Pressure-rotated touch-probe device and method for measuring geotechnical parameters

Abstract

This invention provides a pressure-rotation cone penetration test (PPT) device and method for determining soil and rock parameters. The PPT device includes a housing, a torsional power unit, a static loading device, a pressure-rotation cone penetrometer, a displacement sensor, and a torque sensor, all installed within the housing. The torsional power unit drives the pressure-rotation cone penetrometer to rotate, while the static loading device applies downward pressure to the device. Under the combined action of both, the device rotates downwards into the soil and rock mass. The displacement sensor collects the downward displacement of the device, and the torque sensor measures the torque force exerted on the device as it rotates downwards into the soil and rock mass. The displacement and torque sensors transmit the collected data to a control computer via wired or wireless means. After receiving the penetration data from the sensors, the control computer calls the relationship model between the penetration data and soil parameters, substitutes the penetration data into the model, generates a test report, and displays it on a monitor in real time.

Description

TECHNICAL FIELD

[0001] The present application relates to a device and method for measuring geotechnical parameters in an engineering site, in particular, to a pressure-rotating touch sounding device and method for measuring geotechnical parameters in an engineering site. BACKGROUND

[0002] Obtaining geotechnical engineering mechanics parameters in a construction site is the basis of geotechnical engineering construction. At present, the main exploration method for geotechnical engineering mechanics parameters is indoor test measurement, that is, collecting geotechnical samples from the construction site, and obtaining corresponding mechanics parameters through laboratory equipment.

[0003] The disadvantages of this method for measuring geotechnical parameters are: 1. During the collection, transportation and preservation of geotechnical samples, disturbance will occur, which will adversely affect the experimental data, and the final experimental results will be greatly different from the actual situation, and a large amount of time cost and manpower and material resources will be consumed. 2. For soil and rock mixture, slag body, loose accumulation body, etc., it is difficult to sample, and it is difficult to obtain mechanics parameters. For loose accumulation body slope, only indoor test measurement is mainly used, and some in-situ tests such as in-situ shear test, in-situ static sounding and vane shear test are used as auxiliary. It is time-consuming and laborious, and the experimental results are greatly different from the actual situation, and the experimental results have little reference value. SUMMARY

[0004] In order to solve the problems of long time consumption, large measurement error, poor engineering applicability for obtaining parameters of loose accumulation body, and inability to be directly applied to engineering site measurement of the traditional method for measuring geotechnical parameters, the purpose of the present application is to provide a pressure-rotating touch sounding device and method for measuring geotechnical parameters directly used in an engineering site.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a pressure-rotating touch sounding device for measuring geotechnical parameters, comprising a box body, a torsional power device, a static loading device, a pressure-rotating touch sounding device, a displacement sensor and a torque sensor installed in the box body;

[0006] The torsional power device drives the pressure-rotating touch sounding device to rotate, the static loading device applies a downward pressure to the pressure-rotating touch sounding device, and the pressure-rotating touch sounding device rotates downward into the geotechnical body to be explored under the joint action of the torsional power device and the static loading device;

[0007] The displacement sensor is installed in the box body to measure the distance of the pressure-rotating touch sounding device downward, and the torque sensor is installed on the pressure-rotating touch sounding device to measure the torque acting force when it rotates downward into the geotechnical body. The displacement sensor and the torque sensor transmit the collected data to the control end computer through wired or wireless mode.

[0008] Preferably, the torsion power device comprises a stator and a torsion rotor; the stator is fixed on a working platform in the box; the torsion rotor is located in the stator.

[0009] Preferably, the height of the stator is 30-50 cm, and the height of the torsion rotor is 10 cm.

[0010] Preferably, the pressure-rotation touch probe device comprises a pressure-rotation probe rod and a pressure-rotation probe head; the pressure-rotation probe rod passes through the axis of the torsion rotor and is coaxially screwed with the torsion rotor, and the torsion rotor drives the pressure-rotation probe rod to rotate.

