Quarry N 3 in the area of well bush N 398 of East Surgut field - General Plan

Contents

Introduction

1 General Information

1.1 Administrative provision

1.2 Climatic characteristics of the work area

1.3 Hydrographic characteristics of the work area

1.4 Engineering and geological structure of sand deposit

1.5 Size distribution of useful thickness

1.6 Inventory Count

2 Organization of works

2.1 Soil washing schedule

2.2 Logistical resources

2.3 Land diversion and limits of mining diversion

3 Process of works execution. Main Design Solutions

3.1 Preparatory works

3.1.1 Power supply of the facility

3.1.2 Access road arrangement

3.1.3 Watch camp site

3.1.4 Arrangement of storage site

3.1.5 Installation of spillway system

3.1.6 Installation of pulp pipes

3.2 Quarry Development Technology

3.2.1 Method and scheme of soil picking

4 Environmental protection

4.1 Protection of surface and groundwater from pollution

5 Safety precautions

5.1 Safety requirements during excavation by hydromechanization method

5.2 Mechanization of earthworks

5.2.1 Bulldozers

5.2.2 Vehicles

5.3 Fire Safety Requirements

5.3.1 Excavation works

5.4 Distribution of duties and procedure of action of persons involved in elimination of dredging accidents

5.4.1 Responsible Emergency Response Manager (foreman, foreman)

5.4.2 Chief Engineer and Deputy General Director

5.4.3 Main Power and Main Mechanic

5.4.4 Chief of Dispatch Service

5.4.5 Head of Production Service Base, Transport Section and Fleet

5.4.6 Central Dispatch Manager

5.5 General Safety Requirements

5.6 Organization of administrative and domestic premises

5.7 Career Security Organization

5.8 Rules of Operation of Fuel and Lubricants Warehouse, Mobile Filling Stations

5.8.1 Arrangement of the territory of the fuel and lubricants warehouse

5.8.2 Equipment

5.8.3 Lighting

5.8.4 Vehicle refuelling

5.8.5 Requirements for the use of collective and individual protective equipment

5.9 Arrangement of the territory

5.9.1 Transport Safety

5.10 Safety Rules for Operation of Electrical Installations

List of literature

APPLICATIONS

Appendix 1 Accident Management Plan

Attachment 2 Attached Drawings

Appendix 3 Sheet for familiarization of employees of the complex team and ITR of the facility with the PDP

Introduction

The basis for the development of the work project is the technical project "Hydromechanized quarry No. 3 in the area of ​ ​ the well bush No. 398. East Surgut field. "

Design works were performed by SurgutNIPIneft in December 2009.

The need to develop a sand quarry on the territory of the West Kamynskoye deposit is associated with the need for sand for the own needs of OJSC Surgutneftegaz.

The objective of the project is to develop the technology for conducting work in the quarry using a hydromechanized method to a depth of 17.1 m using an electric dredger No. 14 of the "18060" brand, equipped with an ejector device, with a ground pump of the GrUT type 2650/75 with a water capacity of 2650m3/h, a drive capacity of 630kW, and a design soil capacity of 390.0 m3/h.

The total area of ​ ​ the quarry accepted for development is 9.66 ha. The area to be developed in 2011 is 3.03 hectares.

The project of work execution provides for washing of soil into a pit from a quarry with a total volume of "business soil" V = 350 000m3 in the 2011 season.

Allusion Contractor - CJSC "MTA Company."

Customer - OOO Surgutneftespetsstroy.

1 General Information

1.1 Administrative provision

The projected territory of the quarry is located in the Surgut district of the Khanty-Mansiysk Autonomous Okrug - Ugra of the Tyumen region on the East Surgut oil field.

1.2 Climatic characteristics of the work area

The climatic characteristic of the construction area was adopted at the nearest weather station Surgut.

The climate of the territory under consideration is influenced by a number of factors, the main of which are the western transfer of air masses, the influence of the Euro-Asian continent, openness to the north and access to the polar masses of air coming from there.

The climate of the region is continental. A characteristic feature is the rapid change of cyclones and anticyclones. Under these conditions, there is a long cold winter, strong winds and snowstorms, short, relatively warm summers, late spring and early autumn frosts. Transitional seasons are very short, with sharp fluctuations in temperature. The territory of the district is characterized by insufficient heat supply. Total solar radiation averages 350 kJ/cm2.

