To know the rupture course and rupture range , we simulated the process of rupture on the overlaying soil with soft interlayer by plane strain finite element method in this paper 摘要为了了解软夹层对基岩上覆土层破裂的影响,确定土层的破裂范围,采用平面应变有限元法,模拟了有软夹层的上覆土层在断层错动时的破裂过程。
Assessment of site conditions is necessary to ascertain suitability for the mf method . these include geological conditions , underground water table levels and overlying soil thickness , and all other relevant factors (六)多圆形潜盾隧道之施工条件探讨,对多圆形潜盾隧道工法之适用地质、覆土深度及其他限制条件需一并考量。
At present , the relic exhibition of jiaotanxia kiln of southern song guan kiln adopts the way of recovering its overall shape by earthing up , and showing its original appearance partially . visitors may enter the relic areas to appreciate its historical figure with a short distance 目前南宋官窑郊坛下窑址的遗址展示,采用了总体覆土复原,局部展示原貌的方法,参观者可进入遗址区近距离领略遗址的历史风貌。
With the degree of the exploitation of the mine resource , the upper - lying land is damaged more and more seriously , which not only damages the limited and precious land resource , but also makes the expense of the exploitation of mine land increase 随着对矿产资源开发程度的日益加深,由此而导致的开采对其上覆土地资源的破坏也日益加剧,这不但破坏了有限的珍贵土地资源,而且也使矿产资源开发的成本日益增加。
For example : edible fungus ' repeated use ; bacterial chaff ' s use in one pair of spores mushroom is make kind ; make it for livestock or fuel ; replace it with capsized earth in vegetable ' s growing seedlings ; extract hormone or agricultural chemical and so on 食用菌废料可以从以下8个方面进行重复利用:菌糠用于双孢菇制种,废料做家畜、家禽饲料,做农家肥料、燃料,做蔬菜育苗时代替覆土,提取激素和农药,废料饲养昆虫等。
The whole procedure of construction , including foundation - pit excavation , the body construction and foundation - pit filling , was simulated and analyzed by using elastic - plastic fem procedure programmed by myself . and the laws of stress field and displacement field were obtained 本文通过研编弹塑性有限元程序,模拟并分析了涵洞施工全过程(包括:基坑开挖、涵洞主体施工、基坑及上覆土体回填)中计算域土体变形和应力的变化规律。
Through shaking table test , in this paper the rule of the underground structure reaction to earthquake is summarized and the distortion of the structure and the mechanism of wreck are analyzed , especially the effect of overburden and the vertical earthquake to underground structure are studied 摘要文章通过振动台试验,总结了地下结构地震反应规律,分析地下结构的变形机制,并重点分析上覆土层和竖向荷载对地下结构动力性态的影响。
The simulation not only reflected the laws of the filling soil ' s loading and deformation when it lied in reloading state , but also the real interaction between the foundation , the culvert and the body of soil was simulated and the relationship of them was quantified 用有限元法模拟分析这种施工过程,反映了土体在不同施工阶段的应力状态,体现了土体从基坑开挖时处于卸载应力状态到基坑及上覆土体回填时土体处于再加载应力状态这一应力路径对其变形和应力的影响。
Using the finite element method ( fem ) , the simulation and analysis on this construction process were carried on , and the different stress state of soil at different construction period was rendered . and the influence of different stress paths ( foundation excavation - unloading & excavation filling - reloading ) on the stress and the displacement was also reflected and researched . the law of non - linear constitutes of soil was presented in the simulation and analysis 模拟分析再现了土体的非线性本构关系,得到了基坑开挖时土体变形和应力变化的一般规律;在基坑及上覆土体回填时,通过分层填筑的有限元模拟和地基、涵洞、土体三者相互作用的有限元分析,得到施工结束太原理工大学硕士学位论文时的位移场和应力场,同时求得涵洞的结构内力。
The explanation could rest in the differen ecological character and matablolic responses to hms . when pleurotus ostreatus , lentinus edodes , flammulina velutipes , agrocybe cylindracea were cultivated with fifth formula of substate . the study investigated the situation of cd pollution in four main producing areas in henan province when ahauicus blazei was artificially cultivated with cattle manure , straw and soil 在利用土壤、牛粪栽培巴西蘑菇时,发现菇中的镉主要来自于土壤、牛粪等辅料,说明了辅料在一定程度上决定了巴西蘑菇的富镉特性,在人工栽培时,最好用尿素、硫酸铵等氮源代替牛粪,以深层土作为覆土来降低菇中的镉含量。