CN102797247A - Double-plug water stopper locating device for deep hole water pressure test - Google Patents

Abstract

The invention relates to a positioning device for a double-plug waterstop in a deep hole pressurized water test. The difference is that it includes an upper waterstop and a lower waterstop, and a drill pipe connection, the upper water stop and the lower water stop both include a hollow guide rod, an upper handle, a water stop rubber plug, a middle handle, a water guiding flower tube, and a lower handle. The upper end of the hollow guide rod is provided with an upper handle, and the hollow The circumference of the guide rod is set with a water-stop rubber plug and a middle handle from top to bottom. The middle joint is connected to the upper end of the water guide flower tube, the lower end of the water guide flower tube is connected to the lower handle, and the lower end of the hollow guide rod extends to the water guide flower tube. Inside, the circumference of the water guide flower tube is densely covered with a plurality of water outlet holes, and the lower end of the hollow guide rod of the lower water stop is also provided with a water stop steel ball. The invention can perform water pressure test under the condition of completing drilling at one time without backfilling the hole section, and can obtain segmental and continuous water pressure test result data of the whole hole.

Description

Positioning device for double plug water stop in deep hole pressure water test

technical field

The present invention relates to mine hydrogeological survey and curtain grouting hole pressure water test positioning technology, especially a deep hole pressure water test dual Plug water stop positioning device.

Background technique

In mine hydrogeological survey and curtain grouting project, borehole pressure water test is an important work content. In order to more accurately divide the aquifer and water-resisting layer, it is required to carry out the pressure water test in sections from top to bottom or bottom to top in the borehole. The original technical scheme is generally to perform a water pressure test for a section during the drilling process, and then perform a water pressure test after the footage is drilled, or to do a water pressure test for a section of the bottom of the hole after the drilling is completed, and then use Use granular soil (or cement slurry) to backfill the hole section that has undergone the pressure water test at the bottom, and repeat the pressure water test in this way, and drill the hole backfill until the end of the hole. According to this scheme, the construction period is long and the cost is high, especially for the pressure water test. After a drilling is completed, the time and cost of the pressure water test are higher than the drilling time and cost. In desperation, the number of pressure water test stages is often reduced. Or only one full-hole comprehensive water pressure test is carried out, and the result data of the whole-hole segmented and continuous water pressure test is not obtained, so the aquifer and water-resisting layer cannot be more accurately divided.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the prior art and provide a positioning device for a double-plug waterstop for deep hole pressure water testing, which can perform a pressure water test without backfilling the hole section once the drilling is completed, and can Obtain the segmental and continuous pressure water test results data of the whole hole.

In order to solve the above technical problems, the technical solution of the present invention is: a positioning device for a double-plug water stop in a deep hole pressurized water test, the difference is that it includes an upper water stop and a lower water stop, and the upper water stop , and the lower water stop are connected by drill pipes, and both the upper water stop and the lower water stop include a hollow guide rod, an upper handle, a water stop rubber plug, a middle handle, a water guiding flower tube, and a lower handle, and the hollow The upper end of the guide rod is provided with an upper handle, and the circumference of the hollow guide rod is sequentially set with a water-stop rubber plug and a middle handle from top to bottom. The lower end of the hollow guide rod extends to the inside of the water-guiding flower tube, and the circumference of the water-guiding flower tube is densely covered with a plurality of water outlet holes. The lower end of the hollow guide rod of the lower water stop is also provided with a water-stop steel ball. The upper handle is used to connect the upper drill pipe, and the lower handle of the upper water stop is used to connect the lower drill pipe.

According to the above solution, the lower end of the hollow guide rod of the lower water stop is provided with a positioning lock nut, and the water stop steel ball is arranged in the hollow guide rod body above the positioning lock nut.

Compared with the prior art, the beneficial features of the present invention are as follows:

1) The double-plug waterstop positioning device for deep hole pressurized water test of the present invention has two upper waterstops and lower waterstops with similar structures. The upper handle of the water stop is used to connect the upper drill pipe, and the lower handle of the upper water stop is used to connect the lower drill pipe. Through the joint action of the pressure of the upper drill pipe, the top support of the lower drill pipe and the inner slideway of the rubber plug, The inner rubber plugs of the upper water stop and the lower water stop bulge to stop the water. When the water pressed into the ground from the hole through the drill pipe reaches the lower water stop, the water that is pressed into the ground from the drill pipe is blocked by the water stop steel ball. The water can only flow out from the water-guiding flower tube, and the water pressure test is carried out on the rock formation section between the upper water stop and the lower water stop;

