Construction and safety evaluation method of safety evaluation model for high slope construction

Abstract

The invention provides a construction and safety evaluation method of a safety evaluation model for high slope construction, and the method comprises the steps: obtaining historical accident information corresponding to a high slope based on a preset high slope construction database, and determining an accident type corresponding to the high slope and a construction stage of an accident based on the historical accident information corresponding to the high slope; based on the accident type corresponding to the high slope and the construction stage of the accident, determining the occurrence frequency of each type of accident in different construction stages of the high slope, and determining the accident high-occurrence construction stage of the high slope; based on corresponding working conditions when an accident occurs in the accident-prone construction stage of the high slope, determining an accident association index corresponding to the accident-prone construction stage of the high slope, a weight of the accident association index and a risk score; the safety evaluation model for high slope construction is constructed based on the accident association index corresponding to the high-incidence construction stage of the high slope accident, the weight of the accident association index and the risk score, and the accuracy and efficiency of safety evaluation can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of road engineering, and in particular to the construction of a safety evaluation model for high slope construction and a safety evaluation method. Background Art

[0002] High slopes are a high-risk link in highway construction, and production safety accidents are frequent. Therefore, a comprehensive risk assessment must be carried out before construction on high slopes in order to prevent safety risks.

[0003] The current high-slope construction safety assessment program usually conducts an overall risk assessment on the high-slope projects along the entire construction project before construction. On the basis of the overall risk assessment, a special risk assessment process such as risk identification, analysis, and estimation is carried out on the high-slope projects along the cuttings that reach a high risk or above, so as to quantitatively assess the major risk sources and classify the risk levels, thereby facilitating the subsequent formulation of precise risk control measures.

[0004] Although the above scheme can achieve the safety assessment of high slope construction, the entire assessment process is carried out before construction, and the actual construction conditions during the construction process may deviate from the expected ones. Therefore, the current high slope construction safety assessment scheme is often not accurate enough for the safety assessment results, resulting in production safety accidents still occurring from time to time. At the same time, the current high slope construction safety assessment scheme is often jointly assessed by multiple professional and technical personnel, which not only consumes manpower and material resources, but also often causes construction progress delays because the assessment process requires complex calculations and demonstrations. Summary of the invention

[0005] The invention provides a construction of a safety evaluation model for high slope construction and a safety evaluation method, which are used to solve the problems of inaccurate safety evaluation results and low evaluation efficiency in the current high slope construction safety evaluation scheme.

[0006] In one aspect, the present invention provides a method for constructing a safety assessment model for high slope construction, comprising:

[0007] Based on a preset high slope construction database, historical accident information corresponding to high slopes of different heights is obtained, and based on the historical accident information corresponding to high slopes of different heights, the accident types corresponding to high slopes of different heights and the construction stages in which the accidents occurred are determined;

[0008] Based on the accident types corresponding to high slopes of different heights and the construction stages at which the accidents occurred, the occurrence frequencies of various types of accidents at different construction stages of high slopes of different heights were determined;

[0009] Based on the frequency of various types of accidents at different construction stages of high slopes at different heights, determine the construction stages with high accident incidence at high slopes at different heights;

[0010] Based on the corresponding working conditions when various types of accidents occur during the accident-prone construction stages of high-slopes at different heights, the corresponding accident-related indicators, the weights of each accident-related indicator, and the risk scores corresponding to the states of each accident-related indicator are determined;

[0011] A safety evaluation model for high slope construction is constructed based on the accident-related indicators corresponding to the high-incidence construction stages of high slope accidents at different heights, the weights of each accident-related indicator and the risk score corresponding to the status of each accident-related indicator.

[0012] In an optional embodiment of the present application, the safety evaluation model for high slope construction is used to determine the accident correlation index corresponding to the current construction stage of the target high slope construction node based on the high slope height of the target high slope construction node and the accident correlation index corresponding to the current construction stage and the high-incidence construction stage of high slope accidents at different heights;

[0013] Determine the current risk score of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node based on the current state of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node and the risk score corresponding to the state of each accident-related indicator;

[0014] Based on the weights of the accident-related indicators corresponding to the current construction stage of the target high slope construction node and the current risk score, the current accident possibility value of the target high slope construction node is determined.

[0015] In an optional embodiment of the present application, the current accident possibility value of the target high slope construction node is determined based on the weight of the accident-related index corresponding to the current construction stage of the target high slope construction node and the current risk score, including:

[0016] Based on the weights of the accident-related indicators corresponding to the current construction stage of the target high-slope construction node and the current risk score, determine the accident contribution value of each accident-related indicator corresponding to the current construction stage of the target high-slope construction node; for any target accident-related indicator, the accident contribution value of the target accident-related indicator is the product of the weight of the target accident-related indicator and the current risk score;

[0017] The accident contribution values ​​of the accident-related indicators corresponding to the current construction stage of the target high slope construction node are summed to obtain the current accident possibility value of the target high slope construction node.

