水利水电工程坝基灌浆统一模型与分析理论及应用

发布时间：2018-06-03 12:24

本文选题：灌浆工程 + 灌浆统一模型　；参考：《天津大学》2014年博士论文

【摘要】：灌浆作为大坝坝基加固的重要手段，其不仅可以改善坝基的性能，提高坝基的整体性，并能有效的降低坝基的渗透性，是解决坝基渗透稳定、不均匀沉降和深层抗滑稳定等问题的重要工程措施。然而目前的坝基灌浆工程面临着灌浆孔的地质条件难以预测、灌浆施工过程难以控制、施工工艺复杂、海量的灌浆数据如何及时有效整理、灌浆效果如何全面的评价以及缺乏一个综合管理平台等关键性问题。如何解决这些问题，成为目前灌浆工程的挑战，本文就上述问题展开深入的研究分析，并取得了以下创新性研究成果：（1）提出了水利水电工程灌浆统一模型数学模型和建模理论与方法针对灌浆工程对灌浆孔地质信息认识不足的问题以及目前的三维建模研究成果并不能真正应用到实际灌浆工程中的现状；本文结合灌浆工程的特点，提出了灌浆统一模型数学模型，并依据各类模型建模方法所需原始数据的类型，对数据源进行了有效的分类分析，最终实现各类数据源的有效解析和空间三维耦合；同时，在此基础上提出灌浆工程多尺度建模理论和方法，分别建立了大尺度地质体模型、中尺度灌浆孔模型、小尺度裂隙模型和灌浆辅助建筑物模型，通过数学模型中的耦合算子，有效的表达了各类模型的三维空间耦合关系，从而为基于灌浆统一模型的灌浆孔地质条件预测等分析控制方法提供了必要的理论支撑。（2）提出了水利水电工程灌浆施工数据实时采集与监控分析方法针对实际灌浆工程施工过程难以控制的问题以及目前的实时控制方法只限于施工现场，其难以满足实际工程对施工过程远程实时监控的需求；本文从灌浆工程施工过程的数据采集、监控和动态整理的角度出发，建立了灌浆施工数据实时采集与集成方法、灌浆施工实时监控与报警方法和灌浆数据动态整理与分析方法；在此基础上，进一步研究了灌浆施工过程监测网络组建技术、Web环境下文件接口上传及unity插件技术、灌浆报警类型及判定标准分析方法、灌浆报警分析模型和灌浆数据动态整理与分析技术。上述方法的实现有效地保证灌浆工程师对整个灌浆施工过程的远程监控、实时地获取灌浆异常报警信息，而且可以及时地掌握各施工单元的灌浆成果数据，从而保证了整个灌浆始终处于受控状态。（3）基于灌浆统一模型及实时监控技术的分析方法研究由于灌浆工程为地下隐蔽工程，所以对灌浆孔地质条件的准确预测对灌浆分析控制十分重要；然而目前的分析方法只是结合二维地质剖面对灌浆孔的地质信息进行分析，其影响了分析结果的准确性；进一步这些方法并没有与实时的灌浆数据相结合进行分析，这也限制了这些方法在实际工程的应用。本文结合灌浆统一模型与实时监控技术，通过耦合灌浆数据、三维地质模型和灌浆孔模型，实现了对灌浆孔地质条件的预测，并在此基础上提出了灌浆工程复杂地质信息预报分析方法、灌浆工程岩体抬动控制分析方法、灌浆工程灌浆参数可视化分析方法、灌浆工程岩体可灌性分析方法以及基于遗传神经网络的单位注灰量预测分析方法；上述分析方法有效地降低了灌浆工程对地质条件认识的盲目性，减少了实际灌浆工程的抬动发生，为灌浆工程师优化灌浆孔的布置，调整灌浆孔的施工工艺提供必要的技术支持，从而也保证了整个灌浆工程的质量。（4）基于模糊综合评价法的灌浆效果评价模型研究目前实际灌浆工程的帷幕灌浆效果评价方法，是将检查孔的压水试验透水率作为唯一的评价指标，然而灌浆是否有效地对岩体的裂隙进行了填充以及岩体的完整性是否通过灌浆得到了提高，目前的评价方法并没有体现；这将给工程蓄水后坝基渗控问题带来很大的隐患。因此，提出了基于模糊综合评价法的灌浆效果评价模型，，该模型同时考虑了压水试验透水率、裂隙的水泥填充率、岩体的RQD值等三个方面因素的综合影响，建立了基于模糊综合评价法的灌浆效果评价模型。比较传统的压水试验单因素评价方法，本文建立的模型综合反映了灌后岩体的透水性、裂隙的水泥填充情况以及岩体的完整性，其评价结果更为全面合理，也为后续灌浆施工提供了更为可靠的依据。（5）建立水利水电工程灌浆施工实时监控与灌浆统一模型分析系统针对灌浆工程缺乏一个包含各阶段信息的三维综合管理平台以及目前的系统多为二维角度的分析整理，并且其主要是灌浆施工阶段信息集成，对于地质信息、设计信息、灌后检查信息以及材料核销等信息综合集成鲜有研究的现状，本文结合实际灌浆工程的需要和实时监控与灌浆统一模型理论和方法，采用数据库技术、计算机图形处理技术、面向对象技术和三维可视化技术，自主研发了基于B/S结构的水利水电工程灌浆施工实时监控与灌浆统一模型分析系统，系统从三维的角度为工程管理人员提供了灌浆各阶段控制分析平台。以我国西南金沙江下游某水电站为例，将上述的研究成果的理论、方法、技术和系统应用到实际工程中，实践表明本文的研究的内容，有效地保证灌浆工程的质量和进度，甚至对整个工程的长期渗控稳定运行起到了重要的作用。
