构造应力场控矿原理及控矿规律的实验研究  

EXPERIMENTAL STUDY OF THE PRINAPLE AND REGA-LARITY GOVERNING TECTONIC STRESS CONTROL OF ORE DEPOSITS

作　　者：王成金[1] 王义强[1] 

机构地区：[1]长春地质学院

出　　处：《地质力学学报》1995年第2期28-34,共7页Journal of Geomechanics

基　　金：国家计委专项资助

摘　　要：本文从成矿构造应力场入手，研究了成矿构造应力场控矿的应变能原理及矿液运移原理，认为主应力和（σ１＋σ２）与主应力差（σ１—σ２）决定了应变能的大小和矿液运移势的高低，它们都体现了能量规律。在此基础上对矿床中经常出现的４种典型构造在不同边界条件下进行了全息光弹模拟实验，发现应变能的分布、成矿流体的运动和集中与构造应力场密切相关，应变能的高梯度区和成矿流体运移势的低值区是成矿的有利构造部位。文中还介绍了一些控矿实例。n this peper,the authors discuss the ore-bound principle of strain energy and ore solution migration under a specific tectonic stress field that prevaiced during mi neralization. It is thought that strain energy and migration potential are controlled by the sum and difference of the principal stresses(σ1+σ2),(σ1-σ2).Photoelastic experiments of four typical structures under different boundary conditions indicate that the movement and concentration of ore-forming fluid is closely related to the tectonic stress field: the ore deposits are most likely to form where the strain energy gradient is steep or the fluid migration potential is low.Some examples of the typical structures are given.

关 键 词：构造应力场 控矿原理 控矿规律 金属矿床 

分 类 号：P612[天文地球—矿床学] P618.202[天文地球—地质学]