CN112359809A - Saturation device and saturation method for spherical static sounding probe - Google Patents
Saturation device and saturation method for spherical static sounding probe Download PDFInfo
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- CN112359809A CN112359809A CN202011203846.7A CN202011203846A CN112359809A CN 112359809 A CN112359809 A CN 112359809A CN 202011203846 A CN202011203846 A CN 202011203846A CN 112359809 A CN112359809 A CN 112359809A
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Abstract
The invention relates to the technical field related to ocean new energy engineering and ocean geotechnical investigation in-situ test, in particular to a saturation device and a saturation method for a spherical static sounding probe. The upper cavity and the lower cavity can be separated up and down, the first step part and the second step part are in staggered fit, the sealing between the upper cavity and the lower cavity can be effectively formed, the hard ventilating plate with the fixing hole can be placed on the first step part, the periphery of the hard ventilating plate is fixed through the side wall of the upper cavity and the first step part of the lower cavity, the bottom of the spherical static sounding probe is effectively fixed through the bottom plate with the concave surface in the lower cavity, and the bottom of the spherical static sounding probe is fixed in the lower cavity through the hard ventilating plate and the bottom plate with the concave surface in the lower cavity, so that the problem that the spherical static sounding probe shakes left and right or slides due to shaking of an operation platform under the sea stormy conditions is effectively solved.
Description
Technical Field
The invention relates to the technical field related to ocean new energy engineering and ocean geotechnical investigation in-situ test, in particular to a saturation device and a saturation method for a spherical static sounding probe.
Background
The spherical static cone penetration test (Ball penetration) is an in-situ test method for soft clay, and the operation method of the spherical static cone penetration test (Ball penetration) is similar to that of the traditional pore pressure static Cone Penetration Test (CPTU), except that a probe is spherical, and a pore pressure sensor is positioned in the middle of the spherical probe; in the injection process, the surrounding soil body is in a full flow form (full flow), the influence of overlying pressure on the test process is small, and meanwhile, the remodeling strength of the soft clay can be rapidly measured through continuous injection and upward pulling, and the sensitivity of the soft clay is obtained.
Because spherical static cone penetration test probe is similar with traditional piezocone penetration test probe, dispose the pore pressure sensor equally, consequently all need saturate the pore pressure sensor before the in situ test, just can test, otherwise can lead to pore pressure data distortion. The traditional piezocone penetration test probe has a corresponding saturation device, and when the traditional piezocone penetration test probe saturation device is adopted to saturate the spherical piezocone penetration test probe, the spherical penetration test probe is found to be circular, and particularly, when the operation is performed on the sea, the operation platform shakes due to the influence of sea stormy waves and currents, so that the probe cannot be effectively saturated.
Therefore, aiming at the scene that the ocean engineering exploration operation platform shakes under the action of wind and wave currents, the saturation device and the saturation method of the spherical static sounding probe suitable for ocean engineering exploration are urgently needed to be provided.
Disclosure of Invention
A first object of the present invention is to provide a saturation device for a spherical static cone penetration probe, which can meet the saturation requirements of the spherical static cone penetration probe.
Therefore, the above purpose of the invention is realized by the following technical scheme:
a saturation device for a spherical static cone penetration probe comprises a saturation container, an upper oil groove, a lower oil groove and a vacuum pump; the saturation vessel comprises an upper chamber and a lower chamber, the upper chamber and the lower chamber are combined to form the saturation vessel, a bottom plate is arranged in the lower cavity, a concave surface attached to the bottom surface of the spherical static sounding probe is arranged on the bottom plate, a first step part is arranged on the inner side of the upper end of the side wall of the lower cavity, a second step part is arranged on the outer side of the lower end of the side wall of the upper cavity, the first step part and the second step part form dislocation matching to realize the sealing of the upper chamber and the lower chamber, the first step part is matched with the lower end of the side wall of the upper chamber to press the circumference of the hard ventilating plate to fix the upper protrusion of the spherical static sounding probe, the hard air permeable plate is provided with a fixed hole matched with the protrusion of the spherical static sounding probe with the external thread at the upper protrusion part of the spherical static sounding probe so as to sleeve the upper protrusion part of the spherical static sounding probe; the lower part of the lower cavity is provided with an oil outlet valve communicated with a lower oil discharge valve at the lower part of the lower oil groove, the upper part of the lower cavity is provided with an oil inlet valve communicated with an upper oil discharge valve at the lower part of the upper oil groove, the height of the oil inlet valve is lower than that of the first step part of the lower cavity, the height of the upper oil discharge valve is higher than that of the oil inlet valve, and the height of the oil discharge valve is higher than that of the lower oil discharge valve; the upper part of the upper cavity is provided with an exhaust valve and an exhaust valve, and the exhaust valve is communicated with a vacuum pump air valve of a vacuum pump; an oil inlet pipeline is arranged between the upper oil outlet valve of the upper oil groove and the oil inlet valve of the lower cavity, and an oil outlet pipeline is arranged between the oil outlet valve of the lower cavity and the lower oil outlet valve of the lower oil groove; and an air exhaust pipeline is arranged between a vacuum pump air valve of the vacuum pump and an air exhaust valve of the upper cavity.