[0018] In an optional embodiment of the present application, the historical accident information includes the type of accident, the construction stage where the accident occurred, and indication information of the corresponding working conditions when the accident occurred.

[0019] In an optional embodiment of the present application, the accident types include: slope instability, landslide, slope disease and falling from height; the construction stages include: slope excavation stage, surface drainage system setting stage, anti-slide retaining wall setting stage, anti-slide pile setting stage, prestressed anchor project setting stage, soil nail wall setting stage, grouting reinforcement stage, underground drainage tunnel setting stage, slope plant protection stage and slope skeleton protection stage.

[0020] In an optional embodiment of the present application, the determining of the accident-prone construction stages of high slopes at different heights based on the occurrence frequencies of various types of accidents at different construction stages of high slopes at different heights includes:

[0021] For a high slope of a target height, based on the sum of the occurrence frequencies of various types of accidents during the target construction phase of the high slope of the target height, determine the accident frequency sequences corresponding to different construction phases of the high slope of the target height;

[0022] Based on the accident frequency sequences corresponding to different construction stages of the high slope of the target height and the preset frequency thresholds, the accident-prone construction stage of the high slope of the target height is determined.

[0023] In an optional embodiment of the present application, the construction stages with high accident incidence are the slope excavation stage, the anti-slide retaining wall setting stage, the anti-slide pile setting stage, the prestressed anchor project setting stage, the grouting reinforcement stage and the underground drainage tunnel setting stage.

[0024] In an optional embodiment of the present application, the accident-related indicators corresponding to the high-incidence construction stages of high-incidence high-slopes at different heights, the weights of the accident-related indicators, and the risk scores corresponding to the states of the accident-related indicators are determined based on the corresponding working conditions when various types of accidents occur during the high-incidence construction stages of high-slopes at different heights, specifically including:

[0025] Based on the ReliefF algorithm, the accident correlation indicators corresponding to the high-incidence construction stages of high-incidence construction stages of high-incidence slopes at different heights are selected from the corresponding working conditions when various types of accidents occur in the high-incidence construction stages of high-incidence slopes at different heights;

[0026] Based on the special risk assessment results of accident correlation corresponding to the high-incidence construction stages of high-slope accidents at different heights in the high-slope construction database, the weights of each accident-related indicator corresponding to the high-incidence construction stages of high-slope accidents at different heights and the risk score corresponding to the status of each accident-related indicator are determined.

[0027] In an optional embodiment of the present application, the working conditions include geological conditions, environmental conditions, meteorological conditions and construction conditions;

[0028] Correspondingly, the accident-related indicators corresponding to the slope excavation stage are: slope rate, excavation method, process connection method, rock property change, slope structure change, groundwater change, construction weather and construction surrounding environment;

[0029] The accident-related indicators corresponding to the anti-slide retaining wall setting stage are: wall height, structure type, foundation burial depth, foundation stratum conditions, geological conformity of the bearing layer, groundwater conditions, excavation segmentation method, scaffolding height and surrounding environment;

[0030] The accident-related indicators corresponding to the anti-slide pile setting stage are: pile length, pile type, stratum conditions, terrain conditions, groundwater conditions, pile hole construction method, slot-hopping construction method, harmful gas status, surrounding environment and ventilation and lighting status;

[0031] The accident-related indicators corresponding to the prestressed anchoring project setting stage are: working height, working slope, drilling depth, anchoring structure type, anchoring return force structure, anchoring section stratum, groundwater level, process connection method, drilling method, scaffolding height, surrounding environment, construction weather and wind conditions;

[0032] The accident-related indicators corresponding to the grouting reinforcement stage are: micropile diameter, slope terrain conditions, slope stability, grouting method, grouting pressure, construction site environment and surrounding environment;

[0033] The accident-related indicators corresponding to the underground drainage tunnel setting stage are: the maximum inner diameter of the tunnel section, stratum conditions, conformity of geological conditions, groundwater, progress of primary blasting, excavation method, support method and surrounding environment.

[0034] In a second aspect, the present invention further provides a safety evaluation method for a safety evaluation model for high slope construction, the method being applied to the safety evaluation model for high slope construction constructed by the above method, comprising:

[0035] Based on the high slope height of the target high slope construction node and the accident correlation indicators corresponding to the current construction stage and the high-incidence construction stages of high slope accidents at different heights, the accident correlation indicators corresponding to the current construction stage of the target high slope construction node are determined;

[0036] Determine the current risk score of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node based on the current state of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node and the risk score corresponding to the state of each accident-related indicator;

[0037] Based on the weights of the accident-related indicators corresponding to the current construction stage of the target high-slope construction node and the current risk score, the current accident possibility value of the target high-slope construction node is determined;

[0038] The current state of the accident-related index corresponding to the current construction stage of the target high-slope construction node is collected based on monitoring equipment set at the target high-slope construction node.

