A method for detecting construction quality of slope support
Through slope survey and multiple judgment methods, the problems of insufficient accuracy and flexibility in slope support construction quality inspection were solved, high-precision construction quality control was achieved, and the safety and stability of slope support were ensured.
Patent Information
- Application Number
- CN202510816868.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2045-06-18
AI Technical Summary
The existing technology lacks accuracy and flexibility in slope support construction quality inspection, lacks real-time monitoring capabilities, and cannot dynamically control construction.
By surveying the slope to obtain size and soil information, determining anchor setting parameters, conducting performance tests and ultrasonic detection, and combining stability characteristic values, defect index and settlement deformation values for multiple determinations, the anchor position and grouting pressure are adjusted according to the reasons for failure to meet the requirements, thus achieving multiple qualification determinations.
It improves the accuracy and flexibility of construction quality inspection, ensures the safety and stability of slope support, and improves the level of construction quality control through multiple judgments.
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Figure CN120401576B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of construction quality detection, and in particular to a construction quality detection method for slope support. Background Art
[0002] With the acceleration of urbanization and the rapid development of infrastructure, slope engineering is widely used in highways, railways, water conservancy projects, mining, and construction foundation pits. Slope stability directly impacts project safety and the surrounding environment. Once unstable, it can trigger geological disasters such as landslides and collapses, resulting in casualties and property damage.
[0003] Chinese patent application publication number: CN111597625A, discloses a BIM-based foundation pit support excavation quality control method, the method comprising: 1) establishing a foundation pit slope support BIM model containing various relevant contents in a software system; 2) performing corresponding same-class verification on the foundation pit slope support containing various relevant contents in the foundation pit slope support BIM model containing various relevant contents; 3) integrating the verified foundation pit slope support BIM model; 4) performing collision detection on the integrated foundation pit slope support BIM model to detect whether there are collision points; 5) repeating step 4) until there are no collision points in the integrated foundation pit slope support BIM model.
[0004] However, the existing technology has the following problems: the existing technology has insufficient real-time monitoring capabilities and cannot dynamically adjust the construction plan, resulting in insufficient accuracy and flexibility in construction quality inspection. Summary of the Invention
[0005] To this end, the present invention provides a construction quality detection method for slope support, which is used to overcome the problems of insufficient accuracy and flexibility in construction quality detection in the prior art.
[0006] To achieve the above object, the present invention provides a method for detecting the construction quality of slope support, comprising:
[0007] Surveying the slope to obtain slope dimension information and soil quality information, and determining anchor rod setting parameters based on the dimension information and soil quality information, wherein the setting parameters include anchor rod setting angle, spacing, and depth;
[0008] Conduct performance tests on the completed anchor bolts and obtain stability characteristic values;
[0009] The eligibility of the construction of a single anchor bolt is determined based on the stability characteristic value of the single anchor bolt;
[0010] If a single anchor bolt fails to meet the requirements, ultrasonic detection can be performed on the slope interior to obtain a defect index and the anchor bolt construction qualification can be re-evaluated based on the defect index, or the grouting pressure can be increased during the anchor bolt construction process;
[0011] Under the condition that the anchor bolt construction is judged unqualified for the second time, the qualification of the anchor bolt construction in the area is judged according to the qualified rate of the anchor bolts in the preset area;
[0012] Under the condition that the regional anchor construction fails to meet the standards, the cause of the unqualified slope support construction shall be determined based on the unqualified anchor position and the anchor elevation angle shall be increased or the anchor spacing shall be reduced;
[0013] Under the condition that the anchor bolt construction in each area is qualified, the construction of trenching, tying steel bars and pouring concrete is completed to complete the construction of slope support;
[0014] After the preset construction period, the average settlement and deformation value of the slope support is tested;
[0015] The eligibility of slope support construction is determined based on the average settlement deformation value. Under unqualified conditions, the anchor displacement value of the block with a settlement deformation value greater than the preset settlement deformation value is detected. The cause of the unqualified condition is analyzed based on the displacement value and the adjustment strategy is determined.
