CN203846464U

CN203846464U - Drainage hole structure

Info

Publication number: CN203846464U
Application number: CN201420264987.3U
Authority: CN
Inventors: 周跃年; 童建文
Original assignee: PowerChina Chengdu Engineering Co Ltd
Current assignee: PowerChina Chengdu Engineering Co Ltd
Priority date: 2014-05-22
Filing date: 2014-05-22
Publication date: 2014-09-24
Anticipated expiration: 2024-05-22

Abstract

The utility model discloses a drainage hole structure, and belongs to the field of technologies for designing and manufacturing buildings for hydraulic and hydropower engineering. The drainage hole structure comprises a main drainage hole, an auxiliary drainage hole and a water guide protective device. An intersection opening is formed in a side wall of the main drainage hole, the auxiliary drainage hole intersects with the main drainage hole via the intersection opening, an included angle alpha which is formed by the auxiliary drainage hole and the main drainage hole along a water flow direction is smaller than 30 degrees, and the water guide protective device is arranged on the middle upper portion of a side wall on the other side of the main drainage hole; water flow which is drained via the auxiliary drainage hole flows into the main drainage hole in flood discharge procedures and is guided by the water guide protective device when the water flow is collided with the corresponding side walls of the main drainage hole and climbs, and the top of the main drainage hole can be protected by the aid of the water guide protective device. The drainage hole structure has the advantage that flow states of the intersection water flow in the holes can be effectively improved.

Description

Drain cavern structure

Technical field

The utility model relates to a kind of drain cavern structure, belongs to Hydraulic and Hydro-Power Engineering Building Design manufacturing technology field.

Background technology

In the time must importing another drain cavern in a drain cavern layout, the flow-shape of the section of crossing is poor, and impact by the abutment wall on remittance section drain cavern opposite, cause current to be climbed along abutment wall, after impacting tunnel top, fall, cause current in hole to be reflexion and scour flow, when serious, drain cavern abutment wall and crown are caused to erosion damage.Therefore, must take certain measure to carry out following current, with reduce or eliminate fluidised form poor collect the erosion damage of current to drain cavern abutment wall and crown.Conventional solution is a distance before two strands of current cross at present, and the abutment wall that two drain caverns are intersected to side, respectively to low-angle of hole intrinsic deflection, makes two strands of current consistent as much as possible in the flow direction of intersection.But due to the section of crossing and neighbouring The turbulent river crashes its way through, fluidised form complexity, especially under high-velocity flow state, the problem of still can not solve current horizontal proliferation, climbing and repulsing or subdue the enemy.

Utility model content

Technical problem to be solved in the utility model is: a kind of drain cavern structure that can effectively improve confluent river fluidised form in hole is provided.For solving the problems of the technologies described above adopted technical scheme be: a kind of drain cavern structure, comprise main drain cavern and secondary drain cavern, on an abutment wall of described main drain cavern, be provided with to hand over and pass through hole, described secondary drain cavern passes through hole by described friendship and described main drain cavern crosses, the angle a that described secondary drain cavern and described main drain cavern form along water (flow) direction is less than 30 °, and described drain cavern structure also comprises a water guide protective device that is arranged in described main drain cavern opposite side abutment wall middle and upper part; In flood discharge process, enter the current of described main drain cavern by described secondary drain cavern excretion, in the time climbing with the corresponding abutment wall collision of described main drain cavern, guide and protect the top of described main drain cavern by described water guide protective device.

Be further; described water guide protective device is the water guide bank that is arranged in the described abutment wall middle and upper part of described main drain cavern; in sluicing process; enter the current of described main drain cavern by described secondary drain cavern excretion; by described water guide bank guiding, and make to climb flow direction-changing to protect the top of described main drain cavern not by water impact by the soffit of this water guide bank.

Further, on the upstream face of the bottom of described water guide bank, be provided with the circular arc guide structure that the shape of climbing in process with described current adapts.

Further, described water guide protective device is made up of steel concrete.

Further, the described water guide protective device of reinforced concrete structure and the corresponding abutment wall of described main drain cavern are structure as a whole.

The beneficial effects of the utility model are: owing to having arranged a water guide protective device in the middle and upper part of described main drain cavern opposite side abutment wall; and in flood discharge process; described secondary drain cavern excretion is entered to the current of described main drain cavern; in the time climbing with the corresponding abutment wall collision of described main drain cavern, thereby make flow direction-changing protect the top of described main drain cavern not impacted by described water guide protective device guiding.So just, can effectively guide the current of intersection, thereby improve the fluidised form of confluent river in hole, avoid the section of crossing current in intersection the erosion damage to main drain cavern abutment wall and crown.