2) The double-plug waterstop positioning device for deep hole pressure water test can realize continuous segmented water pressure test of the whole hole without drilling backfill;

3) The positioning device of the double plug water stop for deep hole pressure water test is extremely convenient to install, which greatly shortens the time for installing the water stop and reduces the cost of the water pressure test.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Among them: 1-upper handle, 2-hollow guide rod, 3-washer, 4-waterstop rubber plug, 5-middle handle, 6-water guiding flower tube, 7-locating lock nut, 8-lower handle, 9-drill Rod, 10-water stop steel ball, 11-top water stop, 12-bottom water stop.

Detailed ways

The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

Please refer to Fig. 1 , the double-plug water stop positioning device for deep hole pressurized water test according to the embodiment of the present invention, which includes an upper water stop 11 and a lower water stop 12, the upper water stop 11 and the lower water stop 12 The upper water stop 11 and the lower water stop 12 both include a hollow guide rod 2, an upper handle 1, a water stop rubber plug 4, a middle handle 5, a water guide flower tube 6, and a lower handle 8. The upper end of the hollow guide rod 2 is provided with an upper handle 1, and the circumference of the hollow guide rod 2 is sequentially set with a water-stop rubber plug 4 and a middle handle 5 from top to bottom. The lower end of the water-guiding flower tube 6 is connected to the lower handle 8, the lower end of the hollow guide rod 2 extends to the inside of the water-guiding flower tube 6, and the circumference of the water-guiding flower tube 6 is densely covered with a plurality of water outlet holes, and the hollow of the lower water stop 12 The lower end of the guide rod 2 is also provided with a water-stop steel ball 10; the upper handle 1 of the upper water stop 11 is used to connect the upper drill pipe, and the lower handle 8 of the upper water stop 12 is used to connect the lower drill pipe.

Specifically, the lower end of the hollow guide rod 2 of the lower water stop 12 is provided with a positioning lock nut 7 , and the water-stop steel ball 10 is arranged in the body of the hollow guide rod 2 on the upper part of the positioning lock nut 7 .

Preferably, the number of water-stop rubber plugs 4 in the upper water-stop device 11 and the lower water-stop device 12 is 3-6 respectively, and gaskets 3 are arranged between adjacent water-stop rubber plugs.

Curtain grouting in Dahongshan, Zhaojiawan, Daye Iron Mine, etc., and hydrogeological survey practice have proved that the top-down or bottom-up continuous grouting can be completed in 3 to 4 days for a 500m deep hole. Compared with the original scheme, the test tasks of section water stop and continuous water pressure have obvious advantages. By adjusting the length of the upper and lower drill pipes in the embodiment of the present invention, the water stop can be continuously segmented from top to bottom or bottom to top, and the water pressure test can be carried out continuously. The device is very convenient to install, greatly shortens the time for installing the water stop, and does not need to backfill the drilled hole, reduces the cost of the water pressure test, and truly realizes the purpose of the continuous segmented water pressure test of the whole hole.

The above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, some simple deduction or substitutions can be made without departing from the concept of the present invention, which should be deemed to belong to the protection scope of the present invention.

Claims (2)

1. two plug water-stop positioners of deep hole packer permeability test; It is characterized in that: it comprises top water-stop, bottom water-stop; Connect through drilling rod between said top water-stop, the bottom water-stop, said top water-stop, bottom water-stop include hollow guide rod, go up catcher, sealing plug, middle catcher, water guide floral tube, take over down, and the upper end of said hollow guide rod is provided with catcher; The perimembranous of hollow guide rod is set with sealing plug, middle catcher from top to bottom successively; Center tap is connected with the upper end of water guide floral tube, and the lower end of water guide floral tube is connected with following catcher, and the lower end of hollow guide rod extends to the inside of water guide floral tube; The perimembranous of water guide floral tube is densely covered with a plurality of weep holes; The hollow lower end of the guide rod of said bottom water-stop also is provided with the sealing steel ball, and the catcher of going up of top water-stop is used to connect kelly bar, and the following catcher of top water-stop is used to connect kelly bar down.

2. the two plug water-stop positioners of deep hole packer permeability test as claimed in claim 1; It is characterized in that: the hollow lower end of the guide rod of said bottom water-stop is provided with the positioning and locking nut, and said sealing steel ball is arranged in the hollow guide rod body of rod on positioning and locking nut top.

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