CN201933477U - Deep embedding device for pore pressure gauge - Google Patents
Deep embedding device for pore pressure gauge Download PDFInfo
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- CN201933477U CN201933477U CN2010206859618U CN201020685961U CN201933477U CN 201933477 U CN201933477 U CN 201933477U CN 2010206859618 U CN2010206859618 U CN 2010206859618U CN 201020685961 U CN201020685961 U CN 201020685961U CN 201933477 U CN201933477 U CN 201933477U
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- steel sleeve
- spring leaf
- pressure gauge
- cage
- pore pressure
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Abstract
A deep embedding device for a pore pressure gauge relates to the technical field of underground pore water pressure detection and aims to resolve the technical problem of enhancing the burying quality and efficiency of a tester. The embedding device comprises a steel sleeve, a cage-like member, a drill pipe and a pore pressure gauge, wherein a pipe joint is fixed on the lower end of the drill pipe, the external diameter of the pipe joint is larger than the external diameter of the drill pipe. With the lower end sealed, the steel sleeve has an opening at the upper end, the upper end and the lower end of the inner wall of the steel sleeve are respectively provided with a spring laming group which is provided with at least three rigidity spring pieces to block the pipe joint at the lower end of the drill pipe. The upper end of the cage-like member is fixedly connected with the lower end of the steel sleeve, a strainer covers the outer wall and the cage-like member opening at the lower end, a steering wheel type connector is fixedly arranged in the cage-like member cavity which is filled with filter sand, and the pore pressure gauge body penetrates through the axis of the steering wheel type connector to be fixed in the cage-like member. The embedding device has good burying quality and high burying efficiency.
Description
Technical field
The utility model relates to underground monitoring pore water pressure technology, particularly relates to a kind of technology of pore pressure gauge deep layer embedded device.
Background technology
Pore pressure gauge is to be used for measuring each operating mode stage of building work progress, and the instrument of formation pore water pressure situation of change obtains the parameter of required soil layer (section) STRESS VARIATION with this in certain area and the depth bounds.Need during measurement in weak soil, to be drilled with earlier to bury the hole underground, and in pore forming process, adopt mud off,, again pore pressure gauge is embedded in the boring behind the pore-forming to keep the stable of hole wall.Because the easy undergauge of pore-forming back aperture in the weak soil, and mud also can produce uplift pressure to the pore pressure gauge and the signal cable line thereof of transferring in the hole, so the quality of burying underground of pore pressure gauge exists following problem: 1) pore pressure gauge might can not arrive set depth; 2) the signal cable line that indicates length mark is non-rigid scale, misleads the depth of burying sometimes; 3) pore pressure gauge can not be placed in the middle in the hole; 4) enclose and fill out filter sand and differ surely and to arrive the section of burying underground or filter sand can not be uniformly distributed in around the pore pressure gauge.In addition, present pore pressure gauge embedding manner also exists the inefficient problem of burying underground.
The above-mentioned quality problems of burying underground can cause following result: the soil layer pore water pressure that 1) pore pressure gauge reflected is projected depth soil layer (section) not necessarily; 2) the measured data of pore pressure gauge can not truly be reflected the actual pore water pressure of setting soil layer (section) because of burying underground Mass Interference; 3) because pore pressure gauge and signal transmssion line joint area can not get protection, there is certain spoilage in the process of burying underground, can make the pressure gauge of having buried underground lose due measurement effect.
The utility model content
At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides and a kind ofly buries that quality is good underground, depth localization accurately, bury the deep layer embedded device of the high pore pressure gauge of efficient underground.
