A single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage

Abstract

The present invention discloses a single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage, which comprises a test box device and a probe device. The probe device is connected to the test box device. The probe device includes a probe body, on which a water pressure gauge group and a probe top device are installed. The probe top device includes a probe top block and a guide cone. The probe top block is connected to the top of the probe body, and the guide cone is connected to the probe top block. The probe top block is provided with a top connector and a top adapter. The top connector is located at the end of the probe top block, and the top adapter is located on the circumferential surface of the probe top block. The water pressure gauge group includes a water pressure gauge in the probe cavity and a water pressure gauge in the measuring hole. The test box device includes a test box body, a test box cover and a reading instrument. The water pressure gauge in the probe cavity and the water pressure gauge in the measuring hole are respectively electrically connected to the reading instrument, and the data measured by the water pressure gauge in the probe cavity and the water pressure gauge in the measuring hole are displayed through the reading instrument.

Description

Technical Field

[0001] The present invention belongs to the technical field of geological exploration, and particularly relates to a single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage Background Technique

[0002] At present, during the exploration of deep formations, the pressuremeter test is one of the in-situ testing methods widely used in geotechnical engineering. A borehole is formed in the test formation using a drill pipe, and the pressuremeter is placed into the borehole. Pressure is applied to cause the pressuremeter to expand laterally. According to the test readings, a volume-pressure or stress-strain relationship curve of the borehole lateral expansion can be obtained, which can be used to estimate the bearing capacity of the foundation, determine the strength parameters, deformation parameters, and bedding coefficients of the soil, and estimate the foundation settlement, single-pile bearing capacity, and settlement.

[0003] Currently, there are three types of pressuremeter instruments: pre-bored type, self-boring type, and press-in type. The pre-bored type is mainly used in the market. The existing pressuremeter probe has a structure that results in high manufacturing, installation, and later maintenance costs and long time consumption. At the same time, the water level cannot be accurately measured during the exploration. Summary of the Invention

[0004] The object of the present invention is to solve the above problems and provide a single-chamber high-pressure pre-bored pressuremeter capable of accurately measuring the water level and simultaneously measuring the water level and seepage during the exploration.

[0005] To solve the above technical problems, the technical solution of the present invention is: A single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring the water level and seepage, comprising a test box device and a probe device. The probe device is connected to the test box device. The probe device includes a probe body. A water pressure gauge group and a probe top device are installed on the probe body. The probe top device includes a probe top block and a guide cone. The probe top block is connected to the top of the probe body, and the guide cone is connected to the probe top block. A top connector and a top adapter are provided on the probe top block. The top connector is located at the end of the probe top block, and the top adapter is located on the circumferential surface of the probe top block. The water pressure gauge group includes a water pressure gauge in the probe cavity and a water pressure gauge in the measuring hole. The water pressure gauge in the measuring hole is located at the bottom of the probe body, and the water pressure gauge in the probe cavity is located in the middle of the probe body. The test box device includes a test box body, a test box cover, and a readout instrument. The probe body is installed inside the test box body, the test box cover is located on the test box body, and the readout instrument is installed on the test box cover. The water pressure gauge in the probe cavity and the water pressure gauge in the measuring hole are respectively electrically connected to the readout instrument, and the data measured by the water pressure gauge in the probe cavity and the water pressure gauge in the measuring hole are displayed through the readout instrument.

[0006] Preferably, the probe top block is a hollow rotating body structure.

[0007] Preferably, the cross-section of the guide cone is a trapezoidal structure.

[0008] Preferably, the top connector is an NC1 1 / 2 - 6 drill pipe connector, and the top adapter is an NC1 1 / 2 - 6 drill to M36 adapter.

[0009] Preferably, a fixing member of the test box main body is installed inside the test box main body. The fixing member of the test box main body is connected to the probe main body and is used to fix the probe main body.

[0010] Preferably, test box rollers are installed at the bottom of the test box main body.

[0011] Preferably, the test box cover is rotatably connected to the test box main body. A support member for the test box cover is provided on the test box main body. The support member for the test box cover has an arc-shaped structure and is used to support the test box cover.

[0012] Preferably, a door of the test box main body is installed on the test box main body. The door of the test box main body is rotatably connected to the test box main body.

[0013] The beneficial effects of the present invention are as follows: The single-chamber high-pressure pre-bored pressuremeter provided by the present invention, which can measure water level and seepage simultaneously, can accurately measure the water level during the exploration according to the water pressure gauges arranged in the probe cavity and the water pressure gauges in the measuring holes. At the same time, it has a simple structure, convenient operation and low manufacturing cost. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of a single-chamber high-pressure pre-bored pressuremeter of the present invention that can measure water level and seepage simultaneously;

[0015] Figure 2 is a schematic structural diagram of the probe device of the present invention;

[0016] Figure 3 is a schematic side view of the present invention;

[0017] Figure 4 is a schematic diagram of the structure with the test box cover opened of the present invention.

