CN111562289B - A kind of mud solidification in-situ test method - Google Patents
A kind of mud solidification in-situ test methodDownload PDFInfo
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- CN111562289B CN111562289BCN202010649012.2ACN202010649012ACN111562289BCN 111562289 BCN111562289 BCN 111562289BCN 202010649012 ACN202010649012 ACN 202010649012ACN 111562289 BCN111562289 BCN 111562289B
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及淤泥固化检测领域，具体涉及一种淤泥固化原位测试方法，该方法应用于河流湖泊和港口航道等疏浚清淤工作中淤泥固化状态原位检测的测点布置。The invention relates to the field of silt solidification detection, in particular to an in-situ testing method of silt solidification, which is applied to the arrangement of measuring points for in-situ detection of silt solidification state in dredging and dredging of rivers, lakes and port channels.
背景技术Background technique
目前，国内多个城市正在围绕河流或湖泊进行疏浚治理改善水环境。但受市内环境限制，这些疏浚工程多为清淤船疏浚、管道输送很长距离至一定区域后堆放，自然沉淀干化。不仅占地面积大，处理周期长，还带来污染转移等风险。由此，河流湖泊污染淤泥疏浚和泥浆深度脱水固化处理技术，将会在后期的水环境治理工程中有很好的应用前景。如何检测淤泥固化土的固化状态，以保证固化淤泥拥有良好的物理指标，成为了目前的一个研究方向。At present, many cities in China are carrying out dredging treatment around rivers or lakes to improve the water environment. However, due to the limitation of the urban environment, most of these dredging projects are dredging by dredging ships, and pipelines are transported for a long distance to a certain area before stacking, and natural sedimentation and drying. It not only occupies a large area, but also has a long processing cycle, and also brings risks such as pollution transfer. As a result, the technology of dredging polluted sludge in rivers and lakes and the deep dehydration and solidification treatment technology of sludge will have good application prospects in the later water environment treatment projects. How to detect the solidification state of silt-solidified soil to ensure that the solidified silt has good physical indicators has become a current research direction.
现有的淤泥固化检测原则要求，一般是以按照固化土7d、14d、28d龄期进行各项指标检测。如果是室内测试，一般测试指标有含水率与无侧限抗压强度，与设计指标要求相比，判断其固化状态。如果是原位测试，多采用静力触探、十字板剪切、动态平板荷载试验，检测固化土在静力、扰动和荷载3种工况下的力学特性，综合判断淤泥土固化效果是否满足设计指标。由于十字板剪切试验对场地内土体破坏较大，现有的原位淤泥固化检测水平面上的测点数量大概为2-3个测点，一次测量只能测量一个深度的淤泥固化状态。The existing principles of silt solidification detection generally require the detection of various indicators according to the 7d, 14d, and 28d age of the solidified soil. If it is an indoor test, the general test indicators include moisture content and unconfined compressive strength. Compared with the design indicators, the curing state is judged. If it is an in-situ test, static penetration, cross plate shearing, and dynamic plate load testing are often used to detect the mechanical properties of the solidified soil under three conditions of static, disturbance and load, and comprehensively judge whether the solidification effect of the silt soil is satisfactory. Design specifications. Due to the large damage to the soil in the site by the cross plate shear test, the number of measuring points on the existing in-situ silt solidification detection level is about 2-3 measuring points, and one measurement can only measure the silt solidification state of one depth.
而原位测试技术，其优点在于，可以综合判定，淤泥固化土的各项力学指标，较为科学，但缺点在于单一测点只能测量某一深度的固化程度，且测点数量受测试仪器限制，不宜布置过多。亟需研发能现场原位实时感知固化土固化性态的原位检测方法，以及能够感知任意深度处处置效果的检测方法。The advantage of in-situ testing technology is that it can comprehensively determine the mechanical indicators of silt-solidified soil, which is relatively scientific, but the disadvantage is that a single measuring point can only measure the degree of solidification at a certain depth, and the number of measuring points is limited by the testing equipment , it is not advisable to arrange too much. There is an urgent need to develop an in-situ detection method that can sense the solidification state of solidified soil in real-time on-site, and a detection method that can sense the treatment effect at any depth.
