The biggest fissure permeability tensor of the basalt is larger than that of the Tertiary, while the largest dip angle of the main axis of the basaltic fracture is smaller. 玄武岩裂隙最大渗透张量比第三系大,而最大主轴倾角则比第三系小;
In the peripheral areas of Beijing, deep groundwater resources are mostly exploited from fractured shatter zones or karst fissures, and dolomite karst fissure water of Jixian System serves as the main geothermal resource. The fracture structure type underground hot water has been relatively rarely exploited. 北京市周边地区利用的深部地下水资源大多采自断裂构造破碎带或岩溶裂隙,地热资源主要开发蓟县系白云岩岩溶裂隙水,断裂构造型地下热水开发的相对较少。
Because the process of rock broken is very complicated, there is a difference between the experimental data and theoretical result of expanding fissure by the present dynamic fracture theory. 由于岩石破碎过程非常复杂的,采用当前的动态断裂理论得出的裂纹扩展长度与实测值差异较大。
This paper discusses the hydrocarbon conduit systems such as fault and structural fissure, unconformity and paleo-weathering crust, Ordovician vug and fracture as well as interconnected sand body in light of Tahe oilfield and its regional geological situations. 根据塔河油田及其区域地质情况,论述了断层及构造裂隙,不整合面和古风化壳,奥陶系孔、洞、缝和连通砂体四类输导系统。
The pore-water pressure σ p reduces the mormal stress on the fissure of rock, hence causes sliding fracture which formerly remained in stable status. 孔隙水压σp降低了岩体断裂面上的正应力,使原处于稳定状态的断裂发生滑移破裂。
The mechanical property of N80 steel has increased obviously after adding corrosion inhibitor, where the ductility of N80 steel increased, and crack fissure of fracture surface decrease. 添加缓蚀剂后使N80试样的韧性有明显的增加,断口裂纹缝隙明显减小,力学性能有了明显的提高。
Through grouting experiments in a single fissure and fracture networks, the basic law controlling the grouting seepage through rock mass is analyzed, and the factors which may affect the process are also discussed. 通过单一裂隙岩体和裂隙网络岩体注浆渗流模拟实验,分析和总结了裂隙岩体注浆渗流中的一般规律,并讨论了影响注浆渗流工程的各种因素。
Finally, some problems needed for further study are put forward, including the regularity of fissure deformation and fracture under shear loads, the influences of shear loads on fissure permeability under different normal loads, constitutive relationship of fissured rock mass, etc. 指出了需要进一步研究的问题:剪切荷载作用下裂隙变形和破坏规律;不同法向荷载作用下剪切荷载对裂隙渗透性的影响;
The main geothermal reservoirs are reservoir of karst fissure of Cambrian-Ordovician, reservoir of pore and fracture of Cenozoic, and fracture reservoir of granite and metamorphic. The cap rocks are quaternary loose soil and deposition after Paleozoic Era. 热储层主要有寒武-奥陶系岩溶裂隙热储、新生界孔隙-裂隙热储以及花岗岩-变质岩裂隙热储,盖层主要有第四系松散沉积物和古生代以后沉积的地层。
Rock mass is discontinuous because of the movement and development of the crust. The joint, fissure, fault fracture are the typical modes of this discontinuation. 岩体介质由于地壳的不断运动、发展,呈现出显著的不连续性,存在大量的节理、裂隙等不连续界面。