In order to solve the problems of the technologies described above, a kind of pore pressure gauge deep layer embedded device provided by the utility model is characterized in that: comprise steel sleeve, cage cover, drilling rod and pore pressure gauge;
Described steel sleeve is a vertical straight tube, its upper end open and following end closure, the two ends up and down of its lumen wall respectively are installed with a spring leaf retainer ring coaxial with it, and the outer ring surface of each spring leaf retainer ring and the internal face of steel sleeve are fitted, and are equipped with one group of spring leaf on each spring leaf retainer ring;
Each spring plate group is provided with three stiffness spring sheets at least, and each shape of spring plate conformance to specifications;
Described spring leaf is divided into four functional sections from top to bottom, be followed successively by guide section, cervical part of esophagus, shoulder resistance section, canned paragraph, and each Duan Jun of spring leaf is shape linearly, described spring leaf retainer ring height be 1/3rd of spring leaf canned paragraph length, the canned paragraph of spring leaf is fixed on the inner ring surface of spring leaf retainer ring and is parallel to the axis of steel sleeve, its lower end flushes with the lower end of spring leaf retainer ring, shoulder resistance section radially being inclined upwardly from outside to inside of spring leaf along steel sleeve, its cervical part of esophagus is parallel to the axis of steel sleeve, its guide section radially is inclined upwardly from the inside to the outside along steel sleeve, angle between its shoulder resistance section and the steel sleeve radial section is 15 ± 3 degree, and the length of its cervical part of esophagus is 10～15mm;
The external diameter of described drilling rod is less than the internal diameter of steel sleeve, its lower end is installed with a central column union coaxial with it, the external diameter of this union is greater than the external diameter of drilling rod, outer rim is the chamfering shape on it, its lower surface is a ring plain, and its height is less than the shoulder resistance section of each spring leaf in the lower springs sheet group and the vertical spacing between the steel sleeve tube chamber bottom surface;
Spring leaf in every group circumferentially evenly distributes along the steel sleeve inwall, and the canned paragraph of each spring leaf is enclosed a cylindrical space coaxial with steel sleeve in the same spring plate group, the diameter of this cylindrical space is greater than the external diameter 0～2mm of union, the cervical part of esophagus of each spring leaf is enclosed another cylindrical space coaxial with steel sleeve in the same spring plate group, and the diameter of this cylindrical space is greater than the external diameter 0～0.5mm of drilling rod;
Described cage cover is a column rigid cage body, the dead in line of its axis and steel sleeve, its external diameter is consistent with the external diameter of steel sleeve, its upper end is affixed with the steel sleeve lower end, its lower end cage mouth is toe-in from top to bottom, and formation one is the convergent part of inverted conical platform shape, and the outer wall and the lower end cage mouth of cage cover are coated with one deck filter screen, be installed with a steering-wheel type connector coaxial in its cage chamber, fill up filter sand in the cage cover with it;
Described pore pressure gauge is installed in the cage cover, and its body runs through the axle center of steering-wheel type connector, the dead in line of its axis and cage cover;
Described steering-wheel type connector is made up of a connecting ring and many spoke bars, and each spoke bar axial symmetry is fixed on the connecting ring, and it is affixed to connect the outer wall of mode and pore pressure gauge with point.
Further, the diameter of the convergent part bottom, lower end of described cage cover is 1/2nd of a cage cover external diameter.
Further, the last end distance steel sleeve lower end 8～10cm of described pore pressure gauge.
Further, the outer peripheral face of the outer wall of described steel sleeve and cage cover axial symmetry respectively is welded together with three and sets upright earrings, and it is consistent with the spacing that cage overlaps between the axis respectively to set upright the outer end of earrings.
Further, each the spring leaf deformation in the described lower spring sheet group is when cervical part of esophagus flushes with canned paragraph, and the screen resilience sum of each spring leaf in this spring plate group is steel sleeve, cage cover and be installed on 4～5 times of the suffered gravity sum of each parts on both.
Further, the periphery of described drilling rod is welded together with the shoulder balk ring of a central column, the last outer rim of this shoulder balk ring is the chamfering shape, and the shape of outer rim is to the greatest extent cun consistent with the geomery of outer rim on the external diameter of union and the chamfering shape thereof on its external diameter and the chamfering shape thereof, vertical spacing between its annular top surface and the union annular top surface equals up and down the vertical spacing between two spring plate group, each spring leaf deformation in two groups of spring plate group is when cervical part of esophagus flushes with canned paragraph up and down, the screen resilience sum of each spring leaf is a steel sleeve in two groups of spring plate group, cage cover and be installed on 4～5 times of the suffered gravity sum of each parts on both.
