CN216588450U

CN216588450U - Mud dado drilling system of detectable ground water level

Info

Publication number: CN216588450U
Application number: CN202122545384.3U
Authority: CN
Inventors: 沈振; 蔡冠军; 孟轲荆
Original assignee: Beijing Jingneng Geological Engineering Co ltd
Current assignee: Beijing Jingneng Geological Engineering Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-05-24
Anticipated expiration: 2031-10-21

Abstract

The utility model provides a mud dado drilling system capable of detecting underground water level, which comprises: a drilling rig comprising a drilling assembly; the drilling assembly comprises a drill rod with a hollow structure; the mud conveying system comprises a mud container and a circulating conveying pipeline, and the circulating conveying pipeline is communicated with the mud container and the drill rod; and the consistency testing device is connected with the slurry container and is used for monitoring the consistency of the slurry in the slurry container in real time. According to the mud retaining wall drilling system, the consistency change of mud in a mud container is monitored in real time by additionally arranging the consistency testing device, so that whether the underground water is drilled or not is predicted, and the underground water level burial depth is accurately judged by measuring the drilling depth.

Description

Mud dado drilling system of detectable ground water level

Technical Field

The utility model relates to the technical field of geotechnical engineering, in particular to a mud retaining wall drilling system capable of detecting underground water level.

Background

In the course of geotechnical geological surveying, drilling is an indispensable task. However, during drilling, groundwater is often encountered, and therefore, it is an important task in the field to be able to detect the groundwater level while drilling. For geotechnical engineering drilling of the fourth series of loose soil layers, two processes of mud retaining wall drilling and casing retaining wall drilling are generally adopted. When the slurry wall protection is adopted for drilling, the slurry is a flushing liquid injected into a drill hole in the drilling process. The slurry has three main functions: the first point is that the mud can protect the hole wall, fill up the gap between the hole walls and ensure the normal drilling of the drill bit; the second point is that the slurry can play a role in lubrication, and the slurry can greatly reduce the friction force between the drill bit and the rock mass and reduce the abrasion of the drill bit; the third point is that the mud which flows circularly absorbs the heat generated by the drill bit due to friction, so as to cool the drill bit.

However, the observation of the groundwater level is seriously influenced by the existence of the slurry, and the judgment of the groundwater level by workers is influenced by the mixture of the flowing slurry and the groundwater. Therefore, the underground water level can be accurately observed under the drilling of the slurry retaining wall, which becomes a difficult problem in the industry.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model mainly aims to provide the mud retaining wall drilling system capable of detecting the underground water level.

To achieve the above objects, the present invention provides a mud dado drilling system that can detect the groundwater level.

The mud dado drilling system capable of detecting the underground water level comprises:

a drilling rig comprising a drilling assembly; the drilling assembly comprises a drill rod with a hollow structure;

the mud conveying system comprises a mud container and a circulating conveying pipeline, and the circulating conveying pipeline is communicated with the mud container and the drill rod;

and the consistency testing device is connected with the slurry container and is used for monitoring the consistency of the slurry in the slurry container in real time.

Further, the consistency testing device is provided with an induction probe inserted into the mud container and used for monitoring the consistency of the mud in the mud container.

Further, the consistency testing device is a consistency sensor.

Further, the drilling assembly further comprises a drill bit and a core tube which are both of hollow structures, and two ends of the core tube are respectively connected with the drill bit and the drill rod.

Further, the circulation conveying pipeline comprises an input pipeline and an output pipeline, and the input pipeline and the output pipeline are respectively communicated with the mud container and the drill rod.

Furthermore, the slurry conveying system further comprises a slurry circulating pump, and the slurry circulating pump is connected with the input pipeline.

The utility model utilizes the consistency measuring device to monitor the consistency of the slurry in the slurry container in real time, records in time when the consistency of the slurry is found to be obviously thin, stops drilling to pump out the slurry in the drill hole, then carries out dry drilling with proper depth to observe the underground water level, solves the technical problem that the slurry retaining wall drill hole can not observe underground water, and improves the hydrogeological exploration precision of engineering geological exploration.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a mud dado drilling system capable of detecting a groundwater level according to an embodiment of the utility model.

In the figure:

1. a drilling machine; 2. a slurry container; 3. an input pipeline; 4. an output pipeline; 5. a slurry circulating pump; 6. a consistency testing device; 7. an inductive probe;

11. a drill bit; 12. a core barrel; 13. and (5) drilling a rod.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The utility model utilizes the characteristic that the mud is obviously diluted and thinned by the underground water after the drilling meets the underground water in the drilling process, utilizes the consistency testing device 6 to monitor the consistency of the mud in the mud container 2 in real time, when the consistency of the mud is found to be obviously thinned, the consistency value is generally reduced by more than 30 percent compared with the original value, the recording is carried out in time, the drilling is stopped, the mud in the drill hole is pumped out, the proper depth is drilled in a dry mode, the detailed observation of the underground water level is carried out, and the technical problem that the underground water cannot be observed by the mud retaining wall drill hole is solved.

As shown in fig. 1, the mud dado drilling system capable of detecting the ground water level in the utility model comprises a drilling machine 1, wherein the drilling machine 1 comprises a drilling assembly, wherein the drilling assembly comprises a drill rod 13 with a hollow structure; the mud retaining wall drilling system capable of detecting the underground water level further comprises a mud conveying system, wherein the mud conveying system comprises a mud container 2 and a circulating conveying pipeline, and the circulating conveying pipeline is communicated with the mud container 2 and a drill rod 13; the mud dado drilling system capable of detecting the underground water level further comprises a consistency testing device 6, wherein the consistency testing device 6 is connected with the mud container 2 and is used for monitoring the consistency change of mud in the mud container 2 in real time.

In the above described embodiment, the drilling assembly is responsible for drilling, the mud delivery system is responsible for drawing mud from the mud container 2 into the drill pipe 13, i.e. into the borehole, and the consistency testing device 6 is used to monitor the consistency of the mud in the mud container 2 in real time.

As shown in fig. 1, the consistency testing apparatus 6 has an inductive probe 7 inserted into the slurry tank 2, the inductive probe 7 being used to monitor the consistency of the slurry in the slurry tank 2.

In the present invention, the consistency testing device 6 may be a consistency sensor.

As shown in fig. 1, the drilling assembly further includes a drill bit 11 and a core barrel 12, both of which are hollow structures, wherein both ends of the core barrel 12 are connected to the drill bit 11 and the drill rod 13, respectively.

As shown in fig. 1, the circulation line comprises an input line 3 and an output line 4, and the input line 3 and the output line 4 are respectively communicated with the mud tank 2 and the drill pipe 13.

As shown in fig. 1, the slurry delivery system further comprises a slurry circulation pump 5, which slurry circulation pump 5 is connected to the inlet line 3.

The flow of using the mud dado drilling system capable of detecting the ground water level in the present invention will be described below.

1. Starting the drilling machine 1, and drilling the drill bit 11 into the soil layer to form a drill hole;

2. starting a slurry circulating pump 5, sucking the slurry in the slurry container 2 into the drill hole and circulating the slurry back to the slurry container 2 under certain pressure;

3. and an induction probe 7 of the consistency testing device 6 extends into the slurry container 2 to monitor the consistency of the slurry in the slurry container 2 in real time. The inductive probe 7 is preferably arranged close to one end of the slurry container 2, where the slurry in the drill hole flows back, so that when the slurry consistency becomes obviously thin, the underground water exists, the slurry in the drill hole is pumped out, and the underground water is observed in time after dry drilling.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A mud dado drilling system capable of detecting a water table, comprising:

a drilling rig including a drilling assembly; the drilling assembly comprises a drill rod with a hollow structure;

2. The mud dado drilling system capable of detecting the level of groundwater of claim 1, wherein the consistency testing apparatus has an inductive probe inserted into the mud container for monitoring the consistency of the mud in the mud container.

3. The mud dado drilling system of claim 1 or 2, wherein the consistency testing device is a consistency sensor.

4. The mud dado drilling system capable of detecting the groundwater level as claimed in claim 1, wherein the drilling assembly further comprises a drill bit and a core barrel both having a hollow structure, wherein two ends of the core barrel are respectively connected with the drill bit and the drill rod.

5. The mudwall drilling system capable of detecting the water table according to claim 1, characterized in that the circulation line comprises an input line and an output line, which are respectively communicated with the mud container and the drill pipe.

6. The mud dado drilling system capable of detecting the water table of claim 5, wherein the mud delivery system further comprises a mud circulation pump connected to the input line.