CN215256164U - Device for monitoring formation change of drilling machine in drilling process - Google Patents

Abstract

The utility model provides a device for monitoring stratum change of a drilling machine in the drilling process, which comprises at least two springs with the same length and performance index and a tension sensor arranged at the end part of each spring, a data terminal for recording and processing the spring tension data measured by the tension sensor, a service end for receiving the spring tension data recorded by the data terminal and reserving as a record, matching with the corresponding stratum category by converting the continuous data into a mechanical change curve, the slope of the mechanical change curve can effectively represent the drilling speed of strata at different depths to determine stratum attributes, the slope change of the mechanical change curve can effectively determine the depth of a rock-soil interface, spring tension data is sent to a server side in time for backup, the problem of counterfeiting of core sample placement of operators can be effectively supervised, and the authenticity and the accuracy of a survey result are ensured.

Description

Device for monitoring formation change of drilling machine in drilling process

Technical Field

The utility model relates to a drilling engineering field, in particular to device that monitoring rig changes at probing in-process stratum.

Background

At present, human engineering structures are still built on the ground surface and exist depending on the reaction force of ground surface geotechnical layers, and the bearing capacity of foundation foundations, such as roads, bridges, houses, dams, wharfs and the like, is the primary and necessary condition for the existence of the human engineering structures.

The basement layer under the building foundation is a complex, uneven and variable multi-element assembly, so the aim of geological exploration is to find out the geological condition in a certain depth under the area where the building structure is located. The geological exploration means are various, including geological drilling machine drilling, manual excavation, engineering physical exploration and the like, and the most common exploration method in China is geological drilling machine drilling and rock core sample extraction vertical to the earth surface.

The geological drilling machine has the advantages of intuition, easy backtracking, strong experimenting performance, low economic cost, simple and convenient operation and the like, and particularly has obvious advantages in projects with simple stratums, small drilling depth and unsmooth progress requirement. However, in real work, the development of most of the stratums is extremely irregular and complex, such as coastal and river areas containing multiple stages of silt, weak interbedded and multiple-development rock formations with strong structural influence or metamorphism, invaded rock mass areas containing boulders, beaded karst or goaf development areas and the like.

The drilling work is carried out in the complex stratum region, not only the accurate layering depth recording and the rock core placing sequence are required, but also the abnormal conditions in the drilling process are observed and recorded, and the authenticity and the accuracy of the exploration result can be guaranteed. However, operators of geological drilling rigs in China generally do not have the required technical level and responsibility and the corresponding engineering and geological knowledge because of low cultural level and lack of standard training, and the inquiry and record lookup of field survey technicians are not enough to find the mutation or abnormal phenomenon of the stratum. Meanwhile, due to low-price malignant competition, schedule-arriving and other artificial reasons, core sample placement and counterfeiting, random rock-soil surface modification and other phenomena commonly exist in the geological drilling industry, and great difficulty and obstacle are brought to determining the lithology of the stratum of the work area and judging the change of the stratum of the work area.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device that monitoring rig changes in probing in-process stratum aims at can in time take notes the sudden change or the anomaly in probing in-process stratum, carries out discriminant analysis to the ground layer classification simultaneously, avoids appearing operating personnel core appearance and puts the condition of making a fake.

The above object is achieved by the following technical solutions.

A device for monitoring stratum changes of a drilling machine in a drilling process is characterized by comprising at least two springs with the same length and performance indexes, a fixer for fixing the springs on the drilling machine, a tension sensor arranged at the end part of each spring, a data terminal for recording and processing spring tension data measured by the tension sensor, and a service end for receiving the spring tension data recorded by the data terminal and reserving the spring tension data as a record; the springs are parallel to a drill string of the drilling machine and are rotationally and symmetrically distributed around the drill string; the top end of the spring is fixed on a water faucet of the drilling machine through a fixer, and the bottom end of the spring is fixed on the top of a hydraulic system of the drilling machine through the fixer; the spring is in tension before each drill-in cycle begins.

The apparatus for monitoring formation changes during drilling of a drilling rig may be modified as follows.

The length of the spring is 1.5-2.5 meters, and the ultimate elastic deformation stretching amount is less than 4 meters.

The spring outside parcel has the protective sheath.

The data terminal comprises the following modules:

the data storage module is used for receiving and storing spring tension data measured by the tension sensor so as to record continuous data of the change of the tension applied to the spring along with time;

and the data transmission module is used for directly sending the spring tension data to a server for record.