[0016] Furthermore, the conformity of the construction of a single anchor rod is determined based on the stability characteristic value of the single anchor rod, wherein, if the stability characteristic value is less than a first preset stability threshold, the construction of the single anchor rod is determined to be qualified, and the performance test of the remaining anchor rods is completed; if the stability characteristic value is greater than or equal to the first preset stability threshold and less than the second preset stability threshold, the construction of the single anchor rod is determined to be unqualified, and the conformity of the anchor rod construction is determined again based on the defect index; if the stability characteristic value is greater than or equal to the second preset stability threshold, the construction of the single anchor rod is determined to be unqualified, and the grouting pressure during the anchor rod construction process is increased based on the difference between the stability characteristic value and the second preset stability threshold.
[0017] Furthermore, the stability characteristic value is determined by the angle deviation value and the tension value of the anchor rod.
[0018] Furthermore, the conformity of the anchor rod construction is judged secondary based on the defect index, wherein, if the defect index is less than the preset defect index, the anchor rod construction is judged secondary as qualified, and the performance test of the remaining anchor rods is completed; if the defect index is greater than or equal to the preset defect index, the anchor rod construction is judged secondary as unqualified, and the conformity of the anchor rod construction is judged based on the qualified rate of the anchor rods in the preset area.
[0019] Furthermore, the qualification of the anchor rod construction is determined based on the qualified rate of the anchor rods in the preset area, wherein, if the qualified rate is less than the preset qualified rate, the anchor rod construction is determined to be unqualified, and the adjustment strategy is determined based on the position of the unqualified anchor rod; if the qualified rate is greater than or equal to the preset qualified rate, the anchor rod construction is determined to be qualified, and the slope support construction is completed.
[0020] Furthermore, an adjustment strategy is determined based on the position of the non-compliant anchor rod. If the anchor rod is located in the upper section of the slope, the adjustment strategy is to add an anchor rod; if the anchor rod is located in the middle section of the slope, the adjustment strategy is to reconstruct; if the anchor rod is located in the bottom section of the slope, the adjustment strategy is to increase the depth of the anchor rod.
[0021] Furthermore, several adjustment methods are provided for the grouting pressure, and each adjustment method has a different adjustment range for the grouting pressure.
[0022] Furthermore, the average settlement deformation value detection process includes:
[0023] Set up several monitoring points on the slope;
[0024] Use a level and a total station to monitor several monitoring points for a preset time period;
[0025] After the monitoring is completed, the settlement and deformation values are determined based on the settlement and displacement values of a single monitoring point;
[0026] The average settlement deformation value of several monitoring points is recorded as the average settlement deformation value.
[0027] Furthermore, the suitability of the slope support construction is determined based on the average settlement deformation value, wherein, if the average settlement deformation value is less than the preset settlement deformation value, the slope support construction is determined to be qualified; if the average settlement deformation value is greater than or equal to the preset settlement deformation value, the slope support construction is determined to be unqualified, and the reasons for the unqualified slope support construction are analyzed based on the anchor displacement value of a single monitoring point whose settlement deformation value is greater than the preset settlement deformation value.
[0028] Furthermore, the reason for the unqualified slope support construction is determined based on the anchor rod displacement value, wherein, if the anchor rod displacement value is less than the preset displacement value, it is determined that the reason for the unqualified slope support construction is that the angle of the anchor rod does not meet the standard, and the elevation angle of the anchor rod in the vertical plane of the slope normal is increased according to the difference between the preset displacement value and the anchor rod displacement value; if the anchor rod displacement value is greater than or equal to the preset displacement value, it is determined that the reason for the unqualified slope support construction is that the spacing of the anchor rods does not meet the standard, and the spacing of the anchor rods is reduced according to the difference between the anchor rod displacement value and the preset displacement value.
