CN104153340B - One is soil body vibration velocity and pore water pressure sensing equipment and mounting method under water - Google Patents
One is soil body vibration velocity and pore water pressure sensing equipment and mounting method under water Download PDFInfo
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- CN104153340B CN104153340B CN201410348659.6A CN201410348659A CN104153340B CN 104153340 B CN104153340 B CN 104153340B CN 201410348659 A CN201410348659 A CN 201410348659A CN 104153340 B CN104153340 B CN 104153340B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 239000011148 porous material Substances 0.000 title claims abstract description 91
- 239000002689 soil Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004513 sizing Methods 0.000 claims description 2
- -1 by the second link Substances 0.000 abstract 1
- 238000005213 imbibition Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
One is soil body vibration velocity and pore water pressure sensing equipment and mounting method under water, by the second link, pore water pressure sensor and three-dimensional velocity sensor are fixed together, make above-mentioned second link, three-dimensional velocity sensor is arranged in boring, pore water pressure sensor is made to be arranged in the soil body of foot of hole, above pore water pressure sensor, place expansion mud ball, and make three-dimensional velocity sensor be arranged in expansion mud ball.When after the imbibition of expansion mud ball, just make three-dimensional velocity sensor fixing in the borehole, and pore water pressure sensor is come with the water body of boring top is isolated.The present invention accurately can install two sensors in same boring, and can measure the soil vibration speed in required direction and the pore water pressure of required soil layer.
Description
Technical field
The present invention relates to a kind of soil body vibration velocity and pore water pressure sensing equipment, relate to a kind of Accurate Determining vibration velocity of the soil body and equipment & installation method of pore water pressure under water specifically.
Background technology
Nowadays, in a lot of construction of hydro project process, the vibration problems such as piling, explosion can be related to.For guaranteeing the safety of Adjacent Buildings in work progress, need the soil body be vibrated and be stablized and monitor, relating generally to soil body vibration velocity and pore water pressure mensuration.Measure soil body vibration velocity and pore water pressure by conventional sensors and there is convenience, the feature such as accurate, economic, quick.In this respect, sensor obtains fully application and further investigation.But three-dimensional velocity sensor is imbedded under water after the soil body, sensor fixing and how to ensure the vibration measuring direction of the sensor difficult point that be equipment install consistent with surveying direction, yet there are no report.
Three-dimensional velocity sensor and pore water pressure sensor being connected into an entirety is placed under water in the soil body, and is divided by two sensors compared with hole installs in conventional mounting arrangements, can save boring cost and engineering time.But two sensors are installed simultaneously, the connection needing to solve sensor and fixing, the orientation of three-dimensional velocity sensor, the shutoff problem of pore water pressure sensor under water, make conventional mounting method to complete.The application, by developing the mounting method of a kind of three-dimensional velocity sensor of the soil body under water and pore water pressure sensor, overcomes above-mentioned difficulties, realizes same hole and measures soil body vibration velocity and pore water pressure.
Summary of the invention
The technical problem that the present invention solves is for be placed under water in the soil body during certain depth simultaneously by three-dimensional velocity sensor and pore water pressure sensor, by new design on the basis of original sensor device, the vibration measuring direction of three-dimensional velocity sensor can be adjusted, the shutoff of the fixing of three-dimensional velocity sensor and pore water pressure sensor can be completed again simultaneously.
One is soil body vibration velocity and pore water pressure sensing equipment under water, comprise the first link, three-dimensional velocity sensor, expansion mud ball, second link, pore water pressure sensor, boring, the soil body, data collecting instrument, surrounding and the bottom of boring are the soil body, the top of boring is empty, pore water pressure sensor is arranged in the soil body of foot of hole, first link and the second link are hollow sections, the bottom of three-dimensional velocity sensor is provided with lower through-hole, the top of three-dimensional velocity sensor is provided with through hole, between upper through hole and lower through-hole, there is passage, the lower end of the second link is fixedly connected with the tail end of pore water pressure sensor, the upper end of the second link is fixedly connected with the lower through-hole of three-dimensional velocity sensor, the bottom of the first link is fixedly connected with the upper through hole of three-dimensional velocity sensor, first outgoing cable of pore water pressure sensor is successively from the second link, three-dimensional velocity sensor, first link passes and passes from the top of the first link, second outgoing cable of three-dimensional velocity sensor passes from the first link and passes from the top of the first link, first outgoing cable is connected with data collecting instrument with the second outgoing cable, expansion mud ball is arranged in boring and is in the top of the foot of hole soil body, three-dimensional velocity sensor is arranged in expansion mud ball.
