An evaluation method for the operating status of a highway tunnel drainage system

Abstract

The present invention relates to the field of tunnel drainage evaluation, and provides an evaluation method for the operating state of a highway tunnel drainage system, comprising the following steps: S1. Divide the section where the highway tunnel drainage system to be inspected is located into multiple inspection and evaluation units, calculate the operating state values of the drainage ditch system and the drainage blind pipe system of the highway tunnel drainage system in each inspection and evaluation unit, and calculate the operating state value of each inspection and evaluation unit after weight correction; S2. Based on the operating state values of each inspection and evaluation unit, calculate the comprehensive operating state value of the drainage system in the section described in step S1, and corresponding to the preset grade standard, obtain the comprehensive operating state. Advantages: Quantitatively evaluate the operating state of the highway tunnel drainage system, improve the accuracy and reliability of the evaluation, and provide a reliable reference basis for the repair and maintenance of highway tunnels.

Description

Technical Field

[0001] The present invention relates to the field of tunnel drainage evaluation, and more specifically, to a method for evaluating the operating state of a highway tunnel drainage system. Background Art

[0002] With the advancement of large-scale transportation construction in China, a large number of highway tunnels have entered the operation period. Due to the harsh environment where highway tunnels are located and the rich groundwater environment they face, as the operation time increases, the performance of the tunnel drainage system will inevitably decline continuously. The decline of the drainage system may lead to problems such as poor tunnel drainage and blockage of the tunnel drainage system, and induce diseases such as cracking of tunnel linings, water gushing from the side ditches of tunnel roads, water and mud gushing from tunnel road surfaces, and leakage of tunnel seepage water, threatening the traffic safety of highway tunnels. Therefore, during the operation stage of highway tunnels, it is necessary to carry out reasonable maintenance on the tunnel drainage system to effectively ensure the safety of the tunnel structure and traffic operation.

[0003] At present, the industry norms lack inspection, evaluation methods and requirements for highway tunnel drainage systems, which are mainly reflected in: the detection scheme for tunnel waterproof and drainage facilities in the "Quality Inspection and Evaluation Standards for Highway Engineering" (2017-12) is imperfect; in the "Technical Specification for Highway Tunnel Maintenance" (JTG H12-2015), only inspection and maintenance of highway tunnel drainage systems are required, without quantitative detection and evaluation methods and requirements.

[0004] Since the highway tunnel system is mainly composed of drainage culverts and drainage blind pipes, both of which are concealed works, the traditional manual inspection method cannot accurately reflect the true operating condition of the drainage system. The emergence of modern detection technologies has made up for the deficiencies of traditional methods, but there are still the following problems to be solved: there are a variety of inspection equipment on the market, which are not applicable to the detection of all highway tunnel drainage system blockage conditions; the inspection technology and evaluation method for the drainage blind pipes behind the highway tunnel lining are basically in a blank state in the industry, and there is a lack of an accurate and reliable evaluation method for highway tunnel drainage systems. Summary of the Invention

[0005] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art, and provides a method for evaluating the operating state of a highway tunnel drainage system, which can quantitatively perceive the operating state of the highway tunnel drainage system and provide a basic basis for highway tunnel maintenance.

[0006] An object of the present invention is to provide a method for evaluating the operating status of a highway tunnel drainage system, comprising the following steps: S1, dividing the section where the highway tunnel drainage system to be inspected is located into a plurality of inspection and evaluation units, calculating and obtaining the operating status values of the drainage culvert system and the drainage blind pipe system of the highway tunnel drainage system in each inspection and evaluation unit, and calculating and obtaining the operating status value of each inspection and evaluation unit after weight correction; S2, based on the operating status value of each inspection and evaluation unit, calculating and obtaining the comprehensive operating status value of the drainage system of the section described in step S1, corresponding to the preset grade standard, and obtaining the comprehensive operating status.

[0007] In this technical solution, the highway tunnel drainage system to be inspected is evaluated in a quantitative manner, making the evaluation more accurate and objective, improving the reliability of the evaluation of the highway tunnel drainage system, and providing a strong basic basis for the repair and maintenance of the highway tunnel drainage system.

[0008] Further, step S2 is specifically as follows: S21, calculating the comprehensive operation status value D of the section where the highway tunnel drainage system is located:

[0009]

[0010] Where D i is the operating status value of a single inspection and evaluation unit, and n is the number of inspection and evaluation units;

[0011] S22, establish a grade standard corresponding to the comprehensive operation status value D, and obtain the comprehensive operation status of the highway tunnel section drainage system, wherein the grade standard is specifically:

[0012] When the comprehensive operation status value is between 0 and 20, the highway tunnel drainage system is in a failure state;

[0013] When the comprehensive operation status value is between 20 and 40, the highway tunnel drainage system is in a state of severe drainage difficulties;

[0014] When the comprehensive operation status value is between 40 and 60, the highway tunnel drainage system is in a state of moderate drainage difficulties;

[0015] When the comprehensive operation status value is between 60 and 80, the highway tunnel drainage system is in a state of slight drainage difficulties;

[0016] When the comprehensive operation status value is 80-100, the highway tunnel drainage system is in a smooth drainage state.

