Tunnel hole slag high-quality utilization approach evaluation method

Abstract

The invention provides a tunnel hole slag high-quality utilization approach evaluation method, and belongs to the field of tunnel hole slag utilization. The method comprises the following steps: carrying out first judgment on all tunnel hole slag to judge whether a judgment result meets conditions or not, if so, carrying out next judgment on all the tunnel hole slag, and otherwise, taking all the tunnel hole slag as abandoned slag; third judgment is conducted on the first-section mileage tunnel hole slag; performing second judgment on the next section of mileage, if the judgment result meets the condition, performing third judgment on the section of mileage, and completing utilization path evaluation of the section of mileage; if not, only harmful substance index detection is carried out, if the detection result meets the requirement of the previous mileage utilization path of the tunnel hole slag, the previous mileage utilization path continues to be used, and if not, physical and mechanical index detection is carried out, and evaluation of the mileage tunnel hole slag utilization path is completed. Accurate suggestions are provided for tunnel hole slag utilization ways, and high-quality utilization of the tunnel hole slag is promoted.

Description

Technical Field

[0001] The invention belongs to the field of tunnel slag utilization, and in particular relates to an evaluation method for high-quality utilization of tunnel slag. Background Art

[0002] At present, it is generally believed that tunnel slag is a kind of waste slag, which is generally of low strength and contains a lot of impurities such as powder and soil. Using it as a parent material will result in unqualified quality of finished machine-made products, and it can only be used as roadbed filler or directly discarded. This is also the case from the current status of tunnel slag utilization. Most projects involving tunnel slag utilization only use tunnel slag as roadbed fill, and a few are used to produce sand and gravel aggregates, ballast, stone powder, etc. for concrete. The research on the use of tunnel slag to make ballast, sand and gravel aggregates, fillers, and stone powder on the project site is not in-depth enough, and there is no standard document as a reference. Generally, only the surrounding rock grade and strength are used as the basis for whether it can be used, and other important indicators such as tunnel slag lithology and block dry density are not considered, which affects the transportation and classified storage of tunnel slag, and to a large extent restricts the utilization rate and utilization effect of tunnel slag. In the existing technology, there is no unified understanding on the high-quality utilization methods and grading assessment of tunnel slag, and no technical standards or specifications in related aspects have been seen.

[0003] Therefore, the present invention proposes a method for evaluating the high-quality utilization of wide-range stepped tunnel slag, which includes four utilization methods: aggregate, ballast, filler and stone powder. The evaluation method includes three levels, namely the first judgment, the second judgment and the third judgment. Through the evaluation method, the utilization methods of tunnel slag can be quickly identified to guide on-site tunnel slag transportation. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method for evaluating high-quality utilization approaches of tunnel slag, so as to solve the problem of rapid identification of utilization approaches of tunnel slag at a construction site.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] This scheme provides a method for evaluating the high-quality utilization of tunnel slag, including the following steps:

[0007] S1, using the first judgment standard value to make a first judgment on the tunnel slag, and judging whether the first judgment result meets any utilization path requirement, if so, proceeding to step S2, otherwise, treating the tunnel slag that does not meet any utilization path requirement as abandoned slag, and ending the process;

[0008] S2, using the third judgment standard value to perform a third judgment on the first mileage of the tunnel slag that meets the judgment condition of S1, to obtain a third judgment result of the first mileage of the tunnel slag, and then proceed to step S3;

[0009] S3, using the second judgment standard value to make a second judgment on the tunnel slag of the next section of mileage, and compare the second judgment result of the section of mileage with the third judgment result of the previous section of mileage, to determine whether the comparison result meets the first preset condition, if so, then make a third judgment on the section of mileage, complete the judgment of the utilization path of the tunnel slag of the section of mileage, and enter step S5, otherwise, enter step S4;

[0010] S4, according to the judgment result of S3, only the harmful substance index detection is performed on the section of mileage, and it is determined whether the harmful substance index detection result meets the second preset condition. If so, the third judgment result of the previous section of mileage is used to complete the determination of the utilization method of the tunnel slag of the section of mileage, and the process goes to step S5; otherwise, the physical and mechanical index detection is performed on the section of mileage, and the determination of the utilization method of the tunnel slag of the section of mileage is completed, and the process goes to step S5;

[0011] S5. Determine whether the mileage of the tunnel slag that has not been detected is 0m. If so, complete the judgment of the utilization path of the tunnel slag of all mileages and end the process, otherwise return to step S3.

[0012] The beneficial effects of the present invention are as follows: by utilizing the method for evaluating high-quality utilization approaches of tunnel slag, tunnel construction personnel can complete the first judgment on all mileage of tunnel slag before tunnel construction, and can determine whether all tunnel slag can be utilized in four approaches such as aggregate, ballast, filler and stone powder before tunnel excavation. The advanced geological prediction data of tunnel slag and the tunnel slag detection index can be obtained at the construction site to obtain the second judgment parameter and the third judgment parameter, and the second judgment parameter and the third judgment parameter are respectively compared with the second judgment standard value and the third judgment standard value to complete the second judgment and the third judgment of the tunnel slag. The present invention can realize the rapid judgment of the utilization approach of tunnel slag to guide the transportation of tunnel slag at the construction site. The three-level evaluation method for the utilization approach of tunnel slag is progressive, which reduces the workload at the tunnel construction site, and can provide accurate suggestions for the utilization approach of tunnel slag, thereby promoting the high-quality utilization of tunnel slag.

