JP5083996B2 - Water leak measurement method - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a water leak measurement method for a water channel that measures the amount of water leak from a concrete channel block for water channel and the amount of water leak from a joint material arranged at the joint of the concrete block for water channel.

  For example, agricultural irrigation channels and the like are configured by joining and connecting a large number of concrete blocks for concrete water channels having a U-shaped cross section in a juxtaposed state. Conventionally, concrete blocks for water channels in such channels are themselves. There is no established method for measuring the amount of water leaked or the amount of water leaked from joints located at the joints of concrete blocks for waterways.

  The present invention provides an epoch-making waterway leakage measurement method capable of measuring the amount of water leakage from a concrete block for a waterway and the amount of water leakage from a joint material of a concrete block for a waterway at the site. It is.

  The gist of the present invention will be described with reference to the accompanying drawings.

A method for measuring water leakage in a waterway comprising a plurality of waterway concrete blocks 1 connected in a juxtaposed manner, wherein the inner wall surface 2 of the waterway concrete block 1 is covered with the inner wall surface 2. A covering body 5 having a water supply port 4 capable of forming a water supply gap 3 is disposed between the water supply gap 4 and the cover body 5 is fixed to the inner wall surface 2 so that the water supply gap 3 is stopped. The semi-cylindrical covering 5 is employed, and the covering 5 is disposed on the inner wall surface 2 of the waterway concrete block 1 and fixed by adhesion or pressure bonding, thereby covering the covering 5 covered with the covering 5. A water leakage is formed by forming a water supply gap 3, supplying water from the water supply port 4 to the water supply gap 3 that has stopped and leaving the water supply gap 3 for a predetermined time, and then measuring the amount of water reduction in the water supply gap 3. It relates to the measurement method.

Further, the present invention is a method for measuring water leakage in a waterway formed by joining a large number of waterway concrete blocks 1 in a juxtaposed manner, wherein the inner wall surface 2 of the waterway concrete block 1 is covered with the inner wall surface 2. 2 is provided with a water supply port 4 capable of forming a water supply gap 3, and the cover 5 is fixed to the inner wall surface 2 so that the water supply gap 3 is stopped. The flexible sheet-like covering 5 is employed, and both sides of the covering 5 are adhesively fixed or pressure-bonded to the inner wall surface 2 of the waterway concrete block 1 with its central portion slackened. By fixing, the gap 3 for water supply is formed between the central portion of the covering 5 and the inner wall surface 2 of the concrete block 1 for waterway, and water is supplied from the water supply port 4 to the water supply gap 3 which has been stopped. After leaving for a predetermined time, in this water supply gap 3 Those relating to water leakage measurement method waterways and measuring the water-reducing amount.

  Further, the present invention is a method for measuring water leakage in a waterway formed by joining a large number of waterway concrete blocks 1 in a juxtaposed manner, wherein the inner wall surface 2 of the waterway concrete block 1 is covered with the inner wall surface 2. A covering body 5 having a water supply port 4 capable of forming a water supply gap 3 between the joint material 2 and the joint material 6 interposed between the joints of the waterway concrete block 1 is arranged so as to cover the joint material 6. In addition, the cover 5 is fixed to the inner wall surface 2 so that the water supply gap 3 is in a water-stopping state, and water is supplied to the water supply gap 3 from the water supply port 4 and left for a predetermined time. The present invention relates to a method for measuring water leakage in a water channel, characterized in that the amount of water reduction in the water supply gap 3 is measured.

In addition, after supplying water to the water supply gap 3, the inside of the water supply gap 3 is pressurized by using a pressurizing pump 7, and the inner wall surface 2 of the waterway concrete block 1 provided in the water supply gap 3 or the grant uniform pressure to joint member 6, after a predetermined time left in the pressurized state, according to any one of claims 1 to 3, characterized in that to measure the water-reducing amount of the water supply gap 3 This relates to the water leakage measurement method for waterways .

  Since the present invention is configured as described above, the amount of water leakage from the inner wall surface of the concrete channel block for waterway or the amount of water leakage from the joint material interposed between the joints of the concrete block for waterway can be set by simply installing the measuring equipment on site. This is an epoch-making waterway leakage measurement method that is extremely practical and can be measured very easily.

Moreover, in invention of Claim 1, 2, it becomes the water leak measurement method of the water channel which was excellent in the practicality from which the coating body which exhibits the said effect | action and effect reliably can be design-implemented easily.

Moreover, in the invention of Claim 4 , it becomes the water leak measuring method of the water channel which was able to measure a more exact amount of water leaks, and was excellent in the practicality .