On the basis of adopting the technical scheme, the invention can also adopt or combine the following technical scheme:
as a preferred technical scheme of the invention: the hard breathable plate is breathable and oil-tight.
As a preferred technical scheme of the invention: the hard breathable plate is prepared from an ePTFE membrane.
As a preferred technical scheme of the invention: the first step part is provided with a polytetrafluoroethylene rubber strip at the contact part of the circumference of the hard breathable plate and/or the hard breathable plate is provided with a polytetrafluoroethylene rubber strip at the contact part of the circumference of the hard breathable plate and the upper chamber side wall and/or the second step part is provided with a polytetrafluoroethylene rubber strip at the contact part of the second step part and the lower chamber side wall.
As a preferred technical scheme of the invention: the bottom of the lower cavity is provided with a support leg so that the height of the oil outlet valve of the lower cavity is higher than that of the lower oil discharge valve on the lower oil groove.
As a preferred technical scheme of the invention: and the top of the inner side of each support leg is provided with a stiffening rib which abuts against the bottom of the lower cavity.
As a preferred technical scheme of the invention: and a silicone oil accommodating space formed by the hard air permeable plate, the spherical static sounding probe and the lower cavity in a wrapping mode is smaller than the minimum value of the upper oil groove and the lower oil groove.
It is a further object of the present invention to provide a saturation method using the saturation apparatus for a spherical static cone penetration probe as hereinbefore described.
Therefore, the above purpose of the invention is realized by the following technical scheme:
a saturation method applying the saturation apparatus for a spherical static cone penetration probe described hereinbefore, the saturation method comprising the steps of:
step one, installing a saturation device:
101, placing a spherical static sounding probe in a concave surface of a bottom plate of a lower cavity of a saturated container;
102, placing a fixed hole sleeve of a hard air-permeable plate on a first step part which protrudes from the upper part of the spherical static cone penetration probe and is circumferentially placed on a lower cavity;
103, placing the lower end of the side wall of the upper chamber on the first step part of the lower chamber, and enabling the second step part of the upper chamber to just abut against the upper end of the side wall of the lower chamber so as to seal the upper chamber and the lower chamber;
104, mounting an oil inlet pipeline on an upper oil discharging valve of the upper oil groove and an oil inlet valve of the lower cavity to be communicated, placing the upper oil groove on the uppermost layer of the steel frame, and keeping the height of the upper oil discharging valve of the upper oil groove higher than that of the oil inlet valve of the lower cavity;
105, mounting an oil outlet pipeline on a lower oil discharge valve of the lower oil groove and an oil outlet valve of the lower cavity to be communicated, placing the lower oil groove on the lowest layer of the steel frame, and keeping the height of the lower oil discharge valve of the lower oil groove lower than that of the oil outlet valve of the lower cavity;
step 106, mounting an air suction pipeline on an air suction valve and an air valve of a vacuum pump of the upper chamber to communicate with each other;
step two, a saturation process:
step 201, closing all valves of a saturation device;
202, pouring silicone oil into the upper oil groove, opening an exhaust valve of the upper cavity, and opening an upper oil discharge valve of the upper oil groove and an oil inlet valve of the lower cavity, wherein the silicone oil enters the lower cavity from an oil inlet pipeline through an upper-lower pressure difference;
step 203, after the height of the silicone oil is higher than that of a pore pressure sensor in the middle of the spherical static sounding probe, closing an upper oil discharge valve of an upper oil groove and an oil inlet valve of a lower cavity;
step 204, closing an exhaust valve of the upper chamber, opening an air extraction valve, and opening a vacuum pump, so that bubbles can be generated in the silicone oil in the lower chamber;
step 205, when bubbles in the silicone oil disappear, judging that the pore pressure sensor is saturated;
step three, dismounting the device:
step 301, closing the vacuum pump, closing an air extraction valve of the upper chamber, and opening an exhaust valve;
step 302, opening an oil outlet valve of the lower cavity, opening a lower oil discharge valve of the lower oil groove, and completely discharging the silicone oil in the lower cavity to the lower oil groove;
and step 303, closing all valves, separating the upper chamber from the lower chamber, and taking out the spherical static sounding probe.