[0029] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention determines the eligibility of the construction of a single anchor rod according to the stability characteristic value of the single anchor rod, performs ultrasonic detection on the inside of the slope to obtain the defect index and determines the eligibility of the anchor rod construction for a second time based on the defect index when the second judgment is unqualified, determines the eligibility of the regional anchor rod construction based on the qualified rate of the anchor rods in the preset area, and determines the eligibility of the slope support construction based on the average settlement deformation value after the construction is completed. Through multiple eligibility judgments, the accuracy of construction quality inspection is improved.
[0030] Furthermore, the present invention introduces a stability characteristic value, which is determined by the angle deviation value and the tension value of the anchor rod, so that the determination result is more accurate.
[0031] Furthermore, when the anchor rod construction is unqualified, the present invention determines an adjustment strategy based on the position of the unqualified anchor rod, including adding anchor rods in the upper section of the slope, re-constructing in the middle section of the slope, and increasing the depth of the anchor rods in the bottom section of the slope. By setting different adjustment strategies for different positions, the flexibility of construction quality inspection and the safety and stability of slope support are improved.
[0032] Furthermore, when the slope support construction is unqualified, the present invention analyzes the reasons for the unqualified slope support construction based on the anchor displacement value of a single monitoring point whose settlement deformation value is greater than the preset settlement deformation value, including the substandard anchor angle and substandard anchor spacing, and at the same time determines an adjustment strategy, thereby improving the quality control level of the slope support construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 This is a flow chart of a method for detecting the construction quality of slope support according to an embodiment of the present invention;
[0034] Figure 2 A flow chart for determining the eligibility of construction of a single anchor rod according to an embodiment of the present invention;
[0035] Figure 3 A flow chart for determining the eligibility of anchor bolt construction according to an embodiment of the present invention;
[0036] Figure 4 This is a flow chart for determining the eligibility of slope support construction according to an embodiment of the present invention. DETAILED DESCRIPTION
[0037] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.
[0038] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0039] It should be pointed out that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical test data and the corresponding historical test results of the three months before this test. It can be understood by those skilled in the art that the present invention can determine the above parameters for a single item by selecting the value with the highest proportion as the preset standard parameter based on the data distribution, using weighted summation to use the obtained value as the preset standard parameter, substituting each historical data into a specific formula and using the value obtained by the formula as the preset standard parameter or other selection methods, as long as the present invention can clearly define the different specific situations in the single determination process through the obtained values.
[0040] See also Figures 1 to 4 As shown, they are respectively a flow chart of a method for detecting the construction quality of slope support according to an embodiment of the present invention; a flow chart of determining the eligibility of the construction of a single anchor rod according to an embodiment of the present invention; a flow chart of determining the eligibility of anchor rod construction according to an embodiment of the present invention; and a flow chart of determining the eligibility of slope support construction according to an embodiment of the present invention.
[0041] The method for detecting the construction quality of slope support according to an embodiment of the present invention includes:
[0042] Step S1, surveying the slope to obtain slope size information and soil quality information, and determining anchor rod setting parameters based on the size information and soil quality information, wherein the setting parameters include anchor rod setting angle, spacing and depth;
[0043] Step S2, performing a performance test on the anchor bolt after construction and obtaining a stability characteristic value, wherein the performance test includes an angle test and a tension test;
[0044] Step S3, determining the eligibility of the construction of the single anchor rod according to the stability characteristic value of the single anchor rod;
[0045] Step S4: Under the condition that the construction of a single anchor bolt is unqualified, ultrasonic detection is performed on the interior of the slope to obtain a defect index and the eligibility of the anchor bolt construction is re-determined based on the defect index, or the grouting pressure during the anchor bolt construction process is increased;
[0046] Step S5, determining the eligibility of the anchor bolt construction in the area according to the qualified rate of the anchor bolts in the preset area under the condition that the anchor bolt construction is determined to be unqualified for the second time;
[0047] Step S6, if the anchor bolt construction in the area is unqualified, determining the reason for the unqualified slope support construction based on the unqualified anchor bolt positions and increasing the elevation angle of the anchor bolts or reducing the spacing between the anchor bolts;
[0048] Step S7: Under the condition that the anchor bolt construction in each area is qualified, the construction of trenching, tying steel bars and pouring concrete is completed to complete the construction of the slope support;
[0049] Step S8, detecting the average settlement deformation value of the slope support after the construction is completed for a preset period of time;
[0050] Step S9, determine the eligibility of the slope support construction based on the average settlement deformation value, detect the anchor displacement value of the block where the settlement deformation value is greater than the preset settlement deformation value under the unqualified condition, analyze the cause of the unqualified construction based on the displacement value and determine the adjustment strategy.
