CAJ | 학술논문

根据裂缝形成的微观原理,选用库伦-莫尔准则及格里菲斯准则作为岩石剪性及张性破裂判断依据,以岩石力学和断裂力学中应变能及表面能理论为基础,借助于表征单元体及裂缝平板渗流模型分别研究了三向挤压应力状态及有张应力存在情况下地应力与构造裂缝参数之间的定量关系并给出计算模型.使用该模型能够计算裂缝密度、开度、孔隙度、渗透率等参数,在渗透率的计算中体现了矢量参数的方向性差异.地应力与构造裂缝参数计算模型适用于砂岩、碳酸盐岩、火成岩等多种脆弹性岩层,与地应力场数值模拟相结合能够有效地进行储层裂缝的定量表征及裂缝参数的定量预测.
근거렬봉형성적미관원리,선용고륜-막이준칙급격리비사준칙작위암석전성급장성파렬판단의거,이암석역학화단렬역학중응변능급표면능이론위기출,차조우표정단원체급렬봉평판삼류모형분별연구료삼향제압응력상태급유장응력존재정황하지응력여구조렬봉삼수지간적정량관계병급출계산모형.사용해모형능구계산렬봉밀도、개도、공극도、삼투솔등삼수,재삼투솔적계산중체현료시량삼수적방향성차이.지응력여구조렬봉삼수계산모형괄용우사암、탄산염암、화성암등다충취탄성암층,여지응력장수치모의상결합능구유효지진행저층렬봉적정량표정급렬봉삼수적정량예측.
On the bases of strain energy, surface energy in rock and fracturing mechanics theory, the relationship between crustal stress and parameters of tectonic fracture was confirmed using the represent element volume and flat seepage model. The Coulumb-Mohr principle was applied to the examination of shear fracture, while Griffith principle was taken as the examination of tension fracture. The calculation model of the relationship between crustal stress and tectonic fracture parameter was developed and used to calculate aperture, density, porosity and permeability of fractures on the basis of paleo-fracture parameters. The calculated vector parameters such as permeability were anisotropy using this model. In combination with stress field numerical simulation, the calculation model is available to quantitave characterization of reservoir fractures and prediction of fracture parameters in the brittle-elasticity strata, such as sandstone, carbonate and igneous rocks.