CN207176863U - A kind of karst depression rainfall utilizes device - Google Patents

Abstract

The utility model discloses a rainfall utilization device for karst depressions, which comprises a bottom pond and a water groove. The bottom pond is arranged at the bottom of the depression. One end of the pond is connected to the bottom pond, and the other end is connected to the longitudinal drainage. The vertical drainage ditch is connected with a horizontal intercepting ditch; the utility model intercepts the rainfall in a certain catchment area through the horizontal intercepting ditch set in the karst depression, and collects the rainfall into the water accumulation ditch through the vertical drainage ditch, The precipitation in the depression is collected into the rain pond at the bottom for storage, which can effectively solve the problem of water shortage in the production and life of residents in the karst mountainous depression, store water resources, and play a role in preventing waterlogging in the depression. This invention is suitable for water-deficient karst mountainous depressions , safe and reliable, convenient for construction and maintenance management.

Description

A device for utilizing rainfall in karst depressions

technical field

The utility model relates to a device for utilizing rainfall in karst depressions, which belongs to the technical field of rainfall and water collection equipment in karst depressions.

Background technique

Karst is widely distributed in my country. In the southwest karst mountainous area, the spatio-temporal distribution of water resources is extremely uneven. It shows that there is abundant rainfall in the region, but after the rainfall, the rainwater often quickly supplies the underground river system along the karst fissure pipeline, resulting in the lack of surface water resources and abundant groundwater. This phenomenon makes the residents in the karst depression often encounter the problem of difficult production and domestic water. However, the groundwater in karst mountainous areas is buried deep, making its construction, development and utilization more difficult. Especially in the dry season, local residents can only rely on the sky for food. At present, the water problem can only be solved by drilling wells or long-distance water delivery. However, there are problems such as high technical difficulty, high risk, and large investment in drilling wells for water. However, long-distance water transportation has problems such as small water volume, difficult supply, and easy leakage. At the same time, in the depressions in karst mountainous areas, the problem of waterlogging in the depressions will also occur due to poor rainfall and drainage, which will cause the residential houses and cultivated land at the bottom of the depressions to be submerged, resulting in large property losses. These have greatly restricted the economic development of karst mountainous areas.

Contents of the invention

The technical problem to be solved by the utility model is to provide a device for utilizing rainfall in karst depressions, so as to solve the production and living water problem of residents in karst mountainous areas, improve the utilization of water resources, and prevent waterlogging in depressions at the same time.

The technical scheme adopted by the utility model is: a device for utilizing rainfall in karst depressions, including a bottom pond and a water groove. The bottom pond is arranged at the bottom of the depression, and one end of the pond is connected to the bottom pond. One end is connected with the longitudinal drainage ditch, and the longitudinal drainage ditch is connected with the horizontal intercepting ditch.

Preferably, the above-mentioned pool at the bottom is provided with an overflow drainage ditch near the top.

Preferably, there is at least one longitudinal drainage ditch.

Preferably, there is at least one transverse intercepting ditch.

Preferably, the above-mentioned bottom pool is arranged underground in the depression, and a top cover is provided on the upper end, and a water intake is provided on the top cover.

Preferably, a sand-retaining grid is provided at the connection between the above-mentioned water accumulation groove and the bottom water accumulation pool.

Preferably, a sand-blocking step is provided at the connection between the above-mentioned water accumulation groove and the bottom water accumulation pool.

Preferably, the height of the sand-blocking steps is 10-30 cm.

Beneficial effects of the utility model: compared with the prior art, the utility model has the following effects:

(1) The utility model intercepts the rainfall in a certain catchment area through the horizontal intercepting ditch set in the karst depression, and collects the rainfall into the water accumulation ditch through the vertical drainage ditch, and collects the precipitation in the depression to the bottom rain pond for Storage can effectively solve the problem of water shortage in the production and life of residents in karst mountainous depressions, store water resources, and play a role in preventing waterlogging in depressions. This invention is suitable for water-deficient karst mountainous depressions, safe and reliable, and convenient for construction and maintenance management ;

(2) After the energy dissipation and sand-blocking effect of the sand-blocking grille and sand-blocking steps set at the outlet of the water-logging ditch, the utility model plays the role of intercepting sand, stones and sundries from entering the bottom pool;

(3) Excess rainwater can be drained into adjacent sinkholes by setting up overflow drains.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the cross-sectional structure of A-A of Fig. 1;

Fig. 3 is a schematic diagram of a cross-sectional structure of a transverse intercepting ditch;

Fig. 4 is a schematic diagram of a cross-sectional structure of a longitudinal drainage ditch.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further introduced.

