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出 处:《水土保持研究》2008年第1期122-124,127,共4页Research of Soil and Water Conservation
基 金:国家重点基础研究发展规划(973)项目(G1999043606)
摘 要:地下水系统的演化是在天然或人为因素影响下,以新的宏观状态取代旧的宏观状态的耗散过程。提出基于耗散结构理论研究地下水系统演化机制的新思路。地下水系统是一个复杂的开放系统,其演化过程处于非平衡有序状态且不可逆,与地下水系统相关的各子系统之间的作用是非线性的,强烈的人为因素对地下水系统演变的影响显著。华北平原中部"冀枣衡"深层地下水漏斗是人类活动强烈干扰下地下水系统异常涨落的产物。大规模超量开采地下水导致衡水市地下水动力场、水化学场和含水介质空间结构变异等问题,地下水系统进入人为活动强烈干扰下的新的演化时期。The theory of dissipative structure promotes the development of system science. The evolution of groundwater system is a dissipative process of old macroscopic state being permuted by new macroscopic state influenced by natural and human factors. The authors present the new method of studying the evolution mechanism of groundwater system based on the dissipative structure theory. The groundwater system is an opened and complicated system. The evolution process is irreversibility and in the state of non-equilibrium sequence. The interaction between the subsystems connect with groundwater system is non-linear. The high intensity human factor is important for the evolution of groundwater system. The "Ji-Zao-Heng" groundwater depression cone is the outcome of groundwater system abnormal fluctuation under the effect of high intensity human activity. The large scale overexploitation of groundwater caused the variation of groundwater dynamic field, chemical field, space structure of water-bearing medium,and so on. The groundwater system is entering the new evolution stage under the influence of human activities.
关 键 词:耗散结构理论 “冀枣衡”漏斗 人为活动 地下水系统演化
分 类 号:P641.2[天文地球—地质矿产勘探]
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