[0039] The present invention provides a construction and safety evaluation method for a safety evaluation model for high slope construction, which obtains historical accident information corresponding to high slopes of different heights based on a preset high slope construction database, and determines the accident types corresponding to high slopes of different heights and the construction stages where the accidents occurred based on the historical accident information corresponding to high slopes of different heights; determines the occurrence frequencies of various types of accidents at different construction stages of high slopes of different heights based on the accident types corresponding to high slopes of different heights and the construction stages where the accidents occurred; determines the accident-prone construction stages of high slopes of different heights based on the occurrence frequencies of various types of accidents at different construction stages of high slopes of different heights; and determines the accident-prone construction stages of high slopes of different heights based on the occurrence of various types of accidents at the accident-prone construction stages of high slopes of different heights. According to the corresponding working conditions, the accident-related indicators corresponding to the construction stages with high incidence of high-slope accidents at different heights, the weights of each accident-related indicator and the risk scores corresponding to the status of each accident-related indicator are determined; based on the accident-related indicators corresponding to the construction stages with high incidence of high-slope accidents at different heights, the weights of each accident-related indicator and the risk scores corresponding to the status of each accident-related indicator, a safety evaluation model for high slope construction is constructed, which can quickly construct an accurate safety evaluation model for high slope construction based on the historical accident information of the high slope. At the same time, the safety evaluation model for high slope construction can quickly evaluate the safety of high slope construction, which solves the problems of inaccurate safety evaluation results and low evaluation efficiency of the current safety evaluation scheme for high slope construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic flow chart of a method for constructing a safety evaluation model for high slope construction provided by the present invention;

[0042] Figure 2 A flow chart for determining the accident-prone construction phase provided by the present invention;

[0043] Figure 3 It is a schematic diagram of a process for determining accident-related indicators, accident-related indicator weights and risk scores provided by the present invention;

[0044] Figure 4A schematic flow chart of a safety evaluation method for a safety evaluation model for high slope construction provided by the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Figure 1 A schematic diagram of a method for constructing a safety assessment model for high slope construction provided by the present invention is shown in FIG. Figure 1 As shown, the method may include:

[0047] Step 101, based on a preset high slope construction database, historical accident information corresponding to high slopes of different heights is obtained, and based on the historical accident information corresponding to high slopes of different heights, the accident types corresponding to high slopes of different heights and the construction stages where the accidents occurred are determined.

[0048] Specifically, based on the foregoing content, it can be known that although the current high-slope construction safety assessment scheme can achieve high-slope construction safety assessment, since the entire assessment process is carried out before construction, and the actual construction conditions during the construction process may deviate from expectations, the current high-slope construction safety assessment scheme is often not accurate enough for the safety assessment results, resulting in production safety accidents still occurring from time to time. At the same time, the current high-slope construction safety assessment scheme is often jointly assessed by multiple professional and technical personnel, which not only consumes manpower and material resources, but also often causes construction progress delays because the assessment process requires complex calculations and demonstrations. Based on this, the embodiment of the present application proposes a method for constructing a safety assessment model for high-slope construction, and the safety assessment model for high-slope construction constructed by this method can accurately and efficiently conduct high-slope construction safety assessment.

[0049] More specifically, the embodiment of the present application collects historical accident information corresponding to high slopes of different heights in advance through a big data system to form a high slope construction database. The historical accident information includes the type of accident, the construction stage where the accident occurred, and the indication information of the corresponding working conditions when the accident occurred. Based on this, the embodiment of the present application can quickly determine the type of accident corresponding to high slopes of different heights and the construction stage where the accident occurred based on the high slope construction database. It can be understood that the types of accidents include: slope instability, landslides, slope diseases and falls from heights; the construction stages include: slope excavation stage, surface drainage system setting stage, anti-sliding retaining wall setting stage, anti-sliding pile setting stage, prestressed anchoring engineering setting stage, soil nail wall setting stage, grouting reinforcement stage, underground drainage tunnel setting stage, slope plant protection stage and slope skeleton protection stage. Based on this, the comprehensiveness and accuracy of the accident data can be guaranteed, thereby ensuring the accuracy of the evaluation results of the safety evaluation model for high slope construction constructed later.

[0050] Step 102, based on the accident types corresponding to high slopes of different heights and the construction stages at which the accidents occurred, the occurrence frequencies of various types of accidents at different construction stages of high slopes of different heights are determined.