It is a schematic explanatory drawing which shows the completion state of the measurement equipment of Example 1. It is a description perspective view which shows the state which is going to arrange | position the coating body of Example 1 along a joint material. FIG. 3 is an enlarged explanatory plan view showing a main part of the first embodiment. 10 is an enlarged explanatory plan view showing a main part of Example 2. FIG. It is a schematic explanatory drawing which shows the completion state of the measuring equipment of Example 3. It is a description perspective view which shows the state which has arrange | positioned the coating body of Example 3 along the joint material. FIG. 6 is an enlarged explanatory plan view showing a main part of Example 3.

  Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  When the covering body 5 is disposed on the inner wall surface 2 of the concrete block for waterway 1, the covering body 5 covers the inner wall surface 2, and a water supply gap 3 is formed between the inner wall surface 2.

  Next, the covering body 5 is fixed to the inner wall surface 2 so that the water supply gap 3 is stopped. Water is supplied to the water supply gap 3 from the water supply port 4 and left for a predetermined time.

  After leaving, the amount of water leaked through the inner wall surface 2 of the waterway concrete block 1 (penetrated into the waterway concrete block 1 and leaked) can be confirmed by measuring the water reduction amount of the water supply gap 3 .

  Similarly, the covering 5 is disposed so as to cover the joint material 6 along the joint material 6 interposed at the seam of the concrete block 1 for the waterway, and the covering 5 is disposed on the concrete block 1 for the waterway. The water supply gap 3 is fixed to the inner wall 2 of the water supply, and the water supply gap 3 is stopped. After the water supply gap 3 is supplied with water and left for a predetermined time, the amount of water reduction in the water supply gap 3 is measured, The amount of water leaked through the joint material 6 can be confirmed.

  Therefore, since the measuring equipment is completed simply by fixing the covering 5 to the concrete block 1 for waterways, the measuring equipment can be easily installed on site, and the water supply gap formed by the covering 5 after the installation is provided. The measurement can be started simply by putting water into 3, and after that, it is only necessary to leave it for a predetermined time, so the amount of water leaked through the inner wall surface 2 of the concrete block for waterway 1 or the concrete block for waterway The amount of water leaked through the joint material 6 interposed in one seam can be measured very easily.

  Further, for example, after supplying water to the water supply gap 3, the inside of the water supply gap 3 is pressurized by using a pressurizing pump 7, and the inner wall surface 2 of the waterway concrete block 1 erected in the water supply gap 3. Alternatively, if a uniform water pressure is applied to the joint material 6 and left for a predetermined time in this pressurized state, and then the amount of water reduction in the water supply gap 3 is measured, Since uniform water pressure is applied to the entire wall 2 or joint material 6 (measurement location), unevenness in water leakage due to differences in water depth at the measurement location is unlikely to occur, and more accurate measurement results (water leakage) can be confirmed. become.

  A first embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, water leakage measurement of a water channel constituted by connecting a large number of concrete blocks 1 having a U-shaped cross section or a U-shaped cross section with side wall portions 1A standing on both sides of the bottom wall portion 1B in a juxtaposed state. The drawing relates to a method, and the drawing shows a case where the amount of water leakage from the joint material 6 interposed in the joint of the concrete block 1 for a water channel arranged side by side is measured.

  Specifically, as shown in FIG. 2 and FIG. 3, first, a joint material 6 interposed between the inner wall surface 2 of one side wall portion 1 </ b> A of the concrete channel block 1 and the seam of the concrete channel block 1. The semi-cylindrical covering 5 is brought into contact with the vertical state so as to cover the joint material 6 along the edges of the side walls 1 </ b> A of the concrete block for waterway 1 arranged side by side.

  Then, the covering 5 covers the joint material 6 and the end of the inner wall surface 2 of the side wall 1A adjacent thereto, and the water supply having a semicircular cross section is formed between the joint material 6 and the side wall 1A. A working gap 3 is formed (see FIG. 3).

  Moreover, the covering 5 of the present embodiment employs a PVC pipe having a length of 1800 mm and a diameter of 100 mm that is halved.

  Next, as shown in FIG. 1, a plurality of (two in the drawing) pressers 8 constituted by a single pipe or the like between the covering 5 and the inner wall surface 2 of the other side wall 1 </ b> A of the concrete block 1 for waterways. The covering body 5 is held in the vertical contact state by being installed and stretched, and the covering body 5 is reinforced so as not to be displaced by the water pressure of the water 14 put in the water supply gap 3.

  Next, this covering body 5 is adhered to the inner wall surface 2 of the side wall portion 1A of the concrete block for waterway 1 using an adhesive 10 such as an epoxy adhesive or quick setting cement, for example, and this vertically covering body 5 is provided. The gap between the inner wall surface 2 and the joint material 6 between the left and right end portions and the bottom end portion excluding the upper portion of the cover 5 is filled, and the opening at the upper portion of the cover 5 is used as the water supply port 4 to the inner surface of the cover 5. Water can be supplied to the gap 3 for water supply formed between the inner wall surface 2 of the side wall portion 1A. And in the state supplied with water, it is comprised so that the water 14 may leak only so that it may infiltrate into the inner wall surface 2 and the joint material 6 of the concrete block 1 for waterways. The adhesive 10 is preferably selected in consideration of damage to the waterway concrete block 1.

  Next, water is supplied to the vicinity of the top end of the covering 5 using the graduated cylinder 11 in the water supply gap 3 which has been stopped, and then left for 24 hours. Oil may be added to prevent evaporation of the water 14 in the water supply gap 3.

  After 24 hours, water is supplied again with the graduated cylinder 11, and the amount of water decreased (leakage amount) for 24 hours can be determined by measuring the amount of water supplied at this time. From the difference between the water level in the water supply gap 3 at the start of the measurement and the water level in the water supply gap 3 after the end of the measurement, the water reduction amount for 24 hours may be obtained.

  Further, during the measurement, water supply may be performed so that the water supply gap 3 is always full, and this water supply amount may be measured. When the measurement is performed in this way, the water pressure in the water supply gap 3 is measured. Therefore, it is considered that more accurate water loss can be obtained.

  In addition, for example, by supplying water into the water supply gap 3 and leaving it for 24 hours or more, water 14 is preliminarily immersed in the concrete block 1 for waterway, and this measurement point is in a water saturation state where there is no room for water 14 to enter. After that, the amount of water reduction may be measured by supplying water to the water supply gap 3 again. When the measurement is performed in this manner, the infiltration of moisture into the concrete block for waterway 1 is not considered. Therefore, it is considered that more accurate water reduction amount from the joint material 6 can be obtained.

  The amount of water leakage per hour is calculated from the water loss value obtained as a result. For example, in this embodiment, the amount of water leakage is calculated by a calculation formula of (water reduction amount) ÷ ((measurement time) × (contact area to the inner wall surface 2 and joint material 6 of the gap 3 for water supply)). Since there are various other calculation methods for the calculation, it is possible to change the design as appropriate.

  In addition, the amount of water leakage may be measured at a plurality of locations, and the average value of the amount of water leakage may be obtained.

  After completion of the measurement, the covering 5 is removed from the inner wall surface 2.

  In the present embodiment, although not shown in the drawings, if a leak is measured in the same manner as described above by covering a part of the inner wall surface 2 of the side wall 1A of the concrete channel block 1 with the covering 5, the concrete block for the water channel is used. It is possible to measure the amount of water leakage (infiltration amount) from one side wall portion 1A.

  Moreover, although not shown in figure, the covering 5 is fixed to the bottom wall part 1B of the concrete block 1 for waterways, or is fixed so that the joint material 6 between the bottom wall parts 1B may be covered, and the inner wall surface of the bottom wall part 1B It is also possible to measure the amount of water leakage 2 or the amount of water leakage from the joint material 6 between the bottom wall portions 1B.

  A second embodiment of the present invention will be described with reference to FIG.

  The present embodiment is a case where the method for fixing the covering 5 to the inner wall surface 2 of the concrete channel block 1 in the first embodiment is changed.

  Specifically, a belt-shaped leakage backup material 12 is disposed between the left and right end portions and the bottom end portion of the covering 5 and the inner wall surface 2 (side wall portion 1A), and the covering 5 and the water channel A plurality of pressers 8 (which may have a stretchable structure) are installed between and stretched between the inner wall surface 2 of the other side wall 1A of the concrete block 1 for use, and the covering 5 is (backup) This shows a case where the side wall portion 1A is vertically fixed to the side wall portion 1A (via the material 12).

  Further, in this embodiment, the water-stopping material 13 is laid from the outside of the backup material 12 along the backup material 12, so that the left and right end portions and the bottom side excluding the upper portion of the vertical covering body 5 are provided. The gap between the end portion, the inner wall surface 2 of the side wall portion 1A, and the joint material 6 is reliably filled and the water is stopped.

  Others are the same as those of the first embodiment.

  A third embodiment of the present invention will be described with reference to FIGS.

  In the present embodiment, as shown in FIG. 5, along the joint material 6 arranged at the seam of the concrete block 1 for waterways, the other side wall 1A from the upper part of one side wall 1A through the bottom wall 1B. The case where the joint material 6 is covered with the covering 5 in the range up to the upper part of and the amount of water leakage is measured is shown.