As the further improvement of the technical program, before expansion mud ball expands, the sealed depth H of expansion mud ball is greater than 1m.
As the further improvement of the technical program, also comprise at least one joint tube connector, tube connector is hollow section, and the upper end of the first link is connected with the bottom of tube connector, first outgoing cable and the second outgoing cable through tube connector, and pass from the top of tube connector.
As the further improvement of the technical program, the top of tube connector or outer wall has a groove at least.
Mounting method according to said determination equipment:
The first step: accomplish fluently boring in the soil body;
Second step: the first outgoing cable is entered in three-dimensional velocity sensor through the second link, and the lower through-hole of three-dimensional velocity sensor and the tail end of pore water pressure sensor are fixed by the second link be connected;
3rd step: the first outgoing cable and the second outgoing cable are passed from the first link, and the upper through hole of three-dimensional velocity sensor is fixedly connected with the first link;
4th step: the vibration velocity of the soil body under water connected and pore water pressure sensing equipment are put into boring, and make pore water pressure sensor be positioned at the bottom of boring;
5th step: rotate the first link and make three-dimensional velocity sensor to surveying direction;
6th step: apply downward pressure on the first link, makes pore water pressure sensor insert in the soil body of foot of hole;
7th step: the bottom toward boring pours expansion mud ball into, and expansion mud ball is positioned at the top of the soil body, and make the top of pore water pressure sensor by shutoff, three-dimensional velocity sensor is arranged in expansion mud ball, expansion mud ball meets water sizing one week;
8th step: make the first outgoing cable, the second outgoing cable is connected with data collecting instrument.
As the further improvement of the technical program, before expansion mud ball expands, the sealed depth H of expansion mud ball is greater than 1m.
Beneficial effect
:three-dimensional velocity sensor and pore water pressure sensor link together by the present invention, the vibration measuring direction of three-dimensional velocity sensor can be adjusted, pore water pressure sensor can be placed into again in the soil layer of desired depth and its top of shutoff, three-dimensional velocity sensor be can also fully fix, thus the required soil vibration speed in direction and the pore water pressure of required soil layer measured.Meanwhile, this mounting method completes soil body vibration velocity and pore water pressure measures in same hole, saves construction cost and set-up time.The present invention is simple to operate, easy to use, can be widely used in the mensuration work of soil body vibration velocity and pore water pressure under water.
Accompanying drawing explanation
Fig. 1 is one soil body vibration velocity and pore water pressure sensing equipment schematic diagram under water.
Fig. 2 is tube connector top view.
Exemplary velocity profile figure when Fig. 3 is the pile anchoring recorded.
Fig. 4 is the curve map corresponding to pore water pressure data form.
Fig. 5 is the soil vibration hodograph recorded.
Fig. 6 is the pore water pressure datagram that different time records.
Reference numeral title is as follows:
1, the first outgoing cable; 2, tube connector; 3, the first link; 4, three-dimensional velocity sensor; 5, expansion mud ball; 6, the second link; 7, pore water pressure sensor; 8, hole; 9, groove; 10, the second outgoing cable; 11, the soil body.
Detailed description of the invention
As shown in Figure 1.One is soil body vibration velocity and pore water pressure sensing equipment under water, comprises the first outgoing cable 1, tube connector 2, first link 3, three-dimensional velocity sensor 4, expansion mud ball 5, second link 6, pore water pressure sensor 7, boring the 8, second outgoing cable 10, the soil body 11, data collecting instrument.
Surrounding and the bottom of boring 8 are the soil body 11, and the top of boring 8 is empty.Pore water pressure sensor 7 is arranged in the soil body 11 bottom boring 8.Pore water pressure sensor 7 is for measuring the pore water pressure in the soil body 11 bottom boring 8.First outgoing cable 1 of pore water pressure sensor 7 is positioned at the tail end of pore water pressure sensor 7.The tail end (upper end in Fig. 1) of pore water pressure sensor 7 is provided with internal thread or external screw thread, second link 6 is hollow section, the lower end of the second link 6 is provided with the screw thread matched with the internal thread on pore water pressure sensor 7 tail end or external screw thread, and lower end and the pore water pressure sensor 7 of the second link 6 are threaded connection.The lower end of certain second link 6 also can adopt other known connected mode to be fixedly connected with pore water pressure sensor 7.Second link 6 and pore water pressure sensor 7 adopt the mode be threaded to be conveniently install, and make the two be fixed together.First outgoing cable 1 of pore water pressure sensor 7 is drawn from the second link 6.