And the data terminal and the server are respectively provided with a data processing module for processing the continuous data in the data storage module, drawing a mechanical change curve, connecting and fitting a plurality of spring tension data curves of drilling for the next time, and matching the mechanical change curve with the corresponding stratum type.

And the data terminal and the server are respectively provided with a human-computer interaction module for displaying various data information, charts, data comparison and abnormal prompts according to requirements.

Above-mentioned utility model, possess following advantage:

the continuous data are converted into mechanical change curves to be matched with corresponding stratum types, namely the slope of the mechanical change curves can effectively represent the drilling speed of strata with different depths to determine stratum attributes, the slope change of the mechanical change curves can effectively determine the depth of a rock-soil interface, the spring tension data are timely sent to a server to be backed up, the problem of counterfeiting of core sample placement of operators can be effectively supervised, and the authenticity and accuracy of a survey result are guaranteed.

Drawings

FIG. 1 is a schematic structural view of a device for monitoring formation changes of a drilling machine during drilling according to the present invention, which is mounted on the drilling machine;

fig. 2 is a block diagram of a system structure of the data terminal and the server;

FIG. 3 is a graph of spring tension F as a function of time t;

FIG. 4 is a graph of spring elongation H versus time t;

wherein: 1. a drilling machine; 101. a faucet; 102. the top of the hydraulic system; 103. a drill string; 2. a spring; 3. a holder; 4. a tension sensor; 5. and (6) a protective sleeve.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1 to 2, the utility model provides a device for monitoring formation change of a drilling machine in a drilling process, which comprises two springs 2 with the same length and performance indexes, a fixer 3 for fixing the spring 2 on the drilling machine 1, a tension sensor 4 arranged at the end part of each spring 2, wherein the tension sensor 4 is positioned between the end part of the spring 2 and the fixer 3, a data terminal for recording and processing tension data of the spring 2 measured by the tension sensor 4, and a service end for receiving the tension data of the spring 2 recorded by the data terminal and reserving the tension data as a record; the spring 2 is parallel to the drill string 103 of the drilling machine 1 and is rotationally symmetrically distributed around the drill string 103; the top end of the spring 2 is fixed on a water faucet 101 of the drilling machine 1 through a fixer 3, and the bottom end of the spring is fixed on the top 102 of a hydraulic system of the drilling machine 1 through the fixer 3; before the start of each drill-in cycle, the spring 2 is in tension.

Specifically, the length of the spring 2 is 1.5-2.5 meters, and the elastic deformation limit stretching amount is less than 4 meters. Because the flexible volume of spring 2 overlength for the pulling force scope of spring 2 changes bigger, is difficult to the pulling force data that resets force sensor 4, so through the experiment, the length of the spring 2 of selecting is optimum to be 4 meters, and elastic deformation limit elongation is less than 4 meters.

Specifically, the spring 2 is externally wrapped with a protective sleeve 5. The influence of the spring 2 on the elastic performance of the spring 2 due to the corrosion of the external environment is avoided.

As shown in fig. 2, the data terminal includes a data storage module for receiving and storing the tension data of the spring 2 measured by the tension sensor 4, so as to record the continuous data of the tension applied to the spring 2 along with the time variation; the system also comprises a data transmission module for directly sending the tension data of the spring 2 to a server for recording

And the data terminal and the server are respectively provided with a data processing module for processing continuous data in the data storage module, the data processing module is used for connecting and fitting a plurality of spring 2 tension data curves of the drilling of the next time by drawing a mechanical change curve, and meanwhile, the mechanical change curve is matched with the corresponding stratum type. The data terminal and the server are both provided with a human-computer interaction module for displaying various data information, charts, data comparison and abnormal prompts according to needs.

The device for monitoring the formation change of the drilling machine in the drilling process comprises the following steps:

step 101, using the device for monitoring stratum change of the drilling machine in the drilling process, when the drilling machine 1 starts the first drilling return, raising the drill string 103 to the highest, opening the mechanical sensors at two ends of the spring 2, and collecting tension data of the spring 2;

102, the drilling machine 1 starts a first round of drilling, the mechanical sensor records initial time of the first round of drilling, when the first round of drilling stops, the mechanical sensor stops recording tension data of the spring 2 and records end time of the first round of drilling;

103, restoring the tension of the spring 2 to the tension data of the spring 2 recorded by the tension sensor 4 when the last drilling cycle is ended, then drilling the Nth drilling cycle, recording the initial time of the N drilling cycles by the mechanical sensor, collecting the tension data of the spring 2, and recording the ending time of the N drilling cycles when the Nth drilling cycle is stopped

And step 104, repeating the third step until drilling is completed and the hole is finished, and receiving and recording all the tension data of the spring 2 by the data terminal and sending the tension data to the server.

