CJJ 57-1994 Specification for Engineering Geological Survey for Urban Planning
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Engineering Construction Standard Full Text Information System
Industry Standard of the People's Republic of China
Code for Urban Planning Engineering Geological Investigation and SurveyingGJJ57—94
1994Beijing
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Industry Standard of the People's Republic of China
Code for Urban Planning Engineering Geological Investigation and Surveying surveyingGJJ57—94
Editing unit: Beijing Municipal Surveying Institute
Approving department: Ministry of Construction of the People's Republic of ChinaEffective date: November 1, 1994
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Notice on the Release of the Industry Standard "Specifications for Engineering Geological Survey for Urban Planning"
Jianbiao [1994] No. 337
In accordance with the requirements of the former State Administration of Urban Construction (81) Chengke No. 15 document, the "Specifications for Engineering Geological Survey for Urban Planning" edited by Beijing Municipal Surveying Institute has been reviewed and approved as an industry standard, with the number CJJ57-94, and will be implemented on November 1, 1994.
This standard is managed by the Ministry of Construction's Survey and Geotechnical Engineering Standards and Technology Unit, the Ministry of Construction's Comprehensive Survey Research Institute, and the specific interpretation and other work is the responsibility of the editor-in-chief. The Ministry of Construction's Standards and Norms Research Institute organizes the publication. Ministry of Construction of the People's Republic of China
May 26, 1994bzxZ.net
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General Provisions·
Engineering geological survey in the overall planning stage
Engineering geological survey in the detailed planning stage
Basic requirements for data collation and report preparation Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Geotechnical test items
Contents of investigation and prediction of adverse geological conditions and environmental engineering geological problems...
Site stability classification
Site Classification of suitability for engineering construction.
Outline for preparation of urban planning survey report
Outline for preparation of survey report body
Outline for preparation of engineering geological map system
Explanation of terms used in this specification
Additional explanation··
Appendix·Explanation of clauses
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1 General provisions
This specification is formulated to implement the national technical and economic policies in urban planning engineering geological survey, to achieve advanced technology, economic rationality, safety and applicability, and to ensure quality. 1.0.2
This specification is applicable to engineering geological surveys for various types of urban planning. The engineering geological survey for urban planning must be combined with the task requirements, adapted to local conditions, and various survey methods must be selected and used to provide survey results that meet the requirements of urban planning. In the survey work, effective new technologies (such as remote sensing, electronic computer technology, etc.) and new theories of geological disciplines should be actively adopted.
1.0.4 In addition to complying with this specification, the engineering geological survey for urban planning should also comply with the relevant provisions of the current national standards.
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General Provisions
The engineering geological survey stage for urban planning should be adapted to the planning stage. It is divided into the overall planning survey stage (referred to as the overall planning survey) and the detailed planning survey stage (referred to as the detailed planning survey).
The engineering geological survey for urban planning should be mainly based on the collection, collation, analysis and utilization of existing data and engineering geological mapping and investigation, supplemented by necessary exploration and testing work. 2.0.3 The work content, work methods and workload of urban planning engineering geological survey shall be determined by comprehensively considering the following factors:
The survey stage and its task requirements;
The complexity of the geographical and geological characteristics and engineering geological conditions of the planning area; the existing data and the degree of research on the engineering geological environment characteristics of the planning area, and the local engineering construction experience.
Each site within the urban planning area shall be classified according to Table 2.0.4 based on its site conditions and the complexity of the foundation.
Site classification
1. Sites and sections with earthquake-resistant dangers for buildings according to the current national "Code for Seismic Design of Buildings"
2. Unfavorable geological phenomena are strongly developed
3. The geological environment has been or may be severely damaged
1. Sites and sections with earthquake-resistant dangers for buildings according to the current national "Code for Seismic Design of Buildings"
2. Dynamic geological phenomena are generally developed
3. The geological environment has been or may be generally damaged
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1. The earthquake fortification intensity is 6 degrees or below, or according to the current 1. Sites and areas favorable for building earthquake resistance as defined by the national "Code for Seismic Design of Buildings" in force. 2. Unfavorable geological phenomena are not developed. 3. The geological environment is basically intact. 4. Complex topography and landforms. 5. There are many types of rock and soil, and the properties change greatly. The groundwater has a great impact on the project and requires special treatment. 6. Complex changes and strong effects. Special rock and soil. 4. Complex topography and landforms. 5. There are many types of rock and soil, and the properties change greatly. The groundwater has an adverse effect on the project.