[0011] The bottom of the pressure-rotation probe rod extends out of the box through the box, and the sharp pressure-rotation probe head is fixed at the bottom of the pressure-rotation probe rod.

[0012] Preferably, the static loading device comprises a weight and a force receiving washer; the force receiving washer is fixed on the upper part of the pressure-rotation probe rod, and the weight is placed on the force receiving washer through the pressure-rotation probe rod to exert a downward pressure on the pressure-rotation probe rod.

[0013] Preferably, adjustable height legs are respectively installed at the four corners of the bottom of the box, and an X-axis rotation angle sensor and a Y-axis rotation angle sensor are installed on the inner bottom plate of the box.

[0014] Preferably, the displacement sensor is installed in the box to measure the displacement of the pressure-rotation probe rod.

[0015] The torque sensor is fixed at the bottom of the pressure-rotation probe rod to record the torsional force borne by the pressure-rotation probe head when it rotates into the rock-soil body.

[0016] The data output ends of the displacement sensor and the torque sensor transmit the detected data to the control end computer through wired or wireless mode.

[0017] Preferably, the pressure-rotation touch probe equipment for measuring rock-soil body parameters further comprises a GPS positioning instrument installed in the box for positioning.

[0018] The method for measuring rock-soil body parameters by using the above-mentioned pressure-rotation touch probe equipment for measuring rock-soil body parameters is as follows: the pressure-rotation touch probe equipment for measuring rock-soil body parameters is installed at the rock-soil body to be measured, the pressure-rotation probe rod and the pressure-rotation probe head are driven downward into the rock-soil body by the torsion power device and the static loading device, the depth of the probe rod into the rock-soil body is recorded by the displacement sensor, the torsional force of the probe head is recorded by the torque sensor, and the collected data are transmitted to the control end computer through wired or wireless mode for data statistics and analysis, a test report is given, and rapid surveying is realized.

[0019] The pressure-rotation touch sounding method for determining the rock-soil body parameter specifically comprises the following steps.

[0020] S1: moving the pressure-rotation touch sounding device to the side of the rock-soil body to be measured and positioning at the mark point of the rock-soil body to be measured;

[0021] S2: adjusting the supporting legs at the bottom of the box body so as to keep the bottom plate of the box body relatively horizontal;

[0022] S3: starting the torsional power device and the static force loading device to drive the pressure-rotation touch sounding device to rotate downward into the rock-soil body to perform the touch sounding test on the soil body;

[0023] S4: acquiring the touch sounding data collected by the displacement sensor and the torque sensor and recording and storing;

[0024] After the control end computer receives the touch sounding data collected by the sensor, the relationship model between the touch sounding data and the rock-soil body parameter is called, the touch sounding data is substituted into the relationship model, the test report is given, and the test report is displayed on the display in real time.

[0025] Compared with the prior art, the advantages of the present application are: 1. The rock-soil body parameter at the construction site can be measured. The present application directly measures the rock-soil body at the construction site through the torsional power device, the static force loading device and the pressure-rotation touch sounding device, acquires relevant data, and is simple and convenient to operate, and the measurement data obtained is reliable and accurate, overcoming the limitations of the traditional method for measuring the soil body parameter, large measurement error and other disadvantages. 2. The present application applies different pressures to the pressure-rotation touch sounding device through the static force loading device, and applies different rotary cutting powers to the pressure-rotation touch sounding device through the torsional power device, so that the pressure-rotation touch sounding device can carry out exploration test on different types of strata, and real-time rock-soil body parameters are obtained, and the application range is wide. 3. The present application has high mechanization degree and digitization degree in the whole determination process of the rock-soil body parameter, and avoids the influence of human subjective factors, so that the measurement result is more scientific and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure schematic view of the pressure-rotation touch sounding device for determining the rock-soil body parameter of the present application;

[0027] Figure 2 is a front projection main view of the pressure-rotation touch sounding device for determining the rock-soil body parameter of the present application;

[0028] Figure 3 is a front projection side view of the pressure-rotation touch sounding device for determining the rock-soil body parameter of the present application;

[0029] Figure 4 is a front projection top view of the pressure-rotation touch sounding device for determining the rock-soil body parameter of the present application;

[0030] Figure 5This is a schematic diagram of the internal structure of the pressure penetrometer for measuring soil and rock parameters according to the present invention.