[0051] Specifically, since the construction of high slopes is carried out in stages, the working conditions faced at different construction stages are different, so the types of accidents and the frequency of accidents are also different. Based on this, after determining the types of accidents corresponding to high slopes of different heights and the construction stages where accidents occur, the embodiment of the present application further determines the frequency of each type of accident at different construction stages of high slopes of different heights based on the types of accidents corresponding to high slopes of different heights and the construction stages where accidents occur. Based on this, the frequency of each type of accident at different construction stages of high slopes of different heights can be accurately determined, thereby excluding the construction stages with lower accident frequencies, reducing the amount of calculation for high slope construction safety assessment, and improving assessment efficiency.

[0052] Step 103, based on the occurrence frequencies of various types of accidents at different construction stages of high slopes at different heights, determine the accident-prone construction stages of high slopes at different heights.

[0053] Specifically, Figure 2 The flowchart for determining the accident-prone construction stage provided by the present invention is as follows: Figure 2 As shown, the accident-prone construction stages of high slopes at different heights are determined based on the occurrence frequencies of various types of accidents at different construction stages of high slopes at different heights, including:

[0054] Step 1031, for a high slope of target height, based on the sum of occurrence frequencies of various types of accidents in a target construction stage of the high slope of target height, determine the accident frequency sequences corresponding to different construction stages of the high slope of target height;

[0055] Step 1032, based on the accident frequency sequences corresponding to different construction stages of the high slope of the target height and the preset frequency threshold, determine the accident-prone construction stage of the high slope of the target height.

[0056] It is understandable that high slopes generally refer to soil slopes higher than 20m and rock slopes higher than 30m. Since there are fewer samples of historical accident information on rock slopes, the embodiments of the present application mainly conduct construction safety assessments on soil slopes. Based on this, the target height can be any value higher than 20m. Since there may be multiple types of accidents corresponding to the target construction stage of the high slope of the target height, and the ultimate goal of the embodiments of the present application is to avoid safety risks, the sum of the occurrence frequencies of various types of accidents in the target construction stage of the high slope of the target height described in the embodiments of the present application is used as the accident frequency corresponding to the target construction stage of the high slope of the target height, and then the accident frequency sequence corresponding to different construction stages of the high slope of the target height can be determined. Based on this, it is possible to avoid missing possible safety accidents during the safety assessment process to the greatest extent.

[0057] On the basis of the above, based on the accident frequency sequences and preset frequency thresholds corresponding to different construction stages of the high slope of the target height, the accident-prone construction stage of the high slope of the target height can be determined. It can be understood that the preset frequency threshold can be determined based on safety requirements, and the embodiment of the present application does not make specific limitations here. The accident-prone construction stages finally determined by the embodiment of the present application are the slope excavation stage, the anti-sliding retaining wall setting stage, the anti-sliding pile setting stage, the prestressed anchoring project setting stage, the grouting reinforcement stage, and the underground drainage tunnel setting stage.

[0058] Step 104, based on the corresponding working conditions when various types of accidents occur during the accident-prone construction stages of high-slopes at different heights, determine the accident-related indicators corresponding to the accident-prone construction stages of high-slopes at different heights, the weights of each accident-related indicator, and the risk score corresponding to the status of each accident-related indicator.

[0059] Specifically, it is worth noting that the historical accident information also includes the corresponding working condition indication information when the accident occurred, and the working condition conditions include geological conditions, environmental conditions, meteorological conditions and construction conditions. Based on this, the embodiment of the present application can quickly determine the accident-related indicators based on the corresponding working condition indication information when the accident occurred, thereby avoiding the analysis and processing of massive indicators while maximizing the accuracy of the safety assessment results. More specifically, Figure 3 FIG. 1 is a flow chart of determining the accident-related index, the weight of the accident-related index and the risk score provided by the present invention, such as Figure 3As shown, based on the corresponding working conditions when various types of accidents occur in the accident-prone construction stages of high-slopes at different heights, the accident-related indicators corresponding to the accident-prone construction stages of high-slopes at different heights, the weights of each accident-related indicator and the risk score corresponding to the state of each accident-related indicator are determined, specifically including:

[0060] Step 1041, based on the ReliefF algorithm, select accident-related indicators corresponding to the accident-prone construction stages of high-slopes at different heights from the corresponding working conditions when various types of accidents occur during the accident-prone construction stages of high-slopes at different heights;

[0061] Step 1042, based on the special risk assessment results of accidents associated with the high-incidence construction stages of high-incidence high-slope accidents at different heights in the high-slope construction database, determine the weights of each accident-associated indicator corresponding to the high-incidence construction stages of high-slope accidents at different heights and the risk score corresponding to the status of each accident-associated indicator.

