A quarry layout method taking into account switch station layout

Abstract

The present invention provides a method for arranging a quarry that takes into account the layout of a switch station. The quarry is arranged within a reservoir layout area and is characterized in that: a wide quarry road is provided at an elevation above the water level in the quarry. The width of the wide road matches the width required for arranging switches. The road is used to arrange the switch station after the quarry is mined. The switch station leads the line through a cable hole. A cable hole is provided in the mountain of the quarry. The cable hole and the switch station are on a plane, intersecting vertically or at a large angle close to vertical, which facilitates the layout of the cable. The present invention reserves a wide road at an elevation above the water level that is convenient for arranging connecting roads, and arranges the switch station, thereby solving the problem of difficult site selection for the switch station when constructing a pumped storage power station in a mountainous canyon area. At the same time, the combined arrangement of the two can save a large amount of costs such as excavation, slope support, drainage interception, roads, land acquisition and resettlement, greatly saving project investment, saving land resources, and reducing damage to the ecological environment.

Description

Technical Field

[0001] The invention relates to a stone quarry taking into consideration the layout of a switch station, and is suitable for the design and construction of large and medium-sized pumped storage power station projects. Background Art

[0002] A pumped-storage power station is divided into an upper reservoir area and a lower reservoir area. The lower reservoir area typically houses the underground power generation system, lower reservoir dam, switch station, quarry, and other structures. The quarry serves as a source of fill material for the lower reservoir dam and, after excavation, expands the reservoir's capacity. It is typically located within the reservoir area close to the dam. After quarrying, the land is typically reforested and not used for other purposes. The switch station is typically located separately, covering an area of ​​approximately 7,000 to 8,000 square meters. A separate road leading to the outgoing line yard is also required.

[0003] From the practical effect point of view, the above arrangement has the following problems:

[0004] (1) Pumped storage power stations are usually built in mountainous and canyon areas. They require many buildings and complex layouts. The terrain is often steep, making it difficult to select a site for the switch station.

[0005] (2) The layout of the switch station requires a large area of ​​flat land. In addition, the area required for slope excavation, drainage facilities, connecting roads, etc. must be considered, which consumes a large amount of land resources.

[0006] (3) The switch station is arranged separately, which requires a lot of slope excavation, support, drainage, road construction, etc. The civil engineering cost is high, usually more than 50 million. At the same time, a large amount of land acquisition and resettlement costs may also be incurred.

[0007] (4) The switch station is arranged separately, and a large amount of slope excavation and waste disposal will also cause damage to the ecological environment.

[0008] (5) After the quarry is mined, it is reforested and not used for other purposes, which is a huge waste of resources. Summary of the Invention

[0009] The purpose of the present invention is to provide a quarry that takes into account the layout of the switch station in order to address the shortcomings of the existing conventional switch station layout, thereby greatly saving land resources, saving project investment, and protecting the ecological environment.

[0010] The above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0011] A method for arranging a quarry that takes into account the arrangement of a switch station, wherein the quarry is arranged within a reservoir arrangement area, and is characterized in that: in order to save land and project investment, the excavation shape of the quarry is optimized, and a wide horseway is provided in the quarry at an elevation above the water level line, which is convenient for arranging a road connecting the switch station. The width of the wide horseway matches the width required for arranging switches, and the horseway is used to arrange the switch station after the quarry is mined; the switch station leads the line through an outlet hole, and an outlet hole is provided in the mountain of the quarry. The outlet hole and the switch station are on a plane, intersecting vertically or at a large angle close to vertically, so as to facilitate the arrangement of the outlet lines.

[0012] The reservoir is the lower reservoir of a pumped storage power station.

[0013] During the planning and design of the switch station, the plane layout of the switch station was optimized and arranged into a narrow and long shape to reduce the demand for site width and facilitate the optimization of the excavation shape of the quarry.

[0014] While the quarry is excavating, the upper slope support of the switch station is completed simultaneously and promptly to ensure the safety of the switch station's civil construction and equipment installation.

[0015] The cable outlet tunnel should be constructed from the inside out first, and rock plugs should be reserved near the quarry. After the excavation and support of the upper slope of the switch station is completed, construction can be carried out from the outside in.

[0016] The quarry layout method provided by the present invention takes into account the layout of the switch station. A wide horse road is reserved above the water storage level at an elevation that is convenient for arranging the connecting road, and the switch station is arranged, which solves the problem of difficult site selection for the switch station when constructing a pumped storage power station in a mountainous canyon area. At the same time, the combination of the two can save a lot of costs such as excavation, slope support, drainage, roads, land acquisition and resettlement, greatly saving project investment, saving land resources, and reducing damage to the ecological environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a quarry that takes into account the layout of a switch station provided by the present invention.