[0013] Furthermore, the S1 comprises the following steps:

[0014] S101, collecting tunnel slag geological survey data before tunnel construction, and using the geological survey data as the first judgment parameter;

[0015] S102. Compare the first judgment parameter with the first judgment standard value to make a first judgment on the four utilization methods of tunnel slag aggregate, ballast, filler and stone powder, and judge whether the first judgment result meets the parameter requirement of any utilization method. If so, go to step S2; otherwise, regard the tunnel slag as waste and end the process.

[0016] The beneficial effect of the above further scheme is: by collecting geological survey data to obtain the first judgment parameters, and providing the comparative data required for the first judgment of the tunnel slag of all mileages at the construction site, the tunnel construction personnel can judge whether the tunnel slag of all mileages can be used in a high-quality way before tunnel construction.

[0017] Furthermore, the specific process of the first judgment is as follows:

[0018] When the first judgment parameter meets the first judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate;

[0019] When the first judgment parameter meets the first judgment standard value of the ballast utilization method, the tunnel slag of the mileage section is used to produce ballast;

[0020] When the first judgment parameter meets the first judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce fillers;

[0021] When the first judgment parameter meets the first judgment standard value of the stone powder utilization method, the tunnel slag of this mileage section is used to produce stone powder.

[0022] The beneficial effect of the above further scheme is: by comparing the data of tunnel slag at the construction site with the first judgment standard value, a first judgment on the utilization method of the tunnel slag is made, and the first judgment result is used to determine whether the tunnel slag of the entire mileage can be utilized in a high-quality manner.

[0023] Further, the S2 comprises the following steps:

[0024] S201, using detection equipment to obtain detection data of tunnel slag at the construction site, and using the obtained detection data as the third judgment parameter, wherein the detection data includes physical and mechanical indicators and harmful substance indicators, the physical and mechanical indicators include saturated uniaxial compressive strength, block dry density, water absorption rate and softening coefficient, and the harmful substance indicators include mica content and sulfate content;

[0025] S202, comparing the third judgment parameter of the first section of tunnel slag with the third judgment standard value to make a third judgment on the four utilization methods of the first section of tunnel slag: aggregate, ballast, filler and stone powder, and obtain the third judgment result, and enter step S3.

[0026] The beneficial effect of the above further scheme is: using the detection equipment to obtain detection data, obtain the third judgment parameter, and complete the third judgment of the utilization path of the tunnel slag in the first section of mileage, providing comparison data for comparing the second judgment result of the tunnel slag in the next section of mileage with the third judgment result of the tunnel slag in the first section of mileage.

[0027] Furthermore, S3 comprises the following steps:

[0028] S301, using the tunnel slag of the next mileage to obtain advanced geological prediction data at the construction site, and calculate the prediction index of the saturated uniaxial compressive strength of the tunnel slag and the prediction index of the dry density of the tunnel slag block;

[0029] S302, obtaining the lithology of the tunnel slag using the tunnel slag photograph, and determining the surrounding rock grade by continuing to use the first judgment standard value;

[0030] S303, using the prediction index of saturated uniaxial compressive strength of tunnel slag, the prediction index of dry density of tunnel slag block, lithology of tunnel slag and grade of surrounding rock as the second judgment parameter;

[0031] S304, comparing the second judgment parameter with the second judgment standard value to make a second judgment on the four utilization methods of tunnel slag aggregate, ballast, filler and stone powder for this section of mileage, and obtaining a second judgment result;

[0032] S305. Compare the second judgment result with the third judgment result of the previous mileage to determine whether the comparison result meets the first preset condition. If so, use the tunnel slag of this mileage to obtain the third judgment parameter of this mileage, and make a third judgment on this mileage to complete the judgment of the utilization method of the tunnel slag of this mileage, and enter step S5. Otherwise, enter step S4.

[0033] The beneficial effect of the above further scheme is: by calculating the prediction index of the saturated uniaxial compressive strength of tunnel slag and the prediction index of the dry density of the tunnel slag block, identifying the lithology of the tunnel slag and determining the grade of the surrounding rock of the tunnel slag, the second judgment parameter is obtained, and the comparison data of the second judgment of the tunnel slag is obtained, so that the second judgment result of each section of tunnel slag must be compared with the third judgment result of the tunnel slag of the previous section of mileage, so that each section of tunnel slag can accurately complete the judgment of the utilization path, and judge whether to enter step S4 or step S5 next according to the comparison result.