The pore pressure gauge deep layer embedded device that the utility model provides, the device gross weight and the power of transferring that puts on drilling rod can overcome the resistance that high-density slurry produced in hole wall undergauge or the hole in burying process underground, and drilling rod go into the metering scale that hole length can be used as the pore pressure gauge buried depth, can guarantee pore pressure gauge is sent to projected depth, pore pressure gauge is filled out filter sand in cage cover outside after sending to projected depth, enclose filter sand and the filter sand in the cage cover filled out and can guarantee that pore pressure gauge forms the normal delivery of the soil layer mesopore water pressure of surveying on every side, guarantees the authenticity and the reliability of test data; In addition, steel sleeve and cage cover can also avoid pore pressure gauge and signal transmssion line thereof in that to bury process underground impaired; Have that the quality buried underground is good, depth localization accurately, bury the high beneficial effect of efficient underground.
Description of drawings
Fig. 1 is that the master of the pore pressure gauge deep layer embedded device of the utility model embodiment looks cut away view;
Fig. 2 be the utility model embodiment pore pressure gauge deep layer embedded device bury schematic diagram underground.
The specific embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.
As shown in Figure 1, a kind of pore pressure gauge deep layer embedded device that the utility model embodiment is provided is characterized in that: comprise steel sleeve 1, cage cover 2, drilling rod 3 and pore pressure gauge 4;
Described steel sleeve 1 is a vertical straight tube, its upper end open and following end closure, the two ends up and down of its lumen wall respectively are installed with a spring leaf retainer ring (not shown) coaxial with it, and the internal face of the outer ring surface of each spring leaf retainer ring and steel sleeve 1 is fitted, and is equipped with one group of spring leaf on each spring leaf retainer ring;
Each spring plate group is provided with three stiffness spring sheets 5 at least, and the shape conformance to specifications of each spring leaf 5;
Described spring leaf 5 is divided into four functional sections from top to bottom, be followed successively by guide section, cervical part of esophagus, shoulder resistance section, canned paragraph, and each Duan Jun of spring leaf 5 is shape linearly, described spring leaf retainer ring height be 1/3rd of spring leaf canned paragraph length, the canned paragraph of spring leaf 5 is fixed on the inner ring surface of spring leaf retainer ring and is parallel to the axis of steel sleeve 1, its lower end flushes with the lower end of spring leaf retainer ring, shoulder resistance section radially being inclined upwardly from outside to inside of spring leaf 5 along steel sleeve 1, its cervical part of esophagus is parallel to the axis of steel sleeve 1, its guide section radially is inclined upwardly from the inside to the outside along steel sleeve 1, angle between its shoulder resistance section and the steel sleeve radial section is 15 ± 3 degree, and the length of its cervical part of esophagus is 10～15mm;
The external diameter of described drilling rod 3 is less than the internal diameter of steel sleeve 1, its lower end is installed with a central column union 6 coaxial with it, the external diameter of this union 6 is greater than the external diameter of drilling rod 3, outer rim is the chamfering shape on it, its lower surface is a ring plain, and its height is less than the shoulder resistance section of each spring leaf 5 in the lower springs sheet group and the vertical spacing between the steel sleeve tube chamber bottom surface;
Spring leaf 5 in every group circumferentially evenly distributes along steel sleeve 1 inwall, and the canned paragraph of each spring leaf 5 is enclosed a cylindrical space coaxial with steel sleeve 1 in the same spring plate group, the diameter of this cylindrical space is greater than the external diameter 0～2mm of union 6, the cervical part of esophagus of each spring leaf 5 is enclosed another cylindrical space coaxial with steel sleeve 1 in the same spring plate group, and the diameter of this cylindrical space is greater than the external diameter 0～0.5mm of drilling rod 3;
Described cage cover 2 is column rigid cage bodies, the dead in line of its axis and steel sleeve 1, its external diameter is consistent with the external diameter of steel sleeve 1, its upper end is affixed with steel sleeve 1 lower end, and its lower end cage mouth is toe-in from top to bottom, and formation one is the convergent part of inverted conical platform shape, and the diameter of this convergent part bottom is 1/2nd of a cage cover external diameter, the outer wall and the lower end cage mouth of cage cover 2 are coated with one deck filter screen, are installed with a steering-wheel type connector 7 coaxial with it in its cage chamber, fill up filter sand in the cage cover;
Described pore pressure gauge 4 is installed in the cage cover 2, and its body runs through the axle center of steering-wheel type connector 7, the dead in line of its axis and cage cover 2, end distance steel sleeve lower end 8～10cm on it;
Described steering-wheel type connector 7 is made up of a connecting ring and many spoke bars, and each spoke bar axial symmetry is fixed on the connecting ring, and it is affixed to connect the outer wall of mode and pore pressure gauge 4 with point.