And 105, processing continuous data in the data terminal or the service end, drawing a mechanical change curve, connecting and fitting a plurality of spring 2 tension data curves drilled in the next drilling, and matching the mechanical change curve with the corresponding stratum type.

Specifically, for the spring 2 in the elastic deformation range, the elongation length H and the tensile force F of the spring 2 have a functional relationship H (G) (F), the function can be determined before starting the monitoring, in most cases linearly, that is, K is a constant, the graph of F-t shown in fig. 3 can be converted into a graph of H-t by H ═ g (F), and then the differential calculation of the function H (t) with respect to t is performed in the data processing module, i.e., dH/dt-v, where v is the drilling speed during drilling, the F-t graph of the original log may be finally converted into a v-H graph as shown in fig. 4, which may represent the drilling speed of the formation at different depths, different stratum attributes can be reflected according to the depth, so that evidentiary data can be provided for the cataloguing of the drilling stratum.

For the F-t diagram shown in FIG. 3, it can be used to determine the abrupt change point of the vertical change of the formation, for example, the node where F changes steeply and slowly with time often represents the rock-soil interface, the interlayer can be identified when the F abrupt change is reduced in a smaller amplitude, and the karst cave can be identified when the F abrupt change is reduced in a larger amplitude.

Under different geological conditions, an analyst can comprehensively analyze regional geological data and drilling core conditions, can also perform combined judgment on F-t, v-t and v-h graphs, and judges different rock strata or soil layers according to the size of v after determining abnormal or mutation depth nodes.

In the range of small stratum change, the data collected by a plurality of drill holes can be used for establishing a database of the regional geotechnical layer drilling F, H, v, and auxiliary evidence data are provided for geotechnical investigation work of other engineering projects in the same region. The F, v corresponding to the small geological drilling machine has larger difference due to different drill bits and engines, so the model of the drilling machine and the type of the drill bit need to be marked when data recording is adopted, and the related data cannot be mixed when different drilling machine models or types of the drill bits are taken.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made thereto within the knowledge of those skilled in the art.

Claims (5)

1. A device for monitoring stratum changes of a drilling machine in a drilling process is characterized by comprising at least two springs with the same length and performance indexes, a fixer for fixing the springs on the drilling machine, a tension sensor arranged at the end part of each spring, a data terminal for recording and processing spring tension data measured by the tension sensor, and a service end for receiving the spring tension data recorded by the data terminal and reserving the spring tension data as a record; the springs are parallel to a drill string of the drilling machine and are rotationally and symmetrically distributed around the drill string; the top end of the spring is fixed on a water faucet of the drilling machine through a fixer, and the bottom end of the spring is fixed on the top of a hydraulic system of the drilling machine through the fixer; the spring is in tension before each drill-in cycle begins.

2. The device for monitoring the stratum change of the drilling machine in the drilling process according to claim 1, wherein the length of the spring is 1.5-2.5 meters, and the elastic deformation limit stretching amount is less than 4 meters.

3. The apparatus for monitoring formation changes during drilling of a drilling rig as set forth in claim 2, wherein the spring is externally wrapped with a protective jacket.

4. The device for monitoring formation changes of a drilling machine in the drilling process according to any one of the claims 1-3, wherein the data terminal comprises the following modules:

the data storage module is used for receiving and storing spring tension data measured by the tension sensor so as to record continuous data of the change of the tension applied to the spring along with time;

the data transmission module is used for directly sending the spring tension data to a server for record;

and the data terminal and the server are respectively provided with a data processing module for processing the continuous data in the data storage module, drawing a mechanical change curve, connecting and fitting a plurality of spring tension data curves of drilling for the next time, and matching the mechanical change curve with the corresponding stratum type.

5. The device for monitoring the stratum change of the drilling machine in the drilling process according to claim 4, wherein the data terminal and the server are provided with a human-computer interaction module for displaying various data information, charts, data comparison and abnormal prompts as required.

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