CN111080167A - Underground space resource quality assessment method for urban planning - Google Patents

Underground space resource quality assessment method for urban planning Download PDF

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CN111080167A
CN111080167A CN201911387812.5A CN201911387812A CN111080167A CN 111080167 A CN111080167 A CN 111080167A CN 201911387812 A CN201911387812 A CN 201911387812A CN 111080167 A CN111080167 A CN 111080167A
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underground space
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刘宏
张智峰
唐菲
王海丰
肖秋凤
田野
常伟
曹继勇
杨明霞
王若男
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Nanjing Wisusp Urban Program Design Co ltd
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Abstract

The invention provides an underground space resource quality assessment method for urban planning, which comprises the following steps: step 1: determining an evaluation unit; step two: determining an influence factor of the underground space resource quality; step three: establishing a fuzzy mathematics comprehensive evaluation model; step four: determining the weight by expert consultation and an analytic hierarchy process; step five: extracting evaluation data; step six: carrying out fuzzy comprehensive judgment; step seven: and analyzing and applying the judgment result.

Description

Underground space resource quality assessment method for urban planning
Technical Field
The invention belongs to the field of planning and design, and particularly relates to a resource utilization layer in urban underground space planning.
Background
In the time before the underground space is not utilized as the natural resource in the united nations, the underground space resource assessment work is not well emphasized by people, and no people carry out overall and global assessment on the underground space resource. Until the development of underground space in the last ten years, the evaluation work of urban underground space resources in foreign countries gradually starts, and with the continuous deepening of the development and utilization of urban underground space, the theory and method for evaluating the underground space resources are continuously improved and innovated.
In a research of Finland, which is named as 'undergarded Space in the Planning and Land Use', according to the current situation of Underground Space Planning and the investigation and analysis of the Use conditions of the existing Underground buildings, Finland proposes to classify according to the construction difficulty of rock areas, evaluate the influence of various Underground buildings on the environment and the investment of the Underground buildings, and propose the depth of the distribution of various functions in the Underground Space of cities.
The planning research of the underground space of the local area carried out in Singapore proposes that site selection is the most important in the underground engineering planning stage, and the influence of geological, hydrological, environmental, psychological and ground development, social, economic and political factors must be comprehensively considered.
In the strategic research of underground space utilization in the netherlands, a method for evaluating the necessity of underground space utilization is provided, the method considers different urban functions, different urban areas and different economic development levels for evaluation, and evaluation indexes comprise: cost, external security, internal security, the living environment of nearby residents, the user's position (including the user's personal position and the position where the urban function is implemented), the use of space (including the efficiency of use of space and the quality of space), and the impact on the environment. The research result shows that the factors which do not generally support the utilization of underground space in the evaluation index are as follows: cost, internal security, and user standpoint; factors that support the use of underground space are: exterior safety, residential environment of nearby residents, and use of space. Studies have also shown that there is no significant correlation between the environmental impact of underground space development.
In addition, the practices of developed countries such as the United states, Japan, Canada, France and the like also show that the adoption of feasibility research and scientific resource evaluation and planning is very important for the integrity and the benefit of underground space development.
The comprehensive quality of the urban underground space resources is an overall measure of the developability of the underground space resources and can be represented by relative scores and grades after evaluation. The quality of urban underground space resources is evaluated, and the method is a scientific basis for formulating resource development and utilization plans and adopting reasonable development modes and measures.
The comprehensive quality evaluation of urban underground space resources is a comprehensive concept, and has many related factors, and reflects that many index factors are needed in the evaluation, and some key indexes which have dominant factors for the evaluation need to be selected, wherein the key indexes comprise: evaluating regional geological background factors (regional geological conditions, stability of underground rock-soil mass, groundwater)
Etc.), developed and utilized underground space factors (subways, underground commercial streets, underground civil air defense projects, underground pipe networks, etc.) and ground space current situation factors (important buildings, general buildings, historical relics, roads, squares, greenbelts, etc.), urban planning influence on the underground space, and influence of underground space development depth on underground space development, etc. The urban underground space resource comprehensive evaluation is established, an urban underground space resource evaluation theory and method are established, the urban underground space comprehensive evaluation method has important significance for perfecting urban underground space planning in theory and practice, guidance basis is provided for scientific utilization and planning of urban underground spaces, underground spaces are reasonably utilized, and sustainable development of the urban underground spaces is promoted. The quality grade of underground space resources is evaluated in a multi-level and uncertain mode, all factors interact and are mutually restricted, and a large amount of uncertainty and inaccuracy exist among all factors. This uncertainty and inaccuracy is random and more ambiguous.
In view of the above, there is a need for a new evaluation method to solve the quality problem of underground space resources.
Disclosure of Invention
The purpose of the invention is as follows: the invention discloses a method for evaluating urban underground space resources, which is used for evaluating the comprehensive quality grade of underground space resources, can meet the requirement of grading the quality of the space resources in urban underground space planning, implements graded utilization, provides an important basis for underground space planning and lays a foundation for sustainable development.
The technical scheme is as follows: in order to achieve the purpose, the invention can adopt the following technical scheme:
an assessment method of underground space resource quality for urban planning comprises the following steps: step 1: determining an evaluation unit; step 2: determining a control factor affecting the quality of the underground space resources; and step 3: establishing a fuzzy comprehensive evaluation model; and 4, step 4: determining the weight by expert consultation and an analytic hierarchy process; and 5: extracting evaluation data; step 6: dividing the comprehensive quality of underground space resources into four levels for evaluation, and evaluating the four levels by adopting fuzzy comprehensive evaluation; and 7: evaluation result analysis and application, and evaluation of underground space resource quality can better provide decision basis for development of underground space, so that development decision blindness is avoided.
Furthermore, in step 2, the urban underground space resource comprehensive quality grade evaluation index can be divided into a quantitative index and a qualitative index from a measuring and calculating method, the quality grade evaluation selects typical key indexes with leading functions from three different levels to establish an evaluation index system, starting from the stability of a large aspect, namely regional geology, the regional stability of an evaluation unit is taken as an evaluation index, and the quality of the underground space resource is comprehensively evaluated by considering external factors such as the stability of the rock (soil) body and the influence of underground water of the evaluation unit, the influence of ground buildings, the development depth and the like.
Further, in step 3, many factors are often considered to evaluate the quality of the underground space resources. These factors are, above all, different in their respective properties, importance and comparability. Secondly, when the attribute indexes of all factors are evaluated and measured, the method has great inaccuracy and subjective experience. Therefore, the quality evaluation and the preference of underground space resources are a multi-level and multi-attribute decision problem of a complex system in a fuzzy environment.
Furthermore, in step 4, an analytic hierarchy process is adopted, which is a simple method for making a decision on a complex and fuzzy problem, and is particularly suitable for the problem that complete quantitative analysis is difficult. Hierarchical analysis
The process can be divided into three basic steps: (1) establishing a hierarchical structure model; (2) constructing all judgment matrixes in each layer; (3) and (5) carrying out hierarchical single ordering and consistency check.
Further, in step 5, extracting evaluation data for each evaluation factor in the evaluation area range;
further, in step 6, the comprehensive quality of underground space resources is divided into four levels for evaluation, and fuzzy comprehensive evaluation is adopted to evaluate the comprehensive quality;
has the advantages that: the urban underground space resource comprehensive evaluation is established, an urban underground space resource evaluation theory and method are established, the urban underground space comprehensive evaluation method has important significance for perfecting urban underground space planning in theory and practice, guidance basis is provided for scientific utilization and planning of urban underground spaces, underground spaces are reasonably utilized, and sustainable development of the urban underground spaces is promoted.
Drawings
FIG. 1 is a flow chart of resource quality assessment of the present invention;
FIG. 2 is a flowchart of the resource quality assessment model evaluation procedure of the present invention;
FIG. 3 is a diagram illustrating multi-level fuzzy evaluation according to an embodiment;
FIG. 4 is a schematic illustration of an example geospatial resource quality distribution.
Detailed Description
Referring to fig. 1 and 2, the present invention discloses a method for evaluating the quality of underground space resources for urban planning, which includes the following steps: 1: determining an evaluation unit; step two: determining a main control factor influencing the quality of underground space resources; step three: establishing a fuzzy mathematics comprehensive evaluation model; step four: determining the weight by expert consultation and an analytic hierarchy process; step five: extracting evaluation data; step six: carrying out fuzzy comprehensive judgment; step seven: and analyzing and applying the judgment result.
The present invention is further illustrated by the following examples, which are illustrative of the present invention and are not to be construed as being limited thereto.
The method for evaluating resources in consideration of multiple factors in the embodiment comprises the following steps:
by applying the factor sets and the established membership functions, multi-level fuzzy evaluation can be performed on the quality of urban underground space resources, the values of the calculation parameters are shown in table 1, and a multi-level fuzzy evaluation schematic diagram is shown in fig. 3.
TABLE 1 table for values of evaluation factors of examples
Figure 443200DEST_PATH_IMAGE001
Firstly, evaluating a secondary index, taking hydrogeological conditions as an example, and obtaining a single factor evaluation according to a membership function as follows: and (3) evaluating a single factor of the buried depth of the underground water level: (0,1,0,0)
And (3) single-factor evaluation of water inflow of a single well: (1,0,0,0)
And (3) single-factor evaluation of the PH value of underground water: (0,0,0,1)
Namely, it is
Figure 24354DEST_PATH_IMAGE002
The fuzzy weight vector is A3= 0.3, 0.5, 0.2, using the dominant factor saliency operator:
Figure 359521DEST_PATH_IMAGE003
，j=1,2,…，mand carrying out fuzzy comprehensive evaluation:
Figure 275393DEST_PATH_IMAGE004
obtained B3And (4) explaining the membership degree of the overall underground water situation to each level of fuzzy subset, wherein the value of the membership degree participates in the primary evaluation of the urban underground space resources.
And (3) evaluating the rock mass structure in the same way: b is2= (0.145, 0.145, 0.71, 0)
And (3) geological structure: b is1= (0.5, 0.5, 0, 0)
Therefore, using the data obtained above, a first order fuzzy comprehensive evaluation was performed as follows:
Figure 291890DEST_PATH_IMAGE005
= (0.1964, 0.142, 0.230, 0.0785)
and synthesizing results by adopting a principal factor prominent operator, and analyzing the fuzzy comprehensive evaluation result by adopting a maximum membership method to obtain the underground space resource quality II of the evaluation area. According to the same method, all the evaluation units can extract the evaluation data one by one for evaluation, so that the underground space resource quality level distribution of the whole area can be obtained, and an underground space resource quality distribution diagram (as shown in fig. 4) is drawn according to the underground space resource quality level distribution diagram for guiding the urban underground space development and utilization planning.
In addition, the present invention has many specific implementations and ways, and the above description is only a preferred embodiment of the present invention. It should be noted that various modifications and adaptations can be made by those skilled in the art without departing from the principles of the present invention, and should be considered within the scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.