Three-dimensional velocity sensor 4 is all provided with sensor in x, y, z tri-directions, can measure x, the vibration velocity in y, z tri-directions.The bottom of three-dimensional velocity sensor 4 is provided with lower through-hole, and lower through-hole is preferably arranged on the middle part of bottom.The top of three-dimensional velocity sensor 4 is provided with through hole, and upper through hole is preferably arranged on the middle part at top.There is certain space at the internal reservation of three-dimensional velocity sensor 4, that is go up between through hole and lower through-hole and there is passage, penetrate from the lower through-hole of bottom to facilitate the first outgoing cable 1 and pass from the upper through hole at top.The lower through-hole place of three-dimensional velocity sensor 4 is provided with internal thread or external screw thread, the upper end of the second link 6 be provided with bottom three-dimensional velocity sensor 4 on internal thread or the screw thread that matches of external screw thread, the lower through-hole bottom the upper end of the second link 6 and three-dimensional velocity sensor 4 is threaded connection.The upper end of certain second link 6 also can adopt other known connected mode to be fixedly connected with the lower through-hole of three-dimensional velocity sensor 4.Second link 6 and three-dimensional velocity sensor 4 adopt the mode be threaded to be conveniently install, and make the two be fixed together.Second link 6 is positioned at the below of lower through-hole bottom three-dimensional velocity sensor 4, penetrates three-dimensional velocity sensor 4 to facilitate the first outgoing cable 1.First outgoing cable 1 penetrates from the lower through-hole bottom three-dimensional velocity sensor 4 after passing from the second link 6, and passes from the upper through hole at three-dimensional velocity sensor 4 top.
First link 3 is hollow section.The bottom of the first link 3 is fixedly connected with the upper through hole at three-dimensional velocity sensor 4 top.On the top of three-dimensional velocity sensor 4, through hole is provided with internal thread or external screw thread, the lower end of the first link 3 is provided with the screw thread matched with the internal thread on three-dimensional velocity sensor 4 top or external screw thread, and the first link 3 is threaded connection with three-dimensional velocity sensor 4.Certain first link 3 also can adopt other known connected mode to be fixedly connected with three-dimensional velocity sensor 4.First link 3 and three-dimensional velocity sensor 4 adopt the mode be threaded to be conveniently install, and make the two be fixed together.First link 3 is positioned at the top of through hole on three-dimensional velocity sensor 4 top.First outgoing cable 1 penetrates the first link 3 from through hole three-dimensional velocity sensor 4 top, and the second outgoing cable 10 of three-dimensional velocity sensor 4 is also that through hole penetrates the first link 3 from three-dimensional velocity sensor 4 top.
8 be generally positioned at seabed owing to holing, at least need a joint tube connector 2 to be connected with the first link 3, certain tube connector 2 can make more piece link together use.The upper end of the first link 3 is connected with the bottom of tube connector 2, and in order to easy for installation and dismounting, the two can adopt and be threaded.After sensing equipment has been buried underground, tube connector 2 will have been thrown off with the first link 3, and tube connector 2 is taken out from boring 8.In general when using more piece tube connector 2, the tube connector 2 that a bottom joint tube connector 2(is connected with the first link 3) to adopt with the first link 3 and be threaded, adopt screw to be fixedly connected with between all the other tube connectors 2.Like this from boring 8 during fech connection pipe 2, as long as the pipe 2 that is rotatably connected just can take out tube connector 2 from boring 8.Tube connector 2 is also hollow section, first outgoing cable 1 and the second outgoing cable 10 pass from the first link 3, that is the first outgoing cable 1 and the second outgoing cable 10 pass from the top of the first link 3, and through tube connector 2, pass from the top of tube connector 2.As shown in Figure 2, the top of tube connector 2 or outer wall have a groove 9 at least, the top of tube connector 2 is provided with four along the circumferential direction evenly distributed grooves 9 in the present embodiment.Groove 9 on tube connector 2 is used to directed.Specifically, three-dimensional velocity sensor 4 can measure x, y, the vibration velocity in z tri-directions, assuming that when tube connector 2 with the first link 3 by screwed tight time, and the first link 3 and three-dimensional velocity sensor 4 also by screwed tight time, x on groove 9 and three-dimensional velocity sensor 4 is α degree to the angle between vibration measuring direction, when needing to make the x on three-dimensional velocity sensor 4 consistent with direction need be surveyed to vibration measuring direction, as long as first the groove 9 on tube connector 2 is turned to standard need survey direction, and then tube connector 2 is rotated negative α degree, x so on three-dimensional velocity sensor 4 to vibration measuring direction just with need to survey direction consistent.That is because tube connector 2 and three-dimensional velocity sensor 4 are fixed together, the object that pipe 2 can reach the vibration measuring direction of adjustment three-dimensional velocity sensor 4 is rotationally connected.So groove 9 is preferably positioned at the top of tube connector 2, can certainly be positioned on the outer wall of tube connector 2, as long as easy to use just passable.