  Specifically, the covering 5 of the present embodiment is configured by adopting a flexible band-shaped hard vinyl sheet, and the covering 5 is disposed along the joint material 6 and the covering 5 is provided. After loosening the central part in the length direction to the inside of the side wall part 1A, both side parts are bonded and fixed to the side wall part 1A adjacent to the joint material 6 and the inner wall surface 2 of the bottom wall part 1B using an adhesive 10. The gap between the inner side surface of the center portion of the covering 5 and the joint material 6 is defined as a water supply gap 3. For example, both side portions of the covering 5 may be fixed by crimping as in the second embodiment or may be fixed by other fixing means.

  One end of the water supply gap 3 is stopped, and the other end of the water supply gap 3 is used as a water supply port 4 to supply water from the water supply port 4, and then a pressure pump 7 is connected to the water supply port 4 through a connecting pipe 9. The pressure pump 7 feeds water into the water supply gap 3 to pressurize the water supply gap 3 evenly, and the inner wall surface 2 and joints of the waterway concrete block 1 erected in the water supply gap 3. Water pressure is applied evenly to the material 6.

  By leaving it in this pressurized state for 24 hours, and then measuring the amount of water supplied by the pressure pump 7, the amount of reduced water (leakage) for 24 hours can be determined.

  In this embodiment, since uniform water pressure is applied to the entire measurement location, unevenness in the amount of leakage due to differences in water depth at the measurement location is unlikely to occur, and a more accurate measurement result (water leakage) can be confirmed.

  In this embodiment, the covering body 5 is covered over the entire range from the upper part of one side wall part 1A to the upper part of the other side wall part 1A via the bottom wall part 1B. Although the case where it measured was shown, considering that there is some difficulty in fixation of covering 5 to the connection part (inclined part) of inner wall surface 2 of side wall 1A and inner wall 2 of bottom wall 1B. Alternatively, the side wall portion 1A and the bottom wall portion 1B may be covered with different covering bodies 5, and the amount of water leakage may be measured at each measurement location.

  Further, the pressure measurement method shown in the present embodiment may be applied to the first and second embodiments.

  In addition, this pressure measurement method is considered to be unsuitable for a measurement object having no strength, and therefore it is desirable to perform the measurement in consideration of the deterioration state of the measurement object and the presence or absence of a ground treatment.

  In addition, this invention is not restricted to Examples 1-3, The concrete structure of each component can be designed suitably.

DESCRIPTION OF SYMBOLS 1 Concrete block for waterways 2 Inner wall surface 3 Water supply gap 4 Water supply port 5 Covering body 6 Joint material 7 Pressure pump

Claims (4)

A method for measuring water leakage in a waterway formed by connecting and connecting a number of concrete blocks for waterways in a juxtaposed manner, wherein the inner wall surface of the concrete block for waterways is covered with the inner wall surface for water supply. A covering body provided with a water supply port capable of forming a gap is disposed, the covering body is fixed to the inner wall surface, the water supply gap is stopped, and the semi-cylindrical covering body is employed. The covering is disposed on the inner wall surface of the waterway concrete block and fixed by adhesion or pressure bonding, thereby forming the water supply gap covered by the cover, and the water supply gap that is stopped A method for measuring water leakage in a water channel, characterized by measuring the amount of water reduction in the water supply gap after water is supplied from a water supply port and left for a predetermined time. A method for measuring water leakage in a waterway formed by connecting and connecting a number of concrete blocks for waterways in a juxtaposed manner, wherein the inner wall surface of the concrete block for waterways is covered with the inner wall surface for water supply. A covering having a water supply opening capable of forming a gap is disposed, and the covering is fixed to the inner wall surface so that the water supply gap is stopped. Adopting this cover, with its center part slackened, both sides are bonded or crimped to the inner wall surface of the concrete block for waterway so that the center part of the cover and the concrete block for waterway are The water supply gap is formed between the inner wall surface, water is supplied to the stopped water supply gap from the water supply port and left for a predetermined time, and then the amount of water reduction in the water supply gap is measured. How to measure leaks in waterways .   A method for measuring water leakage in a waterway formed by connecting and connecting a number of concrete blocks for waterways in a juxtaposed manner, wherein the inner wall surface of the concrete block for waterways is covered with the inner wall surface for water supply. A covering body having a water supply opening capable of forming a gap is arranged so as to cover the joint material along the joint material interposed between the joints of the concrete block for waterways, and the covering body is fixed to the inner wall surface. Then, the water supply gap is set to a water stop state, water is supplied to the water supply gap from the water supply port through the water supply port and left for a predetermined time, and then the amount of water reduction in the water supply gap is measured. Water leakage measurement method. After supplying water to the water supply gap, the inside of the water supply gap is pressurized using a pressure pump, and an equal water pressure is applied to the inner wall surface of the waterway concrete block or the joint material adjacent to the water supply gap. The water leakage measurement method for a water channel according to any one of claims 1 to 3 , wherein the amount of water reduction in the gap for water supply is measured after being left in the pressurized state for a predetermined time.

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