[0031] Among them, 1-box body, 11-box body support, 12-X-axis rotation sensor, 13-Y-axis rotation sensor, 14-working platform, 15-GPS locator; 2-stator; 3-torsion rotor; 4-pressure rotation probe; 5-pressure rotation probe; 6-weight; 7-force-bearing pad; 8-displacement sensor; 9-torque sensor; 10-control terminal computer. Detailed Implementation

[0032] The structure and features of the present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that various modifications can be made to the embodiments disclosed herein; therefore, the embodiments disclosed in this specification should not be considered as limitations on the present invention, but merely as examples to make the features of the present invention readily apparent.

[0033] like Figures 1-5 As shown, the pressure-rotation penetrometer for determining soil and rock parameters according to the present invention includes a housing, a torsional power device, a static loading device, a pressure-rotation penetrometer, a displacement sensor, and a torque sensor installed inside the housing. The torsional power device drives the pressure-rotation penetrometer to rotate, and the static loading device applies downward pressure to the pressure-rotation penetrometer. The combined action of the torsional power device and the static loading device causes the pressure-rotation penetrometer to rotate downward into the soil and rock being surveyed. The displacement sensor, installed inside the housing, measures the downward displacement distance of the pressure-rotation penetrometer, and the torque sensor, installed on the pressure-rotation penetrometer, measures the torque force exerted on the pressure-rotation penetrometer as it rotates downward into the soil and rock. The displacement sensor and the torque sensor transmit the collected data to a control computer via wired or wireless means.

[0034] The bottom of the housing 1 is equipped with adjustable feet 11 at each of the four corners. An X-axis rotation sensor 12 and a Y-axis rotation sensor 13 are installed on the inner bottom plate of the housing 1. The height of the feet 11 is adjusted according to the X-axis rotation sensor 12 and the Y-axis rotation sensor 13 to make the bottom surface of the housing 1 level.

[0035] A working platform 14 is also fixed on the bottom surface of the box 1. The surface of the working platform 14 has grooves, and the torsion power device is installed on the working platform.

[0036] The torsional power device includes a stator 2 and a torsional rotor 3. The stator 2 is secured in a groove on the working platform 14, and the torsional rotor 3 is located inside the stator 2. In a preferred embodiment of the present invention, the height of the stator 2 is approximately 30cm-50cm, and the height of the torsional rotor 3 is approximately 10cm.

[0037] The pressure-rotation touch device comprises a pressure-rotation probe rod 4 and a pressure-rotation probe head 5. The pressure-rotation probe rod 4 penetrates the shaft of the torsion rotor 3 and is coaxially screwed with the torsion rotor 3, and the torsion rotor 3 drives the pressure-rotation probe rod 4 to rotate. The bottom of the pressure-rotation probe rod 4 extends out of the box body 1, and the sharp pressure-rotation probe head 5 is fixed at the bottom of the pressure-rotation probe rod 4.

[0038] The static loading device comprises a weight 6 and a force receiving gasket 7. The force receiving gasket 7 is fixed (for example, welded) on the upper part of the pressure-rotation probe rod 4, and the weight 6 is placed on the force receiving gasket 7 through the pressure-rotation probe rod 4 to exert a downward pressure on the pressure-rotation probe rod 4. When the present application works, the torsion rotor 3 is energized, the rotor coil generates a magnetic field, and the torsion rotor 3 interacts with the stator 2, and the torsion rotor 3 rotates under the action of the magnetic field force, driving the pressure-rotation probe rod 4 to rotate, at the same time, the weight of the weight 6 on the force receiving gasket 7 is gradually increased to exert a downward pressure on the pressure-rotation probe rod 4, so that the pressure-rotation probe rod 4 is displaced downward, and the pressure is transmitted to the pressure-rotation probe head 5 to drill into the rock-soil body.