[0018] Description of the reference numerals: 1. Test box device; 2. Probe device; 10. Test box main body; 11. Test box cover; 12. Reading instrument; 13. Fixing member of the test box main body; 14. Test box rollers; 15. Support member for the test box cover; 16. Door of the test box main body; 21. Water pressure gauge group; 22. Probe top device; 211. Water pressure gauge in the probe cavity; 212. Water pressure gauge in the measuring hole; 221. Probe top block; 222. Guide cone; 223. Top connector; 224. Top adapter. Detailed Embodiments

[0019] The following further describes the present invention in conjunction with the drawings and specific embodiments:

[0020] As Figures 1 to 4 shown, a single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage provided by the present invention includes a test box device 1 and a probe device 2. The probe device 2 is connected to the test box device 1. The probe device 2 includes a probe body. A water pressure gauge group 21 and a probe top device 22 are installed on the probe body. The probe top device 22 includes a probe top block 221 and a guide cone 222. The probe top block 221 is connected to the top of the probe body, and the guide cone 222 is connected to the probe top block 221. A top connector 223 and a top adapter 224 are provided on the probe top block 221. The top connector 223 is located at the end of the probe top block 221, and the top adapter 224 is located on the circumferential surface of the probe top block 221. The water pressure gauge group 21 includes a water pressure gauge 211 in the probe cavity and a water pressure gauge 212 in the measuring hole. The water pressure gauge 212 in the measuring hole is located at the bottom of the probe body, and the water pressure gauge 211 in the probe cavity is located in the middle of the probe body. The test box device 1 includes a test box main body 10, a test box cover 11 and a reading instrument 12. The probe body is installed inside the test box main body 10. The test box cover 11 is located on the test box main body 10, and the reading instrument 12 is installed on the test box cover 11. The water pressure gauge 211 in the probe cavity and the water pressure gauge 212 in the measuring hole are respectively electrically connected to the reading instrument 12. The data measured by the water pressure gauge 211 in the probe cavity and the water pressure gauge 212 in the measuring hole are displayed through the reading instrument 12.

[0021] In this embodiment, both the water pressure gauge 211 in the probe cavity and the water pressure gauge 212 in the measuring hole are existing mature technology devices for measuring data related to water pressure changes. The data of the water pressure gauge 211 in the probe cavity are two and symmetrically distributed inside the probe body. The probe body is in a cylindrical structure. A probe body hole is opened in the middle of the probe body. The water pressure gauge 211 in the probe cavity is located in the middle of the probe body hole, and the water pressure gauge 212 in the measuring hole is located at the bottom of the probe body hole for measuring corresponding water pressure data.

[0022] The probe top block 221 is a hollow rotating body structure. The bottom of the probe top block 221 extends deep into the probe body for fixation. Through the top connector 223 and the top adapter 224 on the probe top block 221, the probe body is connected to external equipment, thereby increasing the usage range of the probe body and also fixing the probe body.

[0023] The cross-section of the guide cone 222 is a trapezoidal structure. The guide cone 222 is annularly distributed between the probe top block 221 and the top of the probe body.

[0024] The top connector 223 is an NC1 1 / 2-6 drill pipe connector, and the top adapter 224 is an NC1 1 / 2 - 6 thread turning M36 connector. During actual use, corresponding models can also be adopted according to design requirements to increase the practicality of the present invention.

[0025] Inside the test box main body 10, a test box main body fixing member 13 is installed. The test box main body fixing member 13 is connected to the probe main body and is used to fix the probe main body. The test box main body fixing member 13 is an open fixing device for fixing the probe main body. The test box main body fixing member 13 is an existing fixing device, and any device that can fix the probe main body can be adopted.

[0026] In this embodiment, the probe main body is an existing mature technology device. By means of the water pressure gauge 211 inside the probe cavity and the water pressure gauge 212 inside the measuring hole arranged inside the probe main body, during the use of the probe main body, the water level contacted by the probe main body can be accurately measured through the pressure difference data of the water pressure gauge 211 inside the probe cavity and the water pressure gauge 212 inside the measuring hole respectively.

[0027] The data measured by the water pressure gauge 211 inside the probe cavity and the water pressure gauge 212 inside the measuring hole are transmitted to the reading instrument 12 in real time through wires for display, so that the operator can grasp the measurement data in real time. The reading instrument 12 is an existing mature technology device and is used to display the data measured by the water pressure gauge 211 inside the probe cavity and the water pressure gauge 212 inside the measuring hole.

[0028] At the bottom of the test box main body 10, test box rollers 14 are installed. In this embodiment, the number of test box rollers 14 is four. The test box rollers 14 can be set as a universal wheel structure, which can facilitate the operator to move the equipment of the present invention.

[0029] On the test box main body 10, a test box main body handle is also installed. The number of test box main body handles is two and they are symmetrically distributed on the test box main body 10. The structure of the test box main body handle is in a "U" shape, which is convenient for the operator to carry.

