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This standard is developed in accordance with the rules given in GB/T 1.1-2009 Directives for standardization—Part 1: Structure and drafting of standards.
This standard replaces the parts related to metallurgic and chemical limestone and cement-materials in DZ/T 0213-2002 Specifications for metallurgic, chemical limestone and dolomite, cement-materials mineral exploration. The following main technical changes have been made with respect to DZ/T 0213-2002:
——The contents about dolomite are deleted;
——The pre-exploration stage is canceled, and the connotation of each exploration stage is modified according to GB/T 17766-2020 Classifications for mineral resources and mineral reserves (see Clause 4);
——Some contents of technical conditions for mining deposits are modified (see 4.1.5, 4.2.5 and 4.3.5);
——The requirements for exploration depth are added (see 5.2.2);
——The requirements for the proportion of resources to be identified during the detailed exploration and advanced exploration stages are added (see 5.3.2, 5.3.3 and Annex D);
——The clause “green exploration requirements” is added (see Clause 6);
——Some subclauses in the “exploration work and quality requirements” are modified (see Clause 7);
——The requirements of “feasibility evaluation” are modified (see Clause 8);
——The specific conditions for the resources and reserves type are added (see Clause 9);
——The requirements for resources and reserves estimation are modified (see Clause 10);
——The commercial type of deposit, classification of structural characteristics of limestone, and classification of deposit size are added (see Annex A);
——The exploration types and engineering spacing of cement ingredient deposit are added (see Annex C);
——The Annex A is modified, and the "classifications for mineral resources and mineral reserves" is modified to "types of resources and reserves and their conversion relation" (see Annex F);
——The general requirements for chemical composition of some ores are modified and added (see Annex G).
This standard was proposed by the Ministry of Natural Resources of the People's Republic of China.
This standard is under the jurisdiction of National Technical Committee on Natural Resources and Territory Spatial Planning of Standardization Administration of China (SAC/TC 93).
The previous edition of this standard is as follows:
——DZ/T 0213-2002.
Specifications for mineral exploration
—Limestone and cement ingredients
1 Scope
This standard specifies the requirements in terms of the purpose and stage of mineral geological exploration, degree of exploration research, degree of exploration control, green exploration, exploration work and its quality, feasibility evaluation, resource reserve type conditions, resource reserve estimation, etc. of limestone and cement ingredients1).
This standard is applicable to geological exploration, resource reserve estimation and achievement evaluation of limestone and cement ingredient minerals in various stages.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 6566 Limits of radionuclides in building materials
GB 6722 Safety regulations for blasting
GB/T 12719 Exploration specification of hydrogeology and engineering geology in mining areas
GB/T 13908 General requirements for solid mineral exploration
GB/T 17766 Classifications for mineral resources and mineral reserves
GB 18306 Seismic ground motion parameters zonation map of China
GB/T 18341 Specifications of survey for geological and mineral resources exploration
GB/T 25283 Specification for comprehensive exploration and evaluation of mineral resources
GB/T 33444 Specification for exploration of solid mineral resources
GB 50295 Code for design of cement plant
DZ/T 0033 Specifications for compilation of geological reports on mineral exploration
DZ/T 0078 Procedures for original geological record of solid mineral exploration
DZ/T 0079 Technical requirements of integrated compilation and study on geological data about solid mineral exploration
DZ/T 0130 (All parts) The specification of testing quality management for geological laboratories
DZ/T 0227 Geological core drilling regulations
DZ/T 0276 (All parts) Regulation for testing the physical and mechanical properties of rock
DZ/T 0336 Specifications for scoping study of mineral exploration
DZ/T 0338 (All parts) Regulations of mineral resources estimation
DZ/T 0339 Requirements for study of deposit industrial criteria
DZ/T 0340 Requirements for mineral processing test degree in mineral exploration
3 Purpose and stage of exploration
3.1 Purpose
The purpose is to find and evaluate the deposits (bodies) that can be further explored or exploited, provide relevant geological information for exploration or development decisions, and finally provide necessary geological data for mine construction design, so as to reduce the investment risk of deposit exploration and development and obtain reasonable economic benefits.
3.2 Classification of exploration stages and the objectives and tasks of each stage
3.2.1 Classification of exploration stages
According to GB/T 17766 and GB/T 13908, the exploration work of limestone and cement ingredient minerals can be classified into three stages: general exploration, detailed exploration and advanced exploration, which shall be carried out step by step. When merging or submitting exploration results across stages, it should also be implemented step by step with reference to the requirements of exploration stages.
3.2.2 General exploration stage
On the basis of regional geological survey and research, search for, inspect and trace ore bearing geological bodies and find ore bodies through effective exploration means (geological mapping, trenching, shallow well or shallow drilling, drilling); preliminarily identify the geological characteristics of ore bodies (beds) and ore processing technical performance; preliminarily understand the mining technical conditions through sparse sampling engineering control and testing, experimental research; and conduct a rough study in order to estimate and infer the amount of resources, and evaluate whether it is necessary to transfer to detailed exploration, and propose the scope for detailed exploration.
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3.2.3 Detailed exploration stage
On the basis of general exploration, conduct systematic engineering control, testing and experimental research on the ore body through effective exploration means to basically identify the geological characteristics of the deposit (body), the technical performance of ore processing and the technical conditions for mining, so as to provide a geological basis for the division of mining areas and the determination of exploration areas; conduct a general study in order to estimate the amount of controlled resources and inferred resources, and evaluate whether it is necessary to transfer to exploration, and propose the scope of exploration; pre-feasibility study or feasibility study may also be carried out to estimate credible reserves.
