1 General Provisions
1.0.1 This code is formulated with a view to promote technical progress and innovation, increase design qualities and ensure safe production and reasonable development and utilization of resources.
1.0.2 This code is applicable to mining design of construction, extension and renovation project of metal mine.
1.0.3 The laws and regulations on safety production, occupational health and environmental protection shall be implemented in mine design. The engineering design of safety facilities, environmental protection, conservation of water and soil and land rehabilitation shall be conducted simultaneously with the main part of the project.
1.0.4 Not only the requirements stipulated in this code, but also those in the current relevant regulations, standards and compulsory provisions of engineering construction standards of the nation shall be complied with during mine design.
2 Terms
2.0.1
mining geology
mining geology is the generic term of work including exploration and research as well as reserves management of the ore deposit in order to ensure the successful proceeding of production, to guarantee reasonable development and utilization of mineral resources and to prolong the mine service years during mine production
mining geology is also the general term of work including establishing deposit geologic model and raising requirements on capital construction exploration and productive exploration and meeting the demands of mining design in order to ensure the successful proceeding of production and reasonable development and utilization of mineral resources during mining production
2.0.2
cut-off grade
cut-off grade is the minimum requirement on useful composition contents in mono ore sample or mono engineering ore sample when the orebody is delineated in calculation of resources/reserves, it is the limit for ore and rock, and it is also called margin grade
2.0.3
construction exploration
exploration for capital construction (prospecting of construction) is the exploration prepared for three-level ore reserves (developed reserves, prepared reserves and blocked-out reserves) or two-level ore reserves (developed reserves and prepared reserves) as required by mine commissioning and it is based on early developed ore block determined by the mine design during capital construction of mine
2.0.4
water inrush
water inrush means the phenomenon of a large amount of underground water suddenly flooding into the mine shaft and drift when the roadway exposes the aquifer, water-diversion breakage, cave and seeper aged area during tunneling or mining
2.0.5
mineral deposit dewatering
water draining of mineral deposit is the process of reducing the water level or pressure of aquifer by artificial drainage method in order to drain part of or all the underground water in a certain mining level (stage) and to make the water head of confined aquifer in ore bed floor lower than the safety water head
2.0.6
rock mass
rock mass is the native geological body with structural surface
2.0.7
shearing strength
the shearing strength is the ultimate shearing stress on the shearing surface when the rock (body) is sheared along the shearing stress direction under the action of normal stress
2.0.8
structural plane
the structure plane is the facet-discontinuousgeological interface of various sizes and with relative lower mechanical strength in rockbody; it is also called structural surface
2.0.9
open-pit limit
the pit limit is the boundary of the mineable space delineated by bottom and side of the open pit
2.0.10
mining by stages
mining by stages means mining the open pit in certain sequences according to the different zones divided by mining depth or scope during mining
2.0.11
steep slope mining
steep slope mining is the generic term of stope elements, technical measures and stripping procedures used for steepening the side slope angle (over 18°) of open pit stripping
2.0.12
surface development
surface development is the generic term of establishing haulage corridor for ore and rock from earth surface to the excavating working surface
2.0.13
safety berm
the safety berm is the berm provided on the side slope to intercept the rolling stones
2.0.14
cleaning berm
the cleaning berm is the berm provided on the side slope to intercept the rolling stones and meet the requirement of cleaning the rolling stones
2.0.15
haulage berm
the haulage berm is the berm provided on the side slop for transportation equipment to pass
2.0.16
trench
the cut is the transportation corridor from the earth surface to the excavating surface and working surface
2.0.17
minimum working bench width
the minimum working bench width is required by normal production in order to facilitate the drilling, blasting, excavating and transportation equipment to operate
2.0.18
chamber blasting
