摘要：The stratum lithology and geological structure of the highway tunnel in the mountainous areas of western China are complex,and the engineering geological conditions are *** the highway tunnel passes through different lithological strata,its structural design and construction technology are completely diff ***,in order to support the tunnel design and construction,the tunnel survey Among them,the identifi cation of the contact boundary between magmatic rock and metamorphic rock and the grade of surrounding rock is very *** magnetotelluric survey of the Mupi tunnel of Jiuzhaigou-Mianyang highway on G8513 line,2D forward numerical simulation,1D,2D,3D inversion,and engineering geological analysis,it is revealed that the electrical characteristics of each layer,focusing on the identifi cation of the contact boundary between magmatic rock and metamorphic *** study provides the electrical characteristics of the magmatic rock and metamorphic rock contact boundary of the Mupi *** is speculated that the boundary is revealed by the tunnel construction excavation,which verifies the correctness of the geophysical inversion model and provides a more detailed design basis for the tunnel design.I believe that taking the Mupi Tunnel survey as an example,through this research,it can provide detailed geophysical evidence for highway tunnels to distinguish between magmatic rock and metamorphic rock.

摘要：A high-efficiency propeller can enable a long mission duration for autonomous underwater vehicles(AUVs).In this study,a new method with OpenProp coupled with computational fluid dynamics was developed to design a propeller for an Explorer100 *** towed system simulation of the AUV was used to measure the nominal wake,and a self-propulsion simulation was used to measure the effective wake at the disc plane just in front of a *** propellers referring to the nominal wake(propeller 1)and effective wake(propeller 2)were designed with OpenProp and appended with the AUV for self-propulsion simulations,*** the numerical simulation of the AUV self-propulsion tests,the cruising velocity of AUV was *** flow characteristics of the self-propulsion in pressure and velocity contours were also *** propeller designed with an effective wake improved the thrust,velocity,and efficiency by approximately 11.3%,6.7%,and 2.5%,respectively,as compared with those with a nominal *** cruising velocity of the final designed propeller for the Explorer100 AUV improved by 21.8%,as compared to that of the original propeller from the AUV free-running tests.

摘要：采用前-后测对照组的准实验设计,通过小学二年级的两个干预组与小学三年级的一个对照组之间的比较研究,结果表明:音标知识、音素分解、合成、删除与替换技能相整合的训练方案,以及音标知识、音素分解与合成技能相整合的训练方案,都有利于提高小学二年级学生的英语音素意识、准朗读和朗读技能;不过,训练内容相对多的前者,并没有显著地优于训练内容相对少的后者。

摘要：依据普溪河渡槽设计和DZS40/500造槽机在大跨度小截面预应力槽身混凝土施工中出现的问题,简述了渡槽现状与设计情况,分析了小截面槽身高标号混凝土配合比研究,进行了造槽机结构设计优化,以及造槽机槽身混凝土浇筑、混凝土裂缝预防、预应力结构设计与张拉方案优化,分析了社会、经济、生态环境效益。

摘要：以某引水工程征地拆迁项目为例,采用层次分析法,建立征地拆迁考核评价指标体系,分析和评价监督评估机构管理、监督评估工作策划、监督评估工作质量、征地拆迁设计变更管理、监督评估资料管理等敏感性指标。评价结果:综合评价值G=0.92,符合实际情况。

摘要：普溪河渡槽采用大跨度小截面预应力渡槽造槽机施工新型工法,为渡槽的安全施工和高效应用提供可靠的技术支撑。根据相关规范、标准以及普溪河渡槽设计、施工等特点,对造槽机的拼装工艺和预压试验等控制方法进行了研究,总结提出了DZS40/500造槽机拼装工艺和预压试验的质量控制成果。实践证明,研究成果适合普溪河渡槽的施工特点,并可在类似工程中推广应用。