On the basis of adopting the technical scheme, the invention can also adopt or combine the following technical scheme:
as a preferred technical scheme of the invention: the height of the silicone oil in the lower cavity is controlled by controlling the upper oil discharge valve of the upper oil groove and the oil inlet valve and the oil outlet valve of the lower cavity.
As a preferred technical scheme of the invention: the rigid gas permeable plate is gas permeable and oil impermeable, and is preferably made of an ePTFE membrane.
The invention provides a saturation device and a saturation method for a spherical static sounding probe, which have the following beneficial effects:
(1) the upper cavity and the lower cavity can be separated up and down, and form dislocation fit through the first step part and the second step part, so that sealing between the upper cavity and the lower cavity can be effectively formed, a hard ventilating plate with a fixing hole can be placed on the first step part, the circumference of the hard ventilating plate is fixed through the side wall of the upper cavity and the first step part of the lower cavity, the bottom of the spherical static sounding probe is effectively fixed through the bottom plate with the concave surface in the lower cavity, and the bottom of the spherical static sounding probe is fixed in the lower cavity through the hard ventilating plate and the bottom plate with the concave surface in the lower cavity, so that the problem that the spherical static sounding probe shakes left and right or slides due to shaking of an operation platform under the sea stormy conditions is effectively solved;
(2) in addition, a polytetrafluoroethylene rubber strip can be arranged at the contact position of the circumference of the first step part and the hard breathable plate and/or a polytetrafluoroethylene rubber strip is arranged at the contact position of the circumference of the hard breathable plate and the side wall of the upper chamber and/or a polytetrafluoroethylene rubber strip is arranged at the contact position of the second step part and the side wall of the lower chamber, so that effective sealing between the lower chamber and the upper chamber is ensured;
(3) the rigid air permeable plate is adopted and can be permeable to air but not permeable to oil, the rigid air permeable plate is particularly prepared from an ePTFE (expanded polyethylene) film, so that air in the silicone oil contained in the lower cavity can be pumped out, the silicone oil in the lower cavity cannot be sputtered into the upper cavity and particularly cannot be sputtered into the upper protrusion of the spherical static sounding probe, the outer side of the upper protrusion of the spherical static sounding probe is provided with an external thread to be connected with a side friction resistance sensor of a sounding shaft rod, in addition, the situation that the upper protrusion of the spherical static sounding probe is submerged if the height of the silicone oil in the lower cavity is too high can be avoided, an effective interval between the containing space of the spherical static sounding probe and the upper cavity is formed, the silicone oil can be controlled through an upper oil discharge valve of an upper oil groove and an oil inlet valve of the lower cavity, and the height of the silicone oil in the lower cavity can be effectively controlled, silicone oil is effectively prevented from submerging the top of the spherical static sounding probe;
(4) after saturation is finished, the silicone oil can be completely discharged through the oil outlet pipeline by opening the oil outlet valve of the lower cavity and the lower oil discharge valve of the lower oil groove, so that the operation that the probe is taken out firstly and then the silicone oil is poured out in the traditional saturation method is avoided, convenience and rapidness are improved, and meanwhile, silicone oil can be prevented from leaking and is more environment-friendly.
Drawings
FIG. 1 is a block diagram of a saturation vessel provided by the present invention;
FIG. 2 is a block diagram of a saturation apparatus for a spherical static cone penetration probe according to the present invention;
in the figure: 1-a lower chamber; 2-a bottom plate; 3-a stiffening rib; 4-an oil outlet valve; 5-an oil inlet valve; 6-spherical static cone penetration probe; 7-pore pressure sensor; 8-silicone oil; 9-hard breathable board; 10-an upper chamber; 11-an air extraction valve; 12-a gas outlet valve; 13-polytetrafluoroethylene adhesive tape; 14-a vacuum pump; 15-vacuum pump air valve; 16-steel frame; 17-oiling a tank; 18-lower oil sump; 19-an upper oil drain valve; 20-lower drain valve; 21-oil inlet pipeline; 22-an oil outlet pipeline; 23-air extraction line.
