CN202611613U - Ground stress test drill rod shock absorption device - Google Patents
Ground stress test drill rod shock absorption device Download PDFInfo
- Publication number
- CN202611613U CN202611613U CN 201220267847 CN201220267847U CN202611613U CN 202611613 U CN202611613 U CN 202611613U CN 201220267847 CN201220267847 CN 201220267847 CN 201220267847 U CN201220267847 U CN 201220267847U CN 202611613 U CN202611613 U CN 202611613U
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- drill
- steel
- structural component
- stress test
- cylindrical structural
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- Expired - Fee Related
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Abstract
The utility model discloses a ground stress test drill rod shock absorption device which comprises a steel cylindrical structural component. The linear mass of the cylindrical structural component is larger than the linear mass of a drill rod. A pair of sliding bearings is installed on the steel cylindrical structural component, steel sleeves are connected to outsides of the two sliding bearings, and the outer diameter of each steel sleeve is matched with the diameter of a drill hole. End faces of two ends of the steel cylindrical structural component are provided with cone screw holes, and the steel cylindrical structural component is connected with cone screw connecting pieces used for connecting the drill rod through the cone screw holes. According to the ground stress test drill rod shock absorption device, generation of resonance phenomena in the process of drilling is avoided, the steel sleeves effectively restrain eccentric swinging of a drill, straight drilling of the drill is maintained, the steel sleeves can effectively bind eccentric swing of a drill bit, accordingly the drill bit keeps straightly drilling, meanwhile a drill core in a coring tube is prevented from being broken because of strenuous vibration, completeness of drill hole surrounding rocks and the drill core is protected, and a ground stress test is guaranteed to be carried out smoothly.
Description
Technical field
The utility model relates to the geostatic stress measuring technology of underground construction rock mass.
Technical background
Geostatic stress is to be present in the natural stress that does not receive the engineering disturbance in the stratum, and it is the basic parameter of mining, water conservancy and hydropower, civil construction, railway, highway, military affairs and other various underground or open-air rock excavation engineering project deformation failure analyses and supporting design.
The drilling hole stress commonly used of geostatic stress test is at present separated division, and this method must be to the hole of drilling, stratum, below two problems restricted the application and the development of this method.The first, because the strenuous vibration of drilling rod often causes trepanning rock pillar (core) fragmentation in boring procedure, inclusion gets loose and causes strain testing to interrupt; The second, the deflection of boring often causes the inefficacy tested.
Summary of the invention
Separate the problems referred to above that division often occurs for solving drilling hole stress, the utility model provides a kind of geostatic stress test drilling rod damping device.
A kind of geostatic stress test drilling rod damping device; It is characterized in that it comprises the steel cylinder structural member of a damping, a pair of sliding bearing is installed on the steel cylinder structural member; Two sliding bearings outside is connected with steel bushing, and the external diameter of steel bushing and bore diameter are complementary; The end face at steel cylinder structural member two ends is processed with the conessi hole, connects the conessi connector that is used for jointed rod through the conessi hole.
During use, select corresponding conessi connector, the drilling rod damping device is connected between the two joint drilling rods according to the drilling rod model.
The generation of covibration in drilling process when this damping device has been avoided boring; Steel bushing retrains the eccentric swing of drill bit effectively; Keep that drill bit is straight to creep into; Avoided the core in the corer cracked because of strenuous vibration simultaneously, protected the integrality of boring country rock and core, the test of assurance geostatic stress is carried out smoothly.Again because, steel bushing is retraining drilling rod and is leaving hole wall, makes drilling rod and sliding friction between the country rock of holing become rolling friction, has improved the machine drilling efficiency.
Description of drawings
Fig. 1 is the front view sectional drawing of the utility model;
Fig. 2 is the user mode figure of the utility model.
Marginal data, 1-steel cylinder structural member, 2-sliding bearing, 3-steel bushing, 4-conessi hole, 5-conessi connector, 6-drilling rod damping device, 7-drilling rod.
The specific embodiment
Like Fig. 1, shown in 2; The drilling rod damping device of the utility model comprises a steel cylinder structural member 1, and the linear mass of steel cylinder structural member 1 is greater than the linear mass of drilling rod 7, thus the cushioning effect of playing; A pair of sliding bearing 2 is installed on the steel cylinder structural member 1; Two sliding bearing 2 outsides are connected with steel bushing 3, and the external diameter of steel bushing 3 and bore diameter be complementary, thereby eliminate covibration; Make drilling rod 7 and the sliding friction of boring between the country rock become rolling friction, thereby the eccentric swing of constraint drill bit keeps that drill bit is straight to creep into, guarantee that the geostatic stress test carries out smoothly; End face at steel cylinder structural member 1 two ends is processed with conessi hole 4, connects the conessi connector 5 that is used for jointed rod through conessi hole 4.
During use, select corresponding conessi connector 5, as shown in Figure 2 the utility model drilling rod damping device 6 is connected between the two joint drilling rods 7, along with the increase of drilling depth, by between the rock-mass quality decision drilling rod what damping devices 6 being set according to drilling rod 7 models.
Claims (1)
1. a geostatic stress is tested the drilling rod damping device; It is characterized in that; It comprises a steel cylinder structural member, requires the linear mass of the linear mass of cylindrical structure spare greater than drilling rod, and a pair of sliding bearing is installed on the steel cylinder structural member; Two sliding bearings outside is connected with steel bushing, and the external diameter of steel bushing and bore diameter are complementary; The end face at steel cylinder structural member two ends is processed with the conessi hole, connects the conessi connector that is used for jointed rod through the conessi hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267847 CN202611613U (en) | 2012-05-31 | 2012-05-31 | Ground stress test drill rod shock absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220267847 CN202611613U (en) | 2012-05-31 | 2012-05-31 | Ground stress test drill rod shock absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611613U true CN202611613U (en) | 2012-12-19 |
Family
ID=47345322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220267847 Expired - Fee Related CN202611613U (en) | 2012-05-31 | 2012-05-31 | Ground stress test drill rod shock absorption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611613U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184590A (en) * | 2018-11-19 | 2019-01-11 | 河南理工大学 | A kind of deep well drilling method and device |
-
2012
- 2012-05-31 CN CN 201220267847 patent/CN202611613U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184590A (en) * | 2018-11-19 | 2019-01-11 | 河南理工大学 | A kind of deep well drilling method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150531 |
|
| EXPY | Termination of patent right or utility model |