Expansion mud ball 5 is the mud balls made with swell soil, and expansion mud ball 5 is met water and just can be expanded.Expansion mud ball 5 is positioned at the top of boring 8 bottom soil body 11, is namely positioned at above pore water pressure sensor 7, and expansion mud ball 5 is arranged in boring 8.When behind bottom expansion mud ball 5 being put into boring 8, expansion mud ball 5 water-swellable, pore water pressure sensor 7 is completely cut off with the top of boring 8, thus ensures that pore water pressure sensor 7 records the pore water pressure that pore water pressure is place soil layer, but not from the water pressure of boring 8 top water body.In order to make expansion mud ball 5 effectively make pore water pressure sensor 7 completely cut off with the top of boring 8, expansion mud ball 5 sealed depth H is before inflation greater than 1 meter, as long as in general just passable slightly larger than 1 meter, certainly boring 8 is filled up also passable.In general, the length of the first link 3 is greater than 2 meters, when expansion mud ball 5 sealed depth H is before inflation slightly larger than 1 meter, so expansion mud ball 5 also can not block the upper end of the first link 3 upon inflation, throws off from the first link 3 to facilitate tube connector 2 after expansion mud ball 5 is shaped.Three-dimensional velocity sensor 4 is arranged in expansion mud ball 5, thus three-dimensional velocity sensor 4 is fixed in boring 8.
First outgoing cable 1 is connected with data collecting instrument with the second outgoing cable 10.Be used for observing and record the reading of three-dimensional velocity sensor 4 and pore water pressure sensor 7.
The said equipment is applied to measure soil body vibration velocity and pore water pressure under water.The installation steps of the said equipment are as follows.
The first step: accomplish fluently boring 8 in the soil body 11.
Second step: three-dimensional velocity sensor 4 is connected by the second link 6 with pore water pressure sensor 7, and the first outgoing cable 1 is entered in three-dimensional velocity sensor 4 through the second link 6.
3rd step: the upper through hole of three-dimensional velocity sensor 4 is connected with the first link 3, and the first outgoing cable 1 of pore water pressure sensor 7 and the second outgoing cable 10 of three-dimensional velocity sensor 4 are passed from the first link 3.
4th step: the bottom of tube connector 2 is connected with the top of the first link 3, and make the second outgoing cable 10 of the first outgoing cable 1 of pore water pressure sensor 7 and three-dimensional velocity sensor 4 pass from the first link 3 and pass from tube connector 2, if the length of boring 8 is greater than the length of tube connector 2, more piece tube connector 2 can be used to interconnect, make the top of top higher than boring 8 of a joint tube connector 2 topmost.
5th step: the vibration velocity of the soil body under water connected and pore water pressure sensing equipment are put into boring 8, and make pore water pressure sensor 7 be positioned at the bottom of boring 8.
6th step: first make the groove 9 on tube connector 2 aim at the direction of vibration needing to measure, then negative α degree is rotated, make to need the direction of vibration of measurement identical with the direction of vibration that can measure of three-dimensional velocity sensor 4, that is being rotationally connected pipe 2 makes three-dimensional velocity sensor 4 to surveying direction, certainly we also can rotate the first link 3 make need measure direction of vibration identical with the direction of vibration that can measure of three-dimensional velocity sensor 4, essentially because tube connector 2 and the first link 3 link together, which rotates is all the same.
7th step: apply downward pressure on tube connector 2, in the soil body 11 that pore water pressure sensor 7 is inserted bottom boring 8, pore water pressure in the soil body 11 making pore water pressure sensor 7 can measure bottom boring 8, certainly we also any one (comprising the first link 3) on sensing equipment can apply downward pressure, in the soil body 11 that pore water pressure sensor 7 is inserted bottom boring 8.
