CN114150718B - Early warning treatment and detection process for underground structure non-uniform settlement diseases - Google Patents
Early warning treatment and detection process for underground structure non-uniform settlement diseases Download PDFInfo
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- CN114150718B CN114150718B CN202210116959.6A CN202210116959A CN114150718B CN 114150718 B CN114150718 B CN 114150718B CN 202210116959 A CN202210116959 A CN 202210116959A CN 114150718 B CN114150718 B CN 114150718B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
Abstract
The invention discloses an early warning treatment and detection process for underground structure non-uniform settlement diseases, which belongs to the technical field of underground structure disease treatment and comprises the following steps: monitoring non-uniform settlement displacement values of two sides of a disease part
Drawing
Monitoring a history curve; performing curve fitting and comparing to determine the optimum
Fitting a curve and an optimal fitting function expression; according to the end time of monitoring
Corresponding non-uniform settlement displacement monitoring value
And a certain time in the future
Corresponding non-uniform settlement displacement prediction value
And allowable value of non-uniform sedimentation displacement
Comparing, and carrying out early warning evaluation on the disease degree of the part; treating the part needing to be repaired by adopting a grouting lifting method or a compaction reinforcing method; and establishing a quantitative evaluation index of the disease repairing and treating effect, and quantitatively evaluating the repairing and treating effect. Can realize underground knot after restorationThe quantitative evaluation of the safe operation and maintenance state of the structure solves the problem that the non-uniform settlement disease of the underground structure lacks an effective quantitative early warning and treatment detection technology at present.
Description
Technical Field
The invention relates to the technical field of disease treatment of underground structures, in particular to an early warning treatment and detection process for non-uniform settlement diseases of underground structures.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The development scale of infrastructures such as urban ground buildings and traffic is increasingly large, and a series of problems such as noise, congestion and environmental pollution are derived. The urban underground space is a precious resource in urban construction development, and the development and utilization of the urban underground space can provide new space for urban infrastructure and living services and can effectively alleviate the problems. At present, common urban underground space engineering mainly comprises underground railways, underground tunnels, underground comprehensive pipe galleries, street-crossing underground passages, underground commercial complexes, underground civil air defense engineering, underground houses or other various underground structures.
In the process of developing various underground spaces and constructing underground structural engineering, the artificial miscellaneous fill, collapsible loess, expansive soil, soft cohesive soil, mucky soil, water-rich sand layer, confined water stratum and other various unfavorable strata can inevitably pass through. After the underground structure is constructed, the underground structure is buried underground for a long time and is influenced by underground water, ground traffic load, adjacent excavation disturbance, poor soft stratum and the like, and the underground structure is difficult to provide stable and reliable foundation bearing capacity, so that the problem of non-uniform settlement is inevitable in the long-term operation process of the underground structure, various secondary diseases such as structural cracking, damage, water leakage and the like are easily caused, and the safety and normal use of the underground structure are seriously influenced.
The inventor finds that the underground structure belongs to underground concealed engineering after being built, and the following defects exist in the aspect of detection and treatment of the non-uniform settlement diseases of the underground structure at present due to more factors influencing the non-uniform settlement diseases:
(1) at present, a complete set of effective early warning detection technology and scientific evaluation method support is lacked, effective long-term real-time monitoring on a part potentially possibly suffering from non-uniform settlement diseases is difficult to carry out, real-time evaluation on evolution characteristics of the non-uniform settlement disease process cannot be carried out on the basis of real-time monitoring data, and the development trend of future non-uniform settlement diseases is effectively predicted;
(2) at present, when the conventional technology is used for detecting and evaluating the non-uniform settlement disease of an underground structure, the non-uniform settlement deformation value obtained at a certain moment is often compared with an allowable value to judge whether the disease problem exists, the process evolution characteristics of the disease and the future development trend are not considered in a fusion manner, and further deep research and optimization are needed for the non-uniform settlement disease detection evaluation method and the evaluation index standard;
(3) in the aspect of treating the non-uniform settlement disease of the underground structure, the underground structure is buried underground and belongs to a hidden project, the outer surface of the underground structure per se comprises a waterproof layer for protecting the outer waterproof layer from being damaged, so that the treatment process is difficult to carry out treatment on the underground structure from the inside of the underground structure, the existing technology and method for treating the non-uniform settlement disease of the underground structure are not mature, and the technology and method are also a technical problem in the field of the existing industry;
