本文主要研究内容
作者李超峰,虎维岳,刘英锋(2019)在《洛河组含水层垂向差异性研究及保水采煤意义》一文中研究指出:为查明彬长矿区白垩系洛河组地层的水文地质条件,从保水采煤角度提出了洛河组精细化勘探概念,给出了可用于承压含水层垂向富水性评价的综合富水性指数法,依据垂向富水性变化规律对洛河组进行分层,并研究洛河组垂向水文地质条件与特征、自然状态和采煤扰动时洛河组垂向各含水层段之间的水力联系、以及洛河组下段存在的保水采煤意义等。给出了富水性指数计算方法:对地层岩性、厚度、孔隙度3个指标分别赋值、分别赋权重为0.3,0.4,0.3,之后将赋值与权重累积得到单个含水层段的富水性指数(fi),利用Fi=0.5fi+0.15fi-1+0.1fi-2+0.15fi+1+0.1fi+2计算各地层的综合富水性指数。给出了洛河组含水层垂向富水性分级标准:F<0.003 289为隔水层,0.003 289≤F<0.012 339为弱富水,0.012 339≤F<0.015 504为中等富水,F≥0.015 504为强富水。依据综合富水性指数将高家堡井田T1,T2钻孔洛河组垂向上划分为上、中、下3段。研究结果表明:(1)采用综合富水性指数法可以对承压含水层垂向富水性进行精细化评价,可操作性强;(2)局部地区洛河组内部发育有泥岩地层,但尚未构成区域上的隔水层;(3)洛河组下段地层既可以减缓和阻止煤层顶板导水裂隙带继续向上发育防止对具有供水意义的中上段地层结构的破坏,又可以阻隔中上段含水层水进入矿井,对保水采煤有利;(4)高家堡矿井首采面回采期间洛河组中上段地下水位下降26.71~43.06 m。通过含水层水量、水位、水质等指标分析,采用控制煤层采高等技术实现了对洛河组含水层结构保护条件下的深埋煤层开采。
Abstract
wei cha ming bin chang kuang ou bai e ji luo he zu de ceng de shui wen de zhi tiao jian ,cong bao shui cai mei jiao du di chu le luo he zu jing xi hua kan tan gai nian ,gei chu le ke yong yu cheng ya han shui ceng chui xiang fu shui xing ping jia de zeng ge fu shui xing zhi shu fa ,yi ju chui xiang fu shui xing bian hua gui lv dui luo he zu jin hang fen ceng ,bing yan jiu luo he zu chui xiang shui wen de zhi tiao jian yu te zheng 、zi ran zhuang tai he cai mei rao dong shi luo he zu chui xiang ge han shui ceng duan zhi jian de shui li lian ji 、yi ji luo he zu xia duan cun zai de bao shui cai mei yi yi deng 。gei chu le fu shui xing zhi shu ji suan fang fa :dui de ceng yan xing 、hou du 、kong xi du 3ge zhi biao fen bie fu zhi 、fen bie fu quan chong wei 0.3,0.4,0.3,zhi hou jiang fu zhi yu quan chong lei ji de dao chan ge han shui ceng duan de fu shui xing zhi shu (fi),li yong Fi=0.5fi+0.15fi-1+0.1fi-2+0.15fi+1+0.1fi+2ji suan ge de ceng de zeng ge fu shui xing zhi shu 。gei chu le luo he zu han shui ceng chui xiang fu shui xing fen ji biao zhun :F<0.003 289wei ge shui ceng ,0.003 289≤F<0.012 339wei ruo fu shui ,0.012 339≤F<0.015 504wei zhong deng fu shui ,F≥0.015 504wei jiang fu shui 。yi ju zeng ge fu shui xing zhi shu jiang gao jia bao jing tian T1,T2zuan kong luo he zu chui xiang shang hua fen wei shang 、zhong 、xia 3duan 。yan jiu jie guo biao ming :(1)cai yong zeng ge fu shui xing zhi shu fa ke yi dui cheng ya han shui ceng chui xiang fu shui xing jin hang jing xi hua ping jia ,ke cao zuo xing jiang ;(2)ju bu de ou luo he zu nei bu fa yo you ni yan de ceng ,dan shang wei gou cheng ou yu shang de ge shui ceng ;(3)luo he zu xia duan de ceng ji ke yi jian huan he zu zhi mei ceng ding ban dao shui lie xi dai ji xu xiang shang fa yo fang zhi dui ju you gong shui yi yi de zhong shang duan de ceng jie gou de po huai ,you ke yi zu ge zhong shang duan han shui ceng shui jin ru kuang jing ,dui bao shui cai mei you li ;(4)gao jia bao kuang jing shou cai mian hui cai ji jian luo he zu zhong shang duan de xia shui wei xia jiang 26.71~43.06 m。tong guo han shui ceng shui liang 、shui wei 、shui zhi deng zhi biao fen xi ,cai yong kong zhi mei ceng cai gao deng ji shu shi xian le dui luo he zu han shui ceng jie gou bao hu tiao jian xia de shen mai mei ceng kai cai 。
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论文作者分别是来自煤炭学报的李超峰,虎维岳,刘英锋,发表于刊物煤炭学报2019年03期论文,是一篇关于保水采煤论文,洛河组论文,分层论文,垂向富水性论文,富水性指数论文,彬长矿区论文,煤炭学报2019年03期论文的文章。本文可供学术参考使用,各位学者可以免费参考阅读下载,文章观点不代表本站观点,资料来自煤炭学报2019年03期论文网站,若本站收录的文献无意侵犯了您的著作版权,请联系我们删除。
标签:保水采煤论文; 洛河组论文; 分层论文; 垂向富水性论文; 富水性指数论文; 彬长矿区论文; 煤炭学报2019年03期论文;