8th step: the bottom toward boring 8 pours expansion mud ball 5 into, expansion mud ball 5 is positioned at the top of the soil body 11 bottom boring 8, make the top of pore water pressure sensor 7 by shutoff, the expand sealed depth H of front expansion mud ball 5 of expansion mud ball 5 is greater than 1m, three-dimensional velocity sensor 4 is arranged in expansion mud ball 5, expansion mud ball 5, after meeting water and shaping one week, makes tube connector 2 and the first link 3 throw off; Expansion mud ball 5 shutoff is poured on pore water pressure sensor 7 top into, the expand sealed depth H of front expansion mud ball 5 of expansion mud ball 5 is greater than 1m, such shutoff process can ensure that the measured value of pore water pressure sensor 7 is the pore water pressure of place soil layer, the impact from boring 8 internal upper part water body can not be subject to, expansion mud ball 5 can also fully fix three-dimensional velocity sensor 4 simultaneously, three-dimensional velocity sensor 4 is linked together by the soil body 11 around expansion mud ball 5 and boring 8, thus the three-way vibration speed of the Measurement accuracy soil body 11.
9th step: be rotatably connected pipe 2, makes tube connector 2 and the first link 3 throw off, is withdrawn from by tube connector 2 from boring 8.
Tenth step: the first outgoing cable 1, second outgoing cable 10 is connected with data collecting instrument.Be used for observing and record the reading of three-dimensional velocity sensor 4 and pore water pressure sensor 7.
So far two complete successful installations of sensor under water in the soil body 11, can carry out piling vibration experiment in respective distance.Now, the reading of three-dimensional velocity sensor 4 and pore water pressure sensor 7 is recorded.Three-way vibration velocity measuring whole process runs through piling process, real-time monitored three-way vibration rate curve, and pore water pressure detects twice normal every day.
This vibration velocity collection adopts domestic state-of-the-art dynamic acquisition test macro DH5920, its multi-channel parallel synchronous sampling technique is ripe and stability is better, the highest sampling rate of every passage reaches 128kHz, meet vibration, impact, the multiple test of noise, and sampling is convenient, there is abundant Data Analysis Services function, the speed time-history curves of sensing station in test process, can be obtained in real time.The vibration velocity data recorded are shown in Fig. 5, and during the pile anchoring recorded, exemplary velocity profile is shown in Fig. 3.
This pore water pressure collection adopts the XP-02 type type vibration wire frequency recorder of precision <0.lHz, the change of frequency of direct mensuration hole potamometer, according to the pore water pressure of demarcation and the relation curve of frequency, obtained the pore water pressure force value of this measuring point by the frequency of Measured pore water pressure.The pore water pressure force data of the different time points recorded is shown in Fig. 6, and corresponding pore water pressure force curve is shown in Fig. 4.
Data by this mounting method is measured: Fig. 5, Fig. 6 and Fig. 3, Fig. 4, the change of actual soil vibration speed and pore water pressure when can reflect piling vibration.Illustrate that this equipment and mounting method thereof successfully achieve the successful installation of three-dimensional velocity sensor 4 and pore water pressure sensor 7 in water-bed boring 8 and operate.
The undeclared part related in the present invention is same as the prior art or adopt prior art to be realized.
Claims (6)
1. soil body vibration velocity and pore water pressure sensing equipment under water, it is characterized in that: comprise the first link (3), three-dimensional velocity sensor (4), expansion mud ball (5), second link (6), pore water pressure sensor (7), boring (8), the soil body (11), data collecting instrument, surrounding and the bottom of boring (8) are the soil body (11), the top of boring (8) is empty, pore water pressure sensor (7) is arranged in the soil body (11) of boring (8) bottom, first link (3) and the second link (6) are hollow sections, the bottom of three-dimensional velocity sensor (4) is provided with lower through-hole, the top of three-dimensional velocity sensor (4) is provided with through hole, between upper through hole and lower through-hole, there is passage, the lower end of the second link (6) is fixedly connected with the tail end of pore water pressure sensor (7), the upper end of the second link (6) is fixedly connected with the lower through-hole of three-dimensional velocity sensor (4), the bottom of the first link (3) is fixedly connected with the upper through hole of three-dimensional velocity sensor (4), first outgoing cable (1) of pore water pressure sensor (7) is successively from the second link (6), three-dimensional velocity sensor (4), first link (3) passes and passes from the top of the first link (3), second outgoing cable (10) of three-dimensional velocity sensor (4) connects from first
Parts (3) pass and pass from the top of the first link (3), first outgoing cable (1) is connected with data collecting instrument with the second outgoing cable (10), expansion mud ball (5) is arranged in boring (8) and is in the top of boring (8) bottom soil body (11), and three-dimensional velocity sensor (4) is arranged in expansion mud ball (5).