Embodiment 1: as shown in Fig. 1-Fig. 4, a kind of karst depression utilization device for rainfall, see Fig. 1, it comprises pond 1 at the bottom, longitudinal drainage ditch 2, transverse cut-off ditch 3, water accumulation ditch 4, The overflow drainage ditch 5 and the bottom pond 1 are arranged at the bottom of the depression. One end of the pond 4 is connected to the bottom pond 1, and the other end is connected to the longitudinal drainage ditch 2. The longitudinal drainage ditch 2 is connected to a horizontal intercepting ditch 3. The bottom pool 1 is provided with an overflow drainage ditch 5 near the top, at least one vertical drainage ditch 2, and at least one horizontal intercepting ditch 3. The horizontal intercepting ditch 3 mainly serves to intercept rainfall in part of the catchment area in the depression. The cross-section is trapezoidal as shown in Figure 3. The longitudinal drainage ditch plays a role in dredging accumulated water, and the cross-section is rectangular, as shown in Figure 4. Conditions such as shape and local water demand are set. In this embodiment, three vertical drainage ditches 2 and three horizontal intercepting ditches 3 are selected for illustration.

The bottom pond 1 is a half-side roof structure, as shown in Figure 2, and the other half is covered with a prefabricated roof 9, which is beneficial to the maintenance and cleaning of the bottom pond 1 in the later stage. A water intake 6 is provided on the top cover , the bottom pond 1 is an underground structure, and its size can be set according to local water demand and local rainfall.

The junction of the bottom pond 1 and the pond 4 is provided with a sand-retaining grid 7 and a sand-blocking step 8 to prevent sand and debris from entering the bottom pond 1 . Sand blocking steps 8 are about 10-30 centimeters high.

The overflow drainage ditch 5 is connected with the original sinkhole of the depression, which plays a role of draining excess water and prevents the pool 1 at the bottom from being overfilled.

The vertical drainage ditch 2, the horizontal intercepting ditch 3 and the overflow drainage ditch 5 are all manually excavated, and the mortar masonry and concrete plastering are used.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model, therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (8)

1. a kind of karst depression rainfall utilizes device, it is characterised in that：Including bottom plash（1）With ponding groove（4）, bottom Plash（1）It is arranged on depression bottom, ponding groove（4）One end is communicated to bottom plash（1）, other end connection longitudinal drainage Ditch（2）, longitudinal drainage ditch（2）It is communicated with horizontal intercepting ditch（3）.

2. a kind of karst depression rainfall according to claim 1 utilizes device, it is characterised in that：Bottom plash（1）If Rest against nearly top and be provided with Overflow drainage ditch（5）.

3. a kind of karst depression rainfall according to claim 1 utilizes device, it is characterised in that：Longitudinal drainage ditch（2）Extremely Rare one.

4. a kind of karst depression rainfall according to claim 1 utilizes device, it is characterised in that：Horizontal intercepting ditch（3）Extremely Rare one.

5. a kind of karst depression rainfall according to claim 1 utilizes device, it is characterised in that：Bottom plash（1）If Put and depression underground, upper end are provided with top cover（9）, top cover（9）It is provided with intake（6）.

6. a kind of karst depression rainfall according to claim 1 utilizes device, it is characterised in that：Ponding groove（4）The bottom of with Portion's plash（1）Junction sets sediment trapping grid（7）.

7. a kind of karst depression rainfall according to claim 1 utilizes device, it is characterised in that：Ponding groove（4）The bottom of with Portion's plash（1）Junction, which is set, hinders husky step（8）.

8. a kind of karst depression rainfall according to claim 7 utilizes device, it is characterised in that：Hinder husky step（8）Highly For 10~30 centimetres.