CN212153263U

CN212153263U - Navigation diversion project except that spiral shell engineering

Info

Publication number: CN212153263U
Application number: CN201821621422.0U
Authority: CN
Inventors: 王路遥; 刘诗语; 鞠汶倩; 戴钰; 肖柏青; 张政
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2020-12-15
Anticipated expiration: 2028-09-30

Abstract

A snail removal project of a navigation diversion project comprises a plain canal with a lower terrain and a mountain canal located in a watershed area, wherein a water replenishing channel is arranged at the highest elevation of the mountain canal, and is communicated with a water replenishing source; the river-crossing water diversion channel is provided with a water diversion channel which is connected with a mountain canal in parallel, a pump station and a snail removal pond are sequentially arranged on the water diversion channel, and a trash holding buoy and a snail prevention blocking net are arranged in the snail removal pond. The utility model discloses the middle mountain area canal is only responsible for navigation and not responsible for the diversion, and navigation diversion project diversion flow is whole to be carried through the diversion channel, has avoided removing the difficulty that the spiral shell was handled on the navigation canal. The utility model has the advantages of low management cost, small prevention risk and the like, and is suitable for popularization and application in navigation diversion engineering needing prevention of schistosomiasis diffusion risk.

Description

Navigation diversion project except that spiral shell engineering

Technical Field

The utility model belongs to the technical field of the water conservancy blood defence, concretely relates to navigation diversion engineering remove spiral shell engineering.

Background

Schistosomiasis is a serious infectious disease which seriously harms the health of people in China and influences the development of social economy and society, and has strong infectivity, multiple transmission links and wide epidemic range. The oncomelania is the largest vector of the source of schistosomiasis and the only intermediate host of schistosomiasis, and practice proves that the propagation and prevalence of schistosomiasis can be effectively blocked by controlling the oncomelania diffusion. The snails are very slow in creeping speed, the long-distance diffusion of the snails is mainly carried out by water flow, the snails can be attached to water surface floaters such as dry branches and leaves and the like, can drift along with water and can also move under the action of water flow at the bottom of the water, and when the water flow speed is high, the snails can also move in a hanging mode in the water.

Along with the development of economy, the demand on water resources is increased, the water diversion quantity of the diversion project is increased gradually, the risk of the dispersion of the oncomelania from an affected area to an uninfected area is increased greatly, and for example, the schistosomiasis dispersion risk exists in both the established diversion project and the constructed diversion project. The hydraulic blood defense engineering refers to engineering measures adopted for snail prevention and snail killing in the hydraulic engineering. How to take effective measures to prevent oncomelania from diffusing through water diversion engineering is one of the problems that must be solved by water conservancy and blood defense. The conventional water conservancy and blood defense engineering measures, particularly snail prevention technologies such as a snail sedimentation tank, a snail prevention blocking net and middle-layer water taking, play an important role in controlling the dispersion of oncomelania, but the conventional water conservancy and blood defense engineering measures are implemented in channels where ships do not pass. In order to better develop economy, some large-scale cross-basin diversion projects also have a navigation function, and the traditional spiral blocking technology is difficult to implement at the middle end of the diversion project (namely a main line of the diversion canal) because ships come and go in the canal. At present, the engineering measures of diuresis and blood prevention in the cross-basin navigation diversion project are all placed at the head end or the tail end of the navigation diversion project, and the main measures comprise: hardening the slope of the river bank at the entrance section, arranging a snail-sinking pond at the entrance of the navigation diversion project, arranging snail-preventing blocking nets at the tail ends of the navigation diversion project, namely on all branch channels, and the like. The water conservancy and blood defense engineering measures have the advantages of wide related range, high management cost and high risk of the oncomelania breaking through a defense line.

Disclosure of Invention

In order to overcome current water conservancy blood defence engineering measure can't remove the spiral shell in the middle-end of crossing basin navigation diversion engineering and prevent the not enough of spiral shell, the utility model provides a navigation diversion engineering remove spiral shell engineering.

The technical scheme of the utility model as follows:

a snail removal project of a navigation diversion project comprises a plain canal with a lower terrain and a mountain canal located in a watershed area, wherein the mountain canal is provided with two ship locks, a water replenishing channel is arranged at the highest elevation position of the mountain canal between the two ship locks, and the water replenishing channel is communicated with a water replenishing source area; the river-crossing water diversion channel is connected with a mountain canal in parallel, a pump station and a snail removal pond are sequentially arranged on the water diversion channel, and a sewage blocking buoy and a snail prevention blocking net are arranged in the snail removal pond.

Preferably, the average width and the water depth of the snail removal pond are more than 3 times of the average width and the water depth of the water diversion channel.

Preferably, the number of the snail removal pools is two, so that the snail removal pools can be alternately used.

