CN104535461B - Method for monitoring diffusion process of cement grouting fluid in sand gravel layer - Google Patents
Method for monitoring diffusion process of cement grouting fluid in sand gravel layer Download PDFInfo
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- CN104535461B CN104535461B CN201510009248.9A CN201510009248A CN104535461B CN 104535461 B CN104535461 B CN 104535461B CN 201510009248 A CN201510009248 A CN 201510009248A CN 104535461 B CN104535461 B CN 104535461B
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Abstract
The invention discloses a method for monitoring the diffusion process of cement grouting fluid in a sand gravel layer. The device for monitoring the diffusion process of the cement grouting fluid in the sand gravel layer comprises a sand gravel layer cement grouting system, temperature sensors, a data acquisition module and a data processing and analyzing module. According to the method, the diffusion process of cement paste can be monitored by high-temperature cement paste and the embedded temperature sensors, the diffusion process of the cement paste in the sand gravel layer can be monitored, hence, the diffusion mechanism can be studied conveniently, and support is provided for studying grouting theories.
Description
Technical field
The present invention relates to a kind of monitoring method, more particularly to a kind of sand gravel layer cement grout slurries diffusion process monitoring
Method.
Background technology
Sand gravel layer is widely distributed in China, is common complex foundation in engineering, and grouting is used as the anti-seepage reinforcing commonly used
Means, have a wide range of applications in engineering, but because the serious delayed, process of Grouting Theory can not have in sand gravel layer ground
Effect control, effect can not obtain Reliable guarantee, limit the application of grouting.As sand gravel layer ground is increasingly taken seriously,
The demand of Grouting Theory is also more urgent, the principal element that limitation grouting technique further develops has been turned at present, among these most
It is important that recognizing slurries diffusion mechanism not enough, and lack effective monitoring method or means of testing causes this reason
Principal element, cannot effectively verify, while mesh which results in the Grouting Theory for deriving and coming by hydrodynamics and Solid Mechanics
Preceding laboratory test is the analysis of the Seed harvest to being molded after the completion of grouting, and what is obtained is all a little empirical equations, by this
A little conclusion finishing analysis, be can only obtain and qualitatively recognize, and the understanding of slurries diffusion process and diffusion mechanism is still lacked；And
Field test is subject to conditions, and majority does not carry out the range tests of slurries diffusion, after part is excavated also due to geological conditions more
Complexity, destruction etc. during excavation so that result is more discrete.If having more complete to the diffusion mechanism of sand gravel ground cement grout slurries
The understanding in face, must just be monitored to the diffusion process being in the milk, and understand the time-histories characteristic that different slurries spread in certain pressure,
And carry out lot of experiments.Existing method cannot all meet the requirement, such as Yang Ping, Zou superfine laboratory test.Other Chengdu
The patent of Polytechnics（The patent No. is 200610021638.9）Also the diffusion process method of testing of cement grout is refer to, but should
Method is directed to rock cranny grouting, uses visual method directly perceived, due to there is essential distinction in sand gravel and crack cannot
Direct-view, Filling Characteristic is also different, therefore the method cannot be used for the cement grout of sand and gravel stratum.
The present invention is directed to above-mentioned condition, and proposition is diffused through using high-temperature water mud and pre-buried temperature sensor to cement mortar
Journey is monitored.According to existing research, its characteristic has certain difference to cement mortar at different temperature, is mainly closed in grouting
The index of the heart includes apparent viscosity, mobility, setting time, and high temperature slurries have difference with conventional cement slurries in these parameter values
Not, when these parameters are used as a deterministic physical quantity and physical quantity, the understanding to slurries Diffusion Law is had no effect on,
Its achievement in research is equally applicable in traditional cements grouting, and different is only the change of numerical values recited, such that it is able to realize
Diffusion process monitoring to cement mortar in sand gravel layer, and then its diffusion mechanism is studied, for the research of Grouting Theory provides branch
Support.
The content of the invention
To overcome the shortcomings of that above-mentioned prior art is present, the purpose of the present invention is to provide a kind of sand gravel layer cement grout
Slurries diffusion process monitoring method, is carried out by using high-temperature water mud and pre-buried temperature sensor to the diffusion process of cement mortar
Monitoring, realizes the diffusion process monitoring to cement mortar in sand gravel layer, and then is easy to study its diffusion mechanism, for grouting is managed
The research of opinion provides support.