Detailed Description
The invention is described in further detail with reference to the figures and specific embodiments.
The utility model provides a saturating device for spherical static sounding probe, includes cavity 1 down, bottom plate 2, stiffening rib 3, goes out oil valve 4, oil inlet valve 5, spherical static sounding probe 6, pore pressure sensor 7, silicon oil 8, stereoplasm ventilative board 9, upper chamber 10, bleeder valve 11, discharge valve 12, polytetrafluoroethylene adhesive tape 13, vacuum pump 14, vacuum pump pneumatic valve 15, steelframe 16, go up oil bath 17, lower oil bath 18, go up oil bath 19, go up oil bath 20 down, oil feed line 21, go out oil line 22, bleeder line 23 down.
The lower cavity 1 is a hollow cylinder made of organic glass, the bottom of the lower cavity is a bottom plate 2 made of organic glass, the bottom plate is an organic glass bottom plate, a stiffening rib 3 is arranged at the lower part of the bottom plate 2, the stiffening rib 3 is also made of organic glass, and an oil outlet valve 4 and an oil inlet valve 5 are arranged on the side edge of the lower cavity 1; the spherical static sounding probe 6 can be placed in the lower cavity 1 and in the concave surface 2a of the bottom plate 2; the middle part of the spherical static sounding probe 6 is provided with a pore pressure sensor 7, the lower cavity 1 is filled with silicon oil 8, and the position of the silicon oil 8 is higher than that of the pore pressure sensor 7; the middle part of the hard air-permeable plate 9 is provided with a fixing hole 9a which can be just buckled on the protrusion 6a of the spherical static sounding probe 6 and is placed on the first step part 1a of the lower cavity 1, the hard air-permeable plate 9 has the functions of air permeability and oil impermeability, and is preferably made of an ePTFE membrane, for example, two pieces of iron wire nets are included, and the ePTFE membrane is clamped between the iron wire nets; the top end of the upper chamber 10 is provided with an air suction valve 11 and an air exhaust valve 12; a circle of polytetrafluoroethylene adhesive tape 13 is arranged at the contact position of the second step part 10a of the upper cavity 10 and the side wall of the lower cavity 1, so that the air tightness when the lower cavity 1 is attached can be ensured, the polytetrafluoroethylene adhesive tape can be arranged at the contact position of the first step part of the lower cavity and the circumference of the hard breathable plate, and the polytetrafluoroethylene adhesive tape is arranged at the contact position of the circumference of the hard breathable plate and the side wall of the upper cavity.
The vacuum pump 14 is provided with a vacuum pump air valve 15 which can be connected with the air suction valve 11 on the upper chamber 10 through an air suction pipeline 23; an upper oil groove 17 and a lower oil groove 18 are arranged on the steel frame 16; an upper oil discharge valve 19 is arranged on the side of the upper oil groove 17 and can be connected with an oil inlet valve 5 on the lower chamber 1 through an oil inlet pipeline 21; the lower oil sump 18 has a lower oil drain valve 20, which is connectable to the oil drain valve 4 on the lower chamber 1 via an oil drain line 22.
