GBJ 108-1987 Technical specification for waterproofing of underground projects GBJ108-87
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Engineering Construction Standard Full Text Information System
National Standard of the People's Republic of China
Technical Specification for Waterproofing of Underground Engineering
GBJ108-87
1989 Beijing
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Announcement on Partial Revision of Engineering Construction Standard
No. 15
National Standard "Technical Specification for Waterproofing of Underground Engineering" GBJ108-87 has been partially revised by the Third Research Institute of the Engineering Corps of the General Staff and relevant units. It has been reviewed by relevant departments and the partially revised provisions are now approved for implementation from January 15, 1999. The provisions of the corresponding provisions in the specification are abolished at the same time. This is hereby announced. Ministry of Construction of the People's Republic of China
December 23, 1998
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National Standard of the People's Republic of China
Technical Specification for Waterproofing of Underground Projects
GBJ108-87
Editing Department: Office of the State Committee for Air Defense Approving Department: State Planning Commission of the People's Republic of China Effective Date: July 1, 1988
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Notice on the Release of "Technical Specification for Waterproofing of Underground Projects"
Ji Biao [1987] No. 1847
According to the notice of the State Planning Commission's Ji Zong [1985] No. 1 document, the "Technical Specification for Waterproofing of Underground Projects" jointly formulated by the Office of the State Committee for Air Defense and relevant departments has been reviewed by relevant departments. The Technical Specification for Waterproofing of Underground Engineering GBJ108-87 is now approved as a national standard and will be implemented from July 1, 1988. This standard is managed by the Office of the People's Air Defense Committee. The specific interpretation and other work shall be undertaken by the Third Research Institute of the Engineering Corps of the General Staff of the Chinese People's Liberation Army, and the publication and distribution shall be undertaken by the China Planning Press.
National Planning Commission
October 14, 1987
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Preparation Instructions
This specification is edited by the Office of the National People's Air Defense Committee in accordance with the requirements of the National Planning Commission's Document No. 1 [1985], and is specifically compiled by the Third Research Institute of the Engineering Corps of the General Staff and relevant units.
During the preparation process, this specification was compiled on the basis of a relatively extensive investigation and research and necessary scientific experiments, summarizing and absorbing the practical experience and scientific research results since the founding of the People's Republic of China, and collecting relevant standards and technical information at home and abroad. This specification is divided into ten chapters and four appendices. The main contents are: general principles, underground engineering waterproofing design, waterproof concrete, additional waterproof layer, grouting waterproofing, structural waterproofing of special construction methods, tunnels, tunnel drainage, detailed structure, engineering inspection and completion acceptance. In the process of implementing this specification, please pay attention to accumulating information and summarizing experience. If you find that there is a need for modification and supplementation, please send your opinions and relevant information to the Third Research Institute of the Engineering Corps of the General Staff for reference in future revisions. Office of the State Civil Air Defense Committee
September 23, 1987
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Chapter 1 General
Chapter 2
Waterproof Design of Underground Engineering
Section 1
Section 2
Section 3
Chapter 3
Section 1
Section 2www.bzxz.net
Section 3
Section 4
Chapter 4
Section 1
Section 2
Section 3
Section 4
Section 5
Chapter 5
Section 2
Section 3||t t||General provisions
Electricity and electricity
Waterproofing level of underground projects
Waterproofing scheme for underground projects
Waterproof concrete
General provisions
Quality inspection…
Additional waterproof layer
General provisions
Cement mortar waterproof layer
Rolled waterproof layer
Paint waterproof layer·
Metal waterproof layer·
Grouting waterproofing
General provisions
Grouting materials·
Grouting design
Section 4
Grouting construction·
Chapter 6
Section 1
Section 2
Structural waterproofing using special construction methods
Shield Lining
Section 3
Section 4
Underground continuous wall
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Section 5
Anchor spraying support
Section 6
High-pressure jet female curtain·
Chapter 7
Section 1
Section 2
Section 3
Section 4
Chapter 8
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Chapter 9| |tt||Chapter 10
Appendix 2
Appendix 3
Appendix 4
Drainage of tunnels and pits
General provisions
Wall-mounted lining
Off-wall lining
Detailed structure
Through-the-wall pipe (box)
Embedded parts
Pits and pools:
Engineering inspection and final acceptance
Explanation of terms
+060000000
Treatment of water leakage in existing underground projects
Labor protection
Explanation of terms used in this specification
Additional explanation
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Chapter I General Provisions
Article 1.0.1 This specification is specially formulated to ensure that the design and construction of underground engineering waterproofing meet the requirements of advanced technology, economic rationality, safety and applicability, and quality assurance. Article 1.0.2 This specification applies to the design, construction and acceptance of waterproofing of industrial and civil underground buildings, protective projects and tunnels and other underground projects. Article 1.0.3 The design and construction of underground engineering waterproofing must be carried out with engineering hydrogeological surveys, and follow the principle of "combining prevention, drainage, interception and blocking, taking measures according to local conditions, and comprehensive management".
