Development of a project for the construction of an extended part of a vertical shaft

St. Petersburg Mining University
Department of Construction of Mining Enterprises and Underground Structures
Course project on the discipline "Technology of construction of mining enterprises, part 1"
On the subject: Development of a project for the construction of an extended part of a vertical shaft
St. Petersburg 2023

Source data:
Methane gas category: 0
Water inflow: 5 m3/h
Shaft diameter in sinking: 6.5 m
Technological scheme of shaft sinking: combined
Bedrock Strength Factor: 5
Depth: 850 m
Annotation:
In the course project, a technology is developed for the construction of an extended part of a vertical shaft with a diameter of 6.5 m according to a combined scheme. The penetration rate is 108 m/month. Stope movement per cycle of 2.7 m.
The following sections are considered: selection of a set of tunneling equipment, parameters of drilling and blasting operations, ventilation of the shaft, parameters of loading and transportation of rock mass, construction of a permanent support.
A schedule for the organization of work has been drawn up and the main technical and economic indicators (TEP) have been calculated. The course project consists of 41 pages, 16 tables, 14 drawings and an A1 drawing.
Content:
1. Shaft sinking flow diagram ................................................................................................ 6
2. Equipment Selection ................................................................................................. 7
2.1. Tunneling Pile Driver Selection ................................................................. 7
2.2. Loader Selection ................................................................................................................. 8
2.3. Drilling Rig Selection ................................................................................................................. 9
2.4. Selecting a tunneling flange ................................................................................................................ 10
3. Calculation of drilling and blasting parameters ................................................................................................ 11
3.1. Selection of explosives and means of detonation .................................................................................... 11
3.2. Determination of Average Hole Depth .................................................................................................... 12
3.2. Determination of explosives flow rate ................................................................................................................ 12
3.4. Determination of the number of holes in the face................................................................................. 13
3.5. Creating a Hole Layout ................................................................................................. 14
3.6. Distribution of explosives by boreholes .................................................... 15
3.7. Calculation of the electric blast network .................................................... 16
3.8. Determination of the duration of drilling and blasting operations .................................................................. 18
3.9. Calculation of drilling and blasting indicators ................................................................................................. 19
4. Calculation of ventilation during shaft sinking .................................................................................................... 21
4.1. Selecting the Type and Diameter of the Pipeline .................................... 21
4.2. Calculation of the amount of air supplied to the face.................................................... 21
4.2.1. Amount of air for ventilation of the shaft after blasting. 21
4.2.2. Amount of air required to ensure the minimum velocity of the air stream ................................................................ 22
4.2.3. Amount of air required to ventilate the largest number of people in the face ................................................................. 23
4.3. Calculation of Fan Unit Flow and Depression .................................................... 23
5. Loading of rock during shaft sinking ................................................................................................. 24
5.1. Calculation of Rock Loading Capacity and Duration ................................................ 24
5
5.2. Calculation and Selection of Lifting Plant Parameters ................................................................................. 25
6. Erection of a permanent support during shaft sinking ................................................................................. 30
6.1. Determination of the thickness of monolithic concrete support .................................................................................... 31
6.2. Determining the Time of Concreting ................................................................................................ 32
6.3. Choosing a Concrete Pipeline Suspension Scheme .................................................................................................... 33
6.4. Choosing the type of formwork ................................................. 34
7. Ancillary Processes and Equipment ................................................................................................. 37
7.1. Dewatering from the trunk face.................................................................... 37
7.2. Lighting Provision .................................................................................................................... 37
7.3. Communication and Signalling .................................................................................................... 38
7.4. Choosing a Rescue Ladder ................................................. 38
7.5. Selection of tunneling winches .................................................... 39
8. Organization of work during shaft sinking .................................................................................................... 39
REFERENCES.................................................................................... 41