[0062] The ReliefF algorithm is a mature feature selection algorithm. Based on the ReliefF algorithm, the embodiment of the present application can quickly and accurately screen out the accident-related indicators corresponding to the high-incidence construction stages of high-incidence high-slope accidents at different heights from the corresponding working conditions when various types of accidents occur in the high-incidence construction stages of high-incidence high-slope accidents at different heights. It is also worth noting that the current high-slope construction safety assessment scheme stipulates that a special risk assessment of the construction process is required when a production safety accident occurs. Based on this, it can be understood that the historical accident information of the embodiment of the present application also includes the special risk assessment results corresponding to the accident. The special risk assessment is obtained by comprehensive assessment by multiple technical experts, and the steering risk assessment result includes the assessment results of the accident-related indicators, the weights of the accident-related indicators, and the risk scores corresponding to the states of the accident-related indicators. Based on this, the embodiment of the present application can determine the weights of each accident-related indicator corresponding to the high-incidence construction stages of high-incidence high-slope accidents at different heights and the risk scores (percentage system) corresponding to the states of each accident-related indicator based on the special risk assessment results of the accident association corresponding to the high-incidence construction stages of high-incidence high-slope accidents at different heights in the high-slope construction database.

[0063] It is worth noting that, under normal circumstances, the accident-related indicators corresponding to the high-incidence construction stage of high-slope accidents obtained based on the ReliefF algorithm will be consistent with the special risk assessment results associated with the accidents. However, in the actual assessment process, due to negligence in manual assessment, the number of accident-related indicators corresponding to the high-incidence construction stage of high-slope accidents obtained based on the ReliefF algorithm is often greater than the special risk assessment results associated with the accidents. When faced with this situation, the embodiment of the present application will be based on the accident-related indicators obtained by the ReliefF algorithm, and determine the weight value of each accident-related indicator based on the importance ranking method. That is, the accident-related indicators are sorted by importance, and the weight values ​​are taken as if the difference in the weight coefficients of adjacent indicators is the same. Based on this, the accuracy and efficiency of the safety assessment can be taken into account.

[0064] The accident-related indicators corresponding to the slope excavation stage finally determined in the embodiment of the present application are: slope rate (i.e., the slope value of the road cutting slope exceeding the analog slope of the natural slope, the larger the value, the higher the score), excavation method (different methods are assigned different risk scores), process connection method (different process connection methods are assigned different risk scores), lithology change (different risk scores are assigned based on the difference between the bedrock weathering category revealed by excavation and the prior judgment), slope structure change (different risk scores are assigned based on the difference between the continuity and filling conditions of the structural surface revealed by excavation and the prior judgment), groundwater change (different risk scores are assigned based on the type of groundwater, the distribution of aquifers, and the size of water content), construction weather (different risk scores are assigned based on the rainfall level in the area where the slope is located) and the surrounding environment of the construction (different risk scores are assigned based on the distance between the surface buildings, underground buried objects, high-voltage line towers, water facilities and the excavation line at the top of the slope);

[0065] The accident-related indicators corresponding to the anti-slide retaining wall setting stage are: wall height, structure type, foundation depth, foundation stratum conditions (different risk scores are assigned based on stratum soil type), geological conformity of the bearing layer (different risk scores are assigned based on the degree of conformity), groundwater conditions (different risk scores are assigned based on the distance of the foundation below the groundwater level), excavation segmentation method, scaffolding height and surrounding environment (different risk scores are assigned based on whether there are landslide bodies, rivers, or lakes around the pile position);

[0066] The accident-related indicators corresponding to the anti-slide pile setting stage are: pile length, pile type, stratum conditions (different risk scores are assigned based on whether wall shrinkage, hole collapse, mud and water inrush will occur during the excavation process), terrain conditions (different risk scores are assigned based on terrain slope), groundwater conditions (different risk scores are assigned based on groundwater exposure at the construction site), pile hole construction method, slot-hopping construction method, harmful gas status (different risk scores are assigned based on the content of hydrogen sulfide, gas, carbon monoxide, carbon dioxide, etc.), surrounding environment (different risk scores are assigned based on whether there are landslides, rivers, or lakes around the pile position), and ventilation and lighting conditions (different risk scores are assigned based on the ventilation and lighting conditions at the site);

[0067] The accident-related indicators corresponding to the prestressed anchoring project setting stage are: working height (different risk scores are assigned based on the height of the working area), working slope (different risk scores are assigned based on the working slope), drilling depth (different risk scores are assigned based on the drilling depth), anchoring structure type, anchoring return force structure, anchoring section stratum (different risk scores are assigned based on the difficulty of drilling), groundwater level (different risk scores are assigned based on the groundwater pressure range of the anchoring section during construction), process connection method, drilling method, scaffolding height, surrounding environment (different risk scores are assigned based on the engineering grade of the underground and surface within the drilling depth range), construction weather (different risk scores are assigned based on rain, fog, snow, frost, freezing and other weather conditions) and wind conditions;