(4) at present, based on traditional cognition and a traditional technical method, after the disease repairing and treating of the non-uniform settlement of the underground structure is considered, the treating is marked to be finished, and the long-term repairing and treating effect is not considered or concerned, so that the disease problem of some underground structures repeatedly appears; for repairing underground structure diseases, comprehensive consideration is carried out from the perspective of the whole life cycle, and long-term effective scientific detection and evaluation is carried out on the repairing and treating effects, so that the long-term healthy operation of the underground structure can be effectively guaranteed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an early warning treatment and detection process for the non-uniform settlement diseases of the underground structure, which can effectively realize the real-time monitoring and early warning evaluation of the characteristic data of the non-uniform settlement diseases and effectively solve the problem of the treatment of the non-uniform settlement diseases, and simultaneously can realize the quantitative evaluation of the safe operation and maintenance state of the repaired underground structure through the quantitative evaluation index and method of the repair and treatment effect of the non-uniform settlement diseases, guide the scientific repair and treatment of the non-uniform settlement diseases of the underground structure and solve the problem that the non-uniform settlement diseases of the underground structure lack the effective quantitative early warning and treatment detection technology at present.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides an early warning treatment and detection process for uneven settlement diseases of an underground structure, which comprises the following steps:
step 1: after the underground structure is built, mounting settlement displacement monitoring sensors on two sides of the part predicted to have the non-uniform settlement diseases so as to monitor the non-uniform settlement displacement values on the two sides of the part
And drawing
And monitoring time
Is/are as follows
Monitoring a history curve;
step 2: using pairs of mathematical functions
Carrying out curve fitting on the monitoring process curve, and comparing and selecting to determine the optimal corresponding to the monitoring process curve
Fitting a curve and an optimal fitting function expression;
and step 3: according to
Monitoring the history curve to obtain the final monitoring time
Corresponding non-uniform settlement displacement monitoring value
And according to the optimum
Calculating the fitting curve and the optimal fitting function expression to obtain a certain time in the future
Corresponding non-uniform settlement displacement prediction value
；
And 4, step 4: will monitor the value
And the predicted value
And allowable value of non-uniform sedimentation displacement
Comparing, carrying out early warning evaluation on the non-uniform settlement disease degree of the part, and judging whether to carry out repair treatment or not;
and 5: aiming at the part needing to be repaired and treated by non-uniform settlement, the underground structure on one side of the part which generates larger settlement displacement is repaired and treated by a grouting lifting method or a compaction reinforcing method;
step 6: in the process of repairing and treating, when the non-uniform settlement displacement value of two sides of the position is less than an allowable value
When the repair is finished, and the time of finishing the repair is recorded
Corresponding non-uniform settlement displacement monitoring value
；
And 7: after the non-uniform settlement disease of the part is repaired and treated at a certain moment
Recording the time of day
Corresponding non-uniform settlement displacement monitoring value
Establishing a quantitative evaluation index of the disease repairing and treating effect of the part
And is combined with the index allowable value
And comparing and quantitatively judging the repairing and treating effects of the non-uniform settlement diseases at the part.
The beneficial effects of the invention are as follows:
(1) according to the invention, the settlement displacement monitoring sensors are arranged on two sides of the potential uneven settlement part, so that the uneven settlement monitoring data of the underground structure at the position can be automatically recorded in real time, the disease development characteristics and the safe operation and maintenance state of the underground structure can be mastered in real time, the advantages of high disease monitoring efficiency, low labor intensity and the like are achieved, and the informatization and intelligent management level of the safe operation and maintenance of the underground structure is improved.
(2) According to the invention, an optimal fitting curve is obtained by fitting a monitoring data curve, and comprehensive early warning is carried out on the disease degree of the non-uniform settlement disease and the future development trend by combining the non-uniform settlement value at the final monitoring moment and a certain future moment, so as to judge whether the disease exists and whether the disease needs to be treated, rather than simply comparing the detection value at a certain moment with an allowable value in the prior art, the quantitative prediction and evaluation on the non-uniform settlement disease degree of the underground structure can be effectively realized, and the early warning and control on the non-uniform settlement disease of the underground structure are more efficient and scientific.