[0051] Specifically, slope dimension information includes the length, width, height and inclination angle of the slope; soil quality information includes soil moisture content, density and cohesion.
[0052] In the embodiment of the present invention, the initial setting angle of the anchor rod is 20°, the anchor rods are distributed in a grid shape, the horizontal and vertical spacing are 2m respectively, and the depth is 6m, but the above values are not limited to this. Those skilled in the art can adjust the value according to actual needs.
[0053] Specifically, the conformity of the construction of a single anchor rod is determined based on the stability characteristic value of the single anchor rod, wherein, if the stability characteristic value is less than the first preset stability threshold value of 0.75, the construction of the single anchor rod is determined to be qualified, and the performance test of the remaining anchor rods is completed; if the stability characteristic value is greater than or equal to the first preset stability threshold value and less than the second preset stability threshold value of 0.82, the construction of the single anchor rod is determined to be unqualified, and the conformity of the anchor rod construction is determined again based on the defect index; if the stability characteristic value is greater than or equal to the second preset stability threshold value, the construction of the single anchor rod is determined to be unqualified, and the grouting pressure during the anchor rod construction process is increased according to the difference between the stability characteristic value and the second preset stability threshold value.
[0054] In the embodiment of the present invention, the first preset stability threshold is 0.75, and the second preset stability threshold is 0.82, but the above values are not limited thereto, and those skilled in the art may adjust the values according to actual needs.
[0055] Specifically, the stability characteristic value is determined by the angle deviation value and the tension value of the anchor rod and is calculated by the following formula: ,in, is the stability eigenvalue, is the first weight coefficient, set =0.52, is the angle deviation value, is the angle deviation threshold, set =2°, is the second weight coefficient, set =0.46, is the tensile force value, is the tension threshold, set =100kN.
[0056] Specifically, the angle deviation value is obtained through an angle test, specifically measured by a total station measurement method, and the tension value is obtained through a tension test, specifically measured by a pull-out test method.
[0057] Specifically, the conformity of the anchor rod construction is judged twice based on the defect index, wherein, if the defect index is less than 8% of the preset defect index, the anchor rod construction is judged to be qualified for the second time, and the performance test of the remaining anchor rods is completed; if the defect index is greater than or equal to the preset defect index, the anchor rod construction is judged to be unqualified for the second time, and the conformity of the anchor rod construction is judged based on the qualified rate of the anchor rods in the preset area.
[0058] Specifically, the defect index is the ratio of the number of measuring points with amplitudes lower than a preset amplitude to the total number of measuring points, which is measured by an ultrasonic detector using an ultrasonic probe to excite and receive signals at the exposed end of the anchor rod and scan along the length of the anchor rod.
[0059] Specifically, the preset defect index value is 8%, and the preset amplitude value is 50 mV, but the above values are not limited thereto, and those skilled in the art may adjust the values according to actual needs.