[0068] The accident-related indicators corresponding to the grouting reinforcement stage are: micropile diameter, slope terrain conditions (different risk scores are assigned based on softness, fragmentation, and water-rich conditions), slope stability, grouting method, grouting pressure, construction site environment (different risk scores are assigned based on visibility and noise conditions), and surrounding environment (different risk scores are assigned based on the height and hydraulic connectivity of water bodies such as rivers and lakes near the grouting area);

[0069] The accident-related indicators corresponding to the underground drainage tunnel setting stage are: the maximum inner diameter of the tunnel section, geological conditions (different risk scores are assigned according to the surrounding rock type), compliance with geological conditions, groundwater (different risk scores are assigned based on the groundwater exposure at the construction site), primary blasting progress, excavation method, support method and surrounding environment (different risk scores are assigned based on whether there are landslides, rivers or lakes around the pile position).

[0070] It is understandable that the specific risk score formulation strategy for the above accident-related indicators can directly adopt the strategy in the special risk assessment results related to accidents.

[0071] Step 105, constructing a safety evaluation model for high slope construction based on the accident-related indicators corresponding to the high-incidence construction stages of high slope accidents at different heights, the weights of each accident-related indicator, and the risk scores corresponding to the states of each accident-related indicator.

[0072] Specifically, in summary, after determining the accident-related indicators corresponding to the construction stages with high incidence of high-slope accidents at different heights, the weights of each accident-related indicator, and the risk scores corresponding to the status of each accident-related indicator, the embodiment of the present application can construct a safety evaluation model for high-slope construction based on the accident-related indicators corresponding to the construction stages with high incidence of high-slope accidents at different heights, the weights of each accident-related indicator, and the risk scores corresponding to the status of each accident-related indicator. More specifically, the safety evaluation model for high-slope construction is used to determine the accident-related indicators corresponding to the current construction stage of the target high-slope construction node based on the high-slope height of the target high-slope construction node and the accident-related indicators corresponding to the construction stages with high incidence of high-slope accidents at different heights;

[0073] Determine the current risk score of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node based on the current state of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node and the risk score corresponding to the state of each accident-related indicator;

[0074] Based on the weights of the accident-related indicators corresponding to the current construction stage of the target high slope construction node and the current risk score, the current accident possibility value of the target high slope construction node is determined.

[0075] The method of determining the current accident possibility value of the target high slope construction node based on the weight of the accident-related index corresponding to the current construction stage of the target high slope construction node and the current risk score includes:

[0076] Based on the weights of the accident-related indicators corresponding to the current construction stage of the target high-slope construction node and the current risk score, determine the accident contribution value of each accident-related indicator corresponding to the current construction stage of the target high-slope construction node; for any target accident-related indicator, the accident contribution value of the target accident-related indicator is the product of the weight of the target accident-related indicator and the current risk score;

[0077] The accident contribution values ​​of the accident-related indicators corresponding to the current construction stage of the target high slope construction node are summed to obtain the current accident possibility value of the target high slope construction node.

[0078] It is worth noting that the current status of the accident-related indicators corresponding to the current construction stage of the target high slope construction node is collected based on the monitoring equipment set at the target high slope construction node. Based on this, the safety evaluation model for high slope construction constructed in the embodiment of the present application can perform real-time evaluation of construction safety during the construction process, thereby maximizing the efficiency and accuracy of the safety evaluation.

[0079] The solution provided by the present invention obtains historical accident information corresponding to high slopes of different heights based on a preset high slope construction database, and determines the accident types corresponding to high slopes of different heights and the construction stages in which the accidents occurred based on the historical accident information corresponding to high slopes of different heights; determines the occurrence frequencies of various types of accidents in different construction stages of high slopes of different heights based on the accident types corresponding to high slopes of different heights and the construction stages in which the accidents occurred; determines the accident-prone construction stages of high slopes of different heights based on the occurrence frequencies of various types of accidents in different construction stages of high slopes of different heights; determines different accident-prone construction stages based on the corresponding working conditions when various types of accidents occur in the accident-prone construction stages of high slopes of different heights The accident-related indicators corresponding to the construction stages with high incidence of high-altitude high-slope accidents, the weights of each accident-related indicator and the risk scores corresponding to the status of each accident-related indicator; based on the accident-related indicators corresponding to the construction stages with high incidence of high-altitude high-slope accidents at different heights, the weights of each accident-related indicator and the risk scores corresponding to the status of each accident-related indicator, a safety evaluation model for high-slope construction is constructed, which can quickly construct an accurate safety evaluation model for high-slope construction based on the historical accident information of the high slope. At the same time, the safety evaluation model for high-slope construction can quickly conduct safety assessment of high-slope construction, which solves the problems of inaccurate safety assessment results and low assessment efficiency of the current safety assessment scheme for high-slope construction.

