CN107083980B - Surrounding rock disaster early warning method and anchor early warning device for anchor bolt supporting roadway - Google Patents
Surrounding rock disaster early warning method and anchor early warning device for anchor bolt supporting roadway Download PDFInfo
- Publication number
- CN107083980B CN107083980B CN201710452402.9A CN201710452402A CN107083980B CN 107083980 B CN107083980 B CN 107083980B CN 201710452402 A CN201710452402 A CN 201710452402A CN 107083980 B CN107083980 B CN 107083980B
- Authority
- CN
- China
- Prior art keywords
- surrounding rock
- early warning
- tray
- equalizing pipe
- anchor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011435 rock Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000004873 anchoring Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 239000007921 spray Substances 0.000 abstract description 2
- 230000001965 increasing effect Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0086—Bearing plates
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/02—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection having means for indicating tension
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The invention discloses a surrounding rock disaster early warning method and an anchoring early warning device for an anchor bolt supporting roadway, wherein the anchoring early warning device comprises an anchor bolt, a nut, a basic tray, a multi-layer tray and an annular equalizing pipe; the tail end of the anchor rod is sequentially provided with a nut, a basic tray, an annular equalizing pipe and a multi-layer tray from outside to inside; the annular pressure equalizing pipe is internally provided with reflective liquid, and the annular pressure equalizing pipe is provided with a hydraulic functional valve. The invention can improve the bearing capacity of the basic tray of the anchor rod, and realize early warning by adopting reflective liquid to spray out in the abnormal bearing state of surrounding rock, and has the advantages of simple structure, simple and convenient manufacture, simple and easy operation and suitability for underground wet dangerous environments.
Description
Technical Field
The invention belongs to the field of anchor bolt support monitoring of mine and underground engineering roadways, and particularly relates to a surrounding rock disaster early warning method and an anchor bolt early warning device of an anchor bolt support roadway.
Background
Along with the gradual exhaustion of shallow resources, mines with mining depths exceeding kilometers at home and abroad are common, rock mass engineering is developing to underground deep parts, and in order to ensure the stability of various roadways of the mines and the underground engineering, anchor bolt supports become an important support form for maintaining the stability of surrounding rocks of the roadways. The surrounding rock in the deep part can be subjected to the action of high ground stress, so that the anchor rod supporting system is damaged or fails, surrounding rock disasters such as roof fall, side panels, rock burst and the like are further induced, and the surrounding rock disasters under the anchor rod supporting have hysteresis, concealment and burst. In order to control the occurrence of surrounding rock disasters, the anchoring effect of the anchor rod is usually required to be improved, and the strength and the deformability of the anchor rod and the basic tray are mainly improved; the early warning method for realizing the surrounding rock disasters mainly comprises the steps of directly observing the stress of the anchor rod system, the displacement of the anchored surrounding rock and the like. At present, means for improving the anchoring effect of an anchor rod pay more attention to the performance of the anchor rod body, but according to the interaction principle of the anchor rod and surrounding rock, good contact between an anchor rod tray and the surrounding rock is a key for the anchor rod to play an anchoring role, if the contact area between the anchor rod tray and the surrounding rock is insufficient, the anchor rod is sunken or suspended, and the supporting performance of the anchor rod cannot be fully played due to the fact that the surface is covered. Meanwhile, the surrounding rock disaster early warning device is mainly an improved anchor rod component, a strain gauge and a stress gauge are installed or surrounding rock deformation displacement monitoring electronic elements are arranged, although the measuring precision of the device is high, the limitations of poor contact stability of a sensing element, high production, manufacturing and maintenance cost and the like exist, the adaptability of the electronic elements to humid and dangerous environments is poor, the requirement on the installed environments is high, and the use of the electronic element early warning device is limited.
Disclosure of Invention
In order to solve the technical problems, the surrounding rock disaster anchoring and early warning device and method for the anchor supporting tunnel are simple in structure, convenient to operate and capable of effectively enhancing the bearing capacity of the anchor supporting system and monitoring and early warning surrounding rock disasters of the anchor supporting tunnel.
The technical scheme adopted by the invention is as follows: the surrounding rock disaster anchoring and early warning device for the anchor bolt supporting roadway comprises an anchor bolt, a nut, a basic tray, a multi-layer tray and an annular equalizing pipe; the tail end of the anchor rod is sequentially provided with a nut, a basic tray, an annular equalizing pipe and a multi-layer tray from outside to inside; the annular pressure equalizing pipe is internally provided with reflective liquid, and the annular pressure equalizing pipe is provided with a hydraulic functional valve.
In the surrounding rock disaster anchoring early warning device of the anchor bolt supporting roadway, the bearing area of the multi-layer tray is larger than that of the basic tray.
The surrounding rock disaster early warning method for the anchor bolt supporting roadway by using the surrounding rock disaster anchoring early warning device for the anchor bolt supporting roadway comprises the following steps:
(1) According to the design scheme of the tunnel anchor bolt support, the anchor bolt support position is determined, anchor bolts are driven into the anchor bolts, the multi-layer tray, the annular pressure equalizing pipe and the basic tray are sleeved at the tail ends of the anchor bolts in sequence, and then the basic tray, the annular pressure equalizing pipe and the multi-layer tray are pressed and attached on the surrounding rock wall through nuts;
(2) And filling reflective liquid into the annular pressure equalizing pipe, and sealing the reflective liquid in the annular pressure equalizing pipe by using a hydraulic functional valve matched with the pressure-bearing early warning value.
Compared with the prior art, the invention has the beneficial effects that:
according to the interaction characteristics of the anchor bolt support and the surrounding rock of the roadway, the basic tray can become an important bearing member in the anchor bolt support system, plays a key role in the compressive deformation of the surrounding rock of the roadway, and a multi-layer tray with larger size is additionally arranged on the basis of the basic tray, so that the contact area of the tray and the surrounding rock can be increased, and the anchoring control effect on the surrounding rock and the anchor supporting force of the anchor bolt are improved; the annular pressure equalizing pipe filled with reflective liquid and provided with the hydraulic function valve is arranged between the basic tray and the multi-layer tray, the annular pressure equalizing pipe can directly bear the extrusion force born by the tray, and the reasonable bearing early warning value of the hydraulic function valve is structurally designed according to the bearing limit value of the anchoring of the anchor rod; when the surrounding rock deformation is damaged due to abnormal increase of the ground stress, the extrusion force borne by the annular pressure equalizing pipe is correspondingly increased, the pressure bearing increase of the annular pressure equalizing pipe reaches a designed pressure bearing early warning value, the hydraulic function valve is opened, the reflective liquid is sprayed on the surrounding rock wall surface around the tray, and the surrounding rock wall surface sprayed with the reflective liquid can be lightened in the lamplight environment of the underground roadway, so that disaster early warning is realized.
The invention fully considers the interaction between the anchor rod and the roadway surrounding rock, improves the bearing capacity of the anchor rod basic tray by adding the multi-layer tray, realizes early warning on the abnormal bearing state of the surrounding rock by adopting the reflection liquid jet, and has the advantages of simple structure, simple and convenient manufacture, simple and easy operation and suitability for underground wet dangerous environments.
Drawings
Fig. 1 is a schematic structural diagram of a surrounding rock disaster anchoring and early warning device for an anchor bolt supporting roadway.
FIG. 2 is a schematic view of the annular pressure equalizing tube of the present invention.
FIG. 3 is a schematic diagram of the device of the present invention in an unworked state.
FIG. 4 is a schematic diagram of the early warning state of the device of the present invention.