It is that, up to above and other purpose, the present invention proposes a kind of sand gravel layer cement grout slurries diffusion process monitoring dress
Put, it is characterised in that：The device at least includes：Sand gravel layer cement grout system, including grout pipe is good with layering load configurations
Sand gravel layer, the grout pipe be used for sand gravel layer irrigate high-temperature water mud；Temperature sensor, temperature sensor is according to ring
Shape is arranged in around the grout pipe in each layer sand gravel layer；Data acquisition module, the data for gathering each temperature sensor；
Data Management Analysis module, the data to the data collecting module collected carry out online or off-line analysis, determine analysis cement
The dispersal behavior of slurry.
Further, the sample frequency of the data acquisition module is not less than 10Hz.
Further, the Data Management Analysis module is used to obtain the position coordinates of each sensor, and the data are adopted
The data of collection module collection carry out online or off-line analysis, temperature signal are converted electrical signals to, by temperature time-history curves
Temperature is uprushed and judges that slurries reach the moment of sensor position, realizes the process monitoring to cement mortar diffusion.
Further, the temperature sensor is evenly arranged in the grout hole peripheral circular of the grout pipe.
Further, the high-temperature water mud is configured using 65~70 DEG C of hot water to cement mortar.
To reach above-mentioned purpose, the present invention also provides a kind of sand gravel layer cement grout slurries diffusion process monitoring method,
Comprise the following steps：
Step one, layering loads sand gravel and lays temperature sensor, and grout pipe is buried in setting position, and by each temperature
Sensor is connected to data acquisition module and Data Management Analysis module by transfer wire；
Step 2, configures high-temperature water mud；
Step 3, the grout pipe is poured into by the high-temperature water mud, using each temperature of the data collecting module collected
The data of sensor, and online or off-line analysis is carried out to the data for gathering using the Data Management Analysis module, determine and divide
The dispersal behavior of bleed mud.
Further, step one also includes as follows：Layering load configurations sand gravel layer, height is specified when ground floor laying reaches
After degree, mounting temperature sensor, determination sensor position, then carries out the loading of next layer of sand gravel again；Setting
Positioning puts the embedded grout pipe；Finally connect grouting equipment；The transfer wire of each sensor is connected into the data to adopt
Collection module and the data processing module；It is input into each sensor for information about, and carries out collecting test, it is ensured that each sensor is adopted
The data of collection are accurate.
Further, in step 2, also including taking fraction slurries, apparent viscosity, mobility and setting time are carried out
The step of index test.
Further, the high-temperature water mud is configured using 65~70 DEG C of hot water to cement mortar.
Further, step 3 also comprises the following steps：
Obtain the position coordinates of each sensor；
Data to affiliated data collecting module collected carry out online or off-line analysis, convert electrical signals to temperature letter
Number, uprushed by temperature in temperature time-history curves and judge that slurries reach the moment of sensor position；
Show the diffusion process of slurries.
Compared with prior art, a kind of sand gravel cement grout slurries dispersal behavior monitoring method of the invention is by using height
Warm water mud and pre-buried temperature sensor are monitored to the diffusion process of cement mortar, realize to cement mortar in sand gravel layer
Diffusion process monitoring, and then be easy to study its diffusion mechanism, for the research of Grouting Theory provides support.
Brief description of the drawings
Fig. 1 is a kind of structural representation of sand gravel layer cement grout slurries diffusion process monitoring device of the invention；
Fig. 2 is the schematic diagram of temperature sensor arrangement in present pre-ferred embodiments；
The step of Fig. 3 is a kind of sand gravel cement grout slurries dispersal behavior monitoring method of the invention flow chart；
Fig. 4 is measured data of the present invention and judges that slurries reach the graphical method signal of sensor position；
Fig. 5 is a kind of flow of the specific embodiment of sand gravel cement grout slurries dispersal behavior monitoring method of the invention
Figure.
Specific embodiment
Below by way of specific instantiation and embodiments of the present invention are described with reference to the drawings, those skilled in the art can
Further advantage of the invention and effect are understood by content disclosed in the present specification easily.The present invention also can be different by other
Instantiation implemented or applied, the various details in this specification also can based on different viewpoints with application, without departing substantially from
Various modifications and change are carried out under spirit of the invention.
Sand gravel layer cement grout slurries diffusion process monitoring device of the present invention is using high-temperature water mud as filling
Slurry slurries, by pre-buried multiple temperature sensors in sand and gravel stratum, the diffusion of temperature change according to sensor to slurries
Process is monitored.
