Course project "Transport to the face"

Contents

INTRODUCTION

1 GENERAL PART

1.1 Initial data

1.2 Summary of coal deposit development

1.2.1 Mine field opening system

1.2.2 Mining field preparation method for excavation

1.2.3 Reservoir Development System

1.2.4 Operating mode of the enterprise

1.2.5 Selection of type of mechanized complexes

1.3 Preparation of initial data for determination of characteristics of cargo flows coming from treatment face

1.3.1 Coal density in the core

1.3.2 Machine time factor

1.3.3 Resistance of coal to cutting

1.3.4 Definition of replaceable load of treatment faces

1.3.5 Determination of number of cycles of combine N per shift

1.3.6 Preparation of the initial data table

1.3.7 Calculation diagram for determination of cargo flows

1.4 Determination of characteristics of cargo flows from treatment faces

1.4.1 Average minute load flow during the time of coal receipt from the treatment face No. 3 and No.

1.4.2 Maximum minute load flow which may come from the face of the face No. 3 and No.

1.4.3 At reverse stroke of extraction machine (grinding)

1.5 Conveyor Type Selection

1.5.1 Selection of conveyor by acceptance capacity

1.5.2 Setting the allowable conveyor length

1.5.3 Maximum total cargo flow during arrival of cargo (addition of random values)

1.5.4 Conveyor selection by acceptance capacity (for section 2-5)

1.5.5 Setting Allowable Conveyor Length

1.6 Belt conveyor traction calculation by belt tension diagrams (most loaded)

1.7 Use of hoppers in conveyor lines

1.8 Calculation of diesel rolling back

1.8.1 Selection of loading station equipment

1.8.2 Selection of transport equipment near the barrel yard

1.9 Selection of auxiliary transport facilities for transportation of equipment, materials and people by precinct workings

1.9.1 Delivery of materials and equipment during installation and removal of the alloy

1.9.2 Delivery of Materials and Equipment to Preparatory Bottoms

1.9.3 Transportation of people

1.10 Calculation of economic indicator

1.10.1 Payroll calculation

1.10.2 Calculation of depreciation charges

1.10.3 Calculation of energy costs

1.10.4 Material and Spare Part Cost Calculation

1.11 Safe operation of vehicles

1.11.1 General Information

1.11.2 MPD Service Point

1.11.3 Maintenance and operation of MPD

1.11.4 Locomotive operation

1.11.5 Transportation of people

1.11.6 Safety measures during operation of monorail road and locomotive

1.11.7 Rolling stock driving regulations

LIST OF LITERATURE

2 SPECIAL PART

Introduction

Transportation is an integral part of mining technology. The future mining engineer has a great responsibility for the decisions made in the field of technology and mine transport, in particular, contributing to the efficient and safe operation of the mining enterprise and ensuring the technological progress of the industry.

In view of the above, the aim is to teach students the scientific methods of development of solid mineral deposits, that is, economically justified extraction with the minimum cost of living and living labor with unconditional safety and comfort of mining operations.

The goal is achieved by: a deep and comprehensive synthesis of the long experience of existing enterprises; technical and economic analysis of statistical dependencies, engineering, analytical and variant solutions; studying the patterns of physical processes occurring in the thickness of minerals and containing rocks during mining operations; illumination of issues of labor protection, safety rules, protection of subsoil and the environment surrounding the person; freeing workers from heavy physical labor in underground conditions, on the basis of integrated mechanization and automation of production processes, using excavation technology without the constant presence of workers in the face; the use of knowledge gained in the study of related, especially economic disciplines.

This course project helps to deepen and consolidate the knowledge gained, as well as acquire the skills to make independent decisions, make the calculations necessary for this.

The decisions made in the course project are based on progressive technology with a high concentration of mining and the use of new equipment.

1.5.1 Selection of conveyor by receiving capacity

As per [1, Table 7.9] or as per Table 5, Appendix 2 we find the parameters of the belt conveyor (taking into account the place of installation: stationary or semi-stationary), which would provide the condition, i.e. the receiving capacity of the conveyor should be more than the maximum minute load flow.

Acceptance capacity satisfying the condition m3/min,

that at γ = 0.85 t/m3 corresponds to t/min, the following conveyor parameters are provided:

B = 800 mm - tape width, Vl -2 m/s - tape speed.

In accordance with the accepted parameters and based on the operating conditions, semi-stationary telescopic belt conveyors shall be installed on the grooves (1-2 and 3-4). As per [2, Table 1, Appendix 3], the 2LT80U02 conveyor is previously received. The second type is used to install the conveyor over the entire length of the stroke (1500 m).