(3) The invention provides a complete set of repairing process method based on a grouting lifting method or a compaction reinforcing method aiming at the non-uniform settlement diseases of the underground structure, the repairing and treating process is implemented outside the underground structure, the damage to the outer waterproof layer of the surface of the main body of the underground structure can be avoided, the scientific and reasonable repair of the non-uniform settlement diseases is realized, and the problem of treating the non-uniform settlement diseases of the underground structure is solved.
(4) The invention provides a quantitative evaluation index of the repairing and treating effect of the non-uniform settlement diseases, which is a relative change value of the non-uniform settlement values at different moments after repairing and treating, can more effectively reflect the change amplitude, change rate and development trend of the non-uniform settlement values compared with the non-uniform settlement values at a certain moment after repairing, is more suitable for the long-term operation and maintenance process of the underground structure, further realizes the quantitative evaluation of the safe operation and maintenance state of the underground structure after repairing and treating, and guides the scientific repairing and treating of the non-uniform settlement diseases of the underground structure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic flow chart of an early warning treatment and detection process for non-uniform settlement diseases of underground structures according to the present invention;
fig. 2 is a schematic view of the installation position of the settlement displacement monitoring sensor of the invention;
FIG. 3 is a view showing the best mode of the present invention
Comparing and selecting the determined schematic diagram of the fitting curve and the optimal fitting function expression;
FIG. 4 is a schematic diagram of repairing and treating non-uniform settlement diseases by a grouting lifting method;
FIG. 5 is a schematic view of repairing and treating non-uniform settlement diseases by a compaction and reinforcement method;
FIG. 6 is a schematic diagram showing the effect of the present invention after repairing and treating non-uniform settlement diseases by compaction and reinforcement;
in the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
wherein, 1, underground structure; 2. deformation joints; 3. a settlement displacement monitoring sensor; 4.
monitoring a history curve; 5. grouting holes; 6. a grouting pipe; 7. a grout stopping plug; 8. grouting a slurry filling area; 9. compacting the holes; 10. and filling the materials.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As introduced in the background art, because the problem of the non-uniform settlement diseases of the underground structure is influenced by a plurality of influencing factors, a complete set of effective comprehensive quantitative early warning and treatment monitoring process is lacked, and in order to solve the technical problems, the invention provides an early warning treatment and detection process for the non-uniform settlement diseases of the underground structure, and realizes the quantitative evaluation of the detection, early warning, restoration and repair treatment effects of the non-uniform settlement diseases of the underground structure.
For the underground structure, because the underground structure is buried below the ground surface, the parts which are potentially subjected to non-uniform settlement diseases are easily arranged at the positions of construction joints, settlement joints, expansion joints or deformation joints, the change position of the section size of the underground structure, the change position of the soil covering thickness of the underground structure, the change position of the stratum condition difference, the change position of the upper ground surface load, the influence position of the critical excavation construction disturbance and the like. In a typical embodiment of the invention, as shown in fig. 1 to 6, an early warning treatment and detection process for the non-uniform settlement disease of the underground structure is provided, so that quantitative detection and quantitative evaluation of treatment effects of the non-uniform settlement of the underground structure can be realized. The method specifically comprises the following steps:
non-uniform settlement displacement in-situ monitoring
Step 1: after the construction and construction of the on-site underground structure 1 are finished, respectively installing settlement displacement monitoring sensors 3 at two sides of a part (namely, a part which is determined according to engineering experience and actual prediction of on-site engineering and is likely to have non-uniform settlement, such as a certain underground structure deformation joint 2 in the figure 2) with potential non-uniform settlement diseases, and monitoring non-uniform settlement displacement values at two sides of the part
；
Wherein the non-uniform settlement displacement is monitored
The vertical settlement displacement monitoring data value difference is an absolute value of the vertical settlement displacement monitoring data value difference corresponding to the settlement displacement monitoring sensors 3 arranged on two sides of the underground structure 1 where the non-uniform settlement possibly occurs.
By installing settlement displacement monitoring sensors on two sides of a potential uneven settlement part, uneven settlement monitoring data of the underground structure 1 at the position can be automatically recorded in real time, the disease development characteristics and the safe operation and maintenance state of the underground structure 1 can be mastered in real time, the method has the advantages of high disease monitoring efficiency, low labor intensity and the like, and the informatization and intelligent management level of the safe operation and maintenance of the underground structure 1 is improved.