Claims (8)

1. An assessment method of underground space resource quality for city planning comprises the following steps:
step 1: determining an evaluation unit;
step 2: determining a control factor affecting the quality of the underground space resources;
and step 3: establishing a fuzzy comprehensive evaluation model;
and 4, step 4: determining the weight by expert consultation and an analytic hierarchy process;
and 5: extracting evaluation data;
step 6: dividing the comprehensive quality of underground space resources into four levels for evaluation, and evaluating the four levels by adopting fuzzy comprehensive evaluation;
and 7: evaluation result analysis and application, and evaluation of underground space resource quality can better provide decision basis for development of underground space, so that development decision blindness is avoided.
2. The method of assessing the quality of resources in an underground space of an urban plan as claimed in claim 1, wherein: the evaluation adopts the subarea block evaluation to carry out unit division on the evaluation planning area, generally based on the urban road network, and the adjacent same geological units are classified as the same evaluation area unit.
3. The method of assessing the quality of resources in an underground space of an urban plan as claimed in claim 1, wherein: many factors are often considered in evaluating the quality of underground space resources.
4. The method for evaluating the quality of underground space resources for urban planning according to claim 1, 2 or 3, wherein: and evaluating the quality by adopting a fuzzy mathematics comprehensive evaluation method.
5. The method of assessing the quality of underground space resources for urban planning as claimed in claim 4, wherein: establishing a fuzzy comprehensive evaluation model, which comprises the following steps: according to the fuzzy mathematical theory, firstly, an evaluation object set X = { X =1,x2…, quality factor set U = { U = { U }1, u2,…, un}, call uiIs caused by massSub, evaluation level set V = { V =1, v2,…,vmGenerally, a unified standard exists for each quality factor, and the quality factors are mostly presented in a digital form, and the quality evaluation standard can give an index of the grade and can also be a range of the grade; next, for each object to be evaluatedx k For each quality factor u by sampling inspectioniAll have a measured valuey i Then get corresponding tox k Measurement index vector Y ofk={y1, y1, yn}；
Thus, the device is provided withu ij (y i ) Can expressx k Relative to the factoru i Is subject to gradev i To the extent of, take
Figure 726605DEST_PATH_IMAGE002
ThenR k Is aboutx k Is/are as followsUAndVgiven a weight assignment a = (a)1,a2,…an)
Figure 708640DEST_PATH_IMAGE004
Computing
Figure 659278DEST_PATH_IMAGE006
According to the maximum membership rule, if
Figure 479467DEST_PATH_IMAGE008
Then, evaluate xkBelong to vj0And (4) stages.
6. The method of assessing the quality of resources in an underground space of an urban plan as claimed in claim 1, wherein: and consulting domain experts, judging evaluation indexes by the domain experts, and calculating the obtained data by using an analytic hierarchy process to obtain index weight required by comprehensive evaluation.
7. The method of assessing the quality of resources in an underground space of an urban plan as claimed in claim 1, wherein: the basic data required for evaluation is derived from objective evaluation of the evaluation area with respect to the evaluation index.
8. The method of assessing the quality of resources in an underground space of an urban plan as claimed in claim 1, wherein: the evaluation result adopts four-level evaluation, which means a comprehensive evaluation index of the development and utilization degree of the urban underground space and is expressed by relative grading after the comprehensive index evaluation.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111768361A (en) * 2020-05-09 2020-10-13 中铁第四勘察设计院集团有限公司 Underground space quality evaluation and visual presentation method and system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111768361A (en) * 2020-05-09 2020-10-13 中铁第四勘察设计院集团有限公司 Underground space quality evaluation and visual presentation method and system thereof
CN111768361B (en) * 2020-05-09 2022-12-02 中铁第四勘察设计院集团有限公司 Underground space quality evaluation and visual presentation method and system thereof

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