发明内容SUMMARY OF THE INVENTION
针对上述问题，本发明的目的在于,提供一种可满足原位实时感知固化土任意深度处处置效果的取样要求的淤泥固化土测点测试方法。具体技术方案如下：In view of the above problems, the purpose of the present invention is to provide a method for measuring points of silt solidified soil that can meet the sampling requirements of in-situ real-time perception of the treatment effect at any depth of the solidified soil. The specific technical solutions are as follows:
一种淤泥固化原位测试方法，其特征在于：在淤泥原位多点并联布置压电固化土测点，所述压电固化土测点在竖向深度内等间距分布，并通过导电固化土将测点与数据采集器连接。An in-situ testing method for silt solidification, which is characterized in that: piezoelectric solidified soil measuring points are arranged in parallel at multiple points in the silt in situ, the piezoelectric solidified soil measuring points are distributed at equal intervals in the vertical depth, and the solidified soil is cured by conducting electricity. Connect the measuring point to the data collector.
所述测点由压电固化土、超弹橡胶薄膜套、网状模具、塑料软管、导电固化土组成；所述超弹橡胶薄膜套置于网状模具中；所述塑料软管下端与超弹性橡胶薄膜套口连接；所述压电固化土通过塑料软管上端注入超弹性橡胶薄膜套中，所述压电固化土与外界土体含水率一致；在将压电固化土注入测点的超弹性橡胶薄膜套中后，继续通过塑料软管注入导电固化土，直至塑料软管溢满，然后将压电固化土测点埋入淤泥原位，其中塑料软管上端伸到地面上；The measuring point is composed of piezoelectric solidified soil, superelastic rubber film sleeve, reticulated mold, plastic hose, and conductive solidified soil; the superelastic rubber film sleeve is placed in the reticulated mold; the lower end of the plastic hose is The superelastic rubber film sleeve is connected; the piezoelectric solidified soil is injected into the superelastic rubber film sleeve through the upper end of the plastic hose, and the piezoelectric solidified soil is consistent with the moisture content of the external soil; after the piezoelectric solidified soil is injected into the measuring point After the super-elastic rubber film is sheathed, continue to inject conductive solidified soil through the plastic hose until the plastic hose is overflowing, and then bury the piezoelectric solidified soil measuring point in the silt in situ, and the upper end of the plastic hose extends to the ground;
测量时，在塑料软管上端的导电固化土内插入电极，电极上连上导线并将导线引出与数据采集器连接。During measurement, an electrode is inserted into the conductive solidified soil at the upper end of the plastic hose, a wire is connected to the electrode, and the wire is drawn out to connect to the data collector.
进一步地，所述压电固化土由原位淤泥与自感知淤泥固化剂固化组成，导电固化土由原位淤泥与导电固化剂组成。Further, the piezoelectric solidified soil is composed of in-situ sludge and self-sensing sludge curing agent, and the conductive solidified soil is composed of in-situ sludge and conductive curing agent.
进一步地，所述自感知淤泥固化剂由水泥、粉煤灰、压电陶瓷颗粒和导电介质按照体积比32:18:40:10的配比混合，导电固化剂由水泥、粉煤灰、砂和导电介质按照体积比32:18:40:10的配比混合。水泥及粉煤灰为普通硅酸盐水泥及普通粉煤灰，无特殊要求；压电陶瓷颗粒为PZT（锆钛酸铅）颗粒，粒径大小需控制在5mm-10mm之内；导电介质颗粒为乙炔炭黑，粒径大小需控制在1mm-5mm之内。Further, the self-sensing sludge curing agent is mixed by cement, fly ash, piezoelectric ceramic particles and conductive medium in a volume ratio of 32:18:40:10, and the conductive curing agent is composed of cement, fly ash, sand It is mixed with the conductive medium according to the volume ratio of 32:18:40:10. Cement and fly ash are ordinary Portland cement and ordinary fly ash, no special requirements; piezoelectric ceramic particles are PZT (lead zirconate titanate) particles, and the particle size needs to be controlled within 5mm-10mm; conductive medium particles For acetylene carbon black, the particle size should be controlled within 1mm-5mm.
进一步地，所述压电固化土测点的形状为圆柱体或正方体。Further, the shape of the piezoelectric solidified soil measuring point is a cylinder or a cube.
进一步地，在超弹性橡胶薄膜套表面设有多个微小孔洞，孔洞直径小于淤泥颗粒粒径，大于水分子直径，保证压电固化土与外界土体含水率一致。Further, a plurality of tiny holes are arranged on the surface of the superelastic rubber film cover, and the diameter of the holes is smaller than the particle size of the silt particles and larger than the diameter of the water molecule, so as to ensure that the moisture content of the piezoelectric solidified soil is consistent with that of the external soil.