Among the utility model embodiment, the outer peripheral face of the outer wall of described steel sleeve 1 and cage cover 2 axial symmetry respectively is welded together with three and sets upright earrings 8, and it is consistent with the spacing that cage overlaps between the axis respectively to set upright the outer end of earrings 8.
Among the utility model embodiment, the length of described steel sleeve is more than or equal to 50cm, spacing between the upper end of steel sleeve and the cage cover lower end is greater than 1m, the external diameter of steel sleeve and cage cover is 100～110mm, the length of cage cover is greater than length 20 ± 2 cm of pore pressure gauge, and every group of spring plate group has four spring leafs.
Among the utility model embodiment, each spring leaf 5 deformation in the described lower spring sheet group are when cervical part of esophagus flushes with canned paragraph, the screen resilience sum of each spring leaf 5 in this spring plate group is steel sleeve 1, cage covers 2 and be installed on 4～5 times of the suffered gravity sum of each parts on both.
During the utility model embodiment practical application, also can put the shoulder balk ring of a central column in the periphery weldering of drilling rod, the last outer rim of this shoulder balk ring is the chamfering shape, and the shape of outer rim is to the greatest extent cun consistent with the geomery of outer rim on the external diameter of union 6 and the chamfering shape thereof on its external diameter and the chamfering shape thereof, vertical spacing between its annular top surface and the union annular top surface equals up and down the vertical spacing between two spring plate group, this moment up and down each spring leaf 5 deformation in two groups of spring plate group when cervical part of esophagus flushes with canned paragraph, the screen resilience sum of each spring leaf 5 is steel sleeves 1 in two groups of spring plate group, cage cover 2 and be installed on 4～5 times of the suffered gravity sum of each parts on both.
As shown in Figure 2, the utility model embodiment specifically to bury step underground as follows:
1) bury underground at pore pressure gauge and a little be drilled with boring, the diameter of this boring is than setting upright the big 20～30mm of diameter that the earrings outer rim is constituted, and the boring aperture that is drilled with among the utility model embodiment is for more than or equal to 170～180mm;
2) drilling rod is inserted in the steel sleeve inner chamber from steel sleeve upper end open portion, union until its lower end touches steel sleeve tube chamber bottom, union successively squeezes each spring leaf of opening in two groups of spring plate group during insertion, and each spring leaf that union touches in the two groups of spring plate group in back, steel sleeve tube chamber bottom all returns back to original position;
3) utilize drilling rod earlier steel sleeve, cage cover and each parts of being installed on both to be lifted from ground, move to directly over the boring again, and then put into boring down, until pore pressure gauge arrival predetermined location;
Carry on drilling rod in the process, because the jam power that the spring plate group of steel sleeve lumen wall lower end acts on union is greater than steel sleeve, cage cover and be installed on the suffered gravity sum of each parts on both, so drilling rod can not deviate from from steel sleeve;
4) fill out earlier filter sand 9 to steel sleeve upper end and submerge in the filter sand 9, fill clay sealing sealing layer 10 with diameter smaller or equal to the mud ball of 40mm at filter sand 9 end faces then, and the thickness of clay sealing sealing layer 10 is more than or equal to 1.5m in cage cover outside;
Wherein, the filter sand bottom is lower than cage cover lower end more than 0.5 meter, and the filter sand top exceeds the steel sleeve upper end more than 1.0 meters;
5) deviate from steel sleeve with carrying on the drilling rod to union, on drilling rod, carry in the process, because the filter sand that cage cover outside is filled out and the clay sealing sealing layer of filter sand end face act on the frictional resistance of steel sleeve and cage cover acts on union greater than spring plate group jam power, therefore union can squeeze and open spring plate group and deviate from smoothly, and steel sleeve and cage overlap not can with on move;
6) with earth boring is backfilled to the aperture, the burying underground promptly to accuse of pore pressure gauge finishes.