1.11 Safe operation of vehicles

1.11.1 General Information

The suspended monorail IPD24F is installed in horizontal and inclined mine workings with an inclination angle of ± 25 degrees, with a horizontal rotation radius of 4 meters, vertical ~ 8 meters in mines of any category, as well as on the surface of industrial platforms.

Suspended monorail road is designed for delivery of various equipment, materials and transportation of people in mining workings by means of special trolleys.

The suspended monorail MPD24F is equipped in workings with a fresh stream of air. Ventilation of workings is carried out due to general depression. As a traction means, a mine suspended diesel-hydraulic locomotive DLZ110F is used, with a traction force of 80 kN. The route is made of I-section 155 (14OE DIN), which is attached to the roof by means of special suspension devices.

Monorail road has underground complex of structures and includes:

• Locomotive depot with necessary facilities for repair and

maintenance.

• Filling station with capacity of not more than 2000 liters.

• Locomotive parking garage.

• Loading and unloading areas.

• Monorail track laid along mine workings.

1.11.2 MPD Service Point

1. Garage. Workshop. Fuel and lubricants warehouse. Diesel locomotive refueling

Diesel locomotive service points are located in a mine secured by a non-combustible support.

- garage, for parking of diesel vehicle;

- repair shop;

- fuel and lubricants warehouse and filling station.

At the entrance to the diesel locomotive service point, metal doors are installed, which are locked. The soil of the garage and repair shop is leveled and poured with cement mortar for convenience of cleaning. At the service point of the diesel locomotive there is fire fighting equipment (5 fire extinguishers, a box with inert dust (sand) - 0.5 m3, a fire hose with a length of at least 20 m with a fire barrel, 2 shovels, scrap, 2 buckets). The garage is equipped with telephone communication and fire alarm with the output of information to the duty officer on the mine.

Metal boxes with tight covers are installed to store wiped materials and drained lubricants. In the garage there should be: a locksmith with a set of tools, spare parts and materials, two 5acs with water (for pouring into the engine cooling system and exhaust gas neutralization system), tanks for draining spent oils.

The fuel and lubricants warehouse is designed to store up to 2,000 liters of diesel fuel in a tank car. A drainage groove is arranged in the depot to collect spilled diesel fuel. The soil of the warehouse is concreted taking into account the flow of diesel fuel from the walls of the warehouse towards the drainage well. Drain from the drain groove is carried out to the drain well located outside the diesel depot, where spilled fuel and lubricants and water are collected. As the drain pit is filled, water is pumped out. The capacity of the well is 3.5 m3.

GSM garage-workshop-warehouse is illuminated by RVL-2 explosion-proof lighting fixtures

At the service point of the diesel locomotive there is fire fighting equipment:

• 5 powder fire extinguishers,

• box with inert dust (sand) - 0.5 m3,

• fire hose not less than 20 m long with fire barrel,

• 2 shovels,

• scrap,

• 2 buckets.

The garage is equipped with:

• The garage is equipped with telephone and automatic equipment

gas monitoring, as well as automatic alarm of

fire with signal to the shaft dispatcher All this

must be at the entrance from the side of the fresh jet in special buckets.

2. Locomotive refueling

Diesel truck filling is performed at the service point. Tanks for transporting diesel fuel of factory manufacture on a wheel run for rail rolling with a gauge of 900 mm. From the diesel fuel tank, the liquid is pumped by a manual pump equipped with a counter, the pump hoses at the ends have threaded connections that ensure proper tightness. For the delivery of motor and hydraulic oil, a special tank for each type of oil is used. Oil is also pumped by a special manually operated pump.

3. Safety measures for handling combustible liquids.

The soil of the mine should have an even, easy to clean surface, be stable against the destructive effect of GW.

Used wiping materials, as well as materials used in cleaning of spilled LG, shall be stored in closed metal boxes and issued daily from the mine. The quantity of wiping materials at the storage point shall not exceed 20 kg.

Diesel engines temporarily decommissioned should be in the garage with emptied fuel tanks

It is allowed to equip the garage with a special explosion-proof device for the first start of a cold diesel engine after prolonged parking. Before starting such an engine in the garage, the atmosphere must be checked for explosive gases.

Spilled combustible liquid shall be removed with sand or other non-combustible materials.

The soil of the mine should have an even, easy to clean surface, be stable against the destructive effect of GW.

During fuelling the engine of the refuelling machine must be switched off.

Do not:

• lowering of fuel and lubricants into the mine and their transportation

• to the place of filling, people who are not familiar with the rules for handling combustible liquid in underground conditions;

• Delivery of LG to the mine in containers not suitable for this purpose;

• drain GW, on soil and working walls. At the place where the GW is spilled and at a distance of 10 m from it, all work must be stopped before the GW is fully collected and removed.