Brief description of the drawings

Fig. 1 is the layout schematic diagram of the utility model drain cavern structure.

Fig. 2 is the A-A sectional view of Fig. 1.

In figure, be labeled as: hole 3, water guide protective device 4, water guide bank 5, circular arc guide structure 6 are passed through in main drain cavern 1, secondary drain cavern 2, friendship.

Detailed description of the invention

A kind of drain cavern structure that can effectively improve confluent river fluidised form in hole that the utility model provides as shown in Figure 1 and Figure 2.Described drain cavern structure comprises main drain cavern 1 and secondary drain cavern 2, on an abutment wall of described main drain cavern 1, be provided with to hand over and pass through hole 3, described secondary drain cavern 2 passes through hole 3 by described friendship and crosses with described main drain cavern 1, described secondary drain cavern 2 is less than 30 ° with the angle a that described main drain cavern 1 forms along water (flow) direction, and described drain cavern structure also comprises a water guide protective device 4 that is arranged in described main drain cavern 1 opposite side abutment wall middle and upper part; In flood discharge process, enter the current of described main drain cavern 1 by described secondary drain cavern 2 excretions, in the time climbing with the corresponding abutment wall collision of described main drain cavern 1, guide and protect the top of described main drain cavern 1 by described water guide protective device 4.Owing to having arranged a water guide protective device 4 in the middle and upper part of described main drain cavern 1 opposite side abutment wall; and in flood discharge process; described secondary drain cavern 2 excretions are entered to the current of described main drain cavern 1; in the time climbing with the corresponding abutment wall collision of described main drain cavern 1, thereby make flow direction-changing protect the top of described main drain cavern 1 not impacted by 4 guiding of described water guide protective device.So just, can effectively guide the current of intersection, thereby improve the fluidised form of confluent river in hole, avoid the section of crossing current in intersection the erosion damage to main drain cavern 1 abutment wall and crown.

In above-mentioned embodiment, in order to reduce production costs, facilitate the construction of postorder to make, described water guide protective device 4 is set to the water guide bank 5 of the described abutment wall middle and upper part that is arranged in described main drain cavern 1, in sluicing process, the current that enter described main drain cavern 1 by described secondary drain cavern 2 excretions, guide by described water guide bank 5, and make to climb flow direction-changing to protect the top of described main drain cavern 1 not by water impact by the soffit of this water guide bank 5; And described water guide protective device 4 is arranged to the reinforced concrete structure being structure as a whole with the corresponding abutment wall of main drain cavern 1.

Meanwhile, in order to improve to greatest extent the fluidised form of the hole section current that cross, the circular arc guide structure 6 that the shape that the bottom upstream face of described water guide bank 5 is set to climb in process with described current adapts.Like this, both can reduce the impact of current to described water guide bank 5 of climbing, be conducive to again improve the fluidised form of the hole section current that cross, reduce the erosion damage risk of reflexion and scour flow to main drain cavern 1 abutment wall and crown.

Claims

1. a drain cavern structure, comprise main drain cavern (1) and secondary drain cavern (2), on an abutment wall of described main drain cavern (1), be provided with to hand over and pass through hole (3), described secondary drain cavern (2) passes through hole (3) by described friendship and crosses with described main drain cavern (1), described secondary drain cavern (2) is less than 30 ° with the angle a that described main drain cavern (1) forms along water (flow) direction, it is characterized in that: described drain cavern structure also comprises a water guide protective device (4) that is arranged in described main drain cavern (1) opposite side abutment wall middle and upper part, in flood discharge process, enter the current of described main drain cavern (1) by described secondary drain cavern (2) excretion, in the time climbing with the corresponding abutment wall collision of described main drain cavern (1), guide and protect the top of described main drain cavern (1) by described water guide protective device (4).

2. drain cavern structure according to claim 1; it is characterized in that: described water guide protective device (4) is the water guide bank (5) that is arranged in the described abutment wall middle and upper part of described main drain cavern (1); in sluicing process; enter the current of described main drain cavern (1) by described secondary drain cavern (2) excretion; by described water guide bank (5) guiding, and make to climb flow direction-changing to protect the top of described main drain cavern (1) not by water impact by the soffit of this water guide bank (5).

3. drain cavern structure according to claim 2, is characterized in that: on the bottom upstream face of described water guide bank (5), be provided with the circular arc guide structure (6) that the shape of climbing in process with described current adapts.

4. according to the drain cavern structure described in claim 1,2 or 3, it is characterized in that: described water guide protective device (4) is made up of steel concrete.

5. drain cavern structure according to claim 4, is characterized in that: the described water guide protective device (4) of reinforced concrete structure is structure as a whole with the corresponding abutment wall of described main drain cavern (1).