[Abstract]:As an important means of strengthening the dam foundation, grouting can not only improve the performance of the dam foundation, improve the integrity of the dam foundation, and effectively reduce the permeability of the dam foundation. It is an important engineering measure to solve the seepage stability of the dam foundation, the uneven settlement and the stability of the deep anti sliding and so on. It is difficult to predict the geological conditions, the grouting construction process is difficult to control, the construction process is complex, the mass grouting data is timely and effective, how to comprehensively evaluate the effect of the grouting effect and the lack of a comprehensive management platform. How to solve these problems has become the challenge of the grouting project before the eye. The following research results are obtained:
(1) put forward the mathematical model and modeling theory and method of grouting unified model for water conservancy and hydropower projects.
The problem of insufficient understanding of grouting hole geological information in grouting engineering and the present research results of three dimensional modeling can not be applied to actual grouting engineering. In this paper, a mathematical model of unified grouting model is put forward in combination with the characteristics of grouting engineering, and the type of original data required by various model modeling methods is based on the type of the original data. The data sources are effectively classified and analyzed. Finally, the effective analysis of various data sources and three-dimensional coupling are realized. At the same time, the multi-scale modeling theory and method of grouting engineering are put forward, and the large scale geological body model, the mesoscale grouting hole model, the small scale fracture model and the grouting auxiliary building model are established respectively. The coupling operator in the mathematical model effectively expresses the three-dimensional spatial coupling relationship of various models, thus providing the necessary theoretical support for the analysis and control method of the grouting hole geological condition prediction based on the unified grouting model.
(2) proposed real-time data acquisition and monitoring analysis method for water conservancy and hydropower project grouting construction.