Step 2: the non-uniform settlement displacement monitoring value obtained according to the step 1
Drawing non-uniform settlement displacement monitoring value
And monitoring time
Is/are as follows
The history curve 4 is monitored as shown in fig. 3.
(II) non-uniform settlement disease early warning evaluation
And step 3: obtained according to the steps 1 and 2
A monitoring course curve 4, a plurality of mathematical functions are utilized to perform curve fitting on the monitoring course curve, and the optimal corresponding to the monitoring course curve is determined by comparing and selecting
Fitting a curve and an optimal fitting function expression;
optimization of
The method for determining the comparison and selection of the fitting curve and the optimal fitting function expression comprises the following steps: subjecting the product obtained in step 2
Introducing the monitoring data corresponding to the monitoring process curve into software such as Matlab, Origin or SPSS, respectively performing curve fitting on the monitoring data by using various mathematical functions to obtain expressions and correlation coefficients of each fitting function
And based on the correlation coefficient
The size ratio of the optimal fitting function expression and the optimal fitting function expression are determined
Fitting a curve;
wherein the correlation coefficient
The closer to 1 the absolute value of (A) indicates that the fitted function curve is
The more significant the correlation of the monitoring history curve is; coefficient of correlation
When the absolute value of (a) is closest to 1, the corresponding fitting function expression is the optimal fitting function expression, and the corresponding fitting function curve is the optimal fitting function expression
And (6) fitting a curve.
In particular, using various pairs of mathematical functions
Monitoring history curve 4 fitting, can be adoptedFitting functions include, but are not limited to, linear functions, hyperbolic functions, power functions, exponential functions, logarithmic functions.
In this embodiment, 4 kinds of functions are adopted to perform the step 2
The monitoring history curve 4 is fitted, and the specific process can be fitted by introducing the monitoring data into software such as Matlab, Origin or SPSS.
In this embodiment, the 4 fitting functions are respectively a hyperbolic function, a power function, an exponential function, and a logarithmic function, and the 4 fitting function expressions and corresponding correlation coefficients obtained after fitting are respectively:
hyperbolic function expression
Coefficient of correlation
；
Expression of power function
Correlation coefficient of
；
Expression of exponential function
Correlation coefficient of
；
Expression of logarithmic function
Correlation coefficient of
。
It is understood that the number and types of fitting functions used in other embodiments are selected according to actual requirements, and are not limited herein.
Due to the correlation coefficient
The closer to 1 the absolute value of (A), the curve of the fitting function is illustrated
The more significant the correlation of the monitoring history curve 4 is; correlation coefficient
When the absolute value of (a) is closest to 1, the corresponding fitting function expression is the optimal fitting function expression at that time, and the corresponding fitting function curve is the optimal fitting function expression
And (6) fitting a curve.
Therefore, by comparing the 4 fitting functions and the magnitudes of the correlation coefficients, the correlation coefficients corresponding to the hyperbolic functions can be seen
Nearest to 1, then
Hyperbolic function expression corresponding to monitoring course curve 4
For the best fit function expression, the corresponding fit function curve is the best
Fitting the curve, as shown in FIG. 3, with the optimal curve, a future time can be calculated
Corresponding non-uniform settlement displacement prediction value
。
And 4, step 4: according to
Monitoring the history curve 4 to obtain the final monitoring time
Corresponding non-uniform settlement displacement monitoring value
And according to the optimum
The fitting curve and the optimal fitting function expression are calculated to obtain a certain time in the future
Corresponding non-uniform settlement displacement prediction value
；
In this embodiment, day 80 is selected as the end of monitoring
And day 93 is the future monitoring time
The description is given for the sake of example.