[0018] Figure 2 for Figure 1 AA cross-sectional view. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] As shown in the figure, the quarry layout method of the present invention taking into account the layout of the switch station optimizes the quarry mining shape 1, sets a wide horse road and arranges the switch station 2 at an elevation higher than the water level line 5 to facilitate the layout of the switch station connecting road 4.

[0021] The switch station 2 is designed to be as narrow and long as possible, reducing the required site width and facilitating the optimization of the quarry excavation. The cable outlet tunnel 3 intersects the switch station 2 vertically (or at a large angle) on the plane, facilitating cable routing.

[0022] During the excavation construction at Quarry 1, slope support was completed in a timely manner to ensure the safety of the switch station civil construction, equipment installation and other construction.

[0023] The outlet tunnel 3 should be constructed from the inside out first, and rock plugs should be reserved near the quarry. After the excavation and support of the upper slope of the switch station is completed, construction can be carried out from the outside in.

[0024] The quarry layout method taking into account the layout of the switch station of the present invention is implemented in the following specific steps:

[0025] a. Optimize the layout of switch station 2 and make it long and narrow. The outgoing line yard, GIS building, assembly room, relay protection building, duty room and other buildings are arranged linearly, reducing the width of the switch station site to within 40 meters.

[0026] b. Optimize the layout of the quarry 1. While maintaining the overall excavation slope gradient, appropriately steepen the graded slopes 6 above or below the switch station, where the geological conditions are favorable. Also, appropriately reduce the width of the remaining bridleways 7. This will preserve a wide bridleway for the switch station 2, while maintaining the overall slope gradient and essentially unaffecting stability and investment. The wide bridleway should be located above the water level 5, facilitating the layout of the switch station connecting road 4.

[0027] c. Carry out overall planning of the outgoing cable tunnel 3, and make the outgoing cable tunnel 3 and the switch station 2 intersect vertically or at a large angle close to vertical on the plane to facilitate the arrangement of the outgoing cables.

[0028] d. The outlet tunnel 3 is constructed from the inside out first. When it is about 50 meters away from the quarry, a rock plug tunnel section is reserved, and the remaining rock plug tunnel sections are subsequently excavated from the outside in.

[0029] e. During construction, first complete the interception and drainage facilities at the top of the quarry, then proceed with excavation in steps from top to bottom. After excavating to the slope one level below the switch station elevation, civil construction of the switch station can begin after the following three steps: ① Complete permanent support work on all excavated slopes to ensure the safety of subsequent switch station civil construction and equipment installation; ② Complete the rock plug section reserved for outlet tunnel 3 from the outside inward; ③ Complete the blasting vibration monitoring arrangement and conduct blasting tests to control the vibration velocity of the blasting particles to ensure that subsequent quarry mining has no impact on the switch station.

[0030] f. Carry out civil construction and equipment installation of the switch station. At this time, stone collection can still be carried out on the mountain below the water level line 5.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical principles of the present invention, several improvements and modifications can be made, such as distributing the functional areas of the switch station on the horseways at various levels in the stone yard, etc. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for arranging a quarry that takes into account switchyard layout, wherein the quarry is arranged within a reservoir layout area, and is characterized by: A wide bridleway is set up at an elevation above the water level in the quarry. The width of the wide bridleway matches the width required for the switch station layout. The bridleway is used to arrange the switch station after the quarrying is completed. The switch station leads the line through a cable outlet hole. A cable outlet hole is set up in the mountain of the quarry. The cable outlet hole and the switch station are on the same plane, intersecting vertically or at a large angle close to vertical, which is convenient for cable layout.

2. A method for arranging a quarry taking into account the layout of a switch station as claimed in claim 1, characterized in that The reservoir is the lower reservoir of a pumped storage power station.

3. A quarry layout method taking into account switchyard layout according to claim 1 or 2, characterized in that: During the planning and design of the switch station, the plane layout of the switch station was optimized and arranged into a narrow and long shape to reduce the demand for site width and facilitate the optimization of the excavation shape of the quarry.

4. The method for arranging a quarry taking into account switchyard layout according to claim 1, characterized in that: While the quarry is excavating, the upper slope support of the switch station is completed simultaneously and promptly to ensure the safety of the switch station's civil construction and equipment installation.

5. The method for arranging a quarry taking into consideration the layout of a switchyard according to claim 1, characterized in that: The cable outlet tunnel should be constructed from the inside out first, and rock plugs should be reserved near the quarry. After the excavation and support of the upper slope of the switch station is completed, construction can be carried out from the outside in.

Images