[0034] Furthermore, the prediction index of the saturated uniaxial compressive strength of tunnel slag includes the compressive strength of sandstone under static elastic modulus, the compressive strength of sandstone under dynamic elastic modulus, the compressive strength of slate under static elastic modulus, the compressive strength of slate under dynamic elastic modulus, the compressive strength of granite under static elastic modulus and the compressive strength of granite under dynamic elastic modulus;

[0035] The fitting expression of the compressive strength of sandstone under static elastic modulus is as follows:

[0036] R C11 =1.99462+2.41088E1-0.00581E1 2

[0037] Among them, R C11It indicates the compressive strength of sandstone under static elastic modulus;

[0038] The fitting expression of the compressive strength of the sandstone under the dynamic elastic modulus is as follows:

[0039]

[0040] Among them, R C12 It represents the compressive strength of sandstone under dynamic elastic modulus;

[0041] The fitting expression of the compressive strength of slate under static elastic modulus is as follows:

[0042] R C21 =0.58869+2.60292E1-0.00169E1 2

[0043] Among them, R C21 It indicates the compressive strength of slate under static elastic modulus;

[0044] The fitting expression of the compressive strength of slate under dynamic elastic modulus is as follows:

[0045]

[0046] Among them, R C22 It indicates the compressive strength of slate under dynamic elastic modulus;

[0047] The fitting expression of the compressive strength of granite under static elastic modulus is as follows:

[0048] R C31 =42.28012+14.50868E1+0.009185E1 2

[0049] Among them, R C31 It indicates the compressive strength of granite under static elastic modulus;

[0050] The fitting expression of the compressive strength of granite under dynamic elastic modulus is as follows:

[0051]

[0052] Among them, R C32 It indicates the compressive strength of granite under dynamic elastic modulus;

[0053] Among them, E1 is the static elastic modulus of rock, and E2 is the dynamic elastic modulus of rock.

[0054] The dry density prediction index of the tunnel slag block includes a sandstone block dry density prediction index, a granite block dry density prediction index and a slate block dry density prediction index;

[0055] The expression of the sandstone block dry density prediction index is as follows:

[0056]

[0057] Among them, ρ1 represents the prediction index of sandstone block dry density;

[0058] The expression of the granite block dry density prediction index is as follows:

[0059]

[0060] Among them, ρ2 represents the prediction index of granite block dry density;

[0061] The expression of the slate block dry density prediction index is as follows:

[0062]

[0063] Among them, ρ3 represents the prediction index of slate block dry density;

[0064] Among them, V P is the rock longitudinal wave, V S It is rock transverse wave.

[0065] The beneficial effect of the above further scheme is: by calculating the prediction index of the saturated uniaxial compressive strength of tunnel slag and the prediction index of the dry density of the tunnel slag block, a second judgment parameter is provided for the second judgment of the utilization method of the tunnel slag.

[0066] Furthermore, the specific process of the second judgment is as follows:

[0067] When the second judgment parameter meets the second judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate;

[0068] When the second judgment parameter meets the second judgment standard value of the ballast utilization method, the tunnel slag of this section of mileage is used to produce ballast;

[0069] When the second judgment parameter meets the second judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce fillers;

[0070] When the second judgment parameter meets the second judgment standard value of the stone powder utilization method, the tunnel slag of this mileage section is used to produce stone powder.

[0071] The beneficial effect of the above further scheme is: using the second judgment parameter to perform a second judgment on the tunnel slag, and obtaining a second judgment result on the tunnel slag.

[0072] Further, the S4 comprises the following steps:

[0073] S401, using the tunnel slag of the section that does not meet the first preset condition in S3 to obtain a harmful substance index, and only performing the harmful substance index detection in the third judgment on the section to determine whether the harmful substance index detection result meets the second preset condition, if so, using the third judgment result of the previous section to complete the determination of the utilization path of the tunnel slag of the section, and enter step S5, otherwise, enter S402;

[0074] S402, using the tunnel slag of this section to obtain physical and mechanical indicators, and performing the physical and mechanical indicator detection in the third judgment on this section of mileage, completing the judgment of the utilization method of the tunnel slag of this section of mileage, and entering step S5.

[0075] The beneficial effect of the above further scheme is: when the tunnel slag that does not meet the preset conditions in S3 is subjected to the third judgment, the first step is to adopt the method of only detecting the harmful substance indicators in the third judgment. If it is consistent with the utilization method obtained by the harmful substance indicator detection result in the third judgment result of the previous mileage, then the physical and mechanical indicator detection can be omitted for this section of mileage, and the third judgment result of the previous mileage can be directly used, saving construction time and construction costs.

[0076] Furthermore, the specific process of the third judgment is as follows:

[0077] When the third judgment parameter meets the third judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate;

[0078] When the third judgment parameter meets the third judgment standard value of the ballast utilization method, the tunnel slag of this section of mileage is used to produce ballast;

[0079] When the third judgment parameter meets the third judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce filler;

[0080] When the third judgment parameter meets the third judgment standard value of the stone powder utilization method, the tunnel slag of this section of mileage is used to produce stone powder.