[0060] Specifically, the qualification of the anchor rod construction is determined based on the qualified rate of the anchor rods in the preset area. If the qualified rate is less than the preset qualified rate of 90%, the anchor rod construction is determined to be unqualified, and the adjustment strategy is determined based on the position of the unqualified anchor rods; if the qualified rate is greater than or equal to the preset qualified rate, the anchor rod construction is determined to be qualified, and the slope support construction is completed.
[0061] In an embodiment of the present invention, the slope is vertically divided into several areas on average longitudinally, for example, into 4 areas, each area is a preset area, and the preset qualified rate is 90%, but the above value is not limited to this. Those skilled in the art can adjust the value according to actual needs.
[0062] Specifically, the adjustment strategy is determined based on the position of the anchor rod that does not meet the requirements. If the anchor rod is located in the upper part of the slope, the adjustment strategy is to add anchor rods; if the anchor rod is located in the middle part of the slope, the adjustment strategy is to reconstruct; if the anchor rod is located in the bottom part of the slope, the adjustment strategy is to increase the depth of the anchor rod.
[0063] In an embodiment of the present invention, when the non-compliant anchor rod is in the upper section of the slope, an additional anchor rod is respectively installed above and below the position 0.5 m away from the non-compliant anchor rod; when the non-compliant anchor rod is in the lower section of the slope, the depth of the anchor rod is increased by 10%.
[0064] Specifically, several adjustment methods are provided for the grouting pressure, and each adjustment method has a different adjustment range for the grouting pressure. If the stability difference is less than a first preset stability difference of 0.03, the grouting pressure is increased to the corresponding value using a first pressure adjustment coefficient of 1.3;
[0065] If the stability difference is greater than or equal to the first preset stability difference and less than the second preset stability difference of 0.08, the grouting pressure is increased to a corresponding value using a second pressure adjustment coefficient of 1.6;
[0066] If the stability difference is greater than or equal to the second preset stability difference, the grouting pressure is increased to a corresponding value using a third pressure adjustment coefficient of 1.9;
[0067] The stability difference is the difference between the stability characteristic value and the second preset stability threshold.
[0068] In the embodiment of the present invention, the initial grouting pressure is set to 0.5 MPa, the first preset stability difference value is 0.03, and the second preset stability difference value is 0.08.
[0069] Specifically, the average settlement deformation value detection process includes:
[0070] Set up several monitoring points on the slope;
[0071] Use a level and a total station to monitor several monitoring points for a preset time period;
[0072] After the monitoring is completed, the settlement and deformation values are determined based on the settlement and displacement values of a single monitoring point;
[0073] The average settlement deformation value of several monitoring points is recorded as the average settlement deformation value.
[0074] In an embodiment of the present invention, the number of monitoring points is set to 36, and 3 monitoring points are set in the upper, middle and lower sections of the slope in each area, wherein each monitoring point is located at the end point of the anchor rod; the preset time length is 7 days; the settlement deformation value of a single monitoring point is the sum of the settlement value and the displacement value.
[0075] Specifically, the eligibility of the slope support construction is determined based on the average settlement deformation value, where if the average settlement deformation value is less than the preset settlement deformation value of 50 mm, the slope support construction is determined to be qualified; if the average settlement deformation value is greater than or equal to the preset settlement deformation value, the slope support construction is determined to be unqualified, and the reasons for the unqualified slope support construction are analyzed based on the anchor displacement value of a single monitoring point whose settlement deformation value is greater than the preset settlement deformation value.
[0076] In the embodiment of the present invention, the preset settlement deformation value is 50 mm, but the above value is not limited thereto, and those skilled in the art can adjust the value according to actual needs.
[0077] Specifically, the reason for the unqualified slope support construction is determined based on the anchor rod displacement value, wherein, if the anchor rod displacement value is less than the preset displacement value, it is determined that the reason for the unqualified slope support construction is that the angle of the anchor rod does not meet the standard, and the elevation angle of the anchor rod in the vertical plane of the slope normal is increased according to the difference between the preset displacement value and the anchor rod displacement value; if the anchor rod displacement value is greater than or equal to the preset displacement value, it is determined that the reason for the unqualified slope support construction is that the spacing of the anchor rods does not meet the standard, and the spacing of the anchor rods is reduced according to the difference between the anchor rod displacement value and the preset displacement value.