Article 1.0.4 For underground engineering waterproofing, new materials, new structures and new technologies that have been tested and identified and proven effective in practice should be actively adopted. Article 1.0.5 In addition to complying with the provisions of this specification, the design and construction of underground engineering waterproofing should also comply with the provisions of other relevant national current standards and specifications. Engineering Construction Standard Full Text Information System
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Chapter 2 Waterproof Design of Underground Engineering
Section 1 General Provisions
Article 2.1.1 The waterproof design of underground engineering should be accurate in classification, reliable in measures, appropriate in material selection, and economically reasonable.
Article 2.1.2 The underground engineering of the city should be reasonably laid out and the engineering elevation should be determined according to the overall plan and drainage system. Article 2.1.3 The waterproof design of underground engineering should take into account the effects of surface water, groundwater, upper stagnant water, capillary water, etc., as well as the influence of nearby hydrogeological changes caused by human factors, and reasonably determine the engineering waterproof elevation. Article 2.1.4 The waterproofing of underground engineering should adopt a waterproof concrete self-waterproofing structure, and an additional waterproof layer or other waterproofing measures can be provided as needed. Article 2.1.5 Special parts such as expansion joints, construction joints, wall pipes (boxes), embedded parts, reserved holes, etc. should be strengthened. Article 2.1.6 Underground pipe trenches, floor drains, entrances and exits, window wells, etc. should have anti-flooding measures, and drainage ditches in cold areas should have anti-freezing measures. Article 2.1.7. Before waterproof design, the following relevant information should be collected according to the characteristics of the project: 1. The elevation of the highest groundwater level, the age of its appearance, the actual water level elevation in recent years and its seasonal changes; 2. Groundwater type, recharge source, water quality, flow, flow direction, permeability coefficient and pressure; 3. Engineering geological structure, rock formation trend, inclination, joints and fissures, characteristics and distribution of water-bearing and impermeable formations, conditions of caves, sinkholes, filling areas and soft soil layers; 4. Temperature changes over the years, precipitation, evaporation and ground freezing depth; 5. Regional topography, landforms, natural water flows, reservoirs, ditches, abandoned pits and wells, as well as surface water, floods and water supply and drainage system information; Engineering 2 Construction Standard Full-text Information System
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6. Earthquake, geothermal and harmful substances such as gas in the area where the project is located; 7. Construction technology level and material sources. Section 2 Waterproofing Grade of Underground Projects
Article 2.2.1 The waterproofing grade of underground projects shall be divided into four grades according to the amount of water leakage allowed in the enclosure structure, and each grade shall comply with the provisions of Table 2.2.1. Waterproofing Grade of Underground Projects
Waterproofing Grade
Water seepage is not allowed, and there is no wet stain in the enclosure structure
Water seepage is not allowed, and there is a small amount of wet stain in the enclosure structure, which is occasionally seenTable 2.2.1
There are a small amount of water leakage points, and there shall be no linear flow and leakage of silt, and the water leakage per day and night is <0.5L/m2There are water leakage points, and there shall be no linear flow and leakage of silt, and the water leakage per day and night is <2L/m2Article 2.2.2 The waterproofing grade of underground projects shall be determined according to the importance of the project and the requirements for waterproofing during use, and can be selected according to Table 2.2.2. Waterproofing level of various underground projects
Waterproofing level
Hospitals, restaurants, hotels, theaters, shopping malls, cold storage, grain storage, vaults, archives, communication projects, computer rooms, power station control rooms, power distribution rooms, production workshops with high waterproofing requirements
Command projects, weapons and ammunition depots, personnel shelters with high waterproofing requirements Railway hotel platforms, luggage rooms, subway stations, urban pedestrian tunnels General production workshops, air-conditioning rooms, generator rooms, fuel depots General personnel shelter projects
Electrified railway tunnels, railway tunnels in cold areas, subway operation interval tunnels, urban highway tunnels, water pump rooms
Cable tunnels
Underwater tunnels, non-electrified railway tunnels, general highway tunnels Water intake tunnels, sewage discharge tunnels