[0081] The beneficial effect of the above further scheme is: using the third judgment parameter to perform a third judgment on the tunnel slag, and obtaining a third judgment result of the tunnel slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Figure 1 This is a flow chart of the method for evaluating high-quality utilization of tunnel slag. DETAILED DESCRIPTION

[0083] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0084] Example

[0085] like Figure 1 As shown, the present invention provides a method for evaluating the high-quality utilization of tunnel slag, and the implementation method is as follows:

[0086] S1, using the first judgment standard value to make a first judgment on the tunnel slag, and judging whether the first judgment result meets any utilization path requirement, if so, proceeding to step S2, otherwise, the tunnel slag that does not meet any utilization path requirement is regarded as abandoned slag, and the process is terminated, and the implementation method is as follows:

[0087] S101, collecting tunnel slag geological survey data before tunnel construction, and using the geological survey data as the first judgment parameter;

[0088] S102. Compare the first judgment parameter with the first judgment standard value to make a first judgment on the four utilization methods of tunnel slag aggregate, ballast, filler and stone powder, and judge whether the first judgment result meets the parameter requirement of any utilization method. If so, go to step S2; otherwise, regard the tunnel slag as waste and end the process.

[0089] In this embodiment, the specific process of the first judgment is as follows:

[0090] When the first judgment parameter meets the first judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate;

[0091] When the first judgment parameter meets the first judgment standard value of the ballast utilization method, the tunnel slag of the mileage section is used to produce ballast;

[0092] When the first judgment parameter meets the first judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce fillers;

[0093] When the first judgment parameter meets the first judgment standard value of the stone powder utilization method, the tunnel slag of this section of mileage is used to produce stone powder;

[0094] For example, the first judgment standard value of aggregate utilization is:

[0095] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 45MPa, and the dry density of tunnel slag block is greater than or equal to 2600kg / m3 2. The surrounding rock grade of tunnel slag is greater than or equal to III and the lithology of tunnel slag does not belong to high-risk and sub-high-risk rock;

[0096] For example, the first judgment standard value of ballast utilization path is:

[0097] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 60MPa, and the dry density of tunnel slag block is greater than or equal to 2600kg / m 3 2. The surrounding rock grade of tunnel slag is greater than or equal to III and the lithology of tunnel slag does not belong to high-risk and sub-high-risk rock;

[0098] For example, the first judgment standard value of the filler utilization method is specifically:

[0099] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 10MPa, and the dry density of tunnel slag block is greater than or equal to 2400kg / m 3 2. The tunnel slag surrounding rock grade is greater than or equal to IV and the lithology of the tunnel slag does not belong to the high-risk rock category;

[0100] For example, the first judgment standard value of the stone powder utilization path is:

[0101] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 45MPa, and the dry density of tunnel slag block is greater than or equal to 2600kg / m 3 2. The surrounding rock grade of tunnel slag is greater than or equal to III and the lithology of tunnel slag does not belong to high-risk and sub-high-risk rock;

[0102] The second most dangerous rocks include mudstone, clay, shale, sandstone, marl, argillaceous limestone, mylonite, amphibolite, schist, fine sandstone, salt rock and chlorite, etc. The most dangerous rocks include mudstone, clay, salt rock and chlorite, etc.

[0103] Among them, Table 1 is the basic classification of surrounding rock grades;

[0104] Table 1

[0105]

[0106]

[0107] S2, using the third judgment standard value to perform a third judgment on the first section of tunnel slag that meets the judgment condition of S1, obtain the third judgment result of the first section of tunnel slag, and enter step S3, the implementation method of which is as follows:

[0108] S201, using detection equipment to obtain detection data of tunnel slag at the construction site, and using the obtained detection data as the third judgment parameter, wherein the detection data includes physical and mechanical indicators and harmful substance indicators, the physical and mechanical indicators include saturated uniaxial compressive strength, block dry density, water absorption rate and softening coefficient, and the harmful substance indicators include mica content and sulfate content;

[0109] S202, comparing the third judgment parameter of the first section of tunnel slag with the third judgment standard value, so as to make a third judgment on the four utilization methods of the first section of tunnel slag aggregate, ballast, filler and stone powder,

[0110] Among them, the length of a mileage is determined according to the actual situation of the construction site.

[0111] S3, using the second judgment standard value to make a second judgment on the tunnel slag of the next section of mileage, and compare the second judgment result of this section of mileage with the third judgment result of the previous section of mileage, and judge whether the comparison result meets the first preset condition. If so, make a third judgment on this section of mileage, complete the judgment of the utilization path of the tunnel slag of this section of mileage, and enter step S5; otherwise, enter step S4, and the implementation method thereof is as follows:

[0112] S301, using the tunnel slag of the next mileage to obtain advanced geological prediction data at the construction site, and calculate the prediction index of the saturated uniaxial compressive strength of the tunnel slag and the prediction index of the dry density of the tunnel slag block;

[0113] S302, obtaining the lithology of the tunnel slag using the tunnel slag photograph, and determining the surrounding rock grade by continuing to use the first judgment standard value;

[0114] S303, using the prediction index of saturated uniaxial compressive strength of tunnel slag, the prediction index of dry density of tunnel slag block, lithology of tunnel slag and grade of surrounding rock as the second judgment parameter;

