CN204359470U - Hydraulic pressure power transmission formula borehole stressmeter instrument - Google Patents
Hydraulic pressure power transmission formula borehole stressmeter instrument Download PDFInfo
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- CN204359470U CN204359470U CN201420852114.4U CN201420852114U CN204359470U CN 204359470 U CN204359470 U CN 204359470U CN 201420852114 U CN201420852114 U CN 201420852114U CN 204359470 U CN204359470 U CN 204359470U
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- pressure
- strain gauge
- capsule
- fluid injection
- liquid
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- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a kind of hydraulic pressure power transmission formula borehole stressmeter instrument, it comprises strain gauge and secondary instrument, secondary instrument receives the signal of strain gauge, and it also comprises the flexible pressure bearing and seal capsule be arranged in hole and the fluid injection connection valve be arranged in outside hole; Manually liquid pressure pump injects the emulsion of certain pressure to the flexible pressure bearing and seal capsule in boring, when Change in surrounding rocks, emulsion pressure changes, transfer the pressure on strain gauge by high-pressure rubber pipe, realize to coal-face front and crossheading boring that around the range size of stress field of the surrounding rock and dynamic changing process thereof carry out the Real-Time Monitoring of initiatively pressure-bearing.
Description
Technical field
The utility model relates to mine safety monitoring equipment.
Background technology
At Coal Mining Field, along with the propelling of coal-face, outside workplace front and crossheading in certain limit, there is the stress field of dynamic change, this is confirmed in production practices.Theoretically, the scope of stress field and the size of stress can be obtained by mechanics means analysis.The stress field borehole stressmeter of current dynamic change detects.The structure of borehole stressmeter arranges strain gauge in the borehole, outside boring, arrange secondary instrument, and secondary instrument carries out data storage or processes further, obtaining the delta data of stress field after receiving the signal of strain gauge.
Because existing strain gauge is mostly resistance-strain type or type vibration wire, substantially point cantact is belonged in the borehole, receive only the pressure in a direction, during installation cannot guarantor to correctness, and strain gauge contacts leakiness with boring, the change of pressure just can be sensed after can only waiting boring collapse hole, the change procedure of boring rib stress from elasticity to plasticity cannot be monitored, just can work after only having surrouding rock deformation to a certain degree, passive reception country rock, cannot the STRESS VARIATION of active monitoring country rock to its pressure.So a monitoring result difinite quality reference value, the dynamic changing process of stress field and stress cannot be obtained, be difficult to for stope mine pressing prediction, roadway layout, face timbering design, provide decision-making foundation accurately without coal pillar mining etc.
Utility model content
The purpose of this utility model is the defect for prior art, a kind of coal mining hydraulic power transmission formula borehole stressmeter instrument is provided, and a kind of use method of operating of this instrument is provided, realize to coal-face front and crossheading boring that around the range size of stress field of the surrounding rock and dynamic changing process thereof carry out the Real-Time Monitoring of initiatively pressure-bearing.
Its technical scheme is as follows:
A kind of hydraulic pressure power transmission formula borehole stressmeter instrument, it comprises strain gauge and secondary instrument, and secondary instrument receives the signal of strain gauge, it is characterized in that, it also comprises the flexible pressure bearing and seal capsule be arranged in hole and the fluid injection connection valve be arranged in outside hole; Described flexible pressure bearing and seal capsule is one can bear 40MPa with the capsule of upward pressure with steel wire floor, and the diameter of capsule can load in boring, and the Front-end Design of capsule is conical head, and the rear end of capsule is provided with rapid-acting coupling; Described fluid injection connection valve is a T-valve, and one end is liquid injection port, and the other end is two liquid outlets, and liquid injection port is provided with cone valve; Flexible pressure bearing and seal capsule is connected by a liquid outlet of high-pressure rubber pipe and fluid injection connection valve, and strain gauge is arranged on another liquid outlet of fluid injection connection valve; The liquid injection port of fluid injection connection valve connects manual liquid forcing pump, manually liquid pressure pump injects the emulsion of certain pressure to the flexible pressure bearing and seal capsule in boring, is coupled after pressure bearing and seal capsule is heaved with the wall of a borehole; When Change in surrounding rocks, emulsion pressure changes, and is transferred the pressure on strain gauge by high-pressure rubber pipe.