[0017] In this technical solution, the operating status of the highway tunnel drainage system is determined based on objective measurement data, and the status is matched with the operating status value, which provides a basis for judgment for staff during evaluation and improves evaluation efficiency.

[0018] Further, each inspection and evaluation unit is divided into n evaluation nodes, and the operation status value Di of a single inspection and evaluation unit is:

[0019]

[0020] where α g is the weight coefficient of the operation status of the drainage culvert system, LG j is the operation status value of the drainage culvert system at the j-th evaluation node, α m is the weight coefficient of the operation status of the blind drainage pipe system, LM j is the operation status value of the blind drainage pipe system at the j-th evaluation node;

[0021] Further, in step S1, it also includes: constructing an inspection index evaluation system for the operation status of the highway tunnel drainage system, and the inspection indexes include: the deformation degree U g1 of the cover plate, the deformation degree U g2 of the side wall, the damage degree U c1 of the cover plate, the damage degree U c2 of the side wall, the groundwater deposition degree U w of the groundwater, the groundwater flow velocity U v and the accumulation degree U d of the silt deposits; the deformation degree U m1 of the blind drainage pipe, the damage degree U m2 of the blind drainage pipe, the blockage degree U d1 of the blind drainage pipe and the water accumulation degree U d2 of the blind drainage pipe.

[0022] Further, each inspection and evaluation unit is divided into n evaluation nodes, and the operation status value LG j of the drainage culvert system at the j-th evaluation node is:

[0023] LG j =α c1 U c1 +α c2 U c2 +α g1 U g1 +α g2 U g2 +α d U d +α v U v +α w U w ,

[0024] where α c1 , α c2 are respectively the damage degree U c1 of the drainage culvert cover plate and the breakage degree U of the drainage culvert side wallc2 Weight coefficient; α g1 , α g2 are respectively the weight coefficients of the deformation degree U g1 of the cover plate and the deformation degree U g2 of the side wall; α w , α v , α d are respectively the weight coefficients of the groundwater deposition degree U w , the groundwater flow velocity U v , and the accumulation degree U d of the silt;

[0025] The operation state value LM of the drainage blind pipe system at the jth evaluation node j is:

[0026] LM j = 0.5(α m1 U m1 + α m2 U m2 ) + 0.5(α d1 U d1 + α d2 U d2 ),

[0027] wherein, α m1 , α m2 , α d1 , α d2 are respectively the weight coefficients of the deformation degree U m1 of the drainage blind pipe, the damage degree U m2 of the drainage blind pipe, the blockage degree U d1 of the drainage blind pipe, and the water accumulation degree U d2 of the drainage blind pipe.

[0028] Furthermore, the deformation degree U m1 of the drainage blind pipe is:

[0029] U m1 = H m2 / (H m1 + H m2 ),

[0030] wherein, H m1 is the minimum vertical clearance inside the drainage blind pipe, and its value is equal to the difference between the drainage pipe diameter d and H m2 , and H m2 is the absolute value of the difference between the pipe bottom elevation value and the lowest elevation value intruding into the pipe;

[0031] The damage degree U m2 of the drainage blind pipe is divided into 5 grades:

[0032] When U m1When it is ≤ 5% or the wall of the drainage blind pipe is intact, U m2 is intact;

[0033] When U m1 is ≤ 5% or there are slight cracks in the wall of the drainage blind pipe, U m2 is slight;

[0034] When 5% < U m1 ≤ 10% or there are local cracks in the wall of the drainage blind pipe and the cracks are not serious, U m2 is average;

[0035] When 10% < U m1 ≤ 30% and there are large - scale cracks in the wall of the drainage blind pipe or the local cracks in the wall of the drainage blind pipe are serious, U m2 is medium;

[0036] When U m1 > 30% or there are wall blocks falling off, U m2 is serious.

[0037] In this technical solution, the measuring tools required for obtaining data on - site are simple, have good applicability, and strong operability. At the same time, it avoids the low work efficiency caused by a wide variety of equipment.

[0038] Furthermore, the weight coefficients α c1 、α c2 、α g1 、α g2 、α w 、α v and α d are calculated according to the entropy weight method;

[0039] When the deformation degree U of the drainage blind pipe m1 is medium or above, the weight coefficients α m1 、α d1 are 1.0;

[0040] When the deformation degree U of the drainage blind pipe m1 is average or below, the weight coefficient α m1 is 0.5, and the weight coefficients α m2 、α d1 and α d2 .

[0041] In this technical solution, determining the calculation weight of the operation state of the drainage blind pipe system based on the deformation degree of the drainage blind pipe more objectively determines the influence degree of different inspection indicators on the operation state value, and further improves the accuracy and objectivity of its calculation results.

[0042] Further, when the number of inspection and evaluation units divided in the section where the highway tunnel drainage system to be inspected is located is greater than or equal to 4, and the operation status values of 4 of them are lower than 20, the comprehensive operation status of the section where the highway tunnel drainage system is located is directly determined to be in a failure state.

[0043] In this technical solution, when the operation status of the inspection and evaluation unit is too poor, the comprehensive operation status of the section is directly determined, thus improving the evaluation efficiency.

[0044] Further, the length of the inspection and evaluation unit is greater than or equal to the distance between adjacent inspection wells and less than or equal to the distance between spaced inspection wells.

[0045] In this technical solution, if the number of inspection wells set in each inspection and evaluation unit is too small, the number of units will increase and the calculation procedure will increase; if the number of inspection wells set in each inspection and evaluation unit is too large, the length of the unit will increase, affecting the accuracy of the results. Therefore, setting an appropriate number of inspection wells in each unit is conducive to improving work efficiency and the accuracy of the results.

[0046] Another object of the present invention is to provide a computer system that runs a program adopting any of the above evaluation methods, and the computer system is provided with an input interface for parameters and an output interface for results.

[0047] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0048] (1) Based on the measured objective data, the highway tunnel drainage system to be inspected is evaluated quantitatively, making the evaluation more accurate and objective, improving the reliability of the evaluation of the highway tunnel drainage system, and providing a strong basis for the repair and maintenance of the highway tunnel drainage system.

[0049] (2) The accuracy of the evaluation is further improved by setting the weight coefficient.

[0050] (3) The measuring tools required for obtaining data on-site are simple, have good applicability, and strong operability, while avoiding the low work efficiency caused by a wide variety of equipment. Description of the Drawings

[0051] Figure 1 For the accumulation degree U of the silt in the drainage culvert system d Calculation schematic diagram.

[0052] Figure 2 For the deformation degree U of the drainage blind pipe m1 Calculation schematic diagram.

[0053] Figure 3 It is a schematic diagram of the inspection process of the operation status of the highway tunnel drainage system.

[0054] Figure 4 It is an evaluation index system for the operation status of the highway tunnel drainage system.

[0055] Figure 5 It is a schematic diagram of a single inspection and evaluation unit. Specific implementation manners

[0056] The attached drawings of the present invention are only for illustrative purposes and should not be construed as a limitation on the present invention. For better illustration of the following embodiments, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0057] Embodiment 1

[0058] This embodiment provides a method for evaluating the operation status of a highway tunnel drainage system, and the steps are as follows:

[0059] S1. Determine the inspection indexes for the operation status of the highway tunnel drainage system. According to the components of the highway tunnel drainage system, it is divided into a drainage culvert system and a drainage blind pipe system. The drainage culvert system includes a drainage culvert and a drainage culvert inspection well, and the drainage blind pipe system includes a lining inspection well, a longitudinal drainage blind pipe and a transverse drainage blind pipe. The inspection indexes of the drainage culvert system and the drainage blind pipe system are shown in Table 1:

[0060] Table 1

[0061]

[0062] Next, the calculation or grade determination of the inspection indexes for the drainage culvert system will be elaborated.

[0063] The deformation degree U of the cover plate g1 Describes the deformation degree of the drainage culvert, and its calculation formula is:

[0064]

[0065] In the formula: H g1 Is the difference between the bottom of the drainage culvert cover plate and the designed elevation, and L g1 Is the designed width value of the drainage culvert cover plate. The damage degree U of the cover plate g1 Is divided into 5 grades, slight (U g1 ≤5%), general (5% < U g1 ≤15%), medium (15% < U g1 ≤30%), severe (30% < U g1 ≤50%), very severe (U g1 >50%).

[0066] The damage degree U of the cover plate c1Describe the damage degree of the cover plate of the drainage culvert by checking the deformation degree U of the cover plate of the drainage culvert g1 Judge, and it is divided into 4 grades, as shown in Table 2:

[0067] Table 2

[0068] <![CDATA[Degree of cover plate deformation U g1 > <![CDATA[Degree of damage to the cover plate U c1 > <![CDATA[U g1 ≤ 5% or there are phenomena such as cracks in the concrete cover plate]]> Slight damage <![CDATA[U g1 ≤ 15% or there is a phenomenon of concrete cover slab cracking]]> General damage <![CDATA[U g1 ≤ 30% or there is a serious cracking phenomenon of the concrete cover plate]]> Severe damage The cover plate is completely broken and collapses and accumulates in the drainage ditch Collapse

[0069] Damage degree U of the side wall c2 Describe the damage degree of the side wall of the drainage culvert by checking the deformation degree U of the side wall of the drainage culvert g2 Judge, and its calculation formula is:

[0070]

[0071] In the formula: H g2 Is the deformation value of the side wall of the drainage culvert, taking the maximum value of the horizontal deformation, L g2 Is the net clearance width value at the bottom of the drainage culvert.

[0072] Deformation degree U of the side wall of the drainage culvert g2 Is divided into 5 grades, as shown in Table 3:

[0073] Table 3

[0074] <![CDATA[Degree of side wall deformation U g2 or deformation phenomenon]]> <![CDATA[Degree of damage U of the side wall c2 > <![CDATA[U g2 ≤ 5% or there are phenomena such as concrete sidewall cracks]]> Slight damage <![CDATA[U g2 ≤15% or there is a phenomenon of concrete side wall cracking]]> General damage <![CDATA[U g2 ≤ 30% or there is a serious phenomenon of concrete cracking on the side wall]]> Severe damage The side wall collapses and accumulates in the drainage ditch Collapse

[0075] Groundwater deposition degree U w Refers to the ratio of the water level height of the drainage culvert in the unit inspection unit to the height of the drainage culvert, and is calculated by the following formula:

[0076] U w =H w / H a ,

[0077] In the formula: H w Is the height of the groundwater level in the drainage culvert, generally determined by actual measurement, H a Is the net clearance height from the bottom of the drainage culvert to the inner side of the cover plate of the drainage culvert. When inspecting the drainage culvert, the accumulated water depth in the inspection well can be observed and measured, or special equipment such as a periscope can be used to explore the accumulated water situation in the drainage culvert, and the average depth is calculated as the value for evaluation according to the inspection results.

[0078] Groundwater deposition degree U w Is divided into 5 grades, and the corresponding calculation results are shown in Table 4:

[0079] Table 4

[0080] <![CDATA[Groundwater deposition degree U w > <![CDATA[Groundwater deposition degree U w Level]]> <![CDATA[U w ≤10%]]> Slight water accumulation or no water <![CDATA[10% < U w ≤ 20%]]> General water accumulation <![CDATA[20% <U w ≤ 50%]]> Moderate water accumulation <![CDATA[50% < U w ≤ 80%]]> Severe water accumulation <![CDATA[U w >80%]]> Deep water accumulation or full water

[0081] Degree of accumulation of silt and blockage U dIt refers to the degree of accumulation of sediment, calcified crystals, construction waste, etc. in the drainage blind ditch within a single inspection unit, which can be evaluated by the degree of accumulation at the clogging point. The specific method is as follows: Use a periscope to inspect and record the accumulation state in the drainage blind ditch from the inspection wellhead. According to the recording results, identify the number of clogging points, and calculate the degree of accumulation at the clogging point based on the accumulation height of the clogging point:

[0082] U ds = H d / H a ,

[0083] In the formula: U ds is the degree of accumulation at a single clogging point, and H a is the net clearance height from the bottom of the drainage blind ditch to the inner side of the drainage blind ditch cover. H d is the height of the clogging point identified through the inspection record results. Only when the bottom of the clogging material is completely blocked to prevent groundwater from passing through can it be determined as a clogging point (as Figure 1 shown). Therefore, the value of H d needs to be determined according to the accumulation situation at the bottom of the drainage blind ditch, and the average height of the accumulation in the cross-sectional direction of the drainage blind ditch is taken through image recognition methods.

[0084] Take the maximum value of U ds within a single inspection unit as the degree of accumulation of clogging material U d of this inspection unit.

[0085] The degree of accumulation of clogging material U d is divided into 5 grades, and the corresponding calculation results are shown in Table 5:

[0086] Table 5

[0087]

[0088]

[0089] The groundwater flow velocity U v refers to the flow velocity of the fissure groundwater behind the tunnel lining after entering the drainage blind ditch, with the unit of m / s, and is calculated by the total flow passing through the cross-section of the drainage blind ditch within a certain period of time.