[0115] S304, comparing the second judgment parameter with the second judgment standard value to make a second judgment on the four utilization methods of tunnel slag aggregate, ballast, filler and stone powder for this section of mileage, and obtaining a second judgment result;

[0116] S305, comparing the second judgment result with the third judgment result of the previous mileage, and judging whether the comparison result meets the first preset condition. If so, using the tunnel slag of the mileage section to obtain the third judgment parameter of the mileage section, and performing the third judgment on the mileage section, completing the judgment of the utilization path of the tunnel slag of the mileage section, and proceeding to step S5; otherwise, proceeding to step S4;

[0117] Among them, the advanced geological prediction data are obtained at the tunnel construction site, including the static elastic modulus E1 of the rock in the tunnel slag, the dynamic elastic modulus E2 of the rock, and the longitudinal wave V Pand rock shear wave V S ;

[0118] Among them, the first preset condition is whether there is a change in the utilization route or whether the remaining tunnel slag mileage that has not been subjected to the third judgment is greater than 300m.

[0119] In this embodiment, the prediction index of the saturated uniaxial compressive strength of tunnel slag includes the compressive strength of sandstone under static elastic modulus, the compressive strength of sandstone under dynamic elastic modulus, the compressive strength of slate under static elastic modulus, the compressive strength of slate under dynamic elastic modulus, the compressive strength of granite under static elastic modulus and the compressive strength of granite under dynamic elastic modulus;

[0120] The fitting expression of the compressive strength of sandstone under static elastic modulus is as follows:

[0121]

[0122] Among them, R C11 It indicates the compressive strength of sandstone under static elastic modulus;

[0123] The fitting expression of the compressive strength of the sandstone under the dynamic elastic modulus is as follows:

[0124]

[0125] Among them, R C12 It represents the compressive strength of sandstone under dynamic elastic modulus;

[0126] The fitting expression of the compressive strength of slate under static elastic modulus is as follows:

[0127]

[0128] Among them, R C21 It indicates the compressive strength of slate under static elastic modulus;

[0129] The fitting expression of the compressive strength of slate under dynamic elastic modulus is as follows:

[0130]

[0131] Among them, R C22 It indicates the compressive strength of slate under dynamic elastic modulus;

[0132] The fitting expression of the compressive strength of granite under static elastic modulus is as follows:

[0133]

[0134] Among them, R C31 It indicates the compressive strength of granite under static elastic modulus;

[0135] The fitting expression of the compressive strength of granite under dynamic elastic modulus is as follows:

[0136]

[0137] Among them, R C32 It indicates the compressive strength of granite under dynamic elastic modulus;

[0138] Among them, E1 is the static elastic modulus of rock, and E2 is the dynamic elastic modulus of rock;

[0139] The dry density prediction index of the tunnel slag block includes a sandstone block dry density prediction index, a granite block dry density prediction index and a slate block dry density prediction index;

[0140] The expression of the sandstone block dry density prediction index is as follows:

[0141]

[0142] Among them, ρ1 represents the prediction index of sandstone block dry density;

[0143] The expression of the granite block dry density prediction index is as follows:

[0144]

[0145] Among them, ρ2 represents the prediction index of granite block dry density;

[0146] The expression of the slate block dry density prediction index is as follows:

[0147]

[0148] Among them, ρ3 represents the prediction index of slate block dry density;

[0149] Among them, E1 is the static elastic modulus of rock, and E2 is the dynamic elastic modulus of rock.

[0150] In this embodiment, the specific process of the second judgment is as follows:

[0151] When the second judgment parameter meets the second judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate;

[0152] When the second judgment parameter meets the second judgment standard value of the ballast utilization method, the tunnel slag of this section of mileage is used to produce ballast;

[0153] When the second judgment parameter meets the second judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce fillers;

[0154] When the second judgment parameter meets the second judgment standard value of the stone powder utilization method, the tunnel slag of this section of mileage is used to produce stone powder;

[0155] For example, the second judgment standard value of aggregate utilization is specifically:

[0156] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 45MPa, and the block dry density of tunnel slag is greater than or equal to 2600kg / m 3 , The block dry density of tunnel slag under TBM excavation parameters is greater than or equal to 2500kg / m 3 2. The softening coefficient of tunnel slag is greater than or equal to 0.8 and the lithology of tunnel slag does not belong to high-risk or sub-high-risk rock;

[0157] For example, the second judgment standard value of ballast utilization method is specifically:

[0158] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 60MPa, and the dry density of the block of tunnel slag in advance drilling by drilling and blasting method is greater than or equal to 2600kg / m 3 2. The softening coefficient of tunnel slag is greater than or equal to 0.8 and the lithology of tunnel slag does not belong to high-risk or sub-high-risk rock;

[0159] For example, the second judgment standard value of the filler utilization method is specifically:

[0160] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 10MPa, and the block dry density of tunnel slag is greater than or equal to 2400kg / m 3 2. The dry density of the tunnel slag under TBM excavation parameters is greater than or equal to 2400kg / m 3 2. The softening coefficient of tunnel slag is greater than or equal to 0.8 and the lithology of tunnel slag does not belong to high-risk rock;

[0161] For example, the second judgment standard value of the stone powder utilization path is specifically:

[0162] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 45MPa, and the block dry density of tunnel slag is greater than or equal to 2600kg / m 3 , The block dry density of tunnel slag under TBM excavation parameters is greater than or equal to 2500kg / m 3 , the softening coefficient of tunnel slag is greater than or equal to 0.8 and the lithology of tunnel slag does not belong to high-risk or second-high-risk rock.