Use method of operating of the present utility model:
One, according to the actual geographic geologic condition in colliery and the design parameter of workplace, formulate monitoring scheme, determine the bore position in return airway and drilling depth; According to bore position and drilling depth construction drill;
Two, according to drilling depth, select the high-pressure rubber pipe of corresponding length, high-pressure rubber pipe is connected in the rapid-acting coupling of flexible pressure bearing and seal capsule, then with mounting rod, flexible pressure bearing and seal capsule is pushed the bottom of boring;
Three, outside hole, arrange secondary instrument and fluid injection connection valve, by strain gauge wire connecting secondary instrument, and strain gauge is arranged on a liquid outlet of fluid injection connection valve, the high-pressure rubber pipe other end is connected on another liquid outlet of fluid injection connection valve, then manual liquid forcing pump is connected in the liquid injection port of fluid injection connection valve;
Four, in the flexible pressure bearing and seal capsule of boring, emulsion is injected with manual liquid forcing pump, fluid injection is stopped when the pressure of secondary instrument is shown to 5Mpa, flexible pressure bearing and seal capsule is fully coupled with the hole wall of boring, cone valve is tightened after equal pressure is stable, take off manual liquid forcing pump, instrument enters duty;
Five, in coal mining process, along with the propelling of coal-face, stress field occurrence dynamics change outside workplace front and crossheading, strain gauge to change signal according to pressure variable condition, after secondary instrument receives the variable signal of strain gauge, carry out data storage or process further, by communication facilities by data upload to host computer, by the dynamic change situation of host computer Real-Time Monitoring stress field.
Good effect of the present utility model is: flexible pressure bearing and seal capsule pressure-bearing is large, can not fracture failure when holing country rock extruding.Flexible pressure bearing and seal capsule has certain flexibility, fully can be coupled with the hole wall of boring, as long as country rock changes a little, emulsion in flexible pressure bearing and seal capsule will transmission of pressure, strain gauge just change signal produce, just can collect range size and the dynamic change overall process thereof of stress field of the surrounding rock.And the surrouding rock stress collected is non-directional, and with linear pressure transmission; Can be coming pressure prediction forecast, roadway layout, ahead work face design of its support, providing decision-making foundation without coal pillar mining etc. of stope.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the structural map of flexible pressure bearing and seal capsule.
Marginal data, the flexible pressure bearing and seal capsule of 1-, 2-rapid-acting coupling, 3-high-pressure rubber pipe, 4-strain gauge, 5-first liquid outlet, 6-fluid injection connection valve, 7-manual liquid forcing pump, 8-cone valve, 9-secondary instrument, 10-rubber inner layer, 11-steel wire floor, 12-rubber outer.
Embodiment
As shown in Figure 1, a kind of hydraulic pressure power transmission formula borehole stressmeter instrument, it comprises strain gauge 4 and secondary instrument 9, and secondary instrument 9 receives the signal of strain gauge 4; It also comprises the flexible pressure bearing and seal capsule 1 be arranged in boring and the fluid injection connection valve 6 be arranged in outside hole; The structure of described flexible pressure bearing and seal capsule 1 as shown in Figure 2, it is made up of the steel wire floor 11 of rubber inner layer 10, rubber outer 12 and inside, flexible pressure bearing and seal capsule 1 can bear the pressure of more than 40MP, the diameter of design can load in boring, Front-end Design is conical head, and rear end is provided with rapid-acting coupling 2; Described fluid injection connection valve 6 is T-valve, and first port is liquid injection port, and another two outlets are liquid outlet, and liquid injection port is provided with cone valve 8; Flexible pressure bearing and seal capsule 1 is connected by first liquid outlet 5 of high-pressure rubber pipe 3 with fluid injection connection valve 6, and strain gauge 4 is arranged on the second liquid outlet of fluid injection connection valve 6; The cone valve 8 of fluid injection connection valve is connected with manual liquid forcing pump 7, and manually liquid pressure pump 7 injects the emulsion of certain pressure to the pressure bearing and seal capsule 1 in boring, is coupled after flexible pressure bearing and seal capsule 1 is heaved with the wall of a borehole; When Change in surrounding rocks, emulsion pressure changes, and is transferred the pressure on strain gauge 4 by high-pressure rubber pipe 3.