进一步地，在淤泥固化场地内每25m2范围内必须设置一个测孔，测孔内相邻测点的竖向间距为10cm-30cm。Further, a measuring hole must be set within every25m2 in the silt solidification site, and the vertical distance between adjacent measuring points in the measuring hole is 10cm-30cm.
发明原理：在压电陶瓷颗粒与砂具有相似的力学性质，在颗粒级配相同且配比相同的的情况下，压电固化土与导电固化土应具有相似的力学性质，无需进行压电固化土的室内配比试验。Principle of the invention: When piezoelectric ceramic particles and sand have similar mechanical properties, and in the case of the same particle gradation and the same proportion, piezoelectric solidified soil and conductive solidified soil should have similar mechanical properties, and no piezoelectric solidification is required. Indoor ratio test of soil.
超弹性橡胶模上的微小孔洞，可以容许水分子通过，但不允许淤泥颗粒通过，保证压电固化土与外界土体含水率一致，这样才可以通过测量压电固化土的压电应变常数，反映周围土体的固化程度，同时，也保证压电固化土与周围土体存在一定分割，保持形状。The tiny holes on the superelastic rubber mold can allow water molecules to pass through, but do not allow silt particles to pass through, so as to ensure that the moisture content of the piezoelectric solidified soil is consistent with that of the external soil, so that the piezoelectric strain constant of the piezoelectric solidified soil can be measured. It reflects the degree of solidification of the surrounding soil, and at the same time, it also ensures that the piezoelectric solidified soil is separated from the surrounding soil to maintain its shape.
塑料软管内的导电固化土充当压电固化土与数据采集器之间的连接导线，负责将导电固化土内的电信号传递到数据采集器中，塑料软管起到了定形及充当绝缘材料的作用。The conductive solidified soil in the plastic hose acts as the connecting wire between the piezoelectric solidified soil and the data collector, and is responsible for transmitting the electrical signals in the conductive solidified soil to the data collector. effect.
有益效果：Beneficial effects:
（1）本发明提出了针对压电固化土测量淤泥固化状态的测点布置要求；(1) The present invention proposes the measurement point arrangement requirements for measuring the solidified state of silt for piezoelectric solidified soil;
（2）本发明与传统布置方案相比，测点密度更大，且可以测量不同深度的压电固化状态，为日后关于淤泥固化相关研究，提供了测试方案；(2) Compared with the traditional arrangement scheme, the present invention has a higher density of measuring points, and can measure the piezoelectric solidification state of different depths, which provides a test scheme for future research on sludge solidification;
（3）本发明制备了导电固化土，为土体内部传感器布设方法提供了新的思路；(3) The present invention prepares the conductive solidified soil, which provides a new idea for the layout method of the sensor inside the soil;
（4）本发明中的测量传感器为压电固化土，对原位土体的性质影响较小，与传统方案相比测量结果更加准确。(4) The measurement sensor in the present invention is piezoelectric solidified soil, which has little influence on the properties of the in-situ soil, and the measurement result is more accurate compared with the traditional solution.
附图说明Description of drawings
下面结合附图对本发明做进一步详细说明。The present invention will be further described in detail below in conjunction with the accompanying drawings.
图1为本发明实施例中测孔水平向布置示意图；1 is a schematic diagram of the horizontal arrangement of measuring holes in an embodiment of the present invention;
图2为本发明测孔内部测点纵向布置示意图；Figure 2 is a schematic diagram of the longitudinal arrangement of the measuring points inside the measuring hole of the present invention;
图3为本发明测点形状及布置方向示意图；3 is a schematic diagram of the shape and arrangement direction of measuring points of the present invention;
图4为导电固化土与测量设备连接方式示意图；Figure 4 is a schematic diagram of the connection between the conductive solidified soil and the measuring equipment;
图中所示：1-压电固化土、2-导电固化土、3-网状模具、4-导线、5-超弹性橡胶薄膜套、6-塑料软管、7-测孔、8-数据采集器。As shown in the picture: 1-piezoelectric solidified soil, 2-conductive solidified soil, 3-mesh mold, 4-wire, 5-superelastic rubber film sleeve, 6-plastic hose, 7-measurement hole, 8-data collector.