The average annual air temperature is minus 3.1 ° C. The coldest month of the year is January, the average monthly temperature of which is minus 22.0 ° C. The highest temperature drop (absolute minimum) is minus 55 ° С. The warmest month of the year is July, the average monthly temperature of which is plus 16.9 ° C. Absolute maximum air temperature in July plus 34 С.

A characteristic feature of the temperature regime of the territory is a short frost-free period (98 days a year). The number of days with stable frosts is about 150 days a year. A steady transition of the average daily temperature through 0C is noted at the end of April - May, the number of days with an average daily temperature above 0 ° C is 150-180. Frosts are possible in all summer months.

According to hydrologoclimatic zoning, the territory under consideration belongs to the zone of excessive humidification. Atmospheric humidification of the area is due to the western transfer of air masses of Atlantic origin. About 676 mm of precipitation falls per year, mainly in warm time (July August) - 467 mm, least of all in February. By type of precipitation, more than half of the annual amount falls in the form of rain (mainly from April to October), almost 30% in the form of snow. Relative humidity during the year is up to 80%. Number of days with precipitation 175-189.

The area under consideration is characterized by a long winter period with stable snow cover. The duration of the period with snow cover is 190-210 days per year. The time of snow fall is close to the date of temperature transition through 0 ° С. The first snow cover appears in the first decade, and a stable one forms on average in the third decade of October. The maximum height of the snow cover is 75 cm. The destruction of the snow cover begins in mid-April and ends in early May. Snow density in this territory is on average 0.20-0.22 g/cm3. By the beginning of snowmelt, the water supply in the snow cover reaches the largest values ​ ​ - 120-140 mm. Snowstorms in this area are associated with the passage of southwestern and northwestern cyclones .

1.3 Hydrographic characteristics of the work area

The Ob River flows through the territory of the East Surgut field with its numerous tributaries. This area is also characterized by a large number of nameless oval-shaped lakes. The exploration site is located at a distance of about 8.0 km from the Ob River.

In the nutrition of water bodies, meltwater and summer autumn rain floods are of primary importance. The low slope of the water surface, high salinity, wetland and lake area of ​ ​ the basin contributes to the slowdown of surface runoff. The spring rise in water level begins in the first decade of May.

The highest levels of spring flood occur 2028 days after the beginning of the rise. The peak of the flood is stretched due to the arrival of the accumulated part of the drain. The water level rise intensity is 2025 cm per day, and the decline intensity is 3-5 cm per day. The duration of the flood is 2-3 months with its end in late July - early August. The decline in spring flood levels ends with the onset of summer low water, often interrupted by the passage of summer rain floods.

Minimum levels of summer and autumn are also minimum annual. Winter low water is usually established in mid-October. The most low-water period is February-March. The end of the winter low water falls on mid-April - the first decade of May. The winter low water is 190,200 days. The beginning of icebreaking falls on the first decade of October. The thickness of the ice sheet reaches 0.7 m.

Autopsy of rivers is observed in mid-May. The average duration of ice drift is 5-7 days. No ice drift is observed on the floodplain.

1.4 Engineering and geological structure of sand deposit

The sand deposit is located in the area of ​ ​ well bush 398 on the territory of the East Surgut oil field. The distance from the field to the nearest settlement - Surgut is about 5.5 km.

The main forest landscape complexes of the territory adjacent to the survey site are represented by cedar, cedar-base green-roofed forests and pine-roofed green-roofed forests.

The dominant landscape directly on the site of engineering surveys is an oligotrophic type swamp.

Also, in the vicinity of this territory, transitional ridge-shaped and mochazhin swamps are developed in areas of intensive transit runoff with transitional peatlands.

The opening is represented by peat of the Igo, II and III types, an average capacity of 1, 50 m, sandy sandy layers with an average capacity of 0, 61m. The volume of opening is: peat - 145,500 m3, soup - 59,082 m3.

The useful thickness is represented by fine sand, an average thickness of 13.83 m, sandy sandy layers of fluid, an average thickness of 1.16 m. The total reserves of the useful thickness are 1454559 m3, including sand-1 341,686 m3, soups-112 873 m3.

The average level of groundwater in the quarry is 0.10 m below the surface of the earth.

Within the scope of the pit accepted for development, the distribution of soils will be:

- peat - 8.77%,

- fine sand - 80.87%,

- fluid soup - 10.36%.