That is, when
When the day is not less than 80 days,
the monitoring end time (c) corresponding to the monitoring history curve 4
=80 days) non-uniform sedimentation displacement monitoring value
12.251 mm; further, will be in the future
=93 days into the best fit function expression (hyperbolic function expression)
The predicted value of the non-uniform settlement displacement corresponding to the future 93 th day can be obtained
To obtain
=12.939mm。
And 5: according to the monitoring value obtained in step 4
And the predicted value
And combining the allowable value of non-uniform settlement displacement of the monitoring part
The method comprises the following steps of carrying out early warning evaluation on the non-uniform settlement disease degree of the underground structure 1 at the monitoring part, wherein the method specifically comprises the following steps:
a. if it is
If so, the problem of non-uniform settlement disease exists at the part, and the repair and treatment are needed;
b. if it is
And is and
the problem of non-uniform settlement disease will occur at the part, and the repair and treatment are needed;
c. if it is
And is and
and the part has no problem of non-uniform settlement diseases and does not need to be repaired and treated.
The optimal fitting curve is obtained by fitting the monitoring data curve, and comprehensive early warning is carried out on the disease degree of the non-uniform settlement disease and the future development trend by combining the non-uniform settlement value at the final monitoring moment and a certain future moment, so as to judge whether the disease exists or not and whether the disease needs to be treated, rather than simply comparing the detection value at a certain moment with an allowable value in the traditional method, the quantitative prediction and evaluation on the non-uniform settlement disease degree of the underground structure can be effectively realized, and the control on the non-uniform settlement disease of the underground structure is more efficient and scientific.
(III) repairing and treating the non-uniform settlement disease
Step 6: aiming at the part which is determined in the step 5 and needs to be subjected to non-uniform settlement disease restoration treatment, the side of the part which generates larger settlement displacement is subjected to restoration treatment by means of a grouting lifting method, a compaction reinforcing method and the like;
as shown in fig. 4, the grouting lifting method in step 6 specifically includes the following steps:
a. grouting holes 5 are drilled into the stratum at the lower part of the underground structure 1 at the side with larger settlement displacement value at reasonable intervals at the lower part of the underground structure 1 at the side;
b. inserting a grouting pipe 6 into the grouting hole 5, and installing a grout stop plug 7 at the orifice of the grouting hole 5 to prevent grout from leaking along the orifice in the grouting process;
c. after the grouting pipes 6 are connected, performing high-pressure grouting on the stratum at the bottom of the underground structure 1 at the side with larger settlement displacement according to the principle of small quantity and multiple times to form a grouting slurry filling area 8;
d. in the grouting process, the underground structure 1 on the side is lifted under the pressure action of grouting slurry, and the change of the settlement displacement value of the underground structure 1 on the side is monitored in real time by using the settlement displacement monitoring sensor 3 installed in the step 1;
e. when the non-uniform settlement displacement monitoring value corresponding to the disease repair treatment part is smaller than an allowable value
When the grouting is finished, removing the grouting device;
f. and after the grouting slurry is completely solidified in the stratum, completing the repair and treatment of the non-uniform settlement diseases of the underground structure 1 at the part.
As shown in fig. 5 and 6, the compaction and reinforcement method in step 6 specifically includes the following steps:
a', drilling compaction holes 9 into the stratum at the lower part of the underground structure 1 at a reasonable interval at the lower part of the underground structure 1 at the side with larger settlement displacement value;
b', filling materials 10 such as sand or gravel are put into the compaction holes 9;
c, extruding the filling material 10 in the compaction hole 9 by using mechanical hammering or vibration extrusion and other modes, so that the filling material 10 extrudes the surrounding stratum rock-soil body to realize that the underground structure 1 at one side with larger settlement displacement is lifted under the extrusion action;
d', in the extrusion process, monitoring the change of the settlement displacement value of the underground structure 1 at the side by using the settlement displacement monitoring sensor 3 installed in the step 1;
e' when the non-uniform settlement displacement value corresponding to the disease repair and treatment part is less than an allowable value
When the extrusion is finished;
f', after the extrusion is finished, filling cement slurry into the compaction hole 9 so as to enable the cement slurry and the filling material 10 to be mixed and solidified to form a whole;
and g', after the cement slurry in the compaction hole 9 is completely solidified, repairing and treating the non-uniform settlement diseases of the underground structure 1 at the position.
The embodiment forms a complete set of repairing process method based on a grouting lifting method or a compaction reinforcing method, and the repairing treatment process is implemented outside the underground structure, so that a waterproof layer outside the surface of the underground structure main body can be prevented from being damaged, repairing treatment of non-uniform settlement diseases is realized, and the problem of treating the non-uniform settlement diseases of the underground structure is effectively solved. In actual engineering, when the stratum porosity is high and grouting is easy, a grouting lifting method can be preferentially selected for repair and treatment, and when the stratum is weak, the pores are not developed and grouting is difficult, a compaction reinforcement method can be preferentially selected for repair and treatment.