Use method of operating of the present utility model is further illustrated according to Fig. 1:
One, according to the actual geographic geologic condition in colliery and the design parameter of workplace, formulate monitoring scheme, determine the bore position in return airway and drilling depth; According to bore position and drilling depth construction drill;
Two, according to drilling depth, select the high-pressure rubber pipe 3 of corresponding length, high-pressure rubber pipe 3 is connected in the rapid-acting coupling 2 of flexible pressure bearing and seal capsule 1, then with mounting rod, flexible pressure bearing and seal capsule 1 is pushed the bottom of boring.
Three, outside hole, secondary instrument 9 is arranged, by strain gauge 4 wire connecting secondary instrument 9, and be arranged on the second liquid outlet of fluid injection connection valve 6, high-pressure rubber pipe 3 is connected on the first liquid outlet 5 of fluid injection connection valve 6, manual liquid forcing pump 7 is connected on the cone valve 8 of fluid injection connection valve 6.
Four, emulsion is injected with manual liquid forcing pump 7 to flexible pressure bearing and seal capsule 1, fluid injection is stopped when the pressure of secondary instrument 9 is shown to 5Mpa, flexible pressure bearing and seal capsule 1 is fully coupled with the hole wall of boring, cone valve 8 is tightened after equal pressure is stable, take off manual liquid forcing pump 7, instrument enters normal work.
Five, in coal mining process, along with the propelling of coal-face, stress field occurrence dynamics change outside workplace front and crossheading, strain gauge 4 to change signal according to pressure variable condition, after secondary instrument 9 receives the variable signal of strain gauge 4, carry out data storage or process further, by communication facilities by data upload to host computer, by the dynamic change situation of host computer Real-Time Monitoring stress field.
Claims (1)
1. a hydraulic pressure power transmission formula borehole stressmeter instrument, it comprises strain gauge and secondary instrument, secondary instrument receives the signal of strain gauge, it is characterized in that, it also comprises the flexible pressure bearing and seal capsule be arranged in hole and the fluid injection connection valve be arranged in outside hole; Described flexible pressure bearing and seal capsule is a capsule that can bear more than 40MPa with steel wire floor, and the diameter of capsule can load in boring, and the Front-end Design of capsule is conical head, and the rear end of capsule is provided with rapid-acting coupling; Described fluid injection connection valve is a T-valve, and one end is liquid injection port, and the other end is two liquid outlets, and liquid injection port is provided with cone valve; Flexible pressure bearing and seal capsule is connected by a liquid outlet of high-pressure rubber pipe and fluid injection connection valve, and strain gauge is arranged on another liquid outlet of fluid injection connection valve; The liquid injection port of fluid injection connection valve connects manual liquid forcing pump, manually liquid pressure pump injects emulsion to the flexible pressure bearing and seal capsule in boring, is coupled after pressure bearing and seal capsule is heaved with the wall of a borehole; When Change in surrounding rocks, emulsion pressure changes, and is transferred the pressure on strain gauge by high-pressure rubber pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852114.4U CN204359470U (en) | 2014-12-29 | 2014-12-29 | Hydraulic pressure power transmission formula borehole stressmeter instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852114.4U CN204359470U (en) | 2014-12-29 | 2014-12-29 | Hydraulic pressure power transmission formula borehole stressmeter instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204359470U true CN204359470U (en) | 2015-05-27 |
Family
ID=53260934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420852114.4U Expired - Fee Related CN204359470U (en) | 2014-12-29 | 2014-12-29 | Hydraulic pressure power transmission formula borehole stressmeter instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204359470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502002A (en) * | 2014-12-29 | 2015-04-08 | 山东华硕能源科技有限公司 | Hydraulic force transfer type borehole stressmeter and operation method thereof |
| CN105486431A (en) * | 2015-12-30 | 2016-04-13 | 山东科技大学 | Recycle type borehole stress monitoring device and monitoring method |
-
2014
- 2014-12-29 CN CN201420852114.4U patent/CN204359470U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502002A (en) * | 2014-12-29 | 2015-04-08 | 山东华硕能源科技有限公司 | Hydraulic force transfer type borehole stressmeter and operation method thereof |
| CN105486431A (en) * | 2015-12-30 | 2016-04-13 | 山东科技大学 | Recycle type borehole stress monitoring device and monitoring method |
| CN105486431B (en) * | 2015-12-30 | 2017-09-29 | 山东科技大学 | A kind of recoverable drilling hole stress monitoring device and monitoring method |
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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: 20150527 Termination date: 20211229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |