CN104012477A - Automatic fishing technology by setting up net according to water storing and draining regularity of reservoir - Google Patents

Abstract

The invention relates to an automatic fishing technology by setting up a net according to a water storing and draining regularity of a reservoir. The technology is characterized in that by using the waterhead caused by water storing and draining of the reservoir at fixed period of each year, a fishing net is set in advance and is lifted up for fishing automatically at regular intervals. The automatic fishing technology has the advantages of small investment, large benefits, and environment protection and the like.

Description

Utilize the regular drainage rule in reservoir area to establish the automatic halieutics of net

Technical field

Halieutics.

Background technology

Along with the mankind conquer nature, the ability of nature remodeling is strengthened, for flood and the power requirement of checking the floods, people have built the power station of many high dams in great rivers, along with construction and the retaining of dam, form huge reservoir area water body, in this huge reservoir area water body, a large amount of fish and aquatic organism are brought up, how the fish in this water body and aquatic organism being caught to labor, is the mankind's a great problem, and this technology is exactly one of technical method solving this difficult problem.

Summary of the invention

Along with the mankind conquer nature, the ability of nature remodeling is strengthened, for flood and the power requirement of checking the floods, people have built the power station of a lot of high dams in great rivers, and this dam has two functions at least, and the one, flood control, the 2nd, generating.For the needs of controlling flood, before every annual flood arrives, all to carry out reservoir area draining, to reduce dam water level; For the needs that generate electricity, carry out again retaining, thereby among this row one holds, just formed the very large height of water, also bring up in reservoir area that a lot of ditches slit or depression becomes hondo or dry depression in the time of draining, after retaining, become again great water body.The present invention utilizes this rule exactly, first the water inlet that becomes hondo or dry depression in the time of draining arranges fishnet, fishing net is placed on bottom of trench (as Fig. 1 or Fig. 2) by retaining phase and anhydrous period, then be about to carry out draining flood control during in reservoir area, fishing net rises (as Fig. 3), fish in fish in fishing net and aquatic organism and reservoir area and aquatic organism are separated, along with the carrying out of reservoir area draining, in fishing net, water level also decreases, in the time that water level is reduced to the bottom of set fishing net, within the fish in fishing net inner region and aquatic organism have naturally been stayed fishing net.Specific operation process is as follows: 1, select suitable position: be chosen in reservoir area drainage period can be completely or the overwhelming majority can surface, can form again gully or the depression water inlet of great water body in the dam retaining phase.According to the size dropping into, can select the size of water inlet.2, fishing net is set: at reservoir area drainage period, in the place of choosing water inlet, fishing net is set.Fishing net in reservoir area drainage period and retaining phase in contraction state (as shown in Figure 1 or 2).3, the bait of throwing something and feeding: in the retaining phase, fishing net is suitably carried out to bait throwing in inner region, to lure fish and the aquatic organism of getting in reservoir area to enter fishing region.In reservoir area by draining in earlier stage, strengthen bait and drop into, to stablize fish and aquatic organism quantity in area of fishing.4, rise fishing net: be about to carry out in reservoir area before draining, the fishing net setting is risen, the fish in area of fishing and aquatic organism are isolated to (as shown in Figure 3) with reservoir area.5, fishing: along with the decline of water level, in fishing net, water level is more and more lower, and due to the interception of fishing net, the fish in area of fishing and aquatic organism are stayed net class naturally, at this moment only use the fish of net class and aquatic organism are collected.

Brief description of the drawings

State diagram when Fig. 1 is fishing net contraction; State when Fig. 2 is fishing net contraction; State diagram when Fig. 3 is fishing net rise.

Claims (3)

1. utilize this rule of water-head that the regular drainage in reservoir area causes to establish net fishing and aquatic organism technology.

2. based on fishing and aquatic organism technology in gully and new water body under 1 of right.

3. based on establishing net maybe must build a dam fishing and aquatic organism technology under 1,2 of rights.