具体实施方式Detailed ways
以下由特定的具体实施例说明本发明的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
须知，本说明书附图所绘的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”等的用语，亦仅为便于叙述明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。It should be noted that the structures, proportions, sizes, etc. drawn in the accompanying drawings of this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not used to limit the conditions that the present invention can be implemented. Therefore, without technical substantive significance, any modification of structure, change of proportional relationship or adjustment of size should still fall within the scope disclosed in the present invention without affecting the effect that the present invention can produce and the purpose that can be achieved. within the scope of technical content. At the same time, terms such as "up", "down", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. , the change or adjustment of the relative relationship, without substantial change of the technical content, should also be regarded as the scope of the present invention.
实施例：Example:
如图1和图2所示，本实施例的原位固化测试方法为多点并联式测试方法，在固化土竖向深度内等间距布置测孔7，内部测点由压电固土1通过导电固化土2与数据采集器连接；压电固化土1由原位淤泥与自感知淤泥固化剂固化组成，导电固化土由原位淤泥与导电固化剂组成。As shown in Figures 1 and 2, the in-situ solidification test method in this embodiment is a multi-point parallel test method. Measuring
自感知淤泥固化剂由水泥、粉煤灰、压电陶瓷颗粒和导电介质按照体积比32:18:40:10的配比混合，导电固化剂由水泥、粉煤灰、砂和导电介质按照体积比32:18:40:10的配比混合；The self-sensing sludge curing agent is mixed by cement, fly ash, piezoelectric ceramic particles and conductive medium in a volume ratio of 32:18:40:10, and the conductive curing agent is composed of cement, fly ash, sand and conductive medium by volume. Mix in a ratio of 32:18:40:10;
如图3所示，测点形状可以为圆柱体或正方体，圆柱体测点尺寸建议直径10cm，高10cm；正方体测点尺寸建议边长10cm；一端连接塑料软管6。As shown in Figure 3, the shape of the measuring point can be a cylinder or a cube. The recommended size of the cylindrical measuring point is 10cm in diameter and 10cm in height; the recommended size of the cube is 10cm in side length;
所述测点由压电固化土1、超弹橡胶薄膜套5、网状模具3、塑料软管6、导电固化土2组成；所述超弹橡胶薄膜套5置于网状模具3中；所述塑料软管6下端与超弹性橡胶薄膜5套口连接（超弹性橡胶薄膜5套口套接在塑料软管6下端）；所述压电固化土1通过塑料软管6上端注入超弹性橡胶薄膜套5中，所述压电固化土1与外界土体含水率一致；在将压电固化土1注入测点的超弹性橡胶薄膜套5中后，继续通过塑料软管6注入导电固化土2，直至塑料软管6溢满，然后将压电固化土测点埋入淤泥原位，其中塑料软管6上端伸到地面上。Described measuring point is made up of piezoelectric solidified soil 1, superelastic rubber film sleeve 5, reticulated mould 3,
如图4所示，测点测量时，在塑料软管6上端（位于地面的部分）中的导电固化土2内插入电极，在电极上连上导线并将导线引出与数据采集器8或测量设备连接。As shown in Figure 4, when measuring points, insert electrodes into the conductive solidified
需要说明的是，术语“包括”、“包含”或者任何其他变体意在涵盖非排他性的包含，从而使得包含一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。It should be noted that the terms "comprising", "comprising" or any other variation are intended to cover a non-exclusive inclusion such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes no explicit Other elements listed, or those inherent to such a process, method, article or apparatus.
本发明为淤泥固化原位检测提供了一种全新的思路与方法，具体实现该技术方案的方法和途径很多，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。因此，对附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。The present invention provides a brand new idea and method for in-situ detection of sludge solidification. There are many specific methods and approaches to realize the technical solution. The described embodiments are part of the present invention, not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the detailed descriptions of the embodiments of the invention provided in the accompanying drawings are not intended to limit the scope of the invention as claimed, but are merely representative of selected embodiments of the invention.
本发明的保护范围不限于具体实施方式所公开的技术方案，凡是依据本发明的技术实质对以上实施例所作的任何修改、等同替换、改进等，均落入本发明的保护范围。The protection scope of the present invention is not limited to the technical solutions disclosed in the specific embodiments, and any modifications, equivalent replacements, improvements, etc. made to the above embodiments according to the technical essence of the present invention all fall into the protection scope of the present invention.
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