CN215004884U

CN215004884U - Drilling constant head water injection tester

Info

Publication number: CN215004884U
Application number: CN202121356298.1U
Authority: CN
Inventors: 程守金
Original assignee: Individual
Current assignee: Linyi Water Conservancy Survey And Design Institute Of Shandong Province
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-12-03
Anticipated expiration: 2031-06-18

Abstract

The utility model provides a drilling constant head water injection tester, includes haplopore rubber buffer, flow bottle, support, intake pipe loose valve, outlet pipe and intake pipe, the flow bottle sets up on the support, the haplopore rubber buffer is sealed the bottleneck of flow bottle, the intake pipe stretches into in the flow bottle from the bottleneck of flow bottle, the lower extreme of flow bottle is provided with the delivery port, go out the water piping connection delivery port, the intake pipe loose valve is installed to the one end of intake pipe, the outlet pipe loose valve is installed to the one end of outlet pipe.

Description

Drilling constant head water injection tester

Technical Field

The utility model belongs to the technical field of hydraulic engineering survey equipment, concretely relates to drilling constant head water injection tester.

Background

In the geological survey of water conservancy engineering, an in-situ test for water permeability of a rock-soil body is known by frequently carrying out an in-situ water injection test and calculating the permeability coefficient of the rock-soil body according to test data. The method for carrying out the water injection test in the drill hole by combining drilling is a common method, and mainly comprises two methods, namely a normal water head water injection test of the drill hole and a falling water head water injection test of the drill hole.

The drilling head water injection test is suitable for silt, cohesive soil layers or rock-soil layers with smaller permeability coefficients below the underground water level. The drilling constant head water injection test is suitable for loam, silt, sandy soil and gravel layers with relatively large permeability or weathered and broken rock masses, fault broken zones and other rock masses with relatively high water permeability, which cannot be subjected to a water pressure test. Because the drilling head-reducing test is only suitable for the rock-soil body test below the underground water level, the test section above the underground water level is not suitable, the drilling constant head water injection test is widely used, the conventional drilling constant head water injection test generally needs to be carried out by a casing pipe, the water head is kept to an orifice, the injection flow is measured, the test result is limited by the water stopping effect at the bottom of the casing pipe, the test result is sometimes unsatisfactory, and the drilling needs to be changed in diameter after the casing pipe is carried out, so that the drilling is not beneficial to the next drilling, a test hole is often required to be specially drilled, and the time and the labor are wasted.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems, the utility model aims to provide a not lower sleeve pipe water injection tester, its simple structure, easy and simple to handle, reliability are high for drilling efficiency has had very big improvement.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a drilling constant head water injection tester, includes haplopore rubber buffer, flow bottle, support, intake pipe loose valve, outlet pipe and intake pipe, the flow bottle sets up on the support, the haplopore rubber buffer is sealed the bottleneck of flow bottle, the intake pipe stretches into in the flow bottle from the bottleneck of flow bottle, the lower extreme of flow bottle is provided with the delivery port, go out the water piping connection delivery port, the intake pipe loose valve is installed to the one end of intake pipe, the outlet pipe loose valve is installed to the one end of outlet pipe.

Preferably, a plurality of rubber connecting pipes are arranged on the water outlet pipe and the air inlet pipe.

The utility model discloses a technological effect and advantage: the support and the flow bottle are placed in the orifice, the water outlet pipe and the air inlet pipe are placed at a preset test position in the orifice, and the water outlet pipe and the air inlet pipe are connected through the rubber pipe, so that the disassembly is convenient. Injecting water into the drilling hole, the outlet pipe export is submerged to downthehole water level, to flow bottle water injection, open the outlet pipe loose valve, close the outlet pipe loose valve behind the air in the discharge water pipe, continue water injection to bottle water level in be higher than top scale mark, seal the bottleneck with the haplopore rubber buffer, close the intake pipe loose valve, open the outlet pipe loose valve simultaneously, increase the water injection in to the drilling hole, rise the downthehole surface of water to the intake pipe more than importing, stop downthehole water injection, open the intake pipe loose valve, it emits to have the bubble to observe the intake pipe export in the bottle, the surface of water descends to the scale mark and begins the experiment, measure the flow, satisfy and measurate after requiring, the experiment can terminate, calculate the osmotic coefficient on ground layer according to the experimental achievement. In actual operation, the flow bottle is suitable for large capacity, and the water outlet pipe is suitable for thick pipe diameter, so that the water supply capacity is improved, and the water leakage requirement is met. The device does not need to be specially put into a casing, and is convenient for drilling in the next step.