[0163] S4, according to the judgment result of S3, only the harmful substance index detection is performed on the section of mileage, and it is determined whether the harmful substance index detection result meets the second preset condition. If so, the third judgment result of the previous section of mileage is used to complete the judgment of the utilization method of the tunnel slag of the section of mileage, and enter step S5; otherwise, the physical and mechanical index detection is performed on the section of mileage, and the utilization method of the tunnel slag of the section of mileage is completed. Step S5 is entered, and its implementation method is as follows:

[0164] S401, using the tunnel slag of the section that does not meet the first preset condition in S3 to obtain a harmful substance index, and only performing the harmful substance index detection in the third judgment on the section to determine whether the harmful substance index detection result meets the second preset condition, if so, using the third judgment result of the previous section to complete the determination of the utilization path of the tunnel slag of the section, and enter step S5, otherwise, enter S402;

[0165] S402, using the tunnel slag of the mileage section to obtain physical and mechanical indicators, and performing the physical and mechanical indicator detection in the third judgment on the mileage section, completing the judgment of the utilization method of the tunnel slag of the mileage section, and entering step S5;

[0166] Among them, the second preset condition is to compare the harmful substance index of the tunnel slag of this section of mileage with the third judgment standard value, and judge whether the comparison result is consistent with the comparison result of the harmful substance index of the previous section of mileage with the third judgment standard value.

[0167] In this embodiment, the specific process of the third judgment is as follows:

[0168] When the third judgment parameter meets the third judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate;

[0169] When the third judgment parameter meets the third judgment standard value of the ballast utilization method, the tunnel slag of this section of mileage is used to produce ballast;

[0170] When the third judgment parameter meets the third judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce filler;

[0171] When the third judgment parameter meets the third judgment standard value of the stone powder utilization method, the tunnel slag of this section of mileage is used to produce stone powder;

[0172] For example, the third judgment standard value of aggregate utilization is:

[0173] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 45MPa, the water absorption rate of tunnel slag is less than or equal to 1%, and the dry density of tunnel slag block is greater than or equal to 2600kg / m 3 , the SO3 content of tunnel slag is less than or equal to 0.5%, the mica content of tunnel slag is less than or equal to 0.5% and the softening coefficient of tunnel slag is greater than or equal to 0.8;

[0174] For example, the third judgment standard value of ballast utilization path is:

[0175] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 60MPa, the water absorption rate of tunnel slag is less than or equal to 1%, and the dry density of tunnel slag block is greater than or equal to 2600kg / m 3, the SO3 content of tunnel slag is less than or equal to 0.5%, the mica content of tunnel slag is less than or equal to 0.5% and the softening coefficient of tunnel slag is greater than or equal to 0.8;

[0176] For example, the third judgment standard value of filler utilization is specifically:

[0177] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 10MPa, the water absorption rate of tunnel slag is less than or equal to 2.5%, and the dry density of tunnel slag block is greater than or equal to 2400kg / m 3 , when the SO3 content of tunnel slag is less than or equal to 3%, the mica content of tunnel slag is less than or equal to 2% and the softening coefficient of tunnel slag is greater than or equal to 0.8;

[0178] For example, the third judgment standard value of the stone powder utilization path is specifically:

[0179] The saturated uniaxial compressive strength of tunnel slag is greater than or equal to 45MPa, the water absorption rate of tunnel slag is less than or equal to 1%, and the dry density of tunnel slag block is greater than or equal to 2600kg / m 3 , the SO3 content of tunnel slag is less than or equal to 0.5%, the mica content of tunnel slag is less than or equal to 0.5% and the softening coefficient of tunnel slag is greater than or equal to 0.8;