[0078] Specifically, the elevation angle of the anchor rod in the vertical plane normal to the slope is increased according to the difference between the preset displacement value and the anchor rod displacement value, wherein, if the first displacement difference is less than the first preset displacement difference of 5 mm, the elevation angle of the anchor rod is increased to the corresponding value using a first angle adjustment coefficient of 1.1;
[0079] If the first displacement difference is greater than or equal to the first preset displacement difference and less than the second preset displacement difference of 10 mm, the elevation angle of the anchor rod is increased to a corresponding value using a second angle adjustment coefficient of 1.3;
[0080] If the first displacement difference is greater than or equal to the second preset displacement difference, the elevation angle of the anchor rod is increased to a corresponding value using a third angle adjustment coefficient of 1.5;
[0081] The first displacement difference is the difference between the preset displacement value and the anchor rod displacement value.
[0082] In the embodiment of the present invention, the first preset displacement difference is 5 mm, and the second preset displacement difference is 10 mm, but the above values are not limited thereto, and those skilled in the art may adjust the values according to actual needs.
[0083] Specifically, the spacing between the anchor rods is reduced according to the difference between the anchor rod displacement value and the preset displacement value, wherein, if the second displacement difference is less than the third preset displacement difference of 8 mm, the first spacing adjustment coefficient of 0.9 is used to reduce the spacing between the anchor rods to the corresponding value;
[0084] If the second displacement difference is greater than or equal to the third preset displacement difference and less than the fourth preset displacement difference of 15 mm, the second spacing adjustment coefficient of 0.82 is used to reduce the spacing of the anchor rods to the corresponding value;
[0085] If the second displacement difference is greater than or equal to the fourth preset displacement difference, the anchor bolt spacing is reduced to a corresponding value using a third spacing adjustment coefficient of 0.75;
[0086] The second displacement difference is the difference between the anchor rod displacement value and the preset displacement value.
[0087] In the embodiment of the present invention, the third preset displacement difference is 8 mm, and the fourth preset displacement difference is 15 mm, but the above values are not limited thereto, and those skilled in the art may adjust the values according to actual needs.
[0088] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.
[0089] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.
Claims
1. A method for detecting the construction quality of slope support, characterized in that: include: Surveying the slope to obtain slope dimension information and soil quality information, and determining anchor rod setting parameters based on the dimension information and the soil quality information, wherein the setting parameters include anchor rod setting angle, spacing, and depth; Performing performance tests on the completed anchor bolts and obtaining stability characteristic values, wherein the performance tests include angle tests and tension tests; Determining the eligibility of the construction of a single anchor rod based on the stability characteristic value of the single anchor rod, wherein if the stability characteristic value is less than a first preset stability threshold, the construction of the single anchor rod is determined to be qualified, and the performance tests of the remaining anchor rods are completed; If the stability characteristic value is greater than or equal to the first preset stability threshold and less than the second preset stability threshold, the construction of the single anchor is determined to be unqualified, and ultrasonic detection is performed on the interior of the slope to obtain a defect index and the eligibility of the anchor construction is re-determined based on the defect index; If the stability characteristic value is greater than or equal to the second preset stability threshold, the construction of the single anchor is determined to be unqualified, and the grouting pressure during the anchor construction process is increased according to the difference between the stability characteristic value and the second preset stability threshold; Under the condition that the anchor bolt construction is judged unqualified for the second time, the qualification of the anchor bolt construction in the area is judged according to the qualified rate of the anchor bolts in the preset area; Under the condition that the regional anchor construction fails to meet the standards, the cause of the unqualified slope support construction shall be determined based on the unqualified anchor position and the anchor elevation angle shall be increased or the anchor spacing shall be reduced; Under the condition that the anchor bolt construction in each area is qualified, the construction of trenching, tying steel bars and pouring concrete is completed to complete the construction of slope support; After the preset construction period, the average settlement and deformation value of the slope support is tested; The eligibility of slope support construction is determined based on the average settlement deformation value. If the construction fails, the anchor displacement value of the block with a settlement deformation value greater than the preset settlement deformation value is detected. The cause of the failure is analyzed based on the displacement value and an adjustment strategy is determined. The stability characteristic value is determined by the angle deviation value and the tension value of the anchor rod; The qualification of anchor bolt construction is determined twice based on the defect index, among which: If the defect index is less than the preset defect index, the anchor bolt construction is judged as qualified for the second time, and the performance test of the remaining anchor bolts is completed; If the defect index is greater than or equal to the preset defect index, the anchor construction is judged as unqualified for the second time, and the qualification of the anchor construction is judged based on the qualified rate of anchors in a preset area.