Due to the exclusion of the part of the area of ​ ​ the exquisite deposit on which cedar grows, the area of ​ ​ the quarry accepted for development will decrease by 0.04 hectares and will be equal to 9.66 hectares .

Considering the development of the useful thickness of the quarry together with the opening, which is 8.77% of the height of the face, as well as the presence of fluid sandy sandy layers in the useful thickness (10.36%), with a total power of interlayers and opening equal to 19.13% of the height of the face (more than 10%), the soil of the quarry due to the difficulty of development by land shells, in accordance with HESN2001, are assigned to Group II.

The downtime of the dredger due to the clogging of the quarry at the technical design stage was accepted as 11.47%, according to the SUMR1 data of the Surgutneftespetsstroy trust for 2003.

As a source of water supply to the dredger during the development of the design quarry, the quarrying of previous years with water reserves of 5600.00 thousand m3 was determined.

The area of ​ ​ the explored field is 9.70 ha. The area of ​ ​ the quarry accepted for development is 9.66 ha.

The layout of the wells, the power of engineering-geological layers and their distribution along the section are presented in the engineering-geological certificate of the quarry.

Preparatory work

During the preparatory period perform the following types of works:

According to the act from the marketing service of MTA Company CJSC, the quarry angles and development units, storage site, shift camp, construction site, technological trail and other structures fixed on the ground according to the general plan;

Set sedimentary grades for determination of pile settlement;

Prepare storage site;

Ensure safe work on site.

Before the start of mining operations, install fencing signs along the contour of the permissible approach of the land shell and floating pulp pipeline to cables, pipelines and other structures in the development zone. The presence of unauthorized persons in the field without a pass is strictly prohibited.

For the passage of auxiliary equipment along the perimeter of the storage site, a technological strip should be provided - a technological passage 6 m wide, necessary for maintaining drainage facilities in good condition.

3.1.1 Power supply of the facility

Power supply to the dredger in the quarry and shift village is carried out from the designed VL6kV. Connected capacity 1.2 MW.

Power supply shall be provided via KShVG 3x50mm2 cable laid along the cable rack, and above the water via pontoons on which the floating pulp pipe is installed.

3.1.2 Access road arrangement

To organize the movement of technological transport from the construction site to the allusion map, an access road is provided.

Filling of the roadbed is not provided, since the territory is not swampy and is not flooded.

The construction of road clothing, strengthening of slopes and shoulders is not provided.

3.1.3 Watch camp site

The site for the placement of a shift village, a capacitive park, a construction site measuring 40x60m is located in the east of the developed quarry.

Perform filling and arrangement of the shift camp.

On the site of the shift village there are residential wagons, a sanitary wagon, a wagon-head, and a warehouse .

Service, production and household buildings and structures consist of block containers located in a separate group of buildings. All buildings and structures are provided of a mobile type, are a rectangular frame structure lined on the outside with sheet steel, on the inside with DF 2 plywood. The floors of the buildings are linoleum on an insulated basis according to the flooring made of wooden chopped boards, the windows and doors are wooden. The wagon-houses are equipped with changing rooms for changing working clothes, a washbasin, places for heating and rest of workers, provided with sanitary and hygienic treatment.

In the area of ​ ​ the shift village, a toilet of its own manufacture is installed, which is a wooden structure installed on a sewage tank with a volume of 10m3 buried in the ground. As faecal and household water accumulates, the sewage tank should be cleaned with the help of a sizing machine. Discharge water from sanitary wagon to sewage tank via metal pipe laid underground, L = 10 m, diameter 159x5 mm.

For solid household waste, two containers are installed, as they are filled, garbage is collected to specially provided places (landfills).

Due to the fact that the site of work is located in the immediate vicinity of the shift village, the delivery of workers to and from the resting place is not provided.

All administrative and household premises have plenum ventilation, which ensures the content of harmful impurities in the air of these premises within the limits of current standards.

Heating of administrative and household premises is carried out by electric heaters.

Air temperature indoors has to be in limits not less plus 20 wasps.

To provide workers with drinking water, it is provided to install a tank with a volume of 3m3 in the shift village, the supply of water to which is carried out during the shift and delivery of equipment. The use of water from local sources is not allowed.

Fire protection panels with primary fire extinguishing equipment are installed on the site of the shift camp.