3.2.4 Advanced exploration stage
On the basis of detailed exploration, and through effective exploration means, the ore body shall be subject to infilling engineering control and test as well as in-depth test and study in order to identify the geological characteristics of the ore body, the technical performance of ore processing and the mining technical conditions in detail, so as to provide the necessary geological data for the mine construction design to determine the mine production size, mining method, and the general layout of the mine; conduct a general study in order to estimate the inferred, controlled and proved resources; pre-feasibility study or feasibility study may also be carried out to estimate credible reserves and proved reserves.
4 Exploration research degree
4.1 General exploration stage
4.1.1 Geology of exploration area
4.1.1.1 Collect regional geological data as comprehensively and timely as possible, especially the data related to geological, mineral, geophysical, remote sensing, prospecting engineering and sampling test (test), and exploration and mining data of the same mineral mines, latest research results, etc., and make use of them on the basis of full research.
4.1.1.2 Through geological mapping (generally simple mapping) with a scale of 1:10000 or 1:5000, using outcrop inspection, and with the help of existing engineering exposure, preliminarily identify the spatial distribution of ore bed, large folds, fault and joint fissure development sections, the number, type and distribution of magmatic rock and metamorphic rock, and study the impact of topography on the exploration area boundary and mining slope.
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4.1.2 Ore body characteristics
4.1.2.1 As required, a simple geological survey or a preliminary survey of the deposit with a scale of 1:2000 to 1:1000 shall be carried out to preliminarily identify the number, shape, size, occurrence, thickness and overall distribution range of the ore body (bed), and preliminarily identify the number, type, distribution and main chemical composition of the dunn bass.
4.1.2.2 Where there are multiple layers of dolomite or dolomitic limestone in the limestone bed for cement, it should be circled by geological mapping.
4.1.2.3 Have a general understanding of the types and main chemical compositions of the surrounding rocks of the ore body, preliminarily identify the distribution, types and thickness of the overburden of the ore body, and preliminarily identify the morphological characteristics, size and distribution range of limestone karst.
4.1.3 Ore characteristics
By comparing the sampling identification (rock ore identification), testing and analysis of the sparse project with the known deposits with similar geological characteristics, the ore type, mineral composition, chemical composition, grade and distribution; the grain size of clay raw materials and siliceous raw materials, the plasticity of clay raw materials; and the depth and distribution range of the ore body weathering zone are all preliminarily identified. The commercial type of deposit, classification of structural characteristics of limestone, and classification of deposit size are shown in Annex A.
4.1.4 Test requirements for ore processing technology
Generally, the comparison study of ore processing technology is carried out to preliminarily identify the processing technical performance of ore.
4.1.5 Technical conditions of exploitation
4.1.5.1 Collect and analyze regional hydrogeology, engineering geology and environmental geology data, and traffic, power supply and other construction conditions data, and preliminarily identify the hydrogeology, engineering geology and environmental geology conditions of limestone exploration area.
4.1.5.2 When selecting limestone exploration area for cement, it is generally required that the mine is located within 20 km to 50 km of railway (highway) or navigable river and seaport wharf, and the energy required for production must be guaranteed. There shall be industrial sites suitable for building factories near the mines, and they shall be far away from cities, scenic spots, historical sites and large residential areas. There must be clay and siliceous raw material mines for cement nearby (within 20 km to 50 km), which must be implemented at the same time as limestone mines.
4.1.6 Comprehensive exploration and evaluation
The occurrence characteristics of symbiotic minerals and the possibility of comprehensive utilization shall be preliminarily identified. The requirements specified in GB/T 25283 apply.
Foreword i
1 Scope
2 Normative references
3 Purpose and stage of exploration
3.1 Purpose
3.2 Classification of exploration stages and the objectives and tasks of each stage
4 Exploration research degree
4.1 General exploration stage
4.2 Detailed exploration stage
4.3 Advanced exploration stage
5 Exploration control degree
5.1 Determination of exploration type
5.2 Determination of exploration engineering spacing
5.3 Control degree of deposit
6 Green exploration requirements
6.1 Basic requirements
6.2 Exploration design
6.3 Exploration and construction
6.4 Environmental restoration, treatment and acceptance
7 Exploration work and quality requirements
7.1 Exploration and measurement
7.2 Geological mapping
7.3 Hydrogeological, engineering geological and environmental conditions
7.4 Geophysical prospecting work
7.5 Exploration engineering
7.6 Sample collection, processing and test
7.7 Rock and ore physical properties test
7.8 Original geological record, comprehensive data arrangement and report preparation
8 Feasibility evaluation
8.1 Basic requirements
8.2 Geological study
8.3 Pre-feasibility study
8.4 Feasibility study
9 Resources and reserves type conditions
9.1 Resources
9.2 Reserves
10 Resources and reserves estimation
10.1 Industrial index
10.2 Basic requirements for resources estimation
10.3 Basic requirements for reserves estimation
10.4 Determination of resources and reserves type
10.5 Estimation results of resources and reserves
Annex A (Informative) Commercial types of deposits, classification of structural characteristics of limestone, and classification of deposit size
Annex B (Informative) Exploration types and engineering spacing of limestone deposits
Annex C (Informative) Exploration types and engineering spacing of cement ingredient deposit
Annex D (Informative) The amount and proportion of resources explored at each deposit exploration stage
Annex E (Informative) Chemical analysis items and allowable limit coefficient of relative deviation of inspection and analysis
Annex F (Informative) Types of resources and reserves and their conversion relation
Annex G (Informative) General industrial indexes
Bibliography