Claims (6)
1. a pore pressure gauge deep layer embedded device is characterized in that: comprise steel sleeve, cage cover, drilling rod and pore pressure gauge;
Described steel sleeve is a vertical straight tube, its upper end open and following end closure, the two ends up and down of its lumen wall respectively are installed with a spring leaf retainer ring coaxial with it, and the outer ring surface of each spring leaf retainer ring and the internal face of steel sleeve are fitted, and are equipped with one group of spring leaf on each spring leaf retainer ring;
Each spring plate group is provided with three stiffness spring sheets at least, and each shape of spring plate conformance to specifications;
Described spring leaf is divided into four functional sections from top to bottom, be followed successively by guide section, cervical part of esophagus, shoulder resistance section, canned paragraph, and each Duan Jun of spring leaf is shape linearly, described spring leaf retainer ring height be 1/3rd of spring leaf canned paragraph length, the canned paragraph of spring leaf is fixed on the inner ring surface of spring leaf retainer ring and is parallel to the axis of steel sleeve, its lower end flushes with the lower end of spring leaf retainer ring, shoulder resistance section radially being inclined upwardly from outside to inside of spring leaf along steel sleeve, its cervical part of esophagus is parallel to the axis of steel sleeve, its guide section radially is inclined upwardly from the inside to the outside along steel sleeve, angle between its shoulder resistance section and the steel sleeve radial section is 15 ± 3 degree, and the length of its cervical part of esophagus is 10～15mm;
The external diameter of described drilling rod is less than the internal diameter of steel sleeve, its lower end is installed with a central column union coaxial with it, the external diameter of this union is greater than the external diameter of drilling rod, outer rim is the chamfering shape on it, its lower surface is a ring plain, and its height is less than the shoulder resistance section of each spring leaf in the lower springs sheet group and the vertical spacing between the steel sleeve tube chamber bottom surface;
Spring leaf in every group circumferentially evenly distributes along the steel sleeve inwall, and the canned paragraph of each spring leaf is enclosed a cylindrical space coaxial with steel sleeve in the same spring plate group, the diameter of this cylindrical space is greater than the external diameter 0～2mm of union, the cervical part of esophagus of each spring leaf is enclosed another cylindrical space coaxial with steel sleeve in the same spring plate group, and the diameter of this cylindrical space is greater than the external diameter 0～0.5mm of drilling rod;
Described cage cover is a column rigid cage body, the dead in line of its axis and steel sleeve, its external diameter is consistent with the external diameter of steel sleeve, its upper end is affixed with the steel sleeve lower end, its lower end cage mouth is toe-in from top to bottom, and formation one is the convergent part of inverted conical platform shape, and the outer wall and the lower end cage mouth of cage cover are coated with one deck filter screen, be installed with a steering-wheel type connector coaxial in its cage chamber, fill up filter sand in the cage cover with it;
Described pore pressure gauge is installed in the cage cover, and its body runs through the axle center of steering-wheel type connector, the dead in line of its axis and cage cover;
Described steering-wheel type connector is made up of a connecting ring and many spoke bars, and each spoke bar axial symmetry is fixed on the connecting ring, and it is affixed to connect the outer wall of mode and pore pressure gauge with point.
2. pore pressure gauge deep layer embedded device according to claim 1 is characterized in that: the diameter of the convergent part bottom, lower end of described cage cover is 1/2nd of a cage cover external diameter.
3. pore pressure gauge deep layer embedded device according to claim 1 is characterized in that: the last end distance steel sleeve lower end 8～10cm of described pore pressure gauge.
4. pore pressure gauge deep layer embedded device according to claim 1, it is characterized in that: the outer peripheral face of the outer wall of described steel sleeve and cage cover axial symmetry respectively is welded together with three and sets upright earrings, and it is consistent with the spacing that cage overlaps between the axis respectively to set upright the outer end of earrings.
5. pore pressure gauge deep layer embedded device according to claim 1, it is characterized in that: each the spring leaf deformation in the described lower spring sheet group is when cervical part of esophagus flushes with canned paragraph, the screen resilience sum of each spring leaf in this spring plate group is steel sleeve, a cage cover and be installed on 4～5 times of the suffered gravity sum of each parts on both.