[0039] In order to sense the depth of the pressure-rotation probe rod 4 rotating downward, a displacement sensor 8 is fixed on the operation platform 14. In the preferred embodiment of the present application, the displacement sensor 8 is an infrared distance measuring sensor, and a target point is pasted on the bottom surface of the force receiving gasket 7. The infrared distance measuring sensor emits infrared rays, which are reflected back to the distance measuring sensor after irradiating the target point, and then the depth of the pressure-rotation probe rod 4 rotating downward is measured, and the accuracy can reach 1mm.

[0040] A torque sensor 9 is also fixed at the bottom of the pressure-rotation probe rod 4, which is used to record the torsional force suffered by the pressure-rotation probe head 5 when it rotates into the rock-soil body. For different stratum structures, the torsional force suffered by the pressure-rotation probe head is different, so the internal structure and physical and mechanical properties of the detected rock-soil body can be analyzed according to the rotating depth of the pressure-rotation probe rod 4 and the torsional force suffered by the pressure-rotation probe head 5.

[0041] The data output ends of the displacement sensor 8 and the torque sensor 9 transmit the detected data to the control end computer 10 through wired or wireless mode for data analysis. Of course, other sensors can also be installed on the pressure-rotation probe rod 4 and / or the pressure-rotation probe head 5 as needed to detect other mechanical data of the rock-soil body for analyzing the internal structure of the rock-soil body.

[0042] For detection needs, the pressure-rotation probe rod 4 of the present application is designed as a spliced probe rod, as shown in Figure 4 A plurality of probe rods 41 for splicing the pressure-rotation probe rod 4 are placed in the box body. At the same time, weights 61 of different weights are placed in the box body.

[0043] In order to accurately determine the coordinates of the detection position, the GPS positioner 15 is further fixed in the box body 1, which is used for positioning the position of the pressure rotary touch probe device and accurately placing the device at the to-be-measured point.

[0044] The application further discloses a method for testing the parameters of the rock-soil body by using the pressure rotary touch probe device, that is, the application is installed at the to-be-measured rock-soil body for in-situ testing, the pressure rotary probe rod 4 and the pressure rotary probe head 5 are driven to rotate into the rock-soil body by the torsional power device and the static loading device, the depth of the probe rod 4 rotating into the rock-soil body is recorded by the displacement sensor 8, the torsional force of the probe head 5 is recorded by the torque sensor 9, the collected data are transmitted to the control terminal computer 10 by wired or wireless mode for data statistics and analysis, and a test report is given, so that the rapid surveying is realized.

[0045] The specific method for testing the parameters of the soil body by using the pressure rotary touch probe device is as follows:

[0046] S1: moving the pressure rotary touch probe device to the side of the to-be-measured rock-soil body and positioning at the to-be-measured rock-soil body mark point;

[0047] S2: adjusting the supporting legs at the bottom of the box body so that the bottom plate of the box body is kept relatively horizontal;

[0048] S3: starting the torsional power device and the static loading device to drive the pressure rotary touch probe device to rotate into the rock-soil body, and performing the touch probe test on the rock-soil body;

[0049] S4: obtaining the touch probe data collected by the displacement sensor and the torque sensor and recording and storing the touch probe data.

[0050] After the control terminal computer receives the touch probe data collected by the sensor, the relationship model between the touch probe data and the parameters of the rock-soil body is called, the touch probe data is substituted into the relationship model, a test report is given, and the test report is displayed on the display in real time.

[0051] The application can carry out the field pressure rotary touch probe test on different types of strata by the torsional power device, the static loading device and the pressure rotary touch probe device, and the parameters of the rock-soil body are obtained, so that the operation is simple and convenient, the limitations of the traditional method for measuring the parameters of the rock-soil body and the large measurement error are overcome, and the engineering practical problems are solved.