In the figure: 1-multi-layer tray, 2-annular pressure equalizing pipe, 3-basic tray, 4-nut, 5-anchor rod, 6-surrounding rock wall, 7-hydraulic functional valve and 8-reflective liquid.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in figure 1, the surrounding rock disaster anchoring early warning device for the anchor bolt supporting roadway comprises an anchor bolt 5, a nut 4, a basic tray 3, a multi-layer tray 1 and an annular equalizing pipe 2; the tail end of the anchor rod 5 is provided with a nut 4, a basic pallet 3, an annular equalizing pipe 2 and a multi-layer pallet 1 from outside to inside, and the nut 4 presses the multi-layer pallet 1 on a surrounding rock wall 6. The annular pressure equalizing pipe 2 is internally provided with reflective liquid 8, and the annular pressure equalizing pipe 2 is provided with a hydraulic functional valve 7. The hydraulic function valve 7 can be designed in a superposition control manner, so that the opening response to various bearing stress values is realized.
The surrounding rock disaster early warning method for the anchor bolt supporting roadway by using the surrounding rock disaster anchoring early warning device for the anchor bolt supporting roadway comprises the following steps:
(1) According to the design scheme of roadway anchor bolt support, determining the anchor bolt support position, driving an anchor bolt 5, sleeving a multi-layer tray 1, an annular pressure equalizing pipe 2 and a basic tray 3 in sequence at the tail end of the anchor bolt 5, and then pressing and attaching the basic tray 3, the annular pressure equalizing pipe 2 and the multi-layer tray 1 on a surrounding rock wall 6 through nuts 4;
(2) The annular pressure equalizing pipe 2 is filled with reflective liquid 8, and a hydraulic functional valve 7 matched with the pressure bearing early warning value is selected to seal the reflective liquid 8 in the annular pressure equalizing pipe 2. According to the interaction characteristics of the anchor bolt support and the surrounding rock, the basic tray 3 and the multi-layer tray 1 can bear high extrusion force before the disaster of the surrounding rock of the roadway occurs, the annular pressure equalizing pipe 2 is compressed, when the stress of the annular pressure equalizing pipe 2 reaches a designed pressure-bearing early warning value, the hydraulic function valve 7 is opened, and the reflective liquid 8 in the annular pressure equalizing pipe 2 is sprayed on the surrounding rock wall surface around the tray, so that disaster early warning is realized.
The size area of the multi-layer tray 1 is larger than that of the basic tray 3, the multi-layer tray can be made of metal or nonmetal materials, in a brittle surrounding rock roadway, the peeling damage of the surface of the brittle surrounding rock is better adapted, the problem that the anchor rod body 5 fails due to the peeling of the surface of the surrounding rock caused by insufficient contact area between the basic tray 3 and the surrounding rock wall 6 is avoided, and therefore the bearing capacity of the anchor rod body 5 is improved.
Under normal conditions, the surrounding rock disaster anchoring early warning device of the anchor rod supporting roadway plays a role in increasing the bearing capacity of the anchor rod, and surrounding rocks around the multi-layer tray 1 are not bright, as shown in fig. 3. When the ground stress is abnormally increased, surrounding rock deformation leads to stretching of the anchor rod body 5, so that the extrusion force born by the annular pressure equalizing pipe 2 between the multi-layer pallet 1 and the basic pallet 3 is also increased, when the designed pressure bearing early warning value is reached, the hydraulic function valve 7 on the annular pressure equalizing pipe 2 is opened, and the reflective liquid 8 in the annular pressure equalizing pipe 2 is sprayed on the surrounding rock wall surface 6 around the pallet, as shown in fig. 4. In the dark environment in the pit, through the illumination of miner's lamp, the surrounding rock wall 6 that sprays the reflection of light liquid 8 will have the light to produce, can clearly distinguish the tunnel surrounding rock stress anomaly area, reach the mesh of surrounding rock disaster early warning, and then make the reply preparation of hidden surrounding rock disaster in advance, have practical meaning to the safe and efficient production of mine.