And 7: in the process of repairing and treating, when the non-uniform settlement displacement values on two sides of the part for repairing and treating the non-uniform settlement diseases are smaller than an allowable value, the repairing and treating are indicated to be finished, and the time when the repairing and treating are finished is recorded
Corresponding non-uniform settlement displacement monitoring value
Namely, the settlement displacement monitoring sensor 3 installed in the step 1 is used for monitoring the moment when the restoration and treatment are finished
The settlement displacement monitoring value of the part
。
(IV) evaluation of repairing and treating effects of non-uniform settlement diseases
And 8: at a certain moment after the repair and treatment of the non-uniform settlement disease of the part to be repaired and treated is finished
And recording the non-uniform settlement displacement monitoring value corresponding to the moment
Namely, the moment is monitored by using the settlement displacement monitoring sensor 3 installed in the step 1
The settlement displacement monitoring value of the part
；
And step 9: obtained according to step 7 and step 8
Time and
non-uniform settlement displacement monitoring value corresponding to moment
And
and establishing a quantitative evaluation index for the repair and treatment effect of the repair and treatment part diseases
；
Step 10: quantitative evaluation index of disease restoration and treatment effect established in step 9
And the allowable value of the index
Comparing, quantitatively judging the repairing and treating effect of the non-uniform settlement disease of the part, and if so, judging
Then the repairing and treating effect is good; if it is
And if so, indicating that the repairing and treating effect is poor, repeating the step 6 and continuing to perform repairing and treating.
Wherein, the quantitative evaluation index of the repair and treatment effect of the non-uniform settlement diseases
The calculation formula of (2) is as follows:
(ii) a Allowable value of disease repair and treatment effect index
The method is an engineering experience value which is comprehensively determined by combining specific underground structure types, sizes, burial depths and influence degrees of non-uniform settlement on the safety and use requirements of the underground structure.
Quantitative evaluation index of non-uniform settlement disease repair and treatment effect in the embodiment
Compared with the non-uniform settlement value at a certain moment after restoration, the method can effectively reflect the change amplitude, change rate and development trend of the non-uniform settlement value, is more suitable for the long-term operation and maintenance process of the underground structure, further realizes the quantitative evaluation of the safe operation and maintenance state of the underground structure after restoration and management, and guides the scientific restoration and management of the non-uniform settlement diseases of the underground structure.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A pre-warning treatment and detection process for non-uniform settlement diseases of underground structures is characterized by comprising the following steps:
step 1: after the underground structure is built, mounting settlement displacement monitoring sensors on two sides of the part predicted to have the non-uniform settlement diseases so as to monitor the non-uniform settlement displacement values on the two sides of the part
And drawing
And monitoring time
Is/are as follows
Monitoring a history curve;
step 2: using pairs of mathematical functions
Carrying out curve fitting on the monitoring process curve, and comparing and selecting to determine the optimal corresponding to the monitoring process curve
Fitting a curve and an optimal fitting function expression;
and step 3: according to
Monitoring the history curve to obtain the final monitoring time
Corresponding non-uniform settlement displacement monitoring value
And according to the optimum
Calculating the fitting curve and the optimal fitting function expression to obtain a certain time in the future
Corresponding non-uniform settlement displacement prediction value
；
And 4, step 4: will monitor the value
And the predicted value
And allowable value of non-uniform sedimentation displacement
Comparing, carrying out early warning evaluation on the non-uniform settlement disease degree of the part, and judging whether to carry out restoration treatment or not;
in the step 4, when the non-uniform settlement disease degree early warning evaluation is carried out,
if it is
If so, the problem of non-uniform settlement disease exists at the part, and the repair and treatment are needed;
if it is
And is and
the problem of non-uniform settlement disease will occur at the part, and the repair and treatment are needed;
if it is
And is and
if so, the part has no problem of non-uniform settlement diseases and does not need to be repaired and treated;
and 5: aiming at the part needing non-uniform settlement disease repair treatment, a grouting lifting method or a compaction reinforcing method is utilized to repair and treat the underground structure on one side of the part with larger settlement displacement;
step 6: in the process of repairing and treating, when the non-uniform settlement displacement value of two sides of the position is less than an allowable value
When the repair is finished, and the time of finishing the repair is recorded
Corresponding non-uniform settlement displacement monitoring value
；
And 7: after the non-uniform settlement disease of the part is repaired and treated at a certain moment
Recording the time of day
Corresponding non-uniform settlement displacement monitoring value
Establishing a quantitative evaluation index of the disease repairing and treating effect of the part
And is combined with the index allowable value
Comparing, and quantitatively judging the repairing and treating effect of the non-uniform settlement diseases at the part;
in step 7, quantitative evaluation index of disease repair and treatment effect
At the moment after the restoration treatment is finished
Corresponding non-uniform settlement displacement monitoring value
And time of day
Corresponding non-uniform settlement displacement monitoring value
Established, the calculation formula is as follows:
；
will be provided with
And the allowable value of the index
When making a comparison, if
Then the repairing and treating effect is good; if it is
If the repair treatment effect is not good, the repair treatment needs to be carried out again.