The beneficial effects of the utility model reside in that:

1. the utility model discloses a method that sets up a diversion canal parallelly connected with mountain area canal in addition cuts the navigation function and the diversion function of navigation diversion engineering in basin watershed ground, and the required navigation water yield of mountain area canal that is responsible for navigation comes from basin watershed ground, need not remove the spiral shell, has avoided removing the difficulty that the spiral shell was handled on navigation canal, and navigation diversion engineering diversion flow is whole to be carried through the diversion canal, removes the spiral shell and prevents that the spiral shell only need go on the diversion canal except that the spiral shell pond, and the precaution scope is little, and low in management cost prevents that the risk is little.

2. The utility model provides a remove spiral shell pond and adopted trash holding buoy surface of water interception, bottom of the pool to subside, prevent that combination formula such as spiral shell arresting barrier pond tail interception removes spiral shell measure, combines from top to bottom, and the front and back is looked after, has both guaranteed effectively cleaing away to oncomelania, has alleviateed the rubbish jam pressure of preventing the spiral shell arresting barrier again.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-1, 1-2-plain canal, 2-pump station, 3-snail removal pool, 4-snail prevention barrier net, 5-water diversion channel, 6-trash buoy, 7-1, 7-2-ship lock, 8-water supplement channel, 9-water supplement water source place and 10-mountain canal.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, a snail removal project of a navigation diversion project comprises plain canal canals 1-1 and 1-2 with lower terrain and a mountain canal 10 located in a watershed area of a drainage basin, wherein a diversion canal 5 connected with the mountain canal 10 in parallel is excavated in the watershed area of the drainage basin, the elevation of the river bottom of the mountain canal 10 connected with the diversion canal 5 in parallel is the highest in the whole canal, two ship locks 7-1 and 7-2 are arranged on the mountain canal 10, a water replenishing channel 8 is arranged at the highest elevation of the mountain canal 10 between the two ship locks 7-1 and 7-2, the water replenishing channel 8 is communicated with a water replenishing land 9, and the water replenishing land 9 can be a higher reservoir or lake or a mountain river with higher water level; a pump station 2 and a snail removal pond 3 are sequentially arranged on the water diversion channel 5, and a trash holding buoy 6 and a snail prevention blocking net 4 are arranged in the snail removal pond 3; the average width and the water depth of the snail removal pool 3 are more than 3 times of the average width and the water depth of the water diversion channel 5.

The arrow in fig. 1 indicates the water flow direction, water flows from the diversion river into the plain canal 1-1, if necessary, a water pump can be used for pumping water to raise the water level of the canal, one path of the water flows to the watershed area, the water flows through the diversion channel 5 to cross the watershed area and then flow to the downstream plain canal 1-2, and finally flows into the river needing water supplement to complete the diversion task. The diversion water flow of navigation diversion project is whole to be removed the spiral shell processing through removing spiral shell pond 3, be equipped with pump station 2 on diversion channel 5, rivers are promoted the back and flow in and remove spiral shell pond 3, it is not only wide but also dark to remove spiral shell pond 3, rivers become gentle, the bottom of the pool will be subsided to the heavier rubbish of aquatic and partial oncomelania, be equipped with on removing the 3 surface of water in spiral shell pond and block dirty flotation pontoon 6, the floater of aquatic and adsorb the oncomelania on it will be intercepted, the oncomelania that remains the screen leakage will be intercepted by 3 terminal anti-spiral shell screens 4 in spiral shell pond. The river resistance of the trash is small because the water passing area of the snail prevention barrier net 4 is large. Two of the snail removal pools 3 can be arranged so as to be used alternately. When one snail removal pond 3 runs for a long time, the operation can be suspended for a period of time, and the desilting at the bottom of the pond, the recovery of garbage on the water surface or the replacement of the snail prevention blocking net 4 are carried out in the period of time. The ship passes through the ship locks 7-1 and 7-2 on the canal, the water quantity required by the canal 10 in the mountain area for navigation is supplemented by a method of introducing water from a water replenishing water source area 9 at high altitude such as a mountain river or a reservoir in a watershed area, and the water flow flows to the plain canals 1-1 and 1-2 on the two sides from the middle end of the canal 10 in the mountain area, so that the oncomelania is fundamentally prevented from migrating along the navigation water flow.

Claims

1. The utility model provides a navigation diversion engineering remove spiral shell engineering, includes the lower plain canal of relief and is located the mountain area canal in watershed area, its characterized in that: a water replenishing channel is arranged at the highest altitude elevation of the canal in the mountainous area, and the water replenishing channel is communicated with a water replenishing source; the river-crossing water diversion channel is connected with a mountain canal in parallel, a pump station and a snail removal pond are sequentially arranged on the water diversion channel, and a sewage blocking buoy and a snail prevention blocking net are arranged in the snail removal pond.

2. The navigation diversion project except that spiral shell engineering of claim 1, characterized in that: the average width and the water depth of the snail removal pool are more than 3 times of the average width and the water depth of the water diversion channel.