A method of saturating a spherical cone penetration probe with a saturating apparatus for a spherical cone penetration probe, comprising the steps of:
step one, installing a saturation device:
101, placing a spherical static sounding probe in a concave surface of a bottom plate of a lower cavity of a saturated container;
102, placing a fixed hole sleeve of a hard air-permeable plate on a first step part which protrudes from the upper part of the spherical static cone penetration probe and is circumferentially placed on a lower cavity;
103, placing the lower end of the side wall of the upper chamber on the first step part of the lower chamber, and enabling the second step part of the upper chamber to just abut against the upper end of the side wall of the lower chamber so as to seal the upper chamber and the lower chamber;
104, mounting an oil inlet pipeline on an upper oil discharging valve of the upper oil groove and an oil inlet valve of the lower cavity to be communicated, placing the upper oil groove on the uppermost layer of the steel frame, and keeping the height of the upper oil discharging valve of the upper oil groove higher than that of the oil inlet valve of the lower cavity;
105, mounting an oil outlet pipeline on a lower oil discharge valve of the lower oil groove and an oil outlet valve of the lower cavity to be communicated, placing the lower oil groove on the lowest layer of the steel frame, and keeping the height of the lower oil discharge valve of the lower oil groove lower than that of the oil outlet valve of the lower cavity;
step 106, mounting an air suction pipeline on an air suction valve and an air valve of a vacuum pump of the upper chamber to communicate with each other;
step two, a saturation process:
step 201, closing all valves of a saturation device;
202, pouring silicone oil into the upper oil groove, opening an exhaust valve of the upper cavity, and opening an upper oil discharge valve of the upper oil groove and an oil inlet valve of the lower cavity, wherein the silicone oil enters the lower cavity from an oil inlet pipeline through an upper-lower pressure difference;
step 203, after the height of the silicone oil is higher than that of a pore pressure sensor in the middle of the spherical static sounding probe, closing an upper oil discharge valve of an upper oil groove and an oil inlet valve of a lower cavity;
step 204, closing an exhaust valve of the upper chamber, opening an air extraction valve, and opening a vacuum pump, so that bubbles can be generated in the silicone oil in the lower chamber;
step 205, when bubbles in the silicone oil disappear, judging that the pore pressure sensor is saturated;
step three, dismounting the device:
step 301, closing the vacuum pump, closing an air extraction valve of the upper chamber, and opening an exhaust valve;
step 302, opening an oil outlet valve of the lower cavity, opening a lower oil discharge valve of the lower oil groove, and completely discharging the silicone oil in the lower cavity to the lower oil groove;
and step 303, closing all valves, separating the upper chamber from the lower chamber, and taking out the spherical static sounding probe.
The spherical static sounding probe is saturated by the method, and accurate pore pressure measurement data can be provided for a spherical static sounding test.
The above-described embodiments are intended to illustrate the present invention, but not to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit of the present invention and the scope of the claims fall within the scope of the present invention.
Claims (10)
1. A saturation device for a spherical static cone penetration probe, comprising: the saturation device for the spherical static sounding probe comprises a saturation container, an upper oil groove, a lower oil groove and a vacuum pump; the saturation vessel comprises an upper chamber and a lower chamber, the upper chamber and the lower chamber are combined to form the saturation vessel, a bottom plate is arranged in the lower cavity, a concave surface attached to the bottom surface of the spherical static sounding probe is arranged on the bottom plate, a first step part is arranged on the inner side of the upper end of the side wall of the lower cavity, a second step part is arranged on the outer side of the lower end of the side wall of the upper cavity, the first step part and the second step part form dislocation matching to realize the sealing of the upper chamber and the lower chamber, the first step part is matched with the lower end of the side wall of the upper chamber to press the circumference of the hard ventilating plate to fix the upper protrusion of the spherical static sounding probe, the hard air permeable plate is provided with a fixed hole matched with the protrusion with the external thread of the spherical static sounding probe at the upper protrusion part of the spherical static sounding probe so as to sleeve the upper protrusion part of the spherical static sounding probe; the lower part of the lower cavity is provided with an oil outlet valve communicated with a lower oil discharge valve at the lower part of the lower oil groove, the upper part of the lower cavity is provided with an oil inlet valve communicated with an upper oil discharge valve at the lower part of the upper oil groove, the height of the oil inlet valve is lower than that of the first step part of the lower cavity, the height of the upper oil discharge valve is higher than that of the oil inlet valve, and the height of the oil discharge valve is higher than that of the lower oil discharge valve; the upper part of the upper cavity is provided with an exhaust valve and an exhaust valve, and the exhaust valve is communicated with a vacuum pump air valve of a vacuum pump; an oil inlet pipeline is arranged between the upper oil outlet valve of the upper oil groove and the oil inlet valve of the lower cavity, and an oil outlet pipeline is arranged between the oil outlet valve of the lower cavity and the lower oil outlet valve of the lower oil groove; and an air exhaust pipeline is arranged between a vacuum pump air valve of the vacuum pump and an air exhaust valve of the upper cavity.
2. A saturation device for a spherical static cone penetration probe according to claim 1, wherein: the hard breathable plate is breathable and oil-tight.
3. A saturation apparatus for a spherical static cone penetration probe according to claim 1 or claim 2, wherein: the hard breathable plate is prepared from an ePTFE membrane.
4. A saturation device for a spherical static cone penetration probe according to claim 1, wherein: the first step part is provided with a polytetrafluoroethylene rubber strip at the contact part of the circumference of the hard breathable plate and/or the hard breathable plate is provided with a polytetrafluoroethylene rubber strip at the contact part of the circumference of the hard breathable plate and the upper chamber side wall and/or the second step part is provided with a polytetrafluoroethylene rubber strip at the contact part of the second step part and the lower chamber side wall.
