杨柳煤矿太原组灰岩水对10煤层安全开采的影响及突水水源判别研究
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摘要
安徽淮北杨柳煤矿位于安徽省淮北市濉溪县境内,杨柳集附近是其中心位置。有许多大型断层,像南部的杨柳断层,北部有小陈家、大辛家断层,同时它们也各自控制矿井的南北边界,西部以第4勘探线和太原组一灰顶界露头线为界,而且奥灰之上的太灰共有12层,太灰总计厚度133.93m左右。在1～4灰浅部灰岩处裂隙较发育且具有不均一性,主采煤层10组煤底板灰岩含水层富水具有不均一性。灰岩含水层在断层的错动下使主采煤层10煤与太灰断距拉近,结合高压太灰水会给开采10煤造成突水威胁。因此,我们要对采煤层10煤底板灰岩含水层的富水性进行评价。
本文在查阅国内外文献、灰岩水赋存条件及其研究现状以及地下水研究方法的基础上,系统分析了灰岩水文地质条件,利用数值模拟分析井田断层的导水性,并通过模糊综合评判得出太灰水的径流极弱,最大涌水量593 m3 h,突水强度较大。对煤矿的安全生产的影响较大。最后,本文利用了两种水源判别理论,即灰色判别法和模糊判别法,对杨柳矿井突水水源判别进行了验证,表明两种水源判别方法精确度较高,杨柳煤矿在煤层开采突水的时候可以利用这两种方法对水源进行综合判别,从而为矿井防治水提供了科学依据。
Yangliu coal mine located at the Suixi county of Huaibei in Anhui province, which is next to Yangliu town.There are some larger faultages in the mining area, such as Yangliu fault, Xinchenjia normal fault, Daxinjia normal fault,which respectively control the North-south borderline of the coal mine. The exploration line No. 4 and Taiyuan mine group control the western borderline of the Yangliu coal mine,meanwhile,within the scope ordovician limestone, moreover having 12 layers Tai limestone above the Ordovician limestone, and the total thickness amounts to 133.93m. The filling cranny develop highly in No.1～4 shallow calcareous rock, which have heterogeneity. Because of the faultage moving out of original place,the calcareous rock water-bearing stratum causes the 10 main coal seam close to the Tai limestone coals, and the high-pressure Tai limestone water will cause flooding inrush threat when exploiting 10 coal seam. Therefore we must evaluate the character of calcareous rock water about the 10 main coal seam.
Based on the of consulting domestic and foreign related literatures, limestone water storage conditions and the present research situation, as well as the research technique of ground water,this paper analyzed calcareous rock hydrology geological condition systematically, draw the conclusion of Tai limestone water with very weak runoff conditions using method of the Fuzzy and comprehensive judgment. Using the water bursting coefficient theory,and make using of the numerical simulation technology and evaluating the dredging characters of mine faultage, the result that the welling up water volume amounts to 593m3/h and the flooding intensity is certain big is provided.This situation does have serious influence on safe production in coal mine. Finally, this paper has usedtwo methods of Water source judgment, which is gray and fuzzy discrimination method, then validate the discrimination method of flooding water source, as a result, this two methods have high precision. It can use these two methods to distinguish synthetically on water source in Yangliu coal mining, when flooding water occur in the coal bed mining, thus adopt prevention measure correspondingly for the mine against bursting water, so as to provide scientific basis to the coal mining.
本文在查阅国内外文献、灰岩水赋存条件及其研究现状以及地下水研究方法的基础上,系统分析了灰岩水文地质条件,利用数值模拟分析井田断层的导水性,并通过模糊综合评判得出太灰水的径流极弱,最大涌水量593 m3 h,突水强度较大。对煤矿的安全生产的影响较大。最后,本文利用了两种水源判别理论,即灰色判别法和模糊判别法,对杨柳矿井突水水源判别进行了验证,表明两种水源判别方法精确度较高,杨柳煤矿在煤层开采突水的时候可以利用这两种方法对水源进行综合判别,从而为矿井防治水提供了科学依据。
Yangliu coal mine located at the Suixi county of Huaibei in Anhui province, which is next to Yangliu town.There are some larger faultages in the mining area, such as Yangliu fault, Xinchenjia normal fault, Daxinjia normal fault,which respectively control the North-south borderline of the coal mine. The exploration line No. 4 and Taiyuan mine group control the western borderline of the Yangliu coal mine,meanwhile,within the scope ordovician limestone, moreover having 12 layers Tai limestone above the Ordovician limestone, and the total thickness amounts to 133.93m. The filling cranny develop highly in No.1～4 shallow calcareous rock, which have heterogeneity. Because of the faultage moving out of original place,the calcareous rock water-bearing stratum causes the 10 main coal seam close to the Tai limestone coals, and the high-pressure Tai limestone water will cause flooding inrush threat when exploiting 10 coal seam. Therefore we must evaluate the character of calcareous rock water about the 10 main coal seam.
Based on the of consulting domestic and foreign related literatures, limestone water storage conditions and the present research situation, as well as the research technique of ground water,this paper analyzed calcareous rock hydrology geological condition systematically, draw the conclusion of Tai limestone water with very weak runoff conditions using method of the Fuzzy and comprehensive judgment. Using the water bursting coefficient theory,and make using of the numerical simulation technology and evaluating the dredging characters of mine faultage, the result that the welling up water volume amounts to 593m3/h and the flooding intensity is certain big is provided.This situation does have serious influence on safe production in coal mine. Finally, this paper has usedtwo methods of Water source judgment, which is gray and fuzzy discrimination method, then validate the discrimination method of flooding water source, as a result, this two methods have high precision. It can use these two methods to distinguish synthetically on water source in Yangliu coal mining, when flooding water occur in the coal bed mining, thus adopt prevention measure correspondingly for the mine against bursting water, so as to provide scientific basis to the coal mining.
引文
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[12]刘明成.沈村煤矿水文地质条件及矿坑充水特性分析[J],中州煤炭,2004,(6):3-4.
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[23]黎良杰等.断层突水机理的研究[J].煤炭学报,1996, 21(2)119-123.
[24]王经明.承压水沿煤层底板递进导升突水机理的模拟与观测[J],岩土工程学报,1999, 21(5):546～549.
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[28]高延法.水压在底板突水中的力学作用[J],煤田地质与勘探,1996.
[29]张文泉,刘伟韬,张红日等.煤层底板岩层阻水能力及其影响因素的研究[J],岩土力学,1998,19(4) .
[30]王连国,宋杨.底板突水煤层的突变学特征[J],中国安全科学学报,2001, 9(5) .
[31]吴基文.杨庄煤矿六煤底板采动效应研究[J],岩土力学,2003,24(4).
[32]刘宗才.煤层底板破坏深度综合测试技术山东矿业学院学报[J].1986,l～7.
[33]庞荫恒,王良.试论井烃地区溶承压水的“原始导高”与煤层底板突水[J].矿井地质,1991,31～37.
[34]陈陆望.皖北矿区地下水水文地球化学特征研究[D].2003.
[35]桂和荣,陈陆望.皖北矿区主要突水水源水文地质特征研究[J].煤炭学报, 2004 6.
[36]Barth S R. Stable isotope geochemistry of sediment2hosted groundwater from a Late Paleozoic2early mesozoic in central Europe [J]. Journal of Hydrology , 2000 , 19 (7) : 80～81.
[37]Darling W G, Edmunds W M , Smedley PL. Isotope evidence for palaeowaters in british isles [J]. Applied Geochemistry , 1997 , 12(8) : 813～829 .
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