[0090] The groundwater flow velocity U v is divided into 5 grades, and the corresponding calculation results are shown in Table 6:

[0091] Table 6

[0092] <![CDATA[Groundwater flow velocity U v > <![CDATA[Groundwater flow velocity U v Level]]> <![CDATA[U v <0.1]]> No flow <![CDATA[0.1 < U v ≤ 0.5]]> Slight flow <![CDATA[0.5 < U v ≤ 1.0]]> General flow <![CDATA[1.0 < U v ≤ 3.0]]> General flow <![CDATA[U v >3.0]]> Fast flow

[0093] Next, the calculation of inspection indicators or the determination of grades for the drainage blind pipe system will be elaborated.

[0094] Deformation degree U of the blind drain m1 Describes the deformation degree of the blind drain, and its calculation formula is as follows:

[0095] U m1 = H m2 / (H m1 + H m2 ),

[0096] In the formula: H m1 is the minimum vertical clearance inside the blind drain, and its value is equal to the difference between the diameter d of the drain pipe and H m2 , H m2 is the absolute value of the difference between the pipe bottom elevation value and the lowest elevation value intruding into the pipe, as Figure 2 shown.

[0097] Damage degree U of the blind drain m2 Describes the damage degree of the blind drain wall, and is judged by checking the deformation degree U m1 of the blind drain, and is divided into 5 grades, as shown in Table 7.

[0098] Table 7

[0099]

[0100] Blockage degree U of the blind drain d1 Refers to the proportion of calcified crystals, sand, concrete and other blockages deposited in the blind drain in the water passing area of the drain pipe, and can be calculated by the ratio of the average depth of the sediment to the inner diameter of the drain pipe.

[0101] Water accumulation degree U of the blind drain d2 Is defined as the ratio of the accumulated water volume in the blind drain to the internal volume of the blind drain, and can be calculated by the ratio of the depth of the water accumulation line of the blind drain to the inner diameter of the blind drain.

[0102] S2. Check the operation status of the highway tunnel drainage system and obtain index parameters. The specific steps are as follows (as Figure 3 shown):

[0103] S21. Collect relevant information on the tunnel drainage system to be inspected through methods such as visits and investigations, and formulate a preliminary inspection implementation plan for the drainage system;

[0104] S22. For the tunnel drainage culvert system, use tools such as cameras and measuring rulers to check the cover plate status of the inspection wells of the drainage culvert system, and record the relevant calculation parameter values of the cover plate deformation degree U g1 and the cover plate damage degree U c1 , such as the difference H g1 between the bottom of the drainage culvert cover plate and the design elevation and the design width value L g1 of the drainage culvert cover plate.

[0105] S23. Use a high-definition periscope to conduct a preliminary exploration of the operating status of the drainage culvert from the inspection well of the drainage culvert system. Select the inspection equipment according to the size characteristics of the drainage culvert and the classification of the preliminary exploration results. When the groundwater deposition level in the drainage culvert is initially determined to be severe or above, a fully terrestrial crawling robot can be used for inspection. When the accumulation level of silt in the drainage culvert is slightly accumulated and is in a waterless or shallow water state, a crawler-type pipeline crawling robot can be used for inspection. When the accumulation level of silt in the drainage culvert is medium or above, and when the accumulation level of silt in the drainage culvert is initially determined to be severe or above, a pipeline video detector can be used for inspection. When the inspection equipment cannot move forward in the drainage culvert, a high-pressure water jet method should be used for preliminary dredging.

[0106] S24. Based on the preliminary exploration results of the drainage culvert system, formulate a detailed plan for the inspection of the operating status of the highway tunnel drainage culvert system;

[0107] S25. Detailed plan for the inspection of the operation status of the drainage culvert system. During the inspection, on-site records of the damage degree of the side wall U c2 , side wall deformation degree U g2 The values of parameters related to the sedimentation state of the drainage ditch system are recorded on site, such as the height H of the underground level line in the drainage ditch. w , Clearance height H from the bottom of the drainage ditch to the inside of the drainage ditch cover a and the blockage point height H d .

[0108] S26. For the blind drainage pipe system of the tunnel, a pipeline video detector with an inspection camera that can enter the interior of the blind drainage pipe is selected as the inspection method. According to the layout characteristics of the lining inspection well, an inspection plan for the blind drainage pipe system is formulated, including components such as the longitudinal blind drainage pipe, the transverse blind drainage pipe, and the lining inspection well;

[0109] S27. Check and record the status of the lining inspection well. If the lining inspection well is full of water or has silt accumulation, it should be cleaned first until it is possible to enter the lining inspection well for inspection;

[0110] S28, the longitudinal drainage blind pipe and the transverse drainage blind pipe are gradually pushed forward from the drainage pipe opening of the lining inspection well, and the camera is moved forward in the drainage pipe, and the operation status of the drainage blind pipe is checked through the recording system of the pipeline video detector;

[0111] S29. Obtain and calculate the structural status of the drainage blind pipe system based on the inspection results, and preliminarily obtain the deformation degree U of the drainage blind pipe m1 , Drainage blind pipe damage degree U m2 , Drainage blind pipe blockage degree U d1, the water accumulation degree U of the drainage blind pipe d2 Parameter values required for calculating indicators such as the minimum vertical clearance H inside the drainage blind pipe m1 And the absolute value H of the difference between the elevation value at the bottom of the pipe and the lowest elevation value intruding into the pipe m2 .