In view of the problems that are difficult to control in the construction process of the actual grouting engineering and the current real time control methods are only limited to the construction site, it is difficult to meet the needs of the actual project for remote real-time monitoring of the construction process. In this paper, the grouting construction data is set up from the angle of data collection, monitoring and dynamic adjustment of the construction process of the grouting project. The method of real-time collection and integration, the method of real-time monitoring and alarm of grouting and the dynamic sorting and analysis of grouting data. On this basis, the construction technology of monitoring network for grouting construction, file interface uploading and unity plug-in technology under Web environment, analysis method of grouting alarm type and judgment standard, grouting alarm The analysis model and the dynamic sorting and analysis technology of the grouting data can effectively ensure the grouting engineer's remote monitoring of the whole grouting construction process, obtain the abnormal alarm information of the grouting in real time, and can grasp the data of the grouting results in time, so that the whole grouting is always in the control. State.
(3) analysis method based on grouting unified model and real-time monitoring technology.
Because the grouting engineering is the underground concealed project, the accurate prediction of the geological conditions of the grouting hole is very important to the grouting analysis and control. However, the present analysis method is only combined with the analysis of the geological information of the grouting hole combined with the two-dimensional geological section, which affects the accuracy of the analysis results; further these methods are not in real time. The grouting data are combined to carry out analysis, which also restricts the application of these methods in practical engineering. This paper, combining the unified grouting model and real-time monitoring technology, realizes the prediction of the geological conditions of the grouting hole through the coupling grouting data, the three-dimensional geological model and the grouting hole model. On this basis, the complex geological letter of the grouting project is put forward. The analysis method of interest prediction, the analysis method of rock mass lift control in grouting engineering, the visualization analysis method of grouting parameters for grouting engineering, the grouting analysis method of grouting engineering rock mass and the method of prediction and analysis of unit water injection quantity based on genetic neural network, and the above analysis method effectively reduce the blindness of geological conditions in the grouting engineering. It reduces the lifting of the actual grouting engineering, provides the necessary technical support for the grouting engineer to optimize the layout of the grouting hole, and adjusts the construction technology of the grouting hole, thus ensuring the quality of the whole grouting project.
(4) research on evaluation model of grouting effect based on fuzzy comprehensive evaluation method
At present, the evaluation method of curtain grouting effect of actual grouting project is the only evaluation index of the water pressure test permeability of the inspection hole. However, whether the grouting is effective to fill the cracks in the rock mass and whether the integrity of the rock mass has been improved through grouting, and the present evaluation method is not reflected. This will give the project a project. After the water storage, the seepage control problem of the dam foundation has brought great hidden danger. Therefore, the grouting effect evaluation model based on the fuzzy comprehensive evaluation method is put forward, which takes into account the comprehensive influence of three factors, such as the permeability of water test, the filling rate of the fracture cement, the RQD value of the rock mass, and the grouting effect evaluation based on the fuzzy comprehensive evaluation method. Compared with the traditional single factor evaluation method of water pressure test, the model established in this paper reflects the permeability of the rock mass, the filling of cement and the integrity of the rock mass. The evaluation results are more comprehensive and reasonable, and provide a more reliable basis for the follow-up grouting construction.
(5) establish a unified model analysis system for real-time monitoring and grouting in water conservancy and hydropower projects.
There is a lack of a three dimensional comprehensive management platform containing information of various stages and the analysis and arrangement of the current system for two dimensional angles, and it is mainly the information integration of the grouting construction stage, and the present situation of comprehensive information integration of geological information, design information, post irrigation inspection information and material nuclear pin is rarely studied. Combining the needs of actual grouting engineering and the theory and method of real-time monitoring and grouting unified model, using database technology, computer graphics processing technology, object oriented technology and three-dimensional visualization technology, the unified model analysis system of grouting construction real-time monitoring and grouting based on B/S structure is independently developed. The system is from three From the perspective of dimensionality, the control analysis platform for each stage of grouting is provided for engineering managers.
Taking a hydropower station in the lower reaches of Jinsha River in the southwest of China as an example, the theory, method, technology and system of the above research results are applied to the actual project. The practice shows the content of this study, which effectively ensures the quality and progress of the grouting engineering, and even plays an important role in the long-term seepage control and stable operation of the whole project.
【学位授予单位】：天津大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TV543

【参考文献】