CN111777355A - Composite brick for monitoring leakage condition of diversion canal dike and manufacturing method - Google Patents

Abstract

The invention discloses a composite brick for monitoring leakage condition of a diversion canal embankment, which comprises 7-8 parts of water, 45-55 parts of aeolian sand, 10-20 parts of polypropylene fiber, 10-20 parts of epoxy resin, 4-6 parts of diluent and 10-20 parts of copper sulfate; the brick block turns blue, and then the blue part is judged to meet water, and the dam leaks. The strength of the block is improved, so that the block can not be dissolved and split even if water permeates into the block, the stability of the structure can be still kept, and the slope toe is reinforced. Therefore, the composite brick can monitor the leakage condition of the canal levee and play a role in slope protection. The monitoring personnel can find the dangerous case at the first time through color comparison, and the lives and property are saved.

Description

Composite brick for monitoring leakage condition of diversion canal dike and manufacturing method

Technical Field

The invention relates to a composite brick for monitoring the leakage condition of a diversion canal dike, belonging to the field of protection monitoring of the canal dike in arid and semi-arid regions

Background

In arid and semiarid regions of China, a large number of water diversion channels are constructed locally to store and transport water resources due to dry climate, small annual precipitation and serious shortage of water resources. However, the canal dike is impacted by water flow for a long time in the service process, leakage easily occurs, once a seepage channel is formed inside the canal dike, the water flow flows out from the outer slope of the canal dike, so that the soil of the canal dike collapses, the stability of the canal dike is damaged, and the safety of the canal dike is endangered. The earth-rock dam is most easily threatened by seepage, and more than 90% of dikes are caused by seepage damage in China. Therefore, leakage monitoring of the trench banks is very important. Certainly, seepage is inevitable, and the key point is that the position of the leakage of the canal dyke can be accurately found in time, the leakage range is determined, corresponding measures are taken according to the actual situation of the leakage to ensure the safety and the stability of the canal dyke, and potential safety hazards are eliminated. However, in arid and semi-arid regions, water is evaporated quickly, little accumulated water at the toe of the slope is gradually evaporated along with the lapse of time, and if the conventional way of manually patrolling to check the leakage of the bank is adopted, the leakage of the bank is easily judged by mistake. Therefore, a composite brick for monitoring the leakage condition of the diversion canal embankment and a manufacturing method thereof are needed.

Disclosure of Invention

To current demand, provide a composite brick for monitoring diversion canal dike seepage condition now. The brick block utilizes the characteristic that copper sulfate changes color when meeting water, and is applied to monitoring the leakage condition of the canal dike.

A composite brick for monitoring leakage conditions of diversion canal banks in dry and semi-arid regions comprises 7-8 parts of water, 45-55 parts of aeolian sand, 10-20 parts of polypropylene fiber, 10-20 parts of epoxy resin, 4-6 parts of diluent and 10-20 parts of copper sulfate; the brick block turns blue, then it meets water to judge blue department, and the diversion canal dyke takes place the seepage.

Further, the paint comprises 8 parts of water, 50 parts of aeolian sand, 15 parts of polypropylene fiber, 15 parts of epoxy resin, 5 parts of diluent and 15 parts of copper sulfate.

Furthermore, the length, width and height of the composite brick are 240 mm × 120 mm × 55 mm.

A manufacturing method of a composite brick for monitoring the leakage condition of a diversion canal dike comprises the following steps:

the method comprises the steps of (1) mixing water and aeolian sand to obtain aeolian mortar with the water content of 14-16%;

adding polypropylene fibers into the air-laid mortar in the step (1), and stirring for 5 minutes to uniformly distribute the polypropylene fibers in the air-laid mortar to form fiber reinforced air-laid sand;

step (3), adding a diluent into the epoxy resin;

step (4), adding the epoxy resin obtained in the step (3) into the fiber reinforced aeolian sand obtained in the step (2) to obtain mixed mortar, and stirring for 2 minutes;

adding copper sulfate powder into the mixed mortar obtained in the step (4), and stirring for 10 minutes by using a stirrer;

pouring the material obtained in the step (5) into a mold, and placing the mold on a plain jolter for plain jolting;

step (7), placing the mold into a curing box for curing, adjusting the temperature to 25 ℃, and keeping the time for at least 24 hours;

and (8) removing the mold to obtain the composite brick.

The aeolian sand in the arid area is widely distributed, and the raw materials are convenient to obtain. The aeolian sand in a natural state has poor engineering property, low strength, good water permeability and large permeability coefficient, and the moisture in the sand can be dissipated in a downward permeation and surface evaporation mode. The existing experimental research shows that the addition of the polypropylene fiber can improve the shear strength of the aeolian sand and enhance the capability of resisting hydraulic scouring. The anhydrous copper sulfate is white powder, is stable at normal temperature and pressure, and does not deliquesce. When anhydrous copper sulfate crystallizes from the aqueous solution, blue copper sulfate pentahydrate is produced; after the crystal water is lost by heating, the crystal water is decomposed and gradually weathered in dry air, and the blue color disappears.

Has the advantages that:

the composite brick provided by the invention takes aeolian sand as a base material of the brick, and the strength of the brick is improved by adding the polypropylene fiber, so that the block can not be dissolved and split even if water permeates into the block, the structural stability can be still maintained, and the toe is reinforced. Therefore, the composite brick can monitor the leakage condition of the canal levee and play a role in slope protection. By the property of copper sulfate to change color, it turns blue upon contact with water. Related monitoring personnel can purposefully carry out leakage detection, so that whether the canal dike leaks or not can be judged at the first time, and compared with the traditional monitoring method, the method is time-saving, labor-saving and accurate.

Description of the drawings:

FIG. 1 is a schematic cross-sectional view of a trench bank according to the present invention.

Detailed Description

Example 1

The composite brick for monitoring the leakage condition of the diversion canal embankment has the length, width and height of 240 mm multiplied by 120 mm multiplied by 55 mm; the paint comprises 7 parts of water, 45 parts of aeolian sand, 10 parts of polypropylene fiber, 10 parts of epoxy resin, 4 parts of diluent and 10 parts of copper sulfate.

The manufacturing method of the composite brick for monitoring the leakage condition of the diversion canal embankment comprises the following steps of (1) mixing 7 parts of water and 45 parts of aeolian sand to obtain aeolian mortar;

adding 10 polypropylene fibers into the air-laid mortar in the step (1), and stirring for 5 minutes to uniformly distribute 10 parts of polypropylene fibers in the air-laid mortar to form fiber reinforced air-laid sand;

step (3), adding 4 parts of diluent to 10 parts of epoxy resin;

step (4), adding the epoxy resin obtained in the step (3) into the fiber reinforced aeolian sand obtained in the step (2) to obtain mixed mortar, and stirring for 2 minutes;

adding 10 parts of copper sulfate powder into the mixed mortar obtained in the step (4), and stirring for 10 minutes by using a stirrer;

pouring the material obtained in the step (5) into a mold, and placing the mold on a plain jolter for plain jolting;

step (7), placing the mould into a curing box for curing at the temperature for a certain time;

and (8) removing the mold to obtain the composite brick.

Example 2

The composite brick for monitoring the leakage condition of the diversion canal embankment has the length, width and height of 240 mm multiplied by 120 mm multiplied by 55 mm; the paint comprises 8 parts of water, 55 parts of aeolian sand, 20 parts of polypropylene fiber, 20 parts of epoxy resin, 6 parts of diluent and 20 parts of copper sulfate.

The manufacturing method of the composite brick for monitoring the leakage condition of the diversion canal embankment comprises the following steps of (1) mixing 8 parts of water and 55 parts of aeolian sand to obtain aeolian mortar;

adding 20 polypropylene fibers into the air-laid mortar in the step (1), and stirring for 5 minutes to uniformly distribute 20 parts of polypropylene fibers in the air-laid mortar to form fiber reinforced air-laid sand;

step (3), adding 6 parts of diluent to 20 parts of epoxy resin;

step (4), adding the epoxy resin obtained in the step (3) into the fiber reinforced aeolian sand obtained in the step (2) to obtain mixed mortar, and stirring for 2 minutes;

adding 20 parts of copper sulfate powder into the mixed mortar obtained in the step (4), and stirring for 10 minutes by using a stirrer;

pouring the material obtained in the step (5) into a mold, and placing the mold on a plain jolter for plain jolting;

step (7), placing the mould into a curing box for curing at the temperature for a certain time;

and (8) removing the mold to obtain the composite brick.

Example 3

The composite brick for monitoring the leakage condition of the diversion canal embankment has the length, width and height of 240 mm multiplied by 120 mm multiplied by 55 mm; the paint comprises 8 parts of water, 50 parts of aeolian sand, 15 parts of polypropylene fiber, 15 parts of epoxy resin, 5 parts of diluent and 15 parts of copper sulfate.

The manufacturing method of the composite brick for monitoring the leakage condition of the diversion canal embankment comprises the following steps of (1) mixing 8 parts of water and 50 parts of aeolian sand to obtain aeolian mortar;

adding 15 polypropylene fibers into the air-laid mortar in the step (1), and stirring for 5 minutes to uniformly distribute 15 parts of polypropylene fibers in the air-laid mortar to form fiber reinforced air-laid sand;

step (3), adding 4 parts of diluent to 15 parts of epoxy resin;

step (4), adding the epoxy resin obtained in the step (3) into the fiber reinforced aeolian sand obtained in the step (2) to obtain mixed mortar, and stirring for 2 minutes;

adding 15 parts of copper sulfate powder into the mixed mortar obtained in the step (4), and stirring for 10 minutes by using a stirrer;

pouring the material obtained in the step (5) into a mold, and placing the mold on a plain jolter for plain jolting;

step (7), placing the mould into a curing box for curing at the temperature for a certain time;

and (8) removing the mold to obtain the composite brick.

As shown in fig. 1, when the leakage occurs in the bank, the water flow seeps inside the bank along the seepage line, and the accumulated water may appear at the outer slope toe. The water evaporation in arid areas is fast, little ponding of toe department can evaporate gradually along with the time lapse, if take artifical patrol inspection canal dyke seepage's mode in the past, whether take place the easy wrong judgement of seepage to the canal dyke. However, the composite brick is laid on an outer slope surface (as shown in a thick line in fig. 1) below a corresponding water level line, and by utilizing the characteristic that copper sulfate turns blue when meeting water, when water flows out of a channel bank, as fibers form capillary channels in aeolian sand, water enters the brick along the trend, and the brick is obviously discolored. Through the whole dyke of unmanned aerial vehicle aerial photography, carry out accurate GPS location to the photo of shooing, splice and can obtain the real-time looks of whole dyke. The grey level processing is carried out on the photo, so that the color change of the outer slope of the canal dike can be directly seen from the image, and the blue part is a possible leakage point; or the leakage points and the leakage range can be found through color comparison through manual inspection of monitoring personnel. And then, related monitoring personnel go to the position for further inspection, so that the dangerous leakage situation of the canal levee can be known at the first time, and compared with the traditional monitoring method, the method is time-saving, labor-saving and accurate. The aeolian sand is used as the base material of the brick, the strength of the brick is improved by adding the fiber, so that the block can not be dissolved and split even if water permeates into the block, the stability of the structure can be still kept, and the slope toe is reinforced. Therefore, the composite brick can monitor the leakage condition of the canal levee and play a role in slope protection.

Claims (4)

1. The utility model provides a compound brick for monitoring diversion canal dike seepage condition which characterized in that: the paint comprises 7-8 parts of water, 45-55 parts of aeolian sand, 10-20 parts of polypropylene fiber, 10-20 parts of epoxy resin, 4-6 parts of diluent and 10-20 parts of copper sulfate; the fragment of brick setting becomes blue in the diversion dyke outside, then judges blue department and meets water, and the seepage takes place for the diversion dyke.

2. The composite brick for monitoring the leakage condition of the diversion canal embankment according to claim 1, characterized in that: the paint comprises 8 parts of water, 50 parts of aeolian sand, 15 parts of polypropylene fiber, 15 parts of epoxy resin, 5 parts of diluent and 15 parts of copper sulfate.

3. The composite brick for monitoring the leakage condition of the diversion canal embankment according to claim 1, characterized in that: the length, width and height of the composite brick are 240 mm multiplied by 120 mm multiplied by 55 mm.

4. A manufacturing method of a composite brick for monitoring the leakage condition of a diversion canal dike is characterized by comprising the following steps:

the method comprises the steps of (1) mixing water and aeolian sand to obtain aeolian mortar with the water content of 14-16%;

adding polypropylene fibers into the air-laid mortar in the step (1), and stirring for 5 minutes to uniformly distribute the polypropylene fibers in the air-laid mortar to form fiber reinforced air-laid sand;

step (3), adding a diluent into the epoxy resin;

step (4), adding the epoxy resin obtained in the step (3) into the fiber reinforced aeolian sand obtained in the step (2) to obtain mixed mortar, and stirring for 2 minutes;

adding copper sulfate powder into the mixed mortar obtained in the step (4), and stirring for 10 minutes by using a stirrer;

pouring the material obtained in the step (5) into a mold, and placing the mold on a plain jolter for plain jolting;

step (7), placing the mold into a curing box for curing, adjusting the temperature to 25 ℃, and keeping the temperature for 24 hours;

and (8) removing the mold to obtain the composite brick.

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