[0080] Figure 4 A schematic flow chart of a safety evaluation method for a safety evaluation model for high slope construction provided by the present invention, such as Figure 4 As shown, the method is applied to the safety evaluation model for high slope construction constructed by the above method, including:

[0081] Step 201, based on the high slope height of the target high slope construction node and the accident correlation indicators corresponding to the current construction stage and the construction stages with high incidence of high slope accidents at different heights, determine the accident correlation indicators corresponding to the current construction stage of the target high slope construction node.

[0082] Step 202, based on the current state of the accident-related indicators corresponding to the current construction stage of the target high slope construction node and the risk score corresponding to the state of each accident-related indicator, determine the current risk score of the accident-related indicators corresponding to the current construction stage of the target high slope construction node.

[0083] Step 203, determining the current accident possibility value of the target high slope construction node based on the weight of the accident-related index corresponding to the current construction stage of the target high slope construction node and the current risk score;

[0084] The current state of the accident-related index corresponding to the current construction stage of the target high-slope construction node is collected based on monitoring equipment set at the target high-slope construction node.

[0085] The specific principle has been discussed in the above embodiments and will not be repeated here.

[0086] The solution provided by the present invention determines the accident-related indicators corresponding to the current construction stage of the target high slope construction node based on the high slope height of the target high slope construction node and the accident-related indicators corresponding to the current construction stage and the construction stage with high incidence of high slope accidents at different heights; determines the current risk score of the accident-related indicators corresponding to the current construction stage of the target high slope construction node based on the current state of the accident-related indicators corresponding to the current construction stage of the target high slope construction node and the risk score corresponding to the state of each accident-related indicator; determines the current accident possibility value of the target high slope construction node based on the weight of the accident-related indicators corresponding to the current construction stage of the target high slope construction node and the current risk score; wherein the current state of the accident-related indicators corresponding to the current construction stage of the target high slope construction node is obtained based on the collection of monitoring equipment arranged at the target high slope construction node, and can accurately and efficiently evaluate the safety during the high slope construction process, thereby timely and accurately determining the safety risks.

[0087] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0088] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for constructing a safety assessment model for high slope construction, characterized in that: include: Based on a preset high slope construction database, historical accident information corresponding to high slopes of different heights is obtained, and based on the historical accident information corresponding to high slopes of different heights, the accident types corresponding to high slopes of different heights and the construction stages in which the accidents occurred are determined; Based on the accident types corresponding to high slopes of different heights and the construction stages at which the accidents occurred, the occurrence frequencies of various types of accidents at different construction stages of high slopes of different heights were determined; Based on the frequency of various types of accidents at different construction stages of high slopes at different heights, determine the construction stages with high accident incidence at high slopes at different heights; Based on the corresponding working conditions when various types of accidents occur during the accident-prone construction stages of high-slopes at different heights, the corresponding accident-related indicators, the weights of each accident-related indicator, and the risk scores corresponding to the states of each accident-related indicator are determined; A safety evaluation model for high slope construction is constructed based on the accident-related indicators corresponding to the high-incidence construction stages of high slope accidents at different heights, the weights of each accident-related indicator and the risk score corresponding to the status of each accident-related indicator.

2. The method according to claim 1, characterized in that The safety evaluation model for high slope construction is used to determine the accident correlation index corresponding to the current construction stage of the target high slope construction node based on the high slope height of the target high slope construction node and the accident correlation index corresponding to the current construction stage and the high-incidence construction stage of high slope accidents at different heights; Determine the current risk score of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node based on the current state of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node and the risk score corresponding to the state of each accident-related indicator; Based on the weights of the accident-related indicators corresponding to the current construction stage of the target high slope construction node and the current risk score, the current accident possibility value of the target high slope construction node is determined.

3. The method according to claim 2, characterized in that The method of determining the current accident possibility value of the target high slope construction node based on the weight of the accident-related index corresponding to the current construction stage of the target high slope construction node and the current risk score includes: Based on the weights of the accident-related indicators corresponding to the current construction stage of the target high-slope construction node and the current risk score, determine the accident contribution value of each accident-related indicator corresponding to the current construction stage of the target high-slope construction node; for any target accident-related indicator, the accident contribution value of the target accident-related indicator is the product of the weight of the target accident-related indicator and the current risk score; The accident contribution values ​​of the accident-related indicators corresponding to the current construction stage of the target high slope construction node are summed to obtain the current accident possibility value of the target high slope construction node.