2. sensing equipment according to claim 1, is characterized in that: before expansion mud ball (5) expands, the sealed depth of expansion mud ball (5) is greater than 1m.
3. sensing equipment according to claim 1, it is characterized in that: also comprise at least one joint tube connector (2), tube connector (2) is hollow section, the upper end of the first link (3) is connected with the bottom of tube connector 2, first outgoing cable (1) and the second outgoing cable (10) through tube connector (2), and pass from the top of tube connector (2).
4. sensing equipment according to claim 3, is characterized in that: the top of tube connector (2) or outer wall have a groove (9) at least.
5. the mounting method of sensing equipment according to claim 1, is characterized in that:
The first step: accomplish fluently boring (8) in the soil body (11);
Second step: the first outgoing cable (1) is entered in three-dimensional velocity sensor (4) through the second link (6), and the tail end of the lower through-hole of three-dimensional velocity sensor (4) and pore water pressure sensor (7) is fixed by the second link (6) be connected;
3rd step: the first outgoing cable (1) and the second outgoing cable (10) are passed from the first link (3), and the upper through hole of three-dimensional velocity sensor (4) is fixedly connected with the first link (3);
4th step: the vibration velocity of the soil body under water connected and pore water pressure sensing equipment are put into hole (8), and make pore water pressure sensor (7) be positioned at the bottom of boring (8);
5th step: rotate the first link (3) and make three-dimensional velocity sensor (4) to surveying direction;
6th step: at the pressure that the upper applying of the first link (3) is downward, makes pore water pressure sensor (7) insert in the soil body (11) of boring (8) bottom;
7th step: the bottom toward boring (8) pours expansion mud ball (5) into, expansion mud ball (5) is positioned at the top of the soil body (11) of boring (8) bottom, and three-dimensional velocity sensor (4) is arranged in expansion mud ball (5), and expansion mud ball (5) meets water sizing one week;
8th step: make the first outgoing cable (1), the second outgoing cable (10) is connected with data collecting instrument.
6. the mounting method of sensing equipment according to claim 5, is characterized in that: before expansion mud ball (5) expands, the sealed depth of expansion mud ball (5) is greater than 1m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410348659.6A CN104153340B (en) | 2014-07-22 | 2014-07-22 | One is soil body vibration velocity and pore water pressure sensing equipment and mounting method under water |
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| CN201410348659.6A CN104153340B (en) | 2014-07-22 | 2014-07-22 | One is soil body vibration velocity and pore water pressure sensing equipment and mounting method under water |
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| CN104153340B true CN104153340B (en) | 2016-04-13 |
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| CN104805822B (en) * | 2015-04-03 | 2016-06-08 | 水利部交通运输部国家能源局南京水利科学研究院 | The pre-buried fixing device of single hole multiple spot pore pressure gauge and method for embedding thereof |
| CN105352641B (en) * | 2015-10-21 | 2018-02-09 | 上海交通大学 | The device and its installation method of section of jurisdiction soil pressure and pore water pressure can be monitored simultaneously |
| CN105572323B (en) * | 2016-01-29 | 2017-12-29 | 南京全水信息科技有限公司 | A kind of soil sensor |
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| JPS60261822A (en) * | 1984-06-11 | 1985-12-25 | Oyo Chishitsu Kk | Single hole type multi-depth underground water investigating device and method thereof |
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| CN101858075A (en) * | 2010-04-27 | 2010-10-13 | 东南大学 | Environmental static sounding probe for contaminated foundation soil |
| CN202247833U (en) * | 2011-09-10 | 2012-05-30 | 无锡市政设计研究院有限公司 | Device for measuring and monitoring underground water pressure |
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- 2014-07-22 CN CN201410348659.6A patent/CN104153340B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60261822A (en) * | 1984-06-11 | 1985-12-25 | Oyo Chishitsu Kk | Single hole type multi-depth underground water investigating device and method thereof |
| JP2003321827A (en) * | 2002-05-01 | 2003-11-14 | Takenaka Komuten Co Ltd | Method for measuring water permeable anisotropy of ground |
| CN101858075A (en) * | 2010-04-27 | 2010-10-13 | 东南大学 | Environmental static sounding probe for contaminated foundation soil |
| CN202247833U (en) * | 2011-09-10 | 2012-05-30 | 无锡市政设计研究院有限公司 | Device for measuring and monitoring underground water pressure |
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