadway j19 point,two advance detections have been carried out on left and right walls respectively.Positions of two interpreted anomalous interfaces are 82m,101m and 85m,102m respectively;positions of two actually revealed faults are 82m,109m basically accord with detection result,thus realized correct advance prediction of geologic structural belt within driving roadway.
The adverse geologic conditions of fault,subsided column,coal and rock masses structural fracture zone may exist in coalmine roadways driving not only can impact driving operation,but also have potential water and gas bursting safety hazards existed.Usually larger physical property differences of density,velocity etc have existed between fault,subsided column etc abnormal geological structures and country rocks,thus can use multiwave,multicomponent seismic reflection methods to detect coalmine underground abnormal structures.In recent two years,the Renlou coalmine has carried out multiple MSP seismic wave advance detection aimed at roadway front undiscovered structures.Taking the II7322 mechanized roadway as an example,at 76m directly ahead of roadway j19 point,two advance detections have been carried out on left and right walls respectively.Positions of two interpreted anomalous interfaces are 82m,101m and 85m,102m respectively;positions of two actually revealed faults are 82m,109m basically accord with detection result,thus realized correct advance prediction of geologic structural belt within driving roadway.
引文
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[4]刘盛东.巷道前方地质构造MSP法超前探测技术与应用研究[J].工程地球物理学报,2006,3(6):437-442.
[5]郭立全,刘盛东.巷道构造震波超前探测技术及其应用[J].煤炭科学技术,2008,36(11):99-102.
[6]刘盛东,张平松.矿井构造与瓦斯的震波超前探测技术应用分析[J].煤炭科学技术2005,33(1):39-41.
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