5. A saturation device for a spherical static cone penetration probe according to claim 1, wherein: the bottom of the lower cavity is provided with a support leg so that the height of the oil outlet valve of the lower cavity is higher than that of the lower oil discharge valve on the lower oil groove.
6. A saturation apparatus for a spherical static cone penetration probe according to claim 5, wherein: and the top of the inner side of each support leg is provided with a stiffening rib which abuts against the bottom of the lower cavity.
7. A saturation device for a spherical static cone penetration probe according to claim 1, wherein: and a silicone oil accommodating space formed by the hard air permeable plate, the spherical static sounding probe and the lower cavity in a wrapping mode is smaller than the minimum value of the upper oil groove and the lower oil groove.
8. A saturation method using the saturation device for spherical static cone penetration probes according to claim 1, wherein: the saturation method comprises the following steps:
step one, installing a saturation device:
101, placing a spherical static sounding probe in a concave surface of a bottom plate of a lower cavity of a saturated container;
102, placing a fixed hole sleeve of a hard air-permeable plate on a first step part which protrudes from the upper part of the spherical static cone penetration probe and is circumferentially placed on a lower cavity;
103, placing the lower end of the side wall of the upper chamber on the first step part of the lower chamber, and enabling the second step part of the upper chamber to just abut against the upper end of the side wall of the lower chamber so as to seal the upper chamber and the lower chamber;
104, mounting an oil inlet pipeline on an upper oil discharging valve of the upper oil groove and an oil inlet valve of the lower cavity to be communicated, placing the upper oil groove on the uppermost layer of the steel frame, and keeping the height of the upper oil discharging valve of the upper oil groove higher than that of the oil inlet valve of the lower cavity;
105, mounting an oil outlet pipeline on a lower oil discharge valve of the lower oil groove and an oil outlet valve of the lower cavity to be communicated, placing the lower oil groove on the lowest layer of the steel frame, and keeping the height of the lower oil discharge valve of the lower oil groove lower than that of the oil outlet valve of the lower cavity;
step 106, mounting an air suction pipeline on an air suction valve and an air valve of a vacuum pump of the upper chamber to communicate with each other;
step two, a saturation process:
step 201, closing all valves of a saturation device;
202, pouring silicone oil into the upper oil groove, opening an exhaust valve of the upper cavity, and opening an upper oil discharge valve of the upper oil groove and an oil inlet valve of the lower cavity, wherein the silicone oil enters the lower cavity from an oil inlet pipeline through an upper-lower pressure difference;
step 203, after the height of the silicone oil is higher than that of a pore pressure sensor in the middle of the spherical static sounding probe, closing an upper oil discharge valve of an upper oil groove and an oil inlet valve of a lower cavity;
step 204, closing an exhaust valve of the upper chamber, opening an air extraction valve, and opening a vacuum pump, so that bubbles can be generated in the silicone oil in the lower chamber;
step 205, when bubbles in the silicone oil disappear, judging that the pore pressure sensor is saturated;
step three, dismounting the device:
step 301, closing the vacuum pump, closing an air extraction valve of the upper chamber, and opening an exhaust valve;
step 302, opening an oil outlet valve of the lower cavity, opening a lower oil discharge valve of the lower oil groove, and completely discharging the silicone oil in the lower cavity to the lower oil groove;
and step 303, closing all valves, separating the upper chamber from the lower chamber, and taking out the spherical static sounding probe.
9. The saturation method according to claim 7, wherein: the height of the silicone oil in the lower cavity is controlled by controlling the upper oil discharge valve of the upper oil groove and the oil inlet valve and the oil outlet valve of the lower cavity.
10. The saturation method according to claim 7, wherein: the rigid gas permeable plate is gas permeable and oil impermeable, and is preferably made of an ePTFE membrane.
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| US20230044394A1 (en) * | 2021-01-26 | 2023-02-09 | Wenzhou University | Wireless detection device and wireless detection method for quickly positioning throw-fill stone falling depth and long-term settlement in blasting silt-squeezing construction |
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| US11920315B2 (en) * | 2021-01-26 | 2024-03-05 | Wenzhou University | Wireless detection device and wireless detection method for quickly positioning throw-fill stone falling depth and long-term settlement in blasting silt-squeezing construction |
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