Civil air defense evacuation trunk roads
Note: 1. The waterproofing level of underground projects can be divided into services according to projects or components 2. For projects with high moisture-proofing requirements, in addition to the first-level waterproofing level, corresponding moisture-proof measures should also be taken. Engineering Construction Standard Full Text Information System
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Section 3 Waterproofing Scheme for Underground Engineering
Article 2.3.1 The waterproofing scheme for underground engineering shall be reasonably determined based on the use requirements, taking into account the terrain, landform, hydrogeology, engineering geology, earthquake intensity, freezing depth, environmental conditions, structural form, construction technology and material sources. Article 2.3.2 For projects that are located in saturated soil or rock layers without gravity drainage conditions, the following waterproofing schemes may be adopted: 1. Waterproof concrete self-waterproofing structure or steel, cast iron pipes or pipe segments; 2. Set up additional waterproofing layers, adopt grouting or other waterproofing measures. Article 2.3.3 For projects that are located in unsaturated soil or rock layers without gravity drainage conditions, the following waterproofing schemes may be adopted: 1. Waterproof concrete self-waterproofing structure, ordinary concrete structure or masonry structure; 2. Set up additional waterproofing layers or adopt grouting or other waterproofing measures. Article 2.3.4 For projects with gravity drainage conditions, the following waterproofing schemes may be adopted:
Waterproof concrete self-waterproof structure, ordinary concrete structure, masonry structure or anchor spray support;
2. Set up additional waterproof layer, bushing, grouting or other waterproofing measures. Article 2.3.5 For projects in corrosive media, waterproofing schemes such as erosion-resistant waterproof mortar, concrete, roll material or coating should be adopted. Article 2.3.6 For projects subject to vibration, waterproofing schemes such as flexible waterproof roll material or coating should be adopted.
Article 2.3.7 For projects in frozen soil, when concrete structure is used, the concrete anti-freeze-thaw cycle shall not be less than 100 times. Article 2.3.8 For projects with gravity drainage conditions, gravity drainage system shall be set up. For projects without gravity drainage conditions, with water leakage or requiring emergency drainage, mechanical drainage system shall be set up.
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Chapter 3 Waterproof Concrete
General Provisions
Section 1
Article 3.1.1 The anti-seepage capacity of waterproof concrete shall not be less than 0.6MPa. The anti-seepage grade of waterproof concrete shall be selected according to the ratio of the design wall thickness of waterproof concrete and the maximum water head of groundwater in accordance with the provisions of Table 3.1.1. Table of waterproof concrete anti-seepage grade
Ratio of maximum water head (H) to waterproof concrete wall thickness (h) (H/h)
Design anti-seepage grade (MPa)
Article 3.1.2 The ambient temperature of waterproof concrete shall not be higher than 100℃; the erosion resistance coefficient of waterproof concrete in corrosive media shall not be less than 0.8. Article 3.1.3 The compressive strength grade of the concrete cushion layer of the waterproof concrete structure shall not be less than 10MPa, and the thickness shall not be less than 100mm. Article 3.1.4 The waterproof concrete structure shall comply with the following provisions: 1. The lining thickness shall not be less than 200mm;
2. The crack width shall not be greater than 0.2mm;
3. The thickness of the steel bar protective layer on the water-facing surface shall not be less than 35mm. When directly in the corrosive medium, the thickness of the protective layer shall not be less than 50mm. Section 2 Raw Materials
Article 3.2.1 The cement used in waterproof concrete shall comply with the following provisions: Engineering Construction Standard Full Text Information System
W5Article 3 For projects without gravity drainage and located in unsaturated soil or rock layers, the following waterproofing schemes may be adopted: 1. Waterproof concrete self-waterproofing structure, ordinary concrete structure or masonry structure; 2. Set up additional waterproof layer or adopt grouting or other waterproofing measures. Article 2.3.4 For projects with gravity drainage conditions, the following waterproofing schemes may be adopted:
Waterproof concrete self-waterproofing structure, ordinary concrete structure, masonry structure or anchor spraying support;
2. Set up additional waterproof layer, lining, adopt grouting or other waterproofing measures. Article 2.3.5 For projects in corrosive media, waterproofing schemes such as erosion-resistant waterproof mortar, concrete, coiled materials or coatings shall be adopted. Article 2.3.6 For projects subject to vibration, waterproofing schemes such as flexible waterproof coiled materials or coatings shall be adopted.
