Pipe network topological relation checking and repairing method

Abstract

The invention discloses a pipe network topological relation checking and repairing method, which comprises the following steps: selecting a pipe network path with a known flow direction, and measuringinitial inner bottom elevation values of all nodes of the pipe network according to the sequence of the flow direction; traversing all the pipe sections sequentially in the flowing direction of the pipe network path, and calculating the gradient of each pipe section; checking whether the gradient data has a negative value or not; removing negative value data, forming a data set by using residualnon-negative value slope data, identifying abnormal slope data, counting normal slope data, and obtaining an interval range [smin, smax] of a normal slope; identifying the gradient data as the starting node and the stopping node of the pipe section corresponding to the negative gradient and the abnormal gradient data to form an abnormal node set, adjusting the inner bottom elevation value of the abnormal node in the abnormal node set, and enabling the abnormal node with the abnormal inner bottom elevation to exist in the abnormal node set. The invention has the advantages of realizing automatic identification, automatic modification and optimization of the inner bottom elevation of the abnormal node of the pipe network, and being convenient, quick, efficient and accurate.

Description

technical field

[0001] The invention relates to the technical field of drainage pipe network, in particular to a method for checking and repairing the topological relationship of the pipe network. Background technique

[0002] The urban underground drainage network has the characteristics of a large system, strong concealment, and prominent safety problems. Problems such as incomplete and unclear information grasp provide guarantees for the safe operation of the urban drainage system and the improvement of quality and efficiency. The general survey of the basic information of the drainage pipe network is mainly the general survey of the basic information such as the location, connection, elevation, buried depth and length of drainage pipes, culverts, inspection wells, inspection wells, rainwater grates and other drainage facilities. Among them, the elevation data of pipe network nodes such as inspection wells and inspection wells, including ground elevation and inner bottom...

Examples

Embodiment 1

[0076] A method for checking and repairing the topological relationship of a pipe network, comprising the following steps:

[0077] S1. Select a pipe network path with known flow direction in the pipe network to be inspected, mark n nodes according to the order of flow direction, measure the initial invert elevation values ​​of all nodes in the pipe network, and ensure the starting position of the node The initial invert elevation value is accurate;

[0078] S2. The pipelines between adjacent nodes form a pipe section, traverse all pipe sections in sequence along the flow direction of the pipe network path, calculate the slope of each pipe section, and obtain the slope data of the pipe section;

[0079] The slope data of the pipe section in S2 is obtained using the following model:

[0080]

[0081] Wherein, i is the i-th node of the pipe network path, a total of n nodes, i=1 is the node of the starting position of the pipe network path from upstream, L i,i+1 Indicates th...

Embodiment 2

[0137] This embodiment discloses a method for checking and repairing the topological relationship of the drainage pipe network by adopting the method for checking and repairing the topological relationship of the pipe network in the above embodiment.

[0138] Such as image 3 As shown, it is the topological structure of the drainage pipe network, where the labels prefixed with "MH" indicate inspection well nodes, the labels prefixed with "O" indicate outlet nodes, and the labels prefixed with "CO" indicate pipe sections. According to the location of the water outlet of the pipe network, the elevation of the urban terrain and the characteristics of the water system, the water flow direction of the pipe network can be determined, as shown by the arrow in the figure. Table 1 shows the relevant parameters of inspection wells and water outlet nodes, and Table 2 shows the parameters of each pipe section. It is known that the invert elevations of the upstream start nodes MH-1, MH-13...

technical field

[0001] The invention relates to the technical field of drainage pipe network, in particular to a method for checking and repairing the topological relationship of the pipe network. Background technique

[0002] The urban underground drainage network has the characteristics of a large system, strong concealment, and prominent safety problems. Problems such as incomplete and unclear information grasp provide guarantees for the safe operation of the urban drainage system and the improvement of quality and efficiency. The general survey of the basic information of the drainage pipe network is mainly the general survey of the basic information such as the location, connection, elevation, buried depth and length of drainage pipes, culverts, inspection wells, inspection wells, rainwater grates and other drainage facilities. Among them, the elevation data of pipe network nodes such as inspection wells and inspection wells, including ground elevation and inner bottom...

Examples

Embodiment 1

[0076] A method for checking and repairing the topological relationship of a pipe network, comprising the following steps:

[0077] S1. Select a pipe network path with known flow direction in the pipe network to be inspected, mark n nodes according to the order of flow direction, measure the initial invert elevation values ​​of all nodes in the pipe network, and ensure the starting position of the node The initial invert elevation value is accurate;

[0078] S2. The pipelines between adjacent nodes form a pipe section, traverse all pipe sections in sequence along the flow direction of the pipe network path, calculate the slope of each pipe section, and obtain the slope data of the pipe section;

[0079] The slope data of the pipe section in S2 is obtained using the following model:

[0080]

[0081] Wherein, i is the i-th node of the pipe network path, a total of n nodes, i=1 is the node of the starting position of the pipe network path from upstream, L i,i+1 Indicates th...

Embodiment 2

[0137] This embodiment discloses a method for checking and repairing the topological relationship of the drainage pipe network by adopting the method for checking and repairing the topological relationship of the pipe network in the above embodiment.

[0138] Such as image 3 As shown, it is the topological structure of the drainage pipe network, where the labels prefixed with "MH" indicate inspection well nodes, the labels prefixed with "O" indicate outlet nodes, and the labels prefixed with "CO" indicate pipe sections. According to the location of the water outlet of the pipe network, the elevation of the urban terrain and the characteristics of the water system, the water flow direction of the pipe network can be determined, as shown by the arrow in the figure. Table 1 shows the relevant parameters of inspection wells and water outlet nodes, and Table 2 shows the parameters of each pipe section. It is known that the invert elevations of the upstream start nodes MH-1, MH-13...

Images