[0052] Finally, it should be noted that the above-described embodiments are merely used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be replaced equivalently; and these modifications or replacements do not cause the essential nature of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pressure-rotating sounding device for determining parameters of a geotechnical body, characterized in that: It includes a box, a torsion power device, a static loading device, a pressure rotary sounding device, a displacement sensor and a torque sensor installed in the box, and a GPS positioning device installed in the box for positioning; the bottom corners of the box are respectively provided with adjustable height supporting legs, and an X-axis rotation angle sensor and a Y-axis rotation angle sensor are installed on the inner bottom plate of the box; The torsion power device drives the pressure rotary sounding device to rotate, the static loading device applies downward pressure to the pressure rotary sounding device, and the pressure rotary sounding device rotates downward into the rock-soil body under the combined action of the torsion power device and the static loading device; The displacement sensor is installed in the box to measure the downward displacement distance of the pressure rotary sounding device, and the torque sensor is installed on the pressure rotary sounding device to measure the torque acting force when the pressure rotary sounding device rotates downward into the rock-soil body; the displacement sensor and the torque sensor transmit the collected data to the control end computer through wired or wireless mode; The torsion power device includes a stator and a torsion rotor; the stator is clamped on a working platform in the box; the torsion rotor is located in the stator; the height of the stator is 30-50 cm, and the height of the torsion rotor is 10 cm; The pressure rotary sounding device includes a pressure rotary sounding rod and a pressure rotary sounding head; the pressure rotary sounding rod passes through the axis of the torsion rotor and is coaxially screwed with the torsion rotor, and the torsion rotor drives the pressure rotary sounding rod to rotate; the bottom of the pressure rotary sounding rod extends out of the box, and the sharp pressure rotary sounding head is fixed on the bottom of the pressure rotary sounding rod; The static loading device includes a weight and a force receiving gasket; the force receiving gasket is fixed on the upper part of the pressure rotary sounding rod, and the weight is placed on the force receiving gasket through the pressure rotary sounding rod to apply downward pressure to the pressure rotary sounding rod.

2. A pressure-rotating sounding apparatus for determining parameters of a geotechnical body according to claim 1, characterized in that: The displacement sensor is installed in the box to measure the displacement of the pressure rotary sounding rod; The torque sensor is fixed on the bottom of the pressure rotary sounding rod to record the torsional force acting on the pressure rotary sounding head when it rotates into the rock-soil body; The data output ends of the displacement sensor and the torque sensor transmit the detected data to the control end computer through wired or wireless mode.

3. Method for determining the parameters of a rock-soil mass with a pressure-rotating sounding device according to one of claims 1-2, characterized in that: The pressure rotary sounding device is installed at the rock-soil body to be measured to measure the soil parameters, the pressure rotary sounding rod and the pressure rotary sounding head are driven by the torsion power device and the static loading device to rotate downward into the rock-soil body, the depth of the sounding rod rotating into the rock-soil body is recorded by the displacement sensor, the torsional force of the sounding head is recorded by the torque sensor, and the displacement sensor and the torque sensor transmit the collected data to the control end computer through wired or wireless mode for data statistics, analysis, test report, and fast survey.

4. The pressure-rotating sounding method for determining parameters of a rock-soil mass according to claim 3, characterized in that: It includes the following steps: S1: move the pressure rotary sounding device to the side of the rock-soil body to be measured and position it at the mark point of the rock-soil body to be measured; S2: adjust the supporting legs at the bottom of the box to keep the bottom plate of the box relatively horizontal; S3: start the torsion power device and the static loading device to drive the pressure rotary sounding device to rotate downward into the rock-soil body and perform sounding test on the soil body; S4; get the penetration data collected by displacement sensor and torque sensor and record and store; After the control terminal computer receives the penetration data collected by the sensor, the relationship model between the penetration data and the geotechnical parameters is called, the penetration data is substituted into the relationship model, the test report is given, and the real-time display is displayed on the display.

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