2. The method for detecting the construction quality of slope support according to claim 1, characterized in that: The qualification of the anchor rod construction is determined based on the qualified rate of the anchor rods in the preset area. If the qualified rate is less than the preset qualified rate, the anchor rod construction is determined to be unqualified, and the adjustment strategy is determined based on the position of the unqualified anchor rods; if the qualified rate is greater than or equal to the preset qualified rate, the anchor rod construction is determined to be qualified, and the slope support construction is completed.
3. The construction quality inspection method of slope support according to claim 2 is characterized in that: The adjustment strategy is determined based on the location of the non-compliant anchor, where: If the anchor rod is located in the upper part of the slope, the adjustment strategy is to add anchor rods; if the anchor rod is located in the middle part of the slope, the adjustment strategy is to re-construct. If the anchor is located at the bottom of the slope, the adjustment strategy is to increase the depth of the anchor.
4. The method for detecting the construction quality of slope support according to claim 3, characterized in that: Several adjustment methods are provided for the grouting pressure, and each adjustment method has a different adjustment range for the grouting pressure.
5. The method for detecting the construction quality of slope support according to claim 4, characterized in that: The average settlement deformation value detection process includes: Set up several monitoring points on the slope; Use a level and a total station to monitor several monitoring points for a preset time period; After the monitoring is completed, the settlement and deformation values are determined based on the settlement and displacement values of a single monitoring point; The average settlement deformation value of several monitoring points is recorded as the average settlement deformation value.
6. The method for detecting the construction quality of slope support according to claim 5, characterized in that: The eligibility of the slope support construction is determined based on the average settlement deformation value, wherein if the average settlement deformation value is less than a preset settlement deformation value, the slope support construction is determined to be qualified, and the slope support construction quality inspection is completed; If the average settlement deformation value is greater than or equal to the preset settlement deformation value, the slope support construction is judged to be unqualified, and the reason for the unqualified slope support construction is analyzed based on the anchor displacement value of a single monitoring point whose settlement deformation value is greater than the preset settlement deformation value.
7. The method for detecting the construction quality of slope support according to claim 6, characterized in that: Determining the reason for the unqualified slope support construction based on the anchor rod displacement value, wherein, if the anchor rod displacement value is less than a preset displacement value, determining that the reason for the unqualified slope support construction is that the angle of the anchor rod does not meet the standard, and increasing the elevation angle of the anchor rod in the vertical plane normal to the slope according to the difference between the preset displacement value and the anchor rod displacement value; If the anchor rod displacement value is greater than or equal to the preset displacement value, it is determined that the reason for the unqualified slope support construction is that the anchor rod spacing does not meet the standard, and the anchor rod spacing is reduced according to the difference between the anchor rod displacement value and the preset displacement value.
Citation Information
Patent Citations
BIM-based foundation pit support excavation quality control method
CN111597625A