For communication with the base, the FT840 radio station is provided in the work area. Get in touch regularly according to the procedure established at the enterprise. During the communication session, report progress data and mandatory all emergency situations and incidents. Communication with the dispatcher on duty outside the scheduled time is mandatory in case of an emergency.

Medical services for workers should be provided in the nearby village of Ugut, the delivery of workers to which should be provided by water. Medical first aid kits shall be provided at each work area (workplace).

There is a tank farm at the site, consisting of 10 fuel and lubricants tanks (50 m3) for refueling diesel power plants and construction equipment.

The site for fuel and lubricants storage is packed with a double earthen shaft with a height of 1.0 m along the perimeter with a device of a hydraulic insulating layer. These measures are provided for cases of fuel overflow in case of an accident or leak. Fuel and lubricants storage tanks are equipped with transfer pumps and overflow pallets.

Parking of vehicles, warehousing of materials and pipes for the period of construction is provided on the territory of the construction site on a site specially designated for these purposes.

3.1.4 Arrangement of storage site

To lay the design soil volume V = 350 000m3, a storage site with maximum plan sizes of 200.0x180.0m is arranged (see Sheet 1 "General Construction Plan M 1:2000).

Fill the sand into a stack with forced formation of slopes 1:2 to a height of 11.1 m (see Table 8).

3.1.5 Installation of spillway system

To prevent spillage of waste water beyond the limits of the flushing map and to ensure collection of filtration water, a filtration trench and a spillway filtration ditch with a fixed bottom slope of 0.002% are arranged along the perimeter of the stack in the direction of the quarry.

Length: a) filtration trench - 856 m;

b) spillway filtration ditch - 320m;

Filtration trench and spillway filtration ditch are made 5m wide, of variable cross-section, to the depth providing removal of filtration water (see sheet 1 "General Construction Plan M 1:2000").

For the technological removal of waste water from the washing map to the worked-out part of the pit, spillway devices are provided: a spillway well and a spillway pipe. Spillway pit, diameter 720x8 mm, build up as it is washed. Close the shandor windows of the spillway well as you wash. The spillway collector with a diameter of 530x8 mm is laid at a height of 1 m from the ground surface. The soil developed during the installation of filtration trenches should be laid in the dam of the primary dam, which prevents the pulp from spreading outside the dam map.

3.1.6 Installation of pulp pipes

The soil developed in the quarry should be transported to the place of laying in the form of slurry through pulp pipes:

a) Floating pulp pipe consisting of 530x8mm pipes laid on paired pontoons. To pass through the floating pipe, make flooring, and between the links - transition ladders. The flooring is made of boards. Along the flooring is a timber fence.

b) The main pulp pipe is welded from steel thick-walled pipes with a diameter of 530x8mm. The General Construction Plan shall provide for the construction of a section of the main pulp pipeline route with a length of L = 1135 m.

c) Dilution (alluvial) pulp pipe consists of links made of steel thick-walled pipes with a diameter of 530x8mm, bell pipe connection, length of dilution pulp pipe Lmax = 360 m.

Piping shall be laid and installed in accordance with SNiP3.02.0187, GOST R 12.3.0482002, PB 0349802.

When laying pressure head slurry pipelines to execute radiuses of turn not less than 3÷6 of diameters of pipes. At turns with angle more than 30 °, attach pulp pipes and water ducts. All pressure pulp pipes shall be tested with maximum working pressure. Correctness of laying and reliability of pipelines operation shall be executed by an act drawn up based on the results of their operation within 24 hours of working time .

At rotation angles up to 15 °, welding of pipelines with an oblique joint (without taps) is allowed. Replace the steep rotation (for example, at an angle of 90 °) with less steep (two turns of 45 ° or three turns of 30 °) with straight inserts with a length of at least 10 pipeline diameters.

The pipes are assembled in the section by a pipe laying (crane) equipped with annular slings, which are dressed on the hook with a "blow-down," the pipes fall on the welding bench. Before welding in the section, clean the internal and external surfaces of pipes from soil, snow and dirt, clean the edges and adjacent internal and external surfaces to shine.

To avoid displacement and rupture of pipes due to hydraulic impacts and centrifugal forces of water flow, attach them with axial (in rectilinear sections) and angular (in turns) anchors. Structurally, corner anchors are usually wooden (or metal) braces resting on a pipe, and shields embedded in the ground, or 2? 4 piles clogged into the ground, fastened with wire twists. Turn smoothly, with reinforced welding of joints.