CN101368480A - Boring elastic modulus instrument probe - Google Patents
Boring elastic modulus instrument probe Download PDFInfo
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- CN101368480A CN101368480A CNA2007101433077A CN200710143307A CN101368480A CN 101368480 A CN101368480 A CN 101368480A CN A2007101433077 A CNA2007101433077 A CN A2007101433077A CN 200710143307 A CN200710143307 A CN 200710143307A CN 101368480 A CN101368480 A CN 101368480A
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- top pressing
- probe
- cavity
- elastic modulus
- hydraulic cylinder
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Abstract
The invention discloses a borehole pressuremeter probe which is a column structure divided into three sections, including a front section, a middle section and a back section. The front section and the back section make up an outer tube. The middle section is provided with a cavity and a plurality of hydraulic cylinders which are perpendicular to the axis of the column structure are arranged in parallel in the cavity. Each hydraulic cylinder is provided with a piston which can move along the radial direction of the column inside, and the top of each piston is connected with a strip top pressing plate above which a load plate is arranged. A displacement sensor and a displacement sensor pressing plate are arranged on both ends of the top pressing plate. Oil inlet and outlet pipelines connected in series are arranged on corresponding positions on the upper ends and the lower ends of the hydraulic cylinders. The borehole pressuremeter probe can exert symmetric strip loads to the bored wall by pushing the rigid top pressing plates and the load plates through the pistons of the hydraulic cylinders inside the probe when adding pressure, and the top pressing plates are provided with displacement sensors for testing radial deformation of the wall of the bored hole under different pressures when exterting loads.
Description
Technical field
The invention belongs to measureing equipment, the deflection when being used for measuring the rock loading on the borehole apparatus.
Background technology
Boring elastic modulus is a kind of segmentation measurement of carrying out in the rock mass deep with below the groundwater table, determines the deformation characteristic of deep rock mass and a kind of very little to the rock mass disturbance home position testing method of elastic parameter thereof.The basic principle of this method is: by movably popping one's head in, borehole wall is applied radial pressure, measure the deflection that rock mass produces under pressure, obtain modulus of elasticity, modulus of deformation and the anisotropic parameters etc. of rock mass according to rock mass pressure and deformation relationship curve, be used for rock mass is carried out evaluation of classification and checks that with engineering geophysics building foundation grouting effect boring elastic modulus test belongs to the boring loading test, the probe that uses mostly is a columniform expanded radially probe at present.A throughput probing cumulative volume changes to determine distortion, this device structure complexity, and the sensitivity of measurement is not high, and swelling gasbag very easily damages, and consumables cost is high.
Summary of the invention
In view of this, the technical problem that mainly solves of the present invention be to provide a kind of simple in structure, make the highly sensitive boring elastic modulus instrument probe of measurement that plays the mould instrument.
For reaching above-mentioned technical problem, technical scheme of the present invention is achieved in that a kind of boring elastic modulus instrument probe, its profile is cylindrical, and before, during and after be divided into three sections, forward and backward two sections is urceolus, be provided with cavity in the stage casing, be set side by side with several and the perpendicular hydraulic cylinder of the cylindrical axis of described profile in the described cavity, be respectively arranged with the piston that can move along the cylindrical radial direction in described each hydraulic cylinder, each top land links to each other with the bar shaped top pressing board respectively, is provided with load plate above the bar shaped top pressing board; Described top pressing board two ends are provided with displacement transducer and displacement transducer pressing plate; With hydraulic cylinder top and bottom opposite position on be respectively arranged with the turnover oil-piping of connecting.
Described being positioned at also is provided with external surface on the cavity place load plate and is circular-arc cover cap.
The technique effect that the present invention reaches is as follows:
Use probe of the present invention, can promote the top pressing board and the load plate of a rigidity by the piston in the hydraulic cylinder in the when pressurization probe, the drill hole wall rock is applied the band load of a symmetry, owing on the top pressing board hole wall rock mass that displacement transducer is used for measuring boring is housed, the radial-deformation when loading under the hole wall different pressures.The present invention is simple in structure, and is highly sensitive, and it is strong to adapt to the engineering-environment ability, can satisfy rock mass mechanics parameter testing requirement, and can be used for having the heterogeneous rock mass of joint fissure.
Description of drawings
Fig. 1 is the lateral cross section cut-away view of the present invention's probe;
The specific embodiment
As shown in Figure 1, be boring elastic modulus instrument probe of the present invention cross section cut-away view, be one and be installed on the drilling hole type probe that plays cylindrical radial distortion on the mould instrument, be used for engineering site and determine elastic modulus of rock, be applicable to the rock mass that hard complete sum is more complete.Boring elastic modulus instrument mainly is made up of compression system and displacement test system, and probe of the present invention is that the deflection on the compression system is measured equipment.
Before, during and after boring elastic modulus instrument probe of the present invention is divided into three sections, forward and backward two sections is urceolus 1,8, be provided with cavity in the stage casing, be provided with in this cavity and play mould instrument main part 2, also be provided with side by side in the cavity 3 connection oil pumps and with the perpendicular hydraulic cylinder 4 of the cylindrical axis of profile, be respectively arranged with the piston that can move along the cylindrical radial direction in each hydraulic cylinder.The top land of hydraulic cylinder 4 the be sticked top pressing board 6 and the load plate 5 of bar shaped, the two ends of top pressing board 6 are provided with displacement transducer and displacement transducer pressing plate 3.Make the piston of 3 hydraulic cylinders 4 in the probe promote the top pressing board 6 and the load plate 5 of a rigidity by pressurization during test, the drill hole wall rock is applied the band load of a symmetry, owing on the top pressing board 6 the hole wall rock mass that displacement transducer is used for measuring boring is housed, the radial-deformation when loading under the hole wall different pressures.With hydraulic cylinder 4 top and bottom opposite positions on be respectively arranged with the turnover oil-piping 9,11 of connecting.Be positioned at and be provided with external surface on the cavity place load plate and be circular-arc cover cap, play a protective role.Boring elastic modulus instrument probe of the present invention is simple in structure, and is highly sensitive, and can be used for having the heterogeneous rock mass of joint fissure.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (2)
1. boring elastic modulus instrument probe, its profile is cylindrical, and before, during and after be divided into three sections, forward and backward two sections is urceolus, is provided with cavity in the stage casing, it is characterized in that, be set side by side with several and the perpendicular hydraulic cylinder of the cylindrical axis of described profile in the described cavity, be respectively arranged with the piston that can move along the cylindrical radial direction in described each hydraulic cylinder, each top land links to each other with the bar shaped top pressing board respectively, is provided with load plate above the bar shaped top pressing board; Described top pressing board two ends are provided with displacement transducer and displacement transducer pressing plate; With hydraulic cylinder top and bottom opposite position on be respectively arranged with the turnover oil-piping of connecting.
2. boring elastic modulus instrument probe as claimed in claim 1 is characterized in that, described being positioned at also is provided with external surface on the cavity place load plate and is circular-arc cover cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101433077A CN101368480A (en) | 2007-08-17 | 2007-08-17 | Boring elastic modulus instrument probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101433077A CN101368480A (en) | 2007-08-17 | 2007-08-17 | Boring elastic modulus instrument probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101368480A true CN101368480A (en) | 2009-02-18 |
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ID=40412466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101433077A Pending CN101368480A (en) | 2007-08-17 | 2007-08-17 | Boring elastic modulus instrument probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101368480A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115829A (en) * | 2012-11-19 | 2013-05-22 | 中国水利水电科学研究院 | Rock mass drilling and shearing elastic modulus instrument |
| CN117007434A (en) * | 2023-10-07 | 2023-11-07 | 四川省华地建设工程有限责任公司 | Pre-drilling type deep rock mechanical deformation tester and parameter calculation method |
-
2007
- 2007-08-17 CN CNA2007101433077A patent/CN101368480A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115829A (en) * | 2012-11-19 | 2013-05-22 | 中国水利水电科学研究院 | Rock mass drilling and shearing elastic modulus instrument |
| CN117007434A (en) * | 2023-10-07 | 2023-11-07 | 四川省华地建设工程有限责任公司 | Pre-drilling type deep rock mechanical deformation tester and parameter calculation method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090218 |