4. The method according to claim 3, characterized in that The historical accident information includes the accident type, the construction stage where the accident occurred, and indication information of the corresponding working conditions when the accident occurred.

5. The method according to claim 4, characterized in that The accident types include: slope instability, landslides, slope diseases and falls from heights; the construction stages include: slope excavation stage, surface drainage system setting stage, anti-slide retaining wall setting stage, anti-slide pile setting stage, prestressed anchor project setting stage, soil nail wall setting stage, grouting reinforcement stage, underground drainage tunnel setting stage, slope plant protection stage and slope skeleton protection stage.

6. The method according to claim 5, characterized in that The method of determining the accident-prone construction stages of high slopes at different heights based on the occurrence frequencies of various types of accidents at different construction stages of high slopes at different heights includes: For a high slope of a target height, based on the sum of the occurrence frequencies of various types of accidents during the target construction phase of the high slope of the target height, determine the accident frequency sequences corresponding to different construction phases of the high slope of the target height; Based on the accident frequency sequences corresponding to different construction stages of the high slope of the target height and the preset frequency thresholds, the accident-prone construction stage of the high slope of the target height is determined.

7. The method according to claim 6, characterized in that The construction stages with high accident incidence are the slope excavation stage, anti-slide retaining wall setting stage, anti-slide pile setting stage, prestressed anchor project setting stage, grouting reinforcement stage and underground drainage tunnel setting stage.

8. The method according to claim 7, characterized in that The method of determining the accident-related indicators corresponding to the high-incidence construction stages of high-slopes at different heights, the weights of the accident-related indicators, and the risk scores corresponding to the states of the accident-related indicators based on the corresponding working conditions when various types of accidents occur during the high-incidence construction stages of high-slopes at different heights, specifically includes: Based on the ReliefF algorithm, the accident correlation indicators corresponding to the high-incidence construction stages of high-incidence construction stages of high-incidence slopes at different heights are selected from the corresponding working conditions when various types of accidents occur in the high-incidence construction stages of high-incidence slopes at different heights; Based on the special risk assessment results of accident correlation corresponding to the high-incidence construction stages of high-slope accidents at different heights in the high-slope construction database, the weights of each accident-related indicator corresponding to the high-incidence construction stages of high-slope accidents at different heights and the risk score corresponding to the status of each accident-related indicator are determined.

9. The method according to claim 8, characterized in that The working conditions include geological conditions, environmental conditions, meteorological conditions and construction conditions; Correspondingly, the accident-related indicators corresponding to the slope excavation stage are: slope rate, excavation method, process connection method, rock property change, slope structure change, groundwater change, construction weather and construction surrounding environment; The accident-related indicators corresponding to the anti-slide retaining wall setting stage are: wall height, structure type, foundation burial depth, foundation stratum conditions, geological conformity of the bearing layer, groundwater conditions, excavation segmentation method, scaffolding height and surrounding environment; The accident-related indicators corresponding to the anti-slide pile setting stage are: pile length, pile type, stratum conditions, terrain conditions, groundwater conditions, pile hole construction method, slot-hopping construction method, harmful gas status, surrounding environment and ventilation and lighting status; The accident-related indicators corresponding to the prestressed anchoring project setting stage are: working height, working slope, drilling depth, anchoring structure type, anchoring return force structure, anchoring section stratum, groundwater level, process connection method, drilling method, scaffolding height, surrounding environment, construction weather and wind conditions; The accident-related indicators corresponding to the grouting reinforcement stage are: micropile diameter, slope terrain conditions, slope stability, grouting method, grouting pressure, construction site environment and surrounding environment; The accident-related indicators corresponding to the underground drainage tunnel setting stage are: the maximum inner diameter of the tunnel section, stratum conditions, conformity of geological conditions, groundwater, progress of primary blasting, excavation method, support method and surrounding environment.

10. A safety evaluation method for a safety evaluation model for high slope construction, characterized in that: The method is applied to a safety assessment model for high slope construction constructed by the method described in claim 9, comprising: Based on the high slope height of the target high slope construction node and the accident correlation indicators corresponding to the current construction stage and the high-incidence construction stages of high slope accidents at different heights, the accident correlation indicators corresponding to the current construction stage of the target high slope construction node are determined; Determine the current risk score of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node based on the current state of the accident-related indicator corresponding to the current construction stage of the target high-slope construction node and the risk score corresponding to the state of each accident-related indicator; Based on the weights of the accident-related indicators corresponding to the current construction stage of the target high-slope construction node and the current risk score, the current accident possibility value of the target high-slope construction node is determined; The current state of the accident-related index corresponding to the current construction stage of the target high-slope construction node is collected based on monitoring equipment set at the target high-slope construction node.

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