[0112] S3. Evaluate the operation status of the highway tunnel drainage system, specifically:

[0113] S31. Construct an index evaluation system for the operation status of the highway tunnel drainage system; specifically:

[0114] S311. According to the inspection indicators of the operation status of the highway tunnel drainage system, based on the characteristics and disease status of the inspected tunnel drainage system, screen the core evaluation indicators of the structural status and sedimentation status;

[0115] S312. Establish an evaluation index system for the operation status of the highway tunnel drainage system, as Figure 4 shown.

[0116] S32. Divide the highway tunnel section to be inspected into multiple inspection and evaluation units, calculate the operation status values of the drainage ditch system and drainage blind pipe system of the highway tunnel drainage system in each inspection and evaluation unit, and calculate the operation status value of each inspection and evaluation unit through weight correction; specifically:

[0117] S321. Divide the highway tunnel section to be inspected into n inspection and evaluation units. In this embodiment, as Figure 5 shown, take the interval between the drainage blind pipe inspection wells or drainage ditch inspection wells as an inspection and evaluation unit. It can be understood that each inspection and evaluation unit includes 3 drainage blind pipe inspection wells and 3 drainage ditch inspection wells.

[0118] S322. Divide a single inspection and evaluation unit into n evaluation nodes. In this embodiment, the length of each evaluation node is 2Lg / n or 2Lm / n, and the operation status value LG of the drainage ditch system at the jth evaluation node j is calculated by the following formula:

[0119] LG j =α c1 U c1 +α c2 U c2 +α g1 U g1 +α g2 U g2 +α d U d +α v U v +α w Uw ,

[0120] Where: α c1 , α c2 are respectively the influence weights of the damage degree U c1 of the drainage blind ditch cover plate and the damage degree U c2 of the side wall of the drainage blind ditch; α c1 , α c2 are respectively the influence weights of the deformation degree U g1 of the cover plate and the deformation degree U g2 of the side wall; α w , α v , α d are respectively the influence weights of the groundwater deposition degree U w , the groundwater flow velocity U v , and the accumulation degree U d of the silt; LG j is the operation status value of the drainage blind ditch system at the jth evaluation node.

[0121] The operation status value LM j of the drainage blind pipe system at the jth evaluation node is calculated by the following formula:

[0122] LM j = 0.5(α m1 U m1 + α m2 U m2 ) + 0.5(α d1 U d1 + α d2 U d2 ),

[0123] Where: α m1 , α m2 , α d1 , α d2 are respectively the weight coefficients of the deformation degree U m1 of the drainage blind pipe, the damage degree U m2 of the drainage blind pipe, the blockage degree U d1 of the drainage blind pipe, and the water accumulation degree U d2 of the drainage blind pipe; LM j is the operation status value of the drainage blind pipe system at the jth evaluation node.

[0124] The operation status value Di of a single inspection and evaluation unit is calculated by the following formula:

[0125]

[0126] Where: α g is the weight coefficient of the operation status of the drainage blind ditch system, LG jis the operation status value of the drainage culvert system for the jth evaluation node, and α m is the weight coefficient of the operation status of the drainage blind pipe system, LM j is the operation status value of the drainage blind pipe system for the jth evaluation node, and n is the number of evaluation nodes in a single inspection and evaluation unit.

[0127] Next, the determination of the weight coefficient in the above formula will be elaborated.

[0128] For the drainage culvert system, the breakage and collapse of the cover plate will cause the siltation of the drainage culvert and the damage of the road surface. The breakage of the side wall will lead to the collapse and accumulation of the drainage culvert, affecting its drainage function. The large deformation of the rigid concrete structure of the drainage culvert may cause structural damage. When the accumulation of the siltation in the drainage culvert exceeds a certain extent, it will affect the cross-sectional area of the water passage of the drainage culvert. Therefore, the importance degree of the evaluation indexes of the operation status of the drainage culvert system is in turn: the degree of siltation accumulation U d , the degree of groundwater deposition U w , the groundwater flow velocity U v , the degree of cover plate damage U c1 , the degree of side wall damage U c2 , the degree of cover plate deformation U g1 , the degree of side wall deformation U g2 . According to the sorting of the importance degree, the index values are normalized, and the weight coefficients of each index are calculated by the entropy weight method. The specific steps are as follows:

