基于分形理论的隔水性指数法对古风化壳隔水效果的评价  

Water proof effect of ancient weathering crust based on water resisting property indexes of fractal theory

作　　者：杜鑫 武强 曾一凡 庞振忠 周子博 涂坤 DU Xin;WU Qiang;ZENG Yifan;PANG Zhenzhong;ZHOU Zibo;TU Kun(National Engineering Research Center of Coal Mine Water Hazard Controlling,China University of Mining and Technology-Beijing,Beijing 100083,China;China Coal Research Institute Co.,Ltd.,China Coal Technology and Engineering Group,Beijing 100013,China;Inner Mongolia Research Institute,China University of Mining and Technology-Beijing,Ordos 017000,China)

机构地区：[1]中国矿业大学(北京)国家煤矿水害防治工程技术研究中心,北京100083 [2]中国煤炭科工集团煤炭科学研究总院有限公司,北京100013 [3]中国矿业大学(北京)内蒙古研究院,内蒙古鄂尔多斯017000

出　　处：《煤炭工程》2024年第7期136-142,共7页Coal Engineering

基　　金：国家自然科学基金项目(42072284)。

摘　　要：针对华北型煤田复杂构造区底板奥陶系灰岩岩溶水害威胁问题,目前采用的突水系数评价方法和注浆改造(加固)治理技术均未考虑奥灰顶部古风化壳的隔水性能。基于此,研究了奥灰顶部古风化壳的物性特征,在“隔水性指数法”思想指导下,提出了一种基于分形理论的隔水性指数法评价古风化壳隔水性,创建了评价流程,并以峰峰矿区南部研究区为例开展应用,结果表明:研究区古风化壳弱和较弱隔水性区呈条带状分布于井田中部和西南部,强和较强隔水性区分布于井田北部和南部边界,其他区域为中等隔水性。该方法有效减少了传统评价方法中构造要素描述的数量,更能够对断裂网络的复杂度进行定量化评价,对于华北型煤田古风化壳隔水性研究具有理论指导意义。In view of the water hazard threat of Ordovician limestone karst in the complex structure areas of the North China type coal fields,in the water bursting coefficient evaluation method and grouting reconstruction(reinforcement)treatment technology,the water resisting property of the ancient weathering crust on the Ordovician limestone roofs is not considered.Hence,we studied the physical characteristics of the ancient weathering crust on the top of the Ordovician limestone and put forward water resisting property indexes method of fractal theory to evaluate the impermeability property of paleo-weathering crust.We created an evaluation process for the application in the southern study area of Fengfeng mining area.The results show that the weak and relatively weak water resisting areas of the paleo-weathering crust in the study area are distributed in strips in the middle and southwest of the mine field.The strong and relatively strong water resisting areas are distributed in the northern and southern boundaries of the mine field,and other areas have medium water resisting property.This method can effectively reduce the number of descriptions of structural elements in the traditional evaluation methods,and can also quantitatively evaluate the complexity of fault network.It has a theoretical significance for the study of the water resisting property of the ancient weathering crust in the North China type coalfields.

关 键 词：物性特征 分形理论 隔水性指数法 古风化壳 隔水性评价 构造 

分 类 号：TD745[矿业工程—矿井通风与安全]