[0030] The test box cover 11 is rotatably connected to the test box main body 10. On the test box main body 10, a test box cover support member 15 is provided. The test box cover support member 15 is in an arc-shaped structure. The test box cover support member 15 is used to support the test box cover 11, thereby ensuring the safety of the test box cover 11.

[0031] On the test box main body 10, a test box main body door 16 is installed. The test box main body door 16 is rotatably connected to the test box main body 10. The probe device 2 is placed inside the test box main body 10. By opening the test box main body door 16, the probe device 2 can be taken out, which is convenient for the operator to carry out relevant work. After the probe device 2 is used, open the test box main body door 16 to place the probe device 2.

[0032] During the use of the present invention, the probe body is taken out. Before the probe body is lowered, the probe body is pre-filled with water, i.e., there is a certain water pressure. During the process of gradually lowering the probe body, after encountering the initial water level, the water pressure gauge 211 in the probe cavity and the water pressure gauge 212 in the measuring hole can know the depth of the initial water level by measuring the change in water pressure inside and outside the probe, and measure the change in water pressure at different depths during the test, and calculate the permeability coefficient of the test layer according to the water level change during the test, so as to obtain relevant data for subsequent related operations.

[0033] Those of ordinary skill in the art will realize that the embodiments described herein are to assist the reader in understanding the principles of the present invention and should be understood that the scope of protection of the present invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific deformations and combinations that do not depart from the essence of the present invention based on these technical revelations disclosed in the present invention, and these deformations and combinations are still within the scope of protection of the present invention.

Claims

1. A single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage, characterized in that: It includes a test chamber device (1) and a probe device (2). The probe device (2) is connected to the test chamber device (1). The probe device (2) includes a probe body, on which a water pressure gauge group (21) and a probe top device (22) are installed. The probe top device (22) includes a probe top block (221) and a guiding cone (222). The probe top block (221) is connected to the top of the probe body, and the guiding cone (222) is connected to the probe top block (221). On the probe top block (221), there are a top connector (223) and a top adapter (224). The top connector (223) is located at the end of the probe top block (221), and the top adapter (224) is located on the circumferential surface of the probe top block (221). The water pressure gauge group (21) includes a water pressure gauge in the probe cavity (211) and a water pressure gauge in the measuring hole (212). The water pressure gauge in the measuring hole (212) is located at the bottom of the probe body, and the water pressure gauge in the probe cavity (211) is located in the middle of the probe body. The test chamber device (1) includes a test chamber main body (10), a test chamber cover (11), and a readout instrument (12). The probe body is installed inside the test chamber main body (10). The test chamber cover (11) is located on the test chamber main body (10), and the readout instrument (12) is installed on the test chamber cover (11). The water pressure gauge in the probe cavity (211) and the water pressure gauge in the measuring hole (212) are respectively electrically connected to the readout instrument (12). The data measured by the water pressure gauge in the probe cavity (211) and the water pressure gauge in the measuring hole (212) are displayed through the readout instrument (12). There is also a test chamber main body handle installed on the test chamber main body (10). The number of test chamber main body handles is two and they are symmetrically distributed on the test chamber main body (10). The structure of the test chamber main body handle is in a "U" shape, which is convenient for the operator to carry. The number of water pressure gauges in the probe cavity (211) is two and they are symmetrically distributed inside the probe body. The probe body is in a cylindrical structure, and there is a probe body hole in the middle of the probe body. The water pressure gauge in the probe cavity (211) is located in the middle of the probe body hole, and the water pressure gauge in the measuring hole (212) is located at the bottom of the probe body hole, for measuring the corresponding water pressure data.

2. The single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage according to claim 1, wherein: The probe top block (221) is a hollow rotary body structure.

3. The single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage according to claim 1, characterized in that: The cross-section of the guiding cone (222) is in a trapezoidal structure.

4. The single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage according to claim 1, wherein: The top connector (223) is an NC1 1 / 2-6 drill pipe connector, and the top adapter (224) is an NC1 1 / 2-6 drill to M36 adapter.

5. A single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage according to claim 1, characterized in that: There is a test chamber main body fixing part (13) installed inside the test chamber main body (10). The test chamber main body fixing part (13) is connected to the probe body, for fixing the probe body.

6. A single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage according to claim 1, characterized in that: There are test chamber rollers (14) installed at the bottom of the test chamber main body (10).

7. A single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage according to claim 1, characterized in that: The test chamber cover (11) is rotatably connected to the test chamber main body (10). There is a test chamber cover support part (15) on the test chamber main body (10). The test chamber cover support part (15) is in an arc-shaped structure, and the test chamber cover support part (15) is used to support the test chamber cover (11).

8. A single-chamber high-pressure pre-bored pressuremeter capable of simultaneously measuring water level and seepage according to claim 1, characterized in that: There is a test chamber main body door (16) installed on the test chamber main body (10). The test chamber main body door (16) is rotatably connected to the test chamber main body (10).

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