[0129] Select n inspection and evaluation node samples, and there are m evaluation index values of the operation status of the drainage culvert system in each inspection and evaluation node sample. For the drainage culvert system, m = 7. The original index matrix is constructed and normalized to obtain the normalized value: In the formula: x ij is the standard value of the jth evaluation node on the ith evaluation index; calculate the entropy values e ij of the m evaluation indexes of the operation status of the drainage culvert system respectively, and its calculation formula is: According to the entropy weight coefficients v j of the 7 evaluation indexes of the operation status of the drainage culvert system, the calculation formula is: In the formula: e j is the entropy value of the jth evaluation index of the operation status of the drainage culvert system.

[0130] For the drainage blind pipe system, considering that in the established inspection index evaluation system, the deformation and blockage of the drainage blind pipe will both cause the reduction of the cross-sectional area of the water passage. Therefore, the core evaluation indexes are the degree of deformation U m1 of the drainage blind pipe and the degree of blockage U d1 of the drainage blind pipe. When the degree of deformation of the drainage blind pipe is judged to be medium or above, at this time, the weight coefficient αm1 , α d1 is 1.0, that is, the operation status of the drainage blind pipe system is completely determined by these two indicators; when the deformation degree of the drainage blind pipe U m1 When it is normal or below normal, the deformation degree of drainage blind pipe is U m1 The weight coefficient is 0.5, and the order of importance is: drainage blind pipe blockage degree U d1 , Drainage blind pipe damage degree U m2 , Water accumulation degree of drainage blind pipe U d2 The weight coefficients of the above three evaluation indicators are calculated by the entropy weight method. The specific steps are consistent with the drainage culvert system, and the number of operating status indicator values m = 3.

[0131] S33, based on the operating status value of each inspection and evaluation unit, calculate the comprehensive operating status value D of the entire highway tunnel drainage system, and obtain the comprehensive operating status corresponding to the preset grade standard. The comprehensive operating status value D is calculated by the following formula:

[0132]

[0133] The grade standards are:

[0134] When the comprehensive operation status value is between 0 and 20, the highway tunnel drainage system is in a failure state;

[0135] When the comprehensive operation status value is between 20 and 40, the highway tunnel drainage system is in a state of severe drainage difficulties;

[0136] When the comprehensive operation status value is between 40 and 60, the highway tunnel drainage system is in a state of moderate drainage difficulties;

[0137] When the comprehensive operation status value is between 60 and 80, the highway tunnel drainage system is in a state of slight drainage difficulties;

[0138] When the comprehensive operation status value is 80-100, the highway tunnel drainage system is in a smooth drainage state.

[0139] Furthermore, when the section where the highway tunnel drainage system to be inspected is located is divided into a number of inspection and evaluation units that is greater than or equal to 4, and 4 of the operating status values are lower than 20, the comprehensive operating status of the section where the highway tunnel drainage system is located is directly judged to be a failure state.

[0140] The evaluation method provided in this embodiment is based on the measured objective data, and evaluates the highway tunnel drainage system to be inspected in a quantitative manner, making the evaluation more accurate and objective, improving the reliability of the evaluation of the highway tunnel drainage system, and providing a strong basis for the repair and maintenance of the highway tunnel drainage system. Moreover, the accuracy of the evaluation is further improved by setting the weight coefficient. At the same time, the measuring tools required for obtaining data on site are simple, have good applicability, and strong operability, while avoiding the low work efficiency caused by a wide variety of equipment.

[0141] Embodiment 2

[0142] This embodiment provides a computer system that runs a program using the evaluation method provided in Embodiment 1. The computer system is provided with an input interface for parameters and an output interface for results.

