摘要
基于岩溶发育的基本特征与化学示踪剂在岩溶含水介质中的运移扩散规律,提出了几种常见的示踪剂浓度分布曲线类型,并研究了它们与岩溶含水介质结构之间的对应关系。在此基础上,为了检验化学示踪技术探查岩溶发育特征的有效性和实用性,以山东丘集煤矿为例,通过地面钻孔投放示踪剂,利用井下放水孔作为示踪接收点,研究了煤层下伏奥陶系灰岩含水层隐伏岩溶的发育特征与分布规律。试验结果表明,煤矿区深部奥陶系灰岩强岩溶发育带呈现出由西北分别向东和向东南延伸的"人字"型分布规律,矿区其它区域则以相对均匀的裂隙溶隙弱岩溶发育特征为主。通过与已有水文资料对比,矿区岩溶的发育与分布与奥陶灰岩含水层钻孔涌水量大小及其分布相吻合,从而验证了该技术的实用性和有效性。
Common received tracer concentration curve types are put forth and the corresponding relation between the received tracer distributing form and the karst features is studied in the paper according to karst developing features and the chemical tracer removing and diffusing regulation in karst aquifer.On this basis,in order to test the validity and practicability of chemical tracing in detecting karst developing features,the developing and the distributing features of the hidden katst in Ordovician limestone aquifer under the coal seam of Qiuji Mine,Shandong are analyse,by putting the chemical tracer in durface drilling and receiving them from dewatering orifice under the mine.The results show,the strong-developed Ordovician deep karst which spreads out along the direction of east and southeast from the northwest Qiuji Mine shows herringbone distribution patterns.The week-developed and evenly-distributed fissure karst takes dominant place in other area of the Qiuji Mine.It is found that karst developing distribution in the mine is conform to the water inrush from drilling hole in Ordovician limestone by compare hydrological data already made,which test the applicability and effectiveness of this technology.
出处
《中国岩溶》
CAS
CSCD
2010年第2期205-211,共7页
Carsologica Sinica
基金
国家973计划项目(2006CB202205)资助
关键词
化学示踪
浓度变化曲线
深部岩溶
分布特征
chemical tracing
concentration curve
deep karst
distribution characteristics