Fig. 1 is a kind of structural representation of sand gravel layer cement grout slurries diffusion process monitoring device of the invention.Including
Sand gravel layer cement grout system 1, temperature sensor 3, data acquisition module 5 and Data Management Analysis module 6.
Wherein, sand gravel layer cement grout system 1 includes grout pipe 2 and the good sand gravel layer of layering load configurations, described
Grout pipe is used to irrigate high-temperature water mud to sand gravel layer；Grout pipe 2 is embedded in setting position, and it uses high-temperature water mud（About
60℃）As grouting slurries, high-temperature water mud is irrigated to sand gravel layer；Temperature sensor 3 is evenly arranged in each layer according to annular
Around grout pipe 2 in sand gravel layer, each temperature sensor 3 connects data acquisition module 5, each temperature by transfer wire 4
Sensor 3 is considered as the laying of transfer wire 4 when arranging, be principle to reduce to the interference being in the milk；Data acquisition module 5 is used for
The temperature signal and for information about of each temperature sensor 3 is gathered, and is sent to Data Management Analysis module 6, in the present invention
In preferred embodiment, data acquisition module 5 uses Multichannel data acquisition device, and its sample frequency is not less than 10Hz；Data processing
Analysis module 6 carries out online or off-line analysis to the data that data acquisition module 5 is gathered, and determines the diffusion row of analysis cement mortar
For specifically, Data Management Analysis module 6 obtains the position coordinates of each sensor；To the data of the collection of data acquisition module 5
Online or off-line analysis is carried out, temperature signal is converted electrical signals to, is uprushed by temperature in temperature time-history curves and is judged slurry
Liquid reaches the moment of sensor position, so as to realize the process monitoring of slurries diffusion, online（Or history）Display slurries
Diffusion process.
Fig. 2 is the schematic diagram of temperature sensor arrangement in present pre-ferred embodiments.Below will be by a specific embodiment
The present invention is further described.In the specific embodiment of the invention, when sand gravel layer is tested indoors, sand gravel should be layered dress
Carry, temperature sensor 3 is evenly arranged in around grout pipe 2 according to annular（Dashed circle represents temperature sensor annular in Fig. 2
Arrangement）, and the position of layout points is determined, arrange the cloth for carrying out next layer of sand gravel device and temperature sensor 3 after one layer again
If, as shown in Figure 2.The laying of transfer wire 4 is considered as when sand and gravel stratum layering is loaded and temperature sensor 3 is arranged, to subtract
Few interference to being in the milk is principle, first disperses the mode concentrated afterwards to carry out；The volume of temperature sensor 3 should be as far as possible small, while tool
Have waterproof, it is wear-resisting the characteristics of；Data acquisition module 5 is Multichannel data acquisition device, the correlation for gathering each temperature sensor
Information and signal；The function that Data Management Analysis module 6 possesses includes：The position coordinates of each temperature sensor is obtained, to data
The data of the collection of acquisition module 5 carry out online or off-line analysis, the electric signal of collection are converted into temperature signal, during by temperature
The catastrophe point of journey curve judges whether slurries reach sensor position；Online（Or history）Show the diffusion process of slurries.
, it is necessary to measure cement mortar at high temperature before monitoring is implemented（General 60 DEG C）Characterisitic parameter, it is such as apparent viscous
Degree, mobility and setting time etc..
The step of Fig. 3 is a kind of sand gravel cement grout slurries dispersal behavior monitoring method of the invention flow chart.Such as Fig. 3 institutes
Show that a kind of sand gravel cement grout slurries dispersal behavior monitoring method of the invention comprises the following steps：
Step 301, layering loads sand gravel and lays temperature sensor, and grout pipe is buried in setting position, and by each temperature
Degree sensor is connected to data acquisition module and Data Management Analysis module by transfer wire.The temperature sensor annular of each layer
It is evenly arranged in around the grout hole of grout pipe 2.
Step 302, configures high-temperature water mud.Cement mortar configuration is carried out using hot water, water temperature selects 65~70 DEG C or so, stirs
Slurry temperature after mixing takes fraction slurries at 60 DEG C or so, carries out the survey of the indexs such as apparent viscosity, mobility and setting time
Examination.
Step 303, carries out grouting experiment, and high-temperature water mud is poured into grout pipe 2, using each temperature of data collecting module collected
Degree sensor, Data Management Analysis module carries out online or off-line analysis to the data for gathering, and determines the diffusion of analysis cement mortar
Behavior.I.e. specifically, the position coordinates of each sensor is obtained；Data to gathering carry out online or off-line analysis, by telecommunications
Number temperature signal is converted into, compares numerical value in the temperature sensor temperature time course data and uprush moment point, determine that slurries reach this
The moment of sensor；Online（Or history）Show the diffusion process of slurries.