Article 2.3.7 For projects in frozen soil layers, when concrete structures are used, the concrete anti-freeze-thaw cycle shall not be less than 100 times. Article 2.3.8 For projects with gravity drainage conditions, a gravity drainage system shall be installed. For projects without gravity drainage conditions, with water leakage or requiring emergency drainage, a mechanical drainage system shall be installed.
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Chapter 3 Waterproof Concrete
General Provisions
Section 1
Article 3.1.1 The impermeability of waterproof concrete shall not be less than 0.6MPa. The impermeability grade of waterproof concrete shall be selected according to the ratio of the design wall thickness of waterproof concrete and the maximum head of groundwater in accordance with the provisions of Table 3.1.1. Table of waterproof concrete seepage resistance grade
Ratio of maximum water head (H) to waterproof concrete wall thickness (h) (H/h)
Designed seepage resistance grade (MPa)
Article 3.1.2 The ambient temperature of waterproof concrete shall not be higher than 100℃; the erosion resistance coefficient of waterproof concrete in corrosive medium shall not be less than 0.8. Article 3.1.3 The compressive strength grade of the concrete cushion layer of waterproof concrete structure shall not be less than 10MPa, and the thickness shall not be less than 100mm. Article 3.1.4 Waterproof concrete structure shall comply with the following provisions: 1. The lining thickness shall not be less than 200mm;
2. The crack width shall not be greater than 0.2mm;
3. The thickness of the steel bar protective layer on the water-facing surface shall not be less than 35mm. When directly in the corrosive medium, the thickness of the protective layer shall not be less than 50mm. Section 2 Raw Materials
Article 3.2.1 Cement used in waterproof concrete shall comply with the following provisions: Engineering Construction Standard Full Text Information System
W5Article 3 For projects without gravity drainage and located in unsaturated soil or rock layers, the following waterproofing schemes may be adopted: 1. Waterproof concrete self-waterproofing structure, ordinary concrete structure or masonry structure; 2. Set up additional waterproof layer or adopt grouting or other waterproofing measures. Article 2.3.4 For projects with gravity drainage conditions, the following waterproofing schemes may be adopted:
Waterproof concrete self-waterproofing structure, ordinary concrete structure, masonry structure or anchor spraying support;
2. Set up additional waterproof layer, lining, adopt grouting or other waterproofing measures. Article 2.3.5 For projects in corrosive media, waterproofing schemes such as erosion-resistant waterproof mortar, concrete, coiled materials or coatings shall be adopted. Article 2.3.6 For projects subject to vibration, waterproofing schemes such as flexible waterproof coiled materials or coatings shall be adopted.
Article 2.3.7 For projects in frozen soil layers, when concrete structures are used, the concrete anti-freeze-thaw cycle shall not be less than 100 times. Article 2.3.8 For projects with gravity drainage conditions, a gravity drainage system shall be installed. For projects without gravity drainage conditions, with water leakage or requiring emergency drainage, a mechanical drainage system shall be installed.
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Chapter 3 Waterproof Concrete
General Provisions
Section 1
Article 3.1.1 The impermeability of waterproof concrete shall not be less than 0.6MPa. The impermeability grade of waterproof concrete shall be selected according to the ratio of the design wall thickness of waterproof concrete and the maximum head of groundwater in accordance with the provisions of Table 3.1.1. Table of waterproof concrete seepage resistance grade
Ratio of maximum water head (H) to waterproof concrete wall thickness (h) (H/h)
Designed seepage resistance grade (MPa)
Article 3.1.2 The ambient temperature of waterproof concrete shall not be higher than 100℃; the erosion resistance coefficient of waterproof concrete in corrosive medium shall not be less than 0.8. Article 3.1.3 The compressive strength grade of the concrete cushion layer of waterproof concrete structure shall not be less than 10MPa, and the thickness shall not be less than 100mm. Article 3.1.4 Waterproof concrete structure shall comply with the following provisions: 1. The lining thickness shall not be less than 200mm;
2. The crack width shall not be greater than 0.2mm;
3. The thickness of the steel bar protective layer on the water-facing surface shall not be less than 35mm. When directly in the corrosive medium, the thickness of the protective layer shall not be less than 50mm. Section 2 Raw Materials
Article 3.2.1 Cement used in waterproof concrete shall comply with the following provisions: Engineering Construction Standard Full Text Information System
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