2. The early warning treatment and detection process for the nonuniform settlement diseases of the underground structure as claimed in claim 1, wherein in step 1, the nonuniform settlement displacement value
The absolute value of the difference between the monitoring displacement data values corresponding to the settlement displacement monitoring sensors on the two sides is shown.
3. The early warning treatment and detection process for the nonuniform settlement diseases of the underground structure as claimed in claim 1, wherein in step 2, the optimal treatment and detection process is adopted
The method for determining the comparison and selection of the fitting curve and the optimal fitting function expression comprises the following steps: will be provided with
Importing the corresponding data of the monitoring process curve into data processing software, and respectively performing curve fitting on the monitoring data by using various mathematical functions to obtain each fitting function expression and corresponding correlation coefficient
(ii) a According to the correlation coefficient
Is compared and selected, and the correlation coefficient
The fitting function expression with the absolute value closest to 1 is the optimal fitting function expression, and the corresponding fitting function curve is the optimal one
And (6) fitting a curve.
4. The process of claim 3, wherein the plurality of mathematical functions include, but are not limited to, linear, hyperbolic, power, exponential, and logarithmic functions.
5. The early warning treatment and detection process for the nonuniform settlement diseases of the underground structure as claimed in claim 1, wherein in the step 5, when the grouting lifting method is adopted for repairing treatment, the process comprises the following steps:
a. grouting holes into the stratum at the lower part of the underground structure at the side with larger settlement displacement value at set intervals;
b. inserting a grouting pipe into the grouting hole, and installing a grout stop plug plugging device at the orifice of the grouting hole;
c. after the grouting pipeline is connected, performing high-pressure grouting on the stratum at the bottom of the underground structure on the side with larger settlement displacement according to a small quantity and multiple principles;
d. in the grouting process, the underground structure at the side is lifted under the pressure action of grouting slurry, and the non-uniform settlement displacement value change of the part is monitored in real time by using the settlement displacement monitoring sensor in the step 1;
e. when the non-uniform settlement displacement monitoring value corresponding to the disease repair treatment part is smaller than an allowable value
When the grouting is finished, removing the grouting device;
f. and after the grouting slurry is completely solidified in the stratum, completing the restoration treatment.
6. The early warning treatment and detection process for the nonuniform settlement diseases of the underground structure as claimed in claim 1, wherein in the step 5, when the compaction reinforcement method is adopted for repairing treatment, the process comprises the following steps:
a', drilling compaction holes in the stratum at the lower part of the underground structure at the side with larger settlement displacement value at set intervals;
b', filling materials are placed into the bottoms of the compaction holes and are extruded in a mechanical mode, so that the filling materials extrude surrounding stratum rock-soil bodies, and the underground structure on one side with larger settlement displacement is lifted under the extrusion action;
c, in the extrusion process, monitoring the change of the non-uniform settlement displacement value of the part in real time by using the settlement displacement monitoring sensor in the step 1;
d', when the non-uniform settlement displacement value corresponding to the disease repair and treatment part is smaller than an allowable value
When the extrusion is finished, filling cement slurry into the compaction holes so as to enable the cement slurry and the filling material to be mixed and solidified into a whole;
e', after the cement grout in the compacted hole is completely solidified, finishing the repair treatment.
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