In the specific embodiment of the invention, judge that the method that slurries reach sensing station is by comparing the TEMP
Numerical value is uprushed moment point in device temperature time course data, i.e.,：
,
Wherein,Temperature takes the first of greatest gradient to the gradient maxima of time in representing time course data
Moment beginning is diffused into this time for slurries；
Certainly, the present invention can also be determined using diagram method, typical temperature time-history curves as shown in figure 4, be in figure away from
Temperature time-history curves with a distance from grout hole respectively away from 0cm, 10cm, 20cm, 30cm, oblique line is maximum oblique in time-history curves
Rate, vertical line is the time point that slurries reach the sensing station with time shaft intersection point：
Fig. 5 is a kind of flow of the specific embodiment of sand gravel cement grout slurries dispersal behavior monitoring method of the invention
Figure.The prison of the sand gravel cement grout slurries dispersal behavior monitoring method of the present invention will be illustrated by a specific embodiment below
Survey process, it is comprised the following steps that：
1st, layering loads sand gravel foundation model and sensor：According to a point requirement buried with sensor of design, point
The good sand gravel of layer load configurations, ground floor is laid after reaching specified altitude assignment, mounting temperature sensor, again determination sensor institute
In position, the loading of next layer of sand gravel is then carried out.Grout pipe is buried in setting position；Finally connect the filling such as grouting pump
Slurry equipment.
2nd, the transmission line of sensor is connected to data acquisition module and Data Management Analysis module, and opens data processing
Analysis software, input pickup for information about, and carries out collecting test, it is ensured that the data of each sensor collection are accurate.
3rd, high-temperature water mud is configured, cement mortar configuration is carried out using hot water, water temperature selects 65~70 DEG C or so, after stirring
Slurry temperature takes fraction slurries at 60 DEG C or so, carries out the index tests such as apparent viscosity, mobility and setting time.
4th, grouting test, starts grouting pump and is in the milk.Gather each temperature sensor, the data to gathering carry out it is online or
Off-line analysis, calculates, take, and show diffusion process.
In sum, a kind of sand gravel cement grout slurries dispersal behavior monitoring method of the invention is by using high-temperature cement
Slurry and pre-buried temperature sensor are monitored to the diffusion process of cement mortar, realize the diffusion in sand gravel layer to cement mortar
Process monitoring, and then be easy to study its diffusion mechanism, for the research of Grouting Theory provides support.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.Any
Art personnel can be modified above-described embodiment and are changed under without prejudice to spirit and scope of the invention.Therefore,
The scope of the present invention, should be as listed by claims.
Claims (9)
1. a kind of sand gravel layer cement grout slurries diffusion process monitoring method, the monitoring device of the monitoring method at least includes：
Sand gravel layer cement grout system, including grout pipe and the good sand gravel layer of layering load configurations, the grout pipe are used for
High-temperature water mud is irrigated to sand gravel layer；
Temperature sensor, temperature sensor according to the grout pipe being circular layout in each layer sand gravel layer around；
Data acquisition module, the data for gathering each temperature sensor；
Data Management Analysis module, the data to the data collecting module collected carry out online or off-line analysis, determine analysis
The dispersal behavior of cement mortar；
Its monitoring method comprises the following steps：
Step one, layering loads sand gravel layer and lays temperature sensor, buries grout pipe in setting position, and each temperature is passed
Sensor is connected to data acquisition module and Data Management Analysis module by transfer wire；
Step 2, configures high-temperature water mud；
Step 3, the grout pipe is poured into by the high-temperature water mud, using each TEMP of the data collecting module collected
The data of device, and online or off-line analysis is carried out to the data for gathering using the Data Management Analysis module, determine analysis water
The dispersal behavior of mud.
2. a kind of sand gravel layer cement grout slurries diffusion process monitoring method as claimed in claim 1, it is characterised in that：Institute
The sample frequency for stating data acquisition module is not less than 10Hz.
3. a kind of sand gravel layer cement grout slurries diffusion process monitoring method as claimed in claim 1, it is characterised in that：Institute
State Data Management Analysis module is carried out for obtaining the position coordinates of each sensor, the data to the data collecting module collected
Online or off-line analysis, converts electrical signals to temperature signal, is uprushed by temperature in temperature time-history curves and judges that slurries reach
To the moment of sensor position, the process monitoring to cement mortar diffusion is realized.