6. General special features not belonging to Class 1
Continued Table 2.0.4
4. Simple topography
5. Single type of rock and soil, small change in properties
, no impact of groundwater on the project
6. Non-special rock and soil
Note: ① Items not listed in the table can be inferred by comparison according to their complexity; ② Starting from Class I, inferring to Class I and Class II, if one of the six items belongs to Class I, it is classified as a Class I site, and so on.
During the detailed planning and investigation stage, the level of the proposed project in the near-term construction area should be classified according to the severity of the consequences of the project damage caused by the foundation damage (endangering human life, causing economic losses and social impacts and the possibility of repair), according to Table 2.0.5. Engineering level
Engineering level
Consequences of damage
Very serious
Not serious
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Project type
Major projects: high-rise buildings with more than 20 floors, high-rise buildings with more than 14 floors with complex shapes, buildings with special requirements for foundation deformation, buildings with single pile loads of more than 4000kN;
Sewage treatment plants with more than 120,000t, etc.
General projects
Minor projects
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3 Engineering Geological Survey in the Master Planning Stage
The master planning survey shall evaluate the stability of each site in the planning area and the suitability of engineering construction, and provide engineering geological basis for determining the nature of the city, the scale of development, the rational selection of various urban land uses, functional zoning and the overall deployment of various constructions, as well as the preparation of various professional master plans. It shall also study and predict the changing trends of geological environmental impacts and possible environmental geological problems during the implementation of the plan and the long-term development, and put forward corresponding suggestions and prevention and control measures. 3.0.2 The master planning survey work shall meet the following requirements: 3.0.2.1
Collect, organize, analyze and study existing data and literature; investigate and understand local engineering construction experience.
3.0.2.2 Investigate and understand the topography, geology (strata, structure) and geomorphic features of each site in the planning area, the spatial distribution law of foundation rock and soil and its physical and mechanical properties, the genetic type, spatial distribution, occurrence and inducing conditions of dynamic geological effects, and their impact on site stability and its development trend. In addition, investigate and understand the typical properties of the special rock and soil in the planning area.
3.0.2.3. Investigate and understand the groundwater types, burial, flow and discharge conditions, groundwater levels and their variation, groundwater pollution conditions of each site in the planning area, and take representative water samples for water quality analysis. In the planning area where long-term groundwater observation data is lacking, a long-term groundwater observation network should be established to conduct long-term observation of groundwater levels and water quality. 3.0.2.4 For cities in earthquake zones, the seismic geological background and basic earthquake intensity of the planning area should be investigated and understood. For planning areas with earthquake fortification intensity equal to or greater than 7 degrees, the seismic effects of the site and foundation should also be determined. In the process of planning implementation and long-term development, investigations, research and predictions should be made on environmental engineering geological problems caused by changes in geological conditions or human activities. 3.0.2.6 Comprehensively analyze the characteristics of engineering geology (topography, rock and soil properties, groundwater, dynamic geological action and geological disasters, etc.) of each site in the planning area and their relationship with engineering construction, carry out engineering geological zoning according to site characteristics, stability and suitability for engineering construction, and closely combine with task requirements to carry out land use control analysis and prepare urban master planning survey report.
3.0.3 Before the master planning survey, the following documents and drawings must be obtained: 3.0.3.1 The survey task book issued by the urban planning department, and shall be accompanied by the scope map of the urban master planning area (urban area, new development area and satellite town) and documents such as urban category, nature, development scale and key construction area. 3.0.3.2
The current topographic map of the planning area, the scale of which should be 1:10000~125000 for large and medium-sized cities; 1:5000~1:10000 for urban areas, new development zones and satellite towns of various cities, and 1:50000~1:10000 for urban area system planning maps.
