矿井工作面地质异常综合探测技术应用
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摘要
矿井工作面内煤层厚度变化、异常体、小构造等地质问题是煤炭回采过程中迫切需要解决的关键问题。以淮南某矿1410(1)工作面探测煤层变薄带为例,介绍了综合利用无线电波透视技术和地震槽波技术圈定煤层厚度异常区域的方法。解释结果与工作面回采揭露的煤层变薄区域进行对比,结果表明综合物探方法探测的异常区域与实际揭露的煤层变薄区域较为吻合,特别是无线电波解释的异常区域1、2、3、5与实际揭露的变薄异常区域1、2、5、6吻合较好,而地震槽波解释的1、2号异常区域与实际揭露的1、2、3号异常在位置上也较吻合,且异常区域的大小差别也较小。在该探测实例中,无线电波透视技术以吸收系数0.04作为异常边界、地震槽波以波速2200m/s作为异常边界进行解释时,其结果较为准确,且地震槽波技术分辨力较无线电波透视技术更为细致。
Issues of coal seam thickness variation,anomalous bodies and minor structures in coalmine working faces are the key problems actively demanded to be solved during coal winning.Taking the detection of coal seam thinning zone in the No.1410(1) working face in a Huainan coalmine as an example,introduced a method of integrated radio-wave penetration and in-seam seismic techniques to delineate coal thickness abnormal area.The contrast of interpreted result and the coal thinning zone revealed by working face winning has shown both are rather tally with.Especially the abnormal areas Nos.1,2,3 and 5 interpreted by radio-wave penetration tally with actually revealed thinning areas Nos.1,2,5 and 6 better;while in-seam seismic interpreted abnormal areas Nos.1 and 2 tally with practically revealed thinning areas Nos.1,2 and 3 better on location,and less area differences.In the example,when radio-wave penetration takes the absorption coefficient 0.04 as the boundary of anomaly,in-seam seismic takes well velocity 2200m/s as the boundary,the interpreted results are rather correct,while the resolution of in-seam seismic is more precise than that of radio-wave penetration.
Issues of coal seam thickness variation,anomalous bodies and minor structures in coalmine working faces are the key problems actively demanded to be solved during coal winning.Taking the detection of coal seam thinning zone in the No.1410(1) working face in a Huainan coalmine as an example,introduced a method of integrated radio-wave penetration and in-seam seismic techniques to delineate coal thickness abnormal area.The contrast of interpreted result and the coal thinning zone revealed by working face winning has shown both are rather tally with.Especially the abnormal areas Nos.1,2,3 and 5 interpreted by radio-wave penetration tally with actually revealed thinning areas Nos.1,2,5 and 6 better;while in-seam seismic interpreted abnormal areas Nos.1 and 2 tally with practically revealed thinning areas Nos.1,2 and 3 better on location,and less area differences.In the example,when radio-wave penetration takes the absorption coefficient 0.04 as the boundary of anomaly,in-seam seismic takes well velocity 2200m/s as the boundary,the interpreted results are rather correct,while the resolution of in-seam seismic is more precise than that of radio-wave penetration.
引文
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[9]王伟,高星,李松营,等.槽波层析成像方法在煤田勘探中的应用-以河南义马矿区为例[J].地球物理学报,2012,55(3):1054-1062.
[10]杨小慧,李德春,于鹏飞.煤层中瑞利型槽波的频散特性[J].物探与化探,2010,34(6):750-752.
[2]吴荣新,刘盛东,肖玉林,等.工作面无线电波透视实测场强成像分析及应用[J].岩土力学,2010,31(S1):435-440.
[3]刘焕新,王利宏,刘树才.坑透高精度CT层析成像测量方法试验研究[J].山东煤炭科技,2010,(1):103-106.
[4]高一峰.无线电波透视在煤矿中的应用[J].物探与化探,2007,31(S1):105-108.
[5]梁庆华,马晓莉,宋劲,等.复杂地质构造煤层坑道透视探测研究[J].矿业安全与环保,2010,37(1):15-17.
[6]汤友谊,陈江峰,彭立世.无线电波坑道透视构造煤的研究[J].煤炭学报,2002,27(3):254-258.
[7]刘广亮,于师建.基于质心频移的无线电波透视层析成像[J].地球物理学进展,2008,23(2):583-587.
[8]官云章,程久龙,温兴林,等.特厚煤层条件下工作面地质异常电磁波CT探测[J].山东科技大学学报(自然科学版).2002,21(6):65-67.
[9]王伟,高星,李松营,等.槽波层析成像方法在煤田勘探中的应用-以河南义马矿区为例[J].地球物理学报,2012,55(3):1054-1062.
[10]杨小慧,李德春,于鹏飞.煤层中瑞利型槽波的频散特性[J].物探与化探,2010,34(6):750-752.
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