4. a kind of sand gravel layer cement grout slurries diffusion process monitoring method as claimed in claim 1, it is characterised in that：Institute
The grout hole peripheral circular that temperature sensor is stated in the grout pipe is evenly arranged.
5. a kind of sand gravel layer cement grout slurries diffusion process monitoring method as claimed in claim 1, it is characterised in that：Institute
High-temperature water mud is stated to configure cement mortar using 65~70 DEG C of hot water.
6. a kind of sand gravel layer cement grout slurries diffusion process monitoring method as claimed in claim 1, it is characterised in that step
Rapid one also including as follows：Layering load configurations sand gravel layer, after ground floor laying reaches specified altitude assignment, installs TEMP
Device, determination sensor position, then carries out the loading of next layer of sand gravel again；Reset position and bury the grouting
Pipe；Finally connect grouting equipment；The transfer wire of each sensor is connected at the data acquisition module and the data
Reason module；It is input into each sensor for information about, and carries out collecting test, it is ensured that the data of each sensor collection is accurate.
7. a kind of sand gravel layer cement grout slurries diffusion process monitoring method as claimed in claim 1, it is characterised in that：In
In step 2, also including taking fraction slurries, the step of carry out the index test of apparent viscosity, mobility and setting time.
8. a kind of sand gravel layer cement grout slurries diffusion process monitoring method as claimed in claim 7, it is characterised in that：Institute
High-temperature water mud is stated to configure cement mortar using 65~70 DEG C of hot water.
9. a kind of sand gravel layer cement grout slurries diffusion process monitoring method as claimed in claim 1, it is characterised in that step
Rapid three also comprise the following steps：
Obtain the position coordinates of each sensor；
Data to affiliated data collecting module collected carry out online or off-line analysis, convert electrical signals to temperature signal, lead to
Temperature is uprushed and judges that slurries reach the moment of sensor position in excess temperature time-history curves；
Show the diffusion process of slurries.
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| CN201510009248.9A CN104535461B (en) | 2015-01-08 | 2015-01-08 | Method for monitoring diffusion process of cement grouting fluid in sand gravel layer |
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| CN112985999B (en) * | 2021-02-09 | 2022-06-07 | 中铁隧道局集团有限公司 | Grouting model test device and method used under coupling effect of multi-field environment |
| CN113049452B (en) * | 2021-04-15 | 2021-10-26 | 中国水利水电科学研究院 | Device and method for measuring and controlling diffusion range of cement-based grout in grouting of covering layer |
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| CN103018152A (en) * | 2012-12-20 | 2013-04-03 | 湖南科技大学 | Indoor grouting testing device under simulation of complex stress effect and testing method thereof |
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| CN202956329U (en) * | 2012-12-20 | 2013-05-29 | 湖南科技大学 | Indoor grouting test device under action of simulated complex stress |
| CN204374033U (en) * | 2015-01-08 | 2015-06-03 | 中国水利水电科学研究院 | A kind of sand gravel layer cementation process slurries diffusion process monitoring device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2524414C1 (en) * | 2012-12-24 | 2014-07-27 | Шлюмберже Текнолоджи Б.В. | Method of determining adsorption heat and wetting heat of surface and calorimeter measurement cell |
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| CN103048439A (en) * | 2012-12-04 | 2013-04-17 | 三峡大学 | Pressure grouting experiment device |
| CN103018152A (en) * | 2012-12-20 | 2013-04-03 | 湖南科技大学 | Indoor grouting testing device under simulation of complex stress effect and testing method thereof |
| CN202956329U (en) * | 2012-12-20 | 2013-05-29 | 湖南科技大学 | Indoor grouting test device under action of simulated complex stress |
| CN204374033U (en) * | 2015-01-08 | 2015-06-03 | 中国水利水电科学研究院 | A kind of sand gravel layer cementation process slurries diffusion process monitoring device |
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Inventor after: Huang Liwei Inventor after: Fu Ping Inventor after: Zhang Jinjie Inventor after: Xing Zhanqing Inventor after: Zhao Weiquan Inventor after: Zhou Jianhua Inventor after: Wang Lijuan Inventor before: Wang Chun Inventor before: Fu Ping Inventor before: Zhang Jinjie Inventor before: Zhao Weiquan Inventor before: Xing Zhanqing |
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