[0180] The working principle and process of the present invention are as follows: before tunnel construction, geological survey data of the tunnel section to be constructed are collected, a first judgment parameter is obtained according to the geological survey data, the first judgment parameter is compared with the first judgment standard value, a first judgment of the utilization path of the tunnel slag is completed, and it is judged whether the first judgment result meets any utilization path parameter requirement. If so, the whole section of the tunnel slag can be evaluated for high-quality utilization path, otherwise, the whole section of the tunnel slag is used as abandoned slag; the detection data is measured by the detection equipment to obtain the third judgment parameter, and the utilization path of the first section of the tunnel slag that meets the requirements of the first judgment standard value is judged to obtain the third judgment result of the first section; the saturated uniaxial compressive strength prediction index of the tunnel slag of the next section of mileage and the dry density prediction index of the tunnel slag block are calculated by advanced geological prediction data, the lithology of the tunnel slag of this section of mileage is obtained by identifying the tunnel slag photos, and the surrounding rock grade of the tunnel slag of this section of mileage is determined by using the parameters in the geological survey data to obtain the second judgment parameter, and the utilization path of the tunnel slag of this section of mileage is judged to be the same as the third judgment of the utilization path of the previous section of mileage Whether there is a change or not, determine whether the tunnel slag of the mileage where the third judgment is not conducted is greater than 300m. If so, conduct the third judgment on the mileage to determine the utilization method of the tunnel slag and complete the assessment of the utilization method of this mileage; otherwise, only conduct harmful substance index detection and determine whether the harmful substance index detection result is consistent with the harmful substance index detection result of the previous mileage. If so, use the third judgment result of the previous mileage to complete the judgment of the utilization method of the tunnel slag of this mileage; otherwise, conduct physical and mechanical index detection on this mileage to complete the judgment of the utilization method of the tunnel slag of this mileage The present invention conducts three-level assessment on four utilization methods of tunnel slag, namely aggregate, ballast, filler and stone powder, wherein the first judgment is the initial judgment, the second judgment is the intermediate judgment, and the third judgment is the final judgment. The initial judgment can realize the preliminary assessment of the utilization methods of tunnel slag of all mileages, and the final judgment is the most accurate in judging the utilization methods of tunnel slag. By comparing the intermediate judgment result of each mileage with the final judgment result of the previous mileage, the efficient, rapid and accurate assessment of the utilization methods of tunnel slag can be realized, so as to timely guide the on-site tunnel slag transportation and realize the high-quality utilization methods of tunnel slag.

Claims

1. A method for evaluating high-quality utilization of tunnel slag, characterized in that: The following steps are involved: S1, using the first judgment standard value to make a first judgment on the tunnel slag, and judging whether the first judgment result meets any utilization path requirement, if so, proceeding to step S2, otherwise, treating the tunnel slag that does not meet any utilization path requirement as abandoned slag, and ending the process; S2, using the third judgment standard value to perform a third judgment on the first mileage of the tunnel slag that meets the judgment condition of S1, to obtain a third judgment result of the first mileage of the tunnel slag, and then proceed to step S3; S3, using the second judgment standard value to make a second judgment on the tunnel slag of the next section of mileage, and compare the second judgment result of the section of mileage with the third judgment result of the previous section of mileage, to determine whether the comparison result meets the first preset condition, if so, then make a third judgment on the section of mileage, complete the judgment of the utilization path of the tunnel slag of the section of mileage, and enter step S5, otherwise, enter step S4; S4, according to the judgment result of S3, only the harmful substance index detection is performed on the section of mileage, and it is determined whether the harmful substance index detection result meets the second preset condition. If so, the third judgment result of the previous section of mileage is used to complete the determination of the utilization method of the tunnel slag of the section of mileage, and the process goes to step S5. Otherwise, the physical and mechanical index detection is performed on the section of mileage, and the determination of the utilization method of the tunnel slag of the section of mileage is completed, and the process goes to step S5. S5. Determine whether the mileage of the tunnel slag that has not been detected is 0m. If so, complete the judgment of the utilization path of the tunnel slag of all mileages and end the process, otherwise return to step S3.

2. The method for evaluating the high-quality utilization of tunnel slag according to claim 1 is characterized in that: The S1 comprises the following steps: S101, collecting tunnel slag geological survey data before tunnel construction, and using the geological survey data as the first judgment parameter; S102. Compare the first judgment parameter with the first judgment standard value to make a first judgment on the four utilization methods of tunnel slag aggregate, ballast, filler and stone powder, and judge whether the first judgment result meets the parameter requirement of any utilization method. If so, go to step S2; otherwise, regard the tunnel slag as waste and end the process.

3. The method for evaluating the high-quality utilization of tunnel slag according to claim 2, characterized in that: The specific process of the first judgment is as follows: When the first judgment parameter meets the first judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate; When the first judgment parameter meets the first judgment standard value of the ballast utilization method, the tunnel slag of the mileage section is used to produce ballast; When the first judgment parameter meets the first judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce fillers; When the first judgment parameter meets the first judgment standard value of the stone powder utilization method, the tunnel slag of this mileage section is used to produce stone powder.

4. The method for evaluating the high-quality utilization of tunnel slag according to claim 1, characterized in that: The S2 comprises the following steps: S201, using detection equipment to obtain detection data of tunnel slag at the construction site, and using the obtained detection data as the third judgment parameter, wherein the detection data includes physical and mechanical indicators and harmful substance indicators, the physical and mechanical indicators include saturated uniaxial compressive strength, block dry density, water absorption rate and softening coefficient, and the harmful substance indicators include mica content and sulfate content; S202, comparing the third judgment parameter of the first section of tunnel slag with the third judgment standard value to make a third judgment on the four utilization methods of the first section of tunnel slag: aggregate, ballast, filler and stone powder, and obtain the third judgment result, and enter step S3.