6. pore pressure gauge deep layer embedded device according to claim 1, it is characterized in that: the periphery of described drilling rod is welded together with the shoulder balk ring of a central column, the last outer rim of this shoulder balk ring is the chamfering shape, and the shape of outer rim is to the greatest extent cun consistent with the geomery of outer rim on the external diameter of union and the chamfering shape thereof on its external diameter and the chamfering shape thereof, vertical spacing between its annular top surface and the union annular top surface equals up and down the vertical spacing between two spring plate group, each spring leaf deformation in two groups of spring plate group is when cervical part of esophagus flushes with canned paragraph up and down, the screen resilience sum of each spring leaf is a steel sleeve in two groups of spring plate group, cage cover and be installed on 4～5 times of the suffered gravity sum of each parts on both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206859618U CN201933477U (en) | 2010-12-29 | 2010-12-29 | Deep embedding device for pore pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206859618U CN201933477U (en) | 2010-12-29 | 2010-12-29 | Deep embedding device for pore pressure gauge |
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| Publication Number | Publication Date |
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| CN201933477U true CN201933477U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206859618U Expired - Lifetime CN201933477U (en) | 2010-12-29 | 2010-12-29 | Deep embedding device for pore pressure gauge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195045A (en) * | 2013-03-25 | 2013-07-10 | 长沙理工大学 | Device for embedding multiple pore water pressure gauges through one hole |
| CN103195044A (en) * | 2013-03-25 | 2013-07-10 | 长沙理工大学 | Pore water pressure gauge deep-layer embedded device |
| CN103195046A (en) * | 2013-03-25 | 2013-07-10 | 长沙理工大学 | Method for embedding multiple pore water pressure gauges through one hole |
| CN105738010A (en) * | 2016-03-07 | 2016-07-06 | 湖北省电力勘测设计院 | Penetration type soil pressure box burying method in deep soft soil and burying device |
| CN107503387A (en) * | 2017-08-21 | 2017-12-22 | 水利部农村电气化研究所 | A kind of application method of sea wall explosive replacement construction of soft soil treatment quality detection device |
| CN110411646A (en) * | 2019-07-09 | 2019-11-05 | 中铁十四局集团大盾构工程有限公司 | Formation pore hydraulic pressure force test device, production method and its application method after a kind of shield tunnel wall |
-
2010
- 2010-12-29 CN CN2010206859618U patent/CN201933477U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195045A (en) * | 2013-03-25 | 2013-07-10 | 长沙理工大学 | Device for embedding multiple pore water pressure gauges through one hole |
| CN103195044A (en) * | 2013-03-25 | 2013-07-10 | 长沙理工大学 | Pore water pressure gauge deep-layer embedded device |
| CN103195046A (en) * | 2013-03-25 | 2013-07-10 | 长沙理工大学 | Method for embedding multiple pore water pressure gauges through one hole |
| CN103195046B (en) * | 2013-03-25 | 2015-08-26 | 长沙理工大学 | An a kind of hole concrete dynamic modulus WG method for embedding |
| CN103195044B (en) * | 2013-03-25 | 2015-09-02 | 长沙理工大学 | A kind of deep embedding device for pore pressure gauge |
| CN103195045B (en) * | 2013-03-25 | 2016-02-03 | 长沙理工大学 | An a kind of hole concrete dynamic modulus WG embedded device |
| CN105738010A (en) * | 2016-03-07 | 2016-07-06 | 湖北省电力勘测设计院 | Penetration type soil pressure box burying method in deep soft soil and burying device |
| CN105738010B (en) * | 2016-03-07 | 2018-04-10 | 湖北省电力勘测设计院 | Penetration type soil pressure cell method for embedding and device in deep layer weak soil |
| CN107503387A (en) * | 2017-08-21 | 2017-12-22 | 水利部农村电气化研究所 | A kind of application method of sea wall explosive replacement construction of soft soil treatment quality detection device |
| CN110411646A (en) * | 2019-07-09 | 2019-11-05 | 中铁十四局集团大盾构工程有限公司 | Formation pore hydraulic pressure force test device, production method and its application method after a kind of shield tunnel wall |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201700 Shanghai city Qingpu District No. 599 new road, building 1, room 869 Patentee after: SHANGHAI GUANGLIAN ENVIRONMENTAL & GEOTECHNICAL ENGINEERING CO., LTD. Address before: 201700 Shanghai city Qingpu District No. 599 new road, building 1, room 869 Patentee before: Shanghai Guanglian Building Development Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |