CAJ | 학술논문

在地质构造分析和岩石力学性质测试的基础上，进行了临汾区块的地应力有限元三维数值模拟研究，探讨了地应力在区域和层域上的分布规律及其对区内煤层气成藏的影响。研究表明，应力强度总体上随深度递增，断层对应力强度分布具有明显的影响；断层附近应力强度的最大值分布在断层与断层的交叉点、断层与底部硬质岩层界面附近，应力性质在断层夹块内和支断层一侧发生转变出现拉应力区，断层与地表的交点附近也呈现局部拉应力区；煤层软弱带呈现应力降低。研究区的地应力分布特征有利于煤层气从深部向浅部运移，并在背斜轴部相对富集。
재지질구조분석화암석역학성질측시적기출상，진행료림분구괴적지응력유한원삼유수치모의연구，탐토료지응력재구역화층역상적분포규률급기대구내매층기성장적영향。연구표명，응력강도총체상수심도체증，단층대응력강도분포구유명현적영향；단층부근응력강도적최대치분포재단층여단층적교차점、단층여저부경질암층계면부근，응력성질재단층협괴내화지단층일측발생전변출현랍응력구，단층여지표적교점부근야정현국부랍응력구；매층연약대정현응력강저。연구구적지응력분포특정유리우매층기종심부향천부운이，병재배사축부상대부집。
Based on geologic structure analysis and rock mechanical property tests, carried out in-situ stress finite element 3D numeri-cal simulation study in the Linfen block, and discussed regional and hierarchical domain distribution pattern of in-situ stress and its im-pact on CBM reservoiring in the area. The study has shown that the stress intensity progressively increasing along with the depth deepen-ing as a whole, and obviously impacted by faults. The maximum stress intensity near faults usually distributed at the crossing of faults, interfaces between fault and basal part hard rocks. Stress property has changed in tensile zones of fault sandwiches and distributive fault side, also local zones near intersection between fault and surface;in coal seam weak zone presents lowering stress. The stress distribu-tion pattern is propitious to CBM migration from deep part to shallow, and relatively enriched at anticline axis.