Drawings

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all references to up, down, left, right, front, back, inner and outer directions herein are to be interpreted as referring to up, down, left, right, front, back, inner and outer directions in the drawings to which the invention is applied, and all references are hereby incorporated herein by reference.

The utility model provides a drilling constant head water injection tester as shown in figure 1, including haplopore rubber buffer 1, flow bottle 2, support 3, intake pipe valve 4, outlet pipe valve 5, outlet pipe 6 and intake pipe 7, flow bottle 2 sets up on support 3, haplopore rubber buffer 1 is sealed the bottleneck of flow bottle 2, intake pipe 7 stretches into in flow bottle 2 from the bottleneck of flow bottle 2, the lower extreme of flow bottle 2 is provided with the delivery port, go out the water piping connection delivery port 6, intake pipe valve 4 is installed to the one end of intake pipe 7, outlet pipe valve 5 is installed to the one end of outlet pipe 6, be provided with several rubber connecting pipe 8 in outlet pipe 6 and the intake pipe 7.

Working principle, during test, the support 3 and the flow bottle 2 are placed in an orifice, the water outlet pipe 6 and the air inlet pipe 7 are placed at a preset test position in the orifice, the rubber pipe 8 is connected to the orifice and is connected with the water outlet pipe movable valve 5 and the air inlet pipe movable valve 4, water is injected into a drill hole, the water level in the hole submerges the outlet of the water outlet pipe 6, water is injected into the flow bottle, the water outlet pipe movable valve 5 is opened, the water outlet pipe movable valve 5 is closed after air in the water outlet pipe 6 is discharged, water is continuously injected until the water level in the bottle is higher than the top scale mark, the bottle opening is sealed by the single-hole rubber plug 1, the air inlet pipe movable valve 4 is closed, the water outlet pipe movable valve 5 is opened, if the water level in the bottle keeps unchanged, the sealing is good, the water is injected into the drill hole, the water level in the drill hole is raised above the inlet of the air inlet pipe 7, the water in the hole is stopped, the air inlet pipe movable valve 4 is opened, because of the vacuum principle in the bottle, the water level in the bottle is unchanged at the moment, when the water level in the drill hole is lowered below the inlet 7, it has the bubble to emerge to survey the export of intake pipe 7 in the bottle, the water level begins to descend in the flow bottle 2, outlet pipe 6 begins to go out water, flow bottle 2 begins to supply water, the water level rises to submerge the import of intake pipe 7 in the drilling, under the vacuum effect, flow bottle 2 stops supplying water, wait experimental section seepage and arouse that the water level descends to below the intake pipe import in the drilling, the air passes through intake pipe 7 and enters into flow bottle 2 in, flow bottle 2 begins to supply water, the water level remains at intake pipe 7 import department throughout in the drilling so repeatedly, the downthehole seepage water yield all is supplied with by in the bottle this moment, 2 scale marks of flow bottle begin to test, measure the flow, satisfy the requirement of measurationing, the experiment can terminate, calculate the osmotic coefficient of ground layer according to the experimental achievement.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a drilling constant head water injection tester, includes haplopore rubber buffer (1), flow bottle (2), support (3), intake pipe movable valve (4), outlet pipe movable valve (5), outlet pipe (6) and intake pipe (7), its characterized in that: flow bottle (2) set up on support (3), haplopore rubber buffer (1) is sealed the bottleneck of flow bottle (2), intake pipe (7) stretch into in flow bottle (2) from the bottleneck of flow bottle (2), the lower extreme of flow bottle (2) is provided with the delivery port, the delivery port is connected in outlet pipe (6), intake pipe valve (4) are installed to the one end of intake pipe (7), outlet pipe valve (5) are installed to the one end of outlet pipe (6).

2. The drilling constant head water injection tester as claimed in claim 1, wherein: and a plurality of rubber connecting pipes (8) are arranged on the water outlet pipe (6) and the air inlet pipe (7).