• Store diesel fuel not used in the mine.

1.11.3 Maintenance and operation of MPD

Maintenance personnel shall be qualified and familiarized with the Road Operation Manual and this project.

Duties of maintenance personnel during operation:

Every shift

1. Before commencing work, the path and all devices shall be monitored:

• road suspensions, road anchorage, anchorage connections, freight trolleys, connecting rods, arrows and their operability checked;

• brake trolleys, overhead locomotive, train for the transport of people;

• serviceability of communication and signalling facilities,

• Road passability.

The results of the inspection should be entered in the "Workbook" and reported to the senior supervisory officer.

All found problems must be resolved before the work begins.

2. Monitor the weight of cargo placed on freight trolleys. Mass transported cargo shall correspond to maximum weight of brake trolley used and track inclination.

3. Transportation of people is carried out in special cabins, according to the number of seats.

4. The material to be transported must be securely fixed and not protrude beyond the dimensions of the freight trolley.

5. The speed of trains of monorail diesel roads should not be more than 2 m/s. Transportation of large-sized equipment is carried out at a reduced speed, with constant observation of the accompanying person.

6. The weight of the large equipment shall not exceed the maximum load on the track. After delivery of large equipment, it is necessary to inspect all parts of the suspension road that have been loaded.

Once a week, the road operator monitors:

- workbench, where suspension road is laid;

- suspension road route, suspension condition;

- connections of beams, arrows, train for transportation of people;

- integrity of connecting rods.

Once a week lubricate the connecting link of the rod, trunnions of the transfer mechanism of the arrow.

Once a week brake trolleys shall be tested for operability according to the operating manual Test results shall be recorded in the "Book of inspection and testing of brake trolleys."

7. Arrow status monitoring:

Every day it is checked:

• serviceability of the arrow; condition of suspended clamps, tensions, bolted connections, mobile mechanism.

Do not:

• repair individual parts of the road or lubricate its mechanical parts during operation;

• put the road into operation in case of malfunctions of the monorail track, rolling stock;

• operate the monorail in the workings with the faulty support used for suspension of the monorail, if there are no required gaps in the section of the workings.

Installation of the road is carried out in strict accordance with the road operation manual specially prepared by the workers.

Prior to installation, the workings involved in the transport scheme shall be inspected and, if necessary, attached or repaired.

In the workings where the suspended monorail is mounted, numbered pickets are installed after 20 m, the axis of the monorail route is broken.

8. In the workings fixed with anchor support, for suspension of the road, an additional attachment is installed every 2 m, consisting of two A20VSH 20mm anchors with a length of 2.2m and two AP-33 ampoules

9. Two drifters are engaged in drilling of shots and fastening of anchors And 2OB. Holes are drilled using ERP - 18D manual electric drill or "Wombat" ("Rambor") pneumatic drilling machine, SBU.

10. In workings with a height of more than 2 m, work on attaching the anchor suspension is carried out from the working safety shelf (see the sheet "Typical passport for installing the safety shelf in the workings."

11 The road path is mounted from separate sections. Straight sections use straight sections, horizontal and vertical sections for curved route sections. Straight sections are connected by horizontal and vertical transition sections or sections of the house with locks. Joint of sections is hinged or flanged. Coupling elements and suspension devices of the monorail track must be factory-made and correspond to the type of workholding.

12. Before connecting the sections, the sections are raised to the roof manually and

suspended on temporary chain suspensions, aligned along axis and height.

After that, one end of the beam is connected to the previously installed beam and

is suspended from permanent suspension. Subsequent suspension of beams

is produced in a similar sequence.

13. Sections of the monorail track, as they are installed, are suspended from the support or roof of mine workings by means of trailed devices using a suspension of the anchor track (in the case of a suspension of the path to the roof). Hangers use 20x80 circuits and special bolts.

14. Longitudinal and transverse attachment of the route is carried out using cross bracing of chains 14x50/V. Such fasteners are installed through 30 m - in horizontal workings and through 15 m - in inclined workings.

15. Arrows are mounted at the branch points of the path. Attachment to the support is carried out by a simple suspension with 20x80 circuits, setting of the arrow to horizontal position is carried out by tension screws. The arrow connects to the path sections through the transition horizontal section.

16. The composition consists of load-carrying trolleys, which are connected to each other by connecting rods. People's cabins or containers for the transport of materials and equipment are suspended on the earrings of freight trolleys.

17. To avoid accidental fall of vehicles from the suspension road, an end stop is mounted.