The data collected for the overall planning survey should meet the following requirements: 3.0.4.1
The space and aerial remote sensing images and their interpretation data of the planning area and its adjacent areas.
The historical geography of the planning area, the changes in the coastline of rivers, lakes and lakes, the historical evolution of the city and the changes in the city site, the distribution and evolution of buried rivers, lakes, ditches and pits, etc. 3.0.4.3
Data on basic climate characteristics, temperature (average temperature, maximum temperature, minimum temperature, distribution of four seasons, heating and heatstroke prevention and cooling period, frost-free period, maximum freezing depth), precipitation (precipitation amount, precipitation intensity), wind (wind direction, wind speed, wind outlet), air pressure, humidity, sunshine (sunshine hours, sunshine angle) and disastrous weather and other meteorological elements in the planning area. 3.0.4.4
Hydrological data such as water system distribution, drainage area, river and sea water level, flow, flow rate, water volume and flood inundation boundary, flood disasters in the planning area, as well as data on existing water conservancy and flood control facilities.
Data on regional geology, Quaternary geology, geomorphology, hydrogeology and engineering geology, as well as long-term groundwater observation and building settlement observation. 3.0.4.6
Seismological data, such as active tectonic systems and deep geological structures, recent crustal deformation observations, historical earthquakes and current earthquake activity characteristics and tectonic activity characteristics, earthquake hazard zones, basic earthquake intensity and macro-seismic damage, earthquake liquefaction and other strong earthquake ground damage effects, strong earthquake observation records, and earthquake response analysis. Engineering Construction Standards Full Text Information System
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7Distribution, quantity, development and utilization value of natural resources (water resources, mineral resources and fuel power resources, natural building materials resources, and tourist landscape resources).
Data on the distribution of underground engineering facilities (subway, civil air defense projects, etc.) and underground goafs.
Data on the current land use status.
Data on local engineering construction experience.
Engineering geological mapping and investigation for overall planning survey shall meet the following requirements: 3.0.5.1
The scope of engineering geological mapping and investigation shall include the planning area and the adjacent areas that are important for understanding the strata, geological structure, geomorphic features and site stability of the planning area.
The mapping accuracy of the measured geological boundaries and geomorphic boundaries shall not exceed 3mm on the corresponding scale map.
Geological units that are of special significance to engineering construction (such as collapse, landslide, staggered, fault zone, weak interlayer, shore scour zone, cave, spring, etc.) shall be mapped and, if necessary, can be expressed at an enlarged scale.
The drawing scale of the topographic map used for engineering geological mapping and investigation should be one level larger than the drawing scale of the result map. 3.0.5.4
The density of observation points depends on the complexity of the engineering geological conditions of the site, the scale of the map, and the characteristics and scale of the engineering construction. The location should be representative, and the number should be based on the principle of being able to control important geological and geomorphic boundaries and grasp the basic situation of the current characteristics of the engineering geological environment of each site in the planning area. The spacing of observation points on the map should be controlled at 2 to 6 cm; it can also be appropriately increased or relaxed according to the complexity of the engineering geological conditions of the site and the degree of influence on the engineering construction.