5. The method for evaluating high-quality utilization of tunnel slag according to claim 1, characterized in that: The S3 comprises the following steps: S301, using the tunnel slag of the next mileage to obtain advanced geological prediction data at the construction site, and calculate the prediction index of the saturated uniaxial compressive strength of the tunnel slag and the prediction index of the dry density of the tunnel slag block; S302, obtaining the lithology of the tunnel slag using the tunnel slag photograph, and determining the surrounding rock grade by continuing to use the first judgment standard value; S303, using the prediction index of saturated uniaxial compressive strength of tunnel slag, the prediction index of dry density of tunnel slag block, lithology of tunnel slag and grade of surrounding rock as the second judgment parameter; S304, comparing the second judgment parameter with the second judgment standard value to make a second judgment on the four utilization methods of tunnel slag aggregate, ballast, filler and stone powder for this section of mileage, and obtaining a second judgment result; S305. Compare the second judgment result with the third judgment result of the previous mileage to determine whether the comparison result meets the first preset condition. If so, use the tunnel slag of this mileage to obtain the third judgment parameter of this mileage, and make a third judgment on this mileage to complete the judgment of the utilization method of the tunnel slag of this mileage, and enter step S5. Otherwise, enter step S4.

6. The method for evaluating the high-quality utilization of tunnel slag according to claim 5, characterized in that: The prediction index of the saturated uniaxial compressive strength of tunnel slag includes the compressive strength of sandstone under static elastic modulus, the compressive strength of sandstone under dynamic elastic modulus, the compressive strength of slate under static elastic modulus, the compressive strength of slate under dynamic elastic modulus, the compressive strength of granite under static elastic modulus and the compressive strength of granite under dynamic elastic modulus; The fitting expression of the compressive strength of sandstone under static elastic modulus is as follows: Among them, R C11 It indicates the compressive strength of sandstone under static elastic modulus; The fitting expression of the compressive strength of the sandstone under the dynamic elastic modulus is as follows: Among them, R C12 It represents the compressive strength of sandstone under dynamic elastic modulus; The fitting expression of the compressive strength of slate under static elastic modulus is as follows: Among them, R C21 It indicates the compressive strength of slate under static elastic modulus; The fitting expression of the compressive strength of slate under dynamic elastic modulus is as follows: Among them, R C22 It indicates the compressive strength of slate under dynamic elastic modulus; The fitting expression of the compressive strength of granite under static elastic modulus is as follows: Among them, R C31 It indicates the compressive strength of granite under static elastic modulus; The fitting expression of the compressive strength of granite under dynamic elastic modulus is as follows: Among them, R C32 It indicates the compressive strength of granite under dynamic elastic modulus; Among them, E1 is the static elastic modulus of rock, and E2 is the dynamic elastic modulus of rock. The dry density prediction index of the tunnel slag block includes a sandstone block dry density prediction index, a granite block dry density prediction index and a slate block dry density prediction index; The expression of the sandstone block dry density prediction index is as follows: Among them, ρ1 represents the prediction index of sandstone block dry density; The expression of the granite block dry density prediction index is as follows: Among them, ρ2 represents the prediction index of granite block dry density; The expression of the slate block dry density prediction index is as follows: Among them, ρ3 represents the prediction index of slate block dry density; Among them, V P is the rock longitudinal wave, V S It is rock transverse wave.

7. The method for evaluating high-quality utilization of tunnel slag according to claim 1, characterized in that: The specific process of the second judgment is as follows: When the second judgment parameter meets the second judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate; When the second judgment parameter meets the second judgment standard value of the ballast utilization method, the tunnel slag of this section of mileage is used to produce ballast; When the second judgment parameter meets the second judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce fillers; When the second judgment parameter meets the second judgment standard value of the stone powder utilization method, the tunnel slag of this mileage section is used to produce stone powder.

8. The method for evaluating high-quality utilization of tunnel slag according to claim 1, characterized in that: The S4 comprises the following steps: S401, using the tunnel slag of the section that does not meet the first preset condition in S3 to obtain a harmful substance index, and only performing the harmful substance index detection in the third judgment on the section to determine whether the harmful substance index detection result meets the second preset condition, if so, using the third judgment result of the previous section to complete the determination of the utilization path of the tunnel slag of the section, and enter step S5, otherwise, enter S402; S402, using the tunnel slag of this section to obtain physical and mechanical indicators, and performing the physical and mechanical indicator detection in the third judgment on this section of mileage, completing the judgment of the utilization method of the tunnel slag of this section of mileage, and entering step S5.

9. The method for evaluating high-quality utilization of tunnel slag according to any one of claims 1 to 8, characterized in that: The specific process of the third judgment is as follows: When the third judgment parameter meets the third judgment standard value of the aggregate utilization method, the tunnel slag of this section of mileage is used to produce aggregate; When the third judgment parameter meets the third judgment standard value of the ballast utilization method, the tunnel slag of this section of mileage is used to produce ballast; When the third judgment parameter meets the third judgment standard value of the filler utilization method, the tunnel slag of this section of mileage is used to produce filler; When the third judgment parameter meets the third judgment standard value of the stone powder utilization method, the tunnel slag of this section of mileage is used to produce stone powder.

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