the chamber blasting is the method of concentrated charging in the special roadway or chamber for blasting
2.0.19
horizon
horizons (level) are some ore blocks of the underground mine divided according to the selected ore level height along vertical direction of orebody, and it is also called level
2.0.20
block
Block means the ore block of the deposit divided by heading and open yard etc.in order to facilitate stoping
2.0.21
mine development
mine development means tunneling a series of shaft sinking and drifting from earth surface to the ore body, in order to form an integrated system of elevating. transportation, ventilation, drainage, water supply, power supply and compressed air systems etc
2.0.22
development
development means the mining preparation conducted for creating conditions in the ore block for passengers, ventilation, materials-transportation, rock-drilling and ore drawing etc. and obtaining the prepared reserves by tunneling a series of roadway to divide the level into ore blocks based on accomplishment of development engineering
2.0.23
cutting
cutting means mining preparation conducted for creating conditions for ore breaking down and ore removal on the stope face and for obtaining blocked-out ore reserve in the ore block where development has been accomplished
2.0.24
under cutting
under cutting means the bottom space formed by expanding the stope drift wall to the boundary of ore block, it is also called under cutting layer
2.0.25
open-stope mining method
open-stope mining method (open stoping) means a kind of mining method for maintaining stabilization of goaf mainly based on self stability of wall rock or supporting capacity of a few amount of ore pillars during the course of stopping
2.0.26
caving mining method
caving mining method means a kind of mining method of forcefully or naturally caving rock covering the orebody top and the gob area filled by wall rock of top and bottom bed plate along with the proceeding of stopping in order to control the earth pressure of the stope and treat the goaf
2.0.27
cut and fill method
cut and fill method is a kind of mining method using filling materials to fill the goaf in order to control the stope ground pressure along with the working face being advanced to a certain distance
Foreword I
1 General Provisions
2 Terms
3 Basic Requirements
4 Mining Geology
4.1 General Requirements
4.2 Industrial Index of Mineral Deposit
4.3 Sampling Design for Ore Beneficiation Test
4.4 Resources/Reserves Assessment and Ore Quality Research
4.5 Constructive Prospecting and Productive Prospecting
5 Mining Water Control
5.1 General Requirements
5.2 Calculation of Water Inflow in Open-pit Mine
5.3 Calculation of Water Inflow in Underground Mine
5.4 Waterproof and Drainage of Open-pit Mine
5.5 Waterproof and Drainage of Underground Mine
5.6 Water Control in Mine Surface
5.7 Water Control in Underground Mine
5.8 Mineral Deposit Dewatering
5.9 Anti-seepage Grouting Curtain
6 Rock Mechanics
6.1 General Requirements
6.2 Slope of Open-pit Mine
6.3 Rock Mechanics Design of Underground Mine
7 Open-Pit Mining
7.1 Determination of Open-Pit Limit
7.2 Elements of Open-Pit
7.3 Loss and Dilution of Ores
7.4 Development and Haulage of the Open-pit Mine
7.5 Production Capacity and Production Schedule of Open-pit Mine
7.6 Drilling, Blasting and Loading
7.7 Open-pit Mine Chamber Blasting
7.8 Open-pit Mine Waste Dump
7.9 Transition from Open-pit Mine to Underground Mine
8 Underground Mining
8.1 General Requirements
8.2 Determination of Mining Production Capacity
8.3 Development of Mineral Deposit
8.4 Mining Method
8.5 Mining Equipment
8.6 Construction and Mining Scheduling
8.7 Underground Haulage
8.8 Ventilation and Dust-proof
8.9 Filling Materials Preparation Station and Filling Materials Transportation
9 Mining Machinery
9.1 Vertical Shaft Hoisting
9.2 Inclined Shaft Hoisting
9.3 Compressed Air Facilities
9.4 Drainage Facilities
9.5 Shaft Antifreeze
9.6 Underground Water Supply
9.7 Belt Conveyer and Spreader
9.8 Mine Crushing
10 Shaft Sinking and Drifting
10.1 General Requirements
10.2 Vertical Shaft
10.3 Inclined Shaft
10.4 Drift and Adit
10.5 Draw Shaft and Chute Slipway
10.6 Main Chamber
11 Mining Safety and Environmental Protection
11.1 Mining Safety Technology and Industrial Hygiene
11.2 Mining Environmental Protection
Appendix A Type of Mine Scale and Mine Life
Appendix B Empirical Value of Surface Runoff Coefficient
Appendix C Reference Value of Design Frequency Rain Permeability Coefficient in Subsidence Area
Appendix D Index for Ore Loss and Dilution
Appendix E Table of the Main Excavating Equipment in Underground Mine
Appendix F Relationships Among Horizontal Transportation Quantity, Electric Locomotive Adhesive Weight, Mining Truck Volume, Gauge, Track Type
Appendix G Standard of Underground Water Supply Quality
Explanation of Wording in This Code
