TSP技术在引水隧洞超前预报中的应用

TSP技术是隧道施工中一项常用的超前地质探测技术。在隧道工程中,为了能够高效且安全地进行施工,采用TSP超前预报技术探测隧道周边及掌子面前方未开挖的岩体及其状态,为隧道施工提供更多的信息和依据,确保施工安全顺利地进行。以新疆某输水隧道工程为依托,针对TSP技术在隧道围岩地质预报中的应用进行分析,并且进行数据采集及成果编译,最后在实际开挖中揭露真实的围岩情况,验证TSP技术的准确性和可靠性,为TSP技术在实际隧道中的应用提供借鉴作用。     

毕家里隧道超前地质预报技术应用及管理

为进一步查明隧道施工前期未查明的、隐伏的重大地质问题,现代长大隧道开挖中,依据超前地质预报技术对前方岩体进行判别。从毕家里隧道超前地质预报实际出发,阐述了TSP超前地质预报在毕家里隧道中的应用,为隧道信息化施工提供了重要信息,降低了隧道施工过程中地质灾害发生的机率和危害程度,使隧道施工更安全、科学。     

超前地质预报在某岩溶隧道中的探测结果分析

隧道超前地质预报是隧道施工的一道重要工序,也是保证隧道施工安全、防灾减灾的一个重要手段。TSP203超前地质预报系统是隧道超前地质预报的先进设备,结合工程实例,分析了TSP203在岩溶隧道中的探测结果,并给出了施工的建议。     

岩溶地区长大隧道综合立体式超前地质预报技术研究

隧道施工中对隧道掌子面前方一定范围内的地质情况进行超前探测和预测预报是保证隧道施工安全的金子山隧道岩溶富水区施工中,引进了TSP203隧道地质超前预报系统、地质雷达、红外线测水仪等先进仪器进行多途径超前地质预报.针对当前物理探测存在的多解性的特点,在施工实践中逐渐形成了以中长超前物探和超前水平地质钻探验证为主,辅以短距离地质素描超前分析和施工前超长炮孔加密确认的"多阶段、多手段、多层次"的"综合立体式超前预报技术".以此技术为依托对强岩溶区富水隧道施工进行超前地质预测、预报,成功地穿越了金子山隧道进口工区岩溶富水带.     

次步隧道超前地质预报

结合工程实例,介绍了广梧高速次步隧道超前地质预报工作,从技术路线、TSP长期地质超前预报原理、取得的成果等方面进行了论述,为隧道综合超前地质预报的实施和隧道安全的保障提供了参考。     

米溪梁隧道特殊地质环境下综合超前预报研究

深埋长大隧道掘进过程中的断层、破碎带等不良地质体是导致地质灾害发生的主要诱因,地质超前预报对不良地质灾害的规避和施工安全具有重要的指导作用。针对米溪梁隧道复杂的地质条件,运用TSP、TRT探测、超前水平钻探、钻心取样、隧道内地质观测分析等方法对隧道前方围岩地质信息开展综合预测预报,为确定施工方案及合理的支护参数提供依据。经施工开挖揭示,预报效果较好,成功地保证了施工安全和质量。     

应用TSP进行的隧道超前地质预报实例分析

隧道超前地质预报对于预测围岩情况,指导隧道施工有着重要意义.通过指明隧道超前地质预报主要原理并引入工程实例,分析论证了TSP超前地质预报系统在隧道超前地质预报中应用的有效性,展示出该系统在隧道施工中的广阔应用前景.介绍了TSP系统测点布设及数据采集方法,指出了提高预报结果准确性的可行方法,并对隧道施工提出几点建议,为保...     

TSP超前预报系统在隧道施工中的应用

本文首先介绍了TSP203超前地质预报系统的工作原理及其探测方案,然后结合齐岳山隧道工程实例,介绍了TSP203超前地质预报系统的应用,通过预报掌子面前方最少200m范围内的地质情况,包括隧道前方岩性的变化、破碎带和软弱层的位置宽度、是否含水、是否存在不良地质体等,为隧道工程以及变更施工工艺提供依据,保证了施工安全、加快了工程进度,同时为隧道超前地质预报的应用积累了一些经验。     

隧道超前地质预报方法及其在过江底隧道施工中的应用

近年来,随着隧道工程的发展,隧道在施工中面临的地质灾害问题日益突出。这些问题的发生严重影响工程的进展和造价,超前地质预报由此应运而生。而过江底隧道由于其施工环境的特殊性,地质灾害问题对其影响更是不言而喻,超前地质预报在施工中的作用尤其重要,它关系着过江底隧道能否成功贯通及施工安全等各方面因素。本文首先介绍了现代隧道工程中常用的超前地质预报方法,包括TSP超前预报法及水平钻机超前探测法等14种方法。然后结合已顺利完工的广西六景郁江过江底隧道,重点介绍了TSP超前预报法及水平钻机超前探测法在喀斯特地质地貌进行过江底隧道施工中的应用。     

TSP203plus在岩溶隧道超前地质预报中的应用研究

岩溶地区隧道施工开挖过程中,常遇到溶洞、暗河、塌方、涌水等不良地质情况,为确保岩溶隧道施工安全,需对其进行超前地质预报.基于TSP203plus多次对贵州省在建高速公路某岩溶隧道的超前预报,结合勘察资料及现场实际溶洞揭露情况,总结出TSP系统在岩溶隧道的判识规律,并验证了其可行性.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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