[0143] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solutions of the present invention, rather than limitations on the specific implementation manners of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the claims of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An evaluation method for the operating state of a highway tunnel drainage system, characterized in that It includes the following steps: S1. Divide the section where the highway tunnel drainage system to be inspected is located into multiple inspection and evaluation units, calculate the operation status values of the drainage ditch system and the drainage blind pipe system of the highway tunnel drainage system in each inspection and evaluation unit, and calculate the operation status value of each inspection and evaluation unit after weight correction; Construct an evaluation system for inspection indicators of the operation status of the highway tunnel drainage system. The inspection indicators include: the deformation degree U of the drainage culvert cover plate g1 , the deformation degree U of the side wall of the drainage culvert g2 , the damage degree U of the drainage culvert cover plate c1 , the damage degree U of the side wall of the drainage culvert c2 , the groundwater deposition degree U w , the groundwater flow velocity U v , and the accumulation degree U of the siltation d ; the deformation degree U of the drainage blind pipe m1 , the damage degree U of the drainage blind pipe m2 , the blockage degree U of the drainage blind pipe d1 , and the water accumulation degree U of the drainage blind pipe d2 ; Each inspection and evaluation unit is divided into n evaluation nodes, and the operation status value LG of the drainage ditch system at the j-th evaluation node j is as follows: LG j = α c1 U c1 + α c2 U c2 + α g1 U g1 + α g2 U g2 + α d U d + α v U v + α w U w where α c1 and α c2 are the weight coefficients of the damage degree U c1 of the drainage blind ditch cover plate and the damage degree U c2 of the drainage blind ditch side wall respectively; α g1 and α g2 are the weight coefficients of the deformation degree U g1 of the drainage blind ditch cover plate and the deformation degree U g2 of the drainage blind ditch side wall respectively; α w and α v and α d are the weight coefficients of the groundwater deposition degree U w the groundwater flow velocity U v and the accumulation degree U d of the silt respectively; The operating status value LM of the drainage blind pipe system at the j-th evaluation node j is as follows: LM j = 0.5(α m1 U m1 + α m2 U m2 ) + 0.5(α d1 U d1 + α d2 U d2 ) where α m1 , α m2 , α d1 , α d2 are the weight coefficients of the deformation degree U m1 of the drainage blind pipe, the damage degree U m2 of the drainage blind pipe, the blockage degree U d1 of the drainage blind pipe, and the water accumulation degree U d2 of the drainage blind pipe, respectively; Weight coefficient α c1 , α c2 , α g1 , α h2 , α w , α v and α d are calculated according to the entropy weight method; When the damage degree U of the drainage blind pipe m1 is medium or above, the weight coefficients α m1 and α d1 are 1.0, that is, the operation state value of the drainage blind pipe system is completely determined by the deformation degree U m1 of the drainage blind pipe and the blockage degree U d1 of the drainage blind pipe; When the damage degree U of the drain blind pipe m1 is general or below general, the weight coefficient α m1 is 0.5, and the weight coefficient α m2 , α d1 and α d2 are calculated according to the entropy weight method; S2. Based on the operation status values of each inspection and evaluation unit, calculate the comprehensive operation status value of the drainage system in the section described in step S1, and obtain the comprehensive operation status corresponding to the preset grade standard.

2. The evaluation method for the operating state of the highway tunnel drainage system according to claim 1, characterized in that, Step S2 is specifically as follows: S21. Calculate the comprehensive operation status value D of the entire section where the highway tunnel drainage system is located; Where D i is the operation status value of a single inspection and evaluation unit, and n is the number of inspection and evaluation units; S22. Establish a grade standard corresponding to the comprehensive operation status value D, and obtain the comprehensive operation status of the highway tunnel section drainage system.

3. The evaluation method for the operating state of the highway tunnel drainage system according to claim 1, characterized in that Divide each inspection and evaluation unit into n evaluation nodes, and the operation status value D of a single inspection and evaluation unit i is as follows: where α g is the weight coefficient of the operation state of the subsurface drainage ditch system, LG j is the operation state value of the subsurface drainage ditch system at the j-th evaluation node, α m is the weight coefficient of the operation state of the blind drainage pipe system, LM j is the operation state value of the blind drainage pipe system at the j-th evaluation node.

4. The evaluation method for the operation state of the highway tunnel drainage system according to claim 1, characterized in that The deformation degree U of the blind drainage pipe m1 is as follows: U m1 = H m2 / (H m1 + H m2 ) Wherein, H m1 is the minimum vertical clearance inside the blind drain for drainage, and its value is equal to the difference between the diameter d of the drain pipe and H m2 , and H m2 is the absolute value of the difference between the elevation value of the pipe bottom and the lowest elevation value intruding into the pipe.

5. The evaluation method for the operation status of the highway tunnel drainage system according to claim 2, wherein When the number of inspection and evaluation units divided in the section where the highway tunnel drainage system to be inspected is located is greater than or equal to 4, and the operation status values of 4 of them are lower than 20, the comprehensive operation status of the section where the highway tunnel drainage system is located is directly determined to be in a failure state.

6. The evaluation method for the operating state of the highway tunnel drainage system according to any one of claims 1 to 5, characterized in that, The length of the inspection and evaluation unit is greater than or equal to the distance between adjacent inspection wells and less than or equal to the distance between spaced inspection wells.

7. A computer system that runs a program using the evaluation method according to any one of claims 1 to 6, and the computer system is provided with an input interface for parameters and an output interface for results.

Images