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Abstract

Content

1. Theme urgency

Process coal mining occurs in the presence of a number of adverse factors: high temperature of the mine atmosphere, dust, etc.

High temperature at the bottom of the mine occurs because heat from the mountain range transported coal and working mechanisms. Mining operations at great depths is associated with increased heat from rocks in underground workings.

2. Research goals and objectives

Goals and objectives of my master’s work is to establish deficiencies in implementation of safety standards, the development of measures to normalize the thermal conditions in mine, the analysis of thermal conditions in the underground workings of the mine behalf of Skochinskiy.

3. Brief information about the mine

Mine behalf of Skochinskiy commissioned in 1975 with a design capacity of 1.8 million tons. In the mine field, opening seven vertical shafts 944–1293 m depth, developed a single unprotected particularly prone to sudden outbursts of coal and gas reservoir h16 Smolyaninovsky a capacity of 1.2–2.2 m angle 8–10°. Preparation of a mine field panel, solid development system or combined with conveyor drifts vysheotrabotannyh lavas as ventilation.

Stopes are processed by the system lava drift direct course. Industrial stocks 1.01.2011 up 75,164,000 tons, including debugging layers 42,326,000 tons.

The production capacity of the mine 1.01.2011 – 500 thousand tons/year. Currently, the mine has 3 lava in the center panel (2nd western lava UPTSP, 2nd eastern lava UPTSP) and 1 lava on the western panel (5th western lava RFP) [1].

Transport coal within the central panel of faces to skip shaft fully pipelined: by district workings belt conveyors with belt width of 800 mm (1L-80); by the main conveyor drifts conveyors 1L-80, 1L-80UK, 1L-800 with belt width of 800 mm; by field conveyor incline conveyors 1L-80 – belt width of 800 mm and 2L-100U – belt width 1000 mm.

Transport coal in the west panel conveyor. 5 west lava RFP by conveyor drift conveyor drift and group CP-80 conveyors with belt width of 800 mm, a pass on the conveyor 5 western lava CP-1000 conveyor belt width 1000 mm. From the hopper panel western coal is loaded into trains sectional PS-3,5, and electric locomotives 2AM-8D on field haulage drift. 1200 meters is delivered to the discharge hopper central panel from which bypassed in loading the skip shaft and further skip shaft skips in the 25 tons capacity granted to the surface.

4. Investigation of the thermal regime mine behalf of Skochinskiy

Purpose mine thermal surveys – to obtain reliable baseline data to perform the air temperature forecast and calculation holodopotrebnosti third eastern UP CPU lava formation h16 and the development of proposals for normalizing temperature conditions by means of cooling air.

Mine thermal shooting carried out in accordance with applicable regulations – safety in coal mines [2] and guidance on conducting surveys in thermal coal mines [3].

When shooting in dead heat development workings points measurements of thermal and air parameters located:

In workings where the temperature exceeds the allowable values safety rules, according to data provided by the mine, working 827 miners [4].

5. Measures to normalize the thermal conditions in lava

According to the results of thermal calculations is recommended to use artificial cooling air through the use of complex mine refrigeration equipment with water cooling chiller MHRV-1 or with the help of mobile refrigeration, air-conditioned KPSH 300.

Refrigerating machine MHRV-1

Watercooled chillers MHRV-1 (Fig. 1) 1000 kW cooling capacity is designed to provide an ice water mine air conditioning systems in deep mines, hazardous gas, dust and sudden outbursts.

Machine may have application in other industries where there is a need for a water ice as the source of cold.

Figure 1 – Machine refrigeration MHRV-1

Figure 1 – Machine refrigeration MHRV-1

Mobile air conditioning KPSH 300

Mobile Air Conditioning KPSH 300 (Fig. 2) creates favorable conditions for miners working in deep mine workings, hazardous gas and dust.

Conditioner can be used in other industries and technological systems, comfortable air conditioning.

Mobile Air Conditioning KPSH 300 explosion-proof electrical and can be used in coal mines hazardous gas, dust and sudden outbursts.

Air comes in the form of two blocks: the condensing unit and air handling, Chladone systems are connected on-site air conditioning flexible hoses.

Put together blocks on frames and capable of being installed on the frame trolleys type VG for the 900 mm gauge to move them during the operation. KPSH 300 automated air conditioning and has all kinds of necessary protections.

Figure 2 – Mobile air conditioning KPSH 300

Figure 2 – Mobile air conditioning KPSH 300

Conclusions and suggestions

Improving temperature conditions mines by mining and technical measures to reduce the temperature does not allow air to permissible limits.

Improving temperature conditions in all planned to further working out mining is only possible when artificial cooling air using refrigeration, air-conditioned KPSH 300.

To reduce the temperature of fresh air is necessary to create a compact high-performance models of air conditioners for the normalization of microclimate deep mines.

References

  1. Комплекс меропиятий по борьбе с высокими температурами воздуха в горных выработках на 2011 год ОП шахта им. А. А. Скочинского, ГП ДУЭК.
  2. Правила безопасности в угольных шахтах. – М.: Недра, 1986, – С. 293.
  3. Руководство по проведению тепловых съемок в угольных шахтах. Макеевка-Донбасс, МакНИИ, 1982.
  4. Комплекс мероприятий по борьбе с высокими температурами воздуха в горных выработках на 2011 год ОП Шахта им. А. А. Скочинского ГП ДУЭК.
  5. ТУ У29.2-00217863-040-2004. Машина холодильная МХРВ-1. Технические условия.
  6. ТУ У29.2-00217863-040-2004. Кондиционер передвижной шахтный КПШ 300. Технические условия.