There should be observation points on geological structural lines, stratum contact lines, lithological boundaries, standard layers and each unit body. 3.0.5.6 Observation points should make full use of natural and artificial outcrops. When there are few outcrops, a certain number of drilling and trenching work can be arranged according to the specific situation if necessary. When conditions are suitable for work, physical exploration work can be carried out in conjunction. 3.0.5.7
7 Engineering geological mapping and investigation generally include the following contents: (1) Study the topography and geomorphic features, divide the geomorphic units, analyze the formation process of each geomorphic unit, their mutual relationship and their relationship with the strata, structure and adverse geological phenomena; (2) The nature, genetic type, age, thickness and distribution range of rocks and soils. For bedrock, the weathering degree and the contact relationship of different strata should be ascertained; for soil layers, emphasis should be placed on distinguishing the types, distribution range and engineering geological characteristics of recent accumulation soils and special soils; (3) The occurrence and structural type of rock strata, the occurrence and properties of weak structural surfaces, such as the location, type, occurrence, fault throw, width of fractured zones and filling and cementation of faults, the characteristics of rock-rock contact surfaces and weak interlayers, the traces and characteristics of Quaternary tectonic activities and their relationship with seismic activities, as well as the arrangement sequence and combination relationship with the main structures in the region; (4) The types of groundwater, the location and recharge of wells and springs Source, discharge conditions, lithological characteristics of aquifers, reservoir depth, water level change range and pollution conditions and their relationship with surface water bodies, etc., and investigate and study the impact of the rise and fall of groundwater levels on special rock bodies such as disintegrating rock, expansive rock, saline rock and soil on engineering construction, as well as the collapse of rock and soil and ground subsidence caused by excessive groundwater withdrawal; (5) Flood inundation range, accumulation, flow and discharge of river water levels and atmospheric precipitation, and the distribution range of waterlogging; (6) Karst, caves, landslides, collapses, gullies, mudslides; faults, earthquake liquefaction, ground fissures, shore scour, shore sliding: frost heave, thaw subsidence, thermal melt landslides, etc. Distribution, morphology, scale, development and the degree of influence on engineering construction; (7) Investigation and study of the deformation of existing buildings and construction experience, as well as the prevention and control measures and experience of site stability problems and adverse geological phenomena caused by human engineering activities.
The exploration work of the overall planning survey should be carried out on the basis of fully collecting, analyzing and utilizing existing data and engineering geological mapping and investigation. The layout of exploration points, exploration lines and networks should meet the following requirements:
The exploration line should be perpendicular to the boundary line of geomorphic units, geological structure and stratigraphic boundary Engineering Construction Standard Full Text Information System
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Exploration points should be arranged according to the exploration line, and exploration points should be arranged at the intersection of each geomorphic unit and different geomorphic units. At the same time, the exploration points should be denser in areas with large changes in micro-topography and stratigraphic changes.
Class I Site
Class Site
Heavy Class Site
In the straight class site with simple engineering geology, the exploration points can be arranged according to the grid. The exploration line and point spacing should meet the requirements of Table 3.0.6. Spacing between exploration lines and points (m)
Big city, medium
300~500
500~800
8001000
Small city, satellite town of big city
500~700
700~1000
1000~1500
Big city, medium
200~400
400~600
600~800
Note: ① The categories of cities are classified according to the provisions of the Urban Planning Law of the People's Republic of China; ② Exploration points include drill holes, exploration wells, shovel holes and in-situ test holes. Table 3.0.6
Small cities, satellite towns of large cities
400~600
600~800
800~1000
When arranging exploration holes according to Table 3.0.6, full use should be made of the existing exploration data. When the existing exploration point data can meet the exploration line and point spacing specified in the table and meet the requirements of Articles 3.0.7 and 3.0.8 of this section, exploration points may not be arranged. In the urban areas and key development zones of large and medium-sized cities, the exploration line and point spacing can be determined according to the minimum values specified in Table 3.0.6; in the suburbs of large and medium-sized cities, the exploration line and point spacing can be determined according to the maximum values specified in the table.
3.0.7 The exploration holes for overall planning survey can be divided into two categories: general holes and control holes. Their depths
should be determined according to the task requirements and geotechnical conditions: the depth of general exploration holes should be 8~15m; the depth of control exploration holes should be 15~30m. Control exploration holes should account for 1/5~1/3 of the total number of exploration holes. Each geomorphic unit should have control exploration holes, and the number should not be less than 3. In the event of any of the following circumstances, the depth of the exploration holes should be appropriately increased or decreased: 3.0.7.1 When the terrain of the site is undulating, the hole engineering 8 construction standard full-text information system
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