The anchor bolt supporting roadway surrounding rock disaster warning method and the anchor bolt supporting roadway surrounding rock disaster warning device can effectively improve the bearing capacity of the anchor bolt tray, and warning is realized by adopting reflective liquid spraying in the abnormal bearing state of the surrounding rock, so that the anchor bolt supporting roadway surrounding rock disaster warning method and the anchor bolt supporting roadway surrounding rock disaster warning device are simple and easy to operate, and are more suitable for underground wet dangerous environments.
Claims (3)
1. Surrounding rock disaster anchoring early warning device for anchor bolt supporting roadway is characterized in that: comprises an anchor rod, a nut, a basic tray, a multi-layer tray and an annular equalizing pipe; the tail end of the anchor rod is sequentially provided with a nut, a basic tray, an annular equalizing pipe and a multi-layer tray from outside to inside; the annular pressure equalizing pipe is internally provided with reflective liquid, and the annular pressure equalizing pipe is provided with a hydraulic functional valve.
2. The surrounding rock disaster anchoring and early warning device for the anchor bolt supporting roadway is characterized in that: the bearing area of the multi-layer tray is larger than that of the basic tray.
3. A surrounding rock disaster warning method for an anchor bolt support tunnel using the surrounding rock disaster anchoring warning device for an anchor bolt support tunnel according to claim 1 or 2, comprising the steps of:
(1) According to the design scheme of the tunnel anchor bolt support, the anchor bolt support position is determined, anchor bolts are driven into the anchor bolts, the multi-layer tray, the annular pressure equalizing pipe and the basic tray are sleeved at the tail ends of the anchor bolts in sequence, and then the basic tray, the annular pressure equalizing pipe and the multi-layer tray are pressed and attached on the surrounding rock wall through nuts;
(2) And filling reflective liquid into the annular pressure equalizing pipe, and sealing the reflective liquid in the annular pressure equalizing pipe by using a hydraulic functional valve matched with the pressure-bearing early warning value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452402.9A CN107083980B (en) | 2017-06-15 | 2017-06-15 | Surrounding rock disaster early warning method and anchor early warning device for anchor bolt supporting roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452402.9A CN107083980B (en) | 2017-06-15 | 2017-06-15 | Surrounding rock disaster early warning method and anchor early warning device for anchor bolt supporting roadway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107083980A CN107083980A (en) | 2017-08-22 |
| CN107083980B true CN107083980B (en) | 2023-06-30 |
Family
ID=59605618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710452402.9A Active CN107083980B (en) | 2017-06-15 | 2017-06-15 | Surrounding rock disaster early warning method and anchor early warning device for anchor bolt supporting roadway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107083980B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412526B (en) * | 2018-05-14 | 2023-12-15 | 重庆大学 | Self-adaptive hierarchical early warning anchor rod |
| CN109458204A (en) * | 2018-09-21 | 2019-03-12 | 北方工业大学 | Anchor rod cable stress measuring device capable of giving out light and giving out early warning |
| CN109931086B (en) * | 2019-04-27 | 2024-09-06 | 西畴县小锡板锑业有限公司 | Energy storage anti-impact anchor rod tray box |
| CN110715760B (en) * | 2019-10-30 | 2021-09-14 | 中铁隧道局集团有限公司 | Full-length bonding inclined anchor rod axial force monitoring device and experimental method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950552A (en) * | 1961-08-22 | 1964-02-26 | William George Burton Mcclean | Improvements in or relating to visual warning devices for indicating loss of tensionin bolts |
| US3137268A (en) * | 1962-05-23 | 1964-06-16 | Clive H Bramson | Warning device |
| RU83517U1 (en) * | 2009-02-12 | 2009-06-10 | Алексей Генрихович Малинин | SOIL ANCHOR |
| RU99537U1 (en) * | 2009-07-28 | 2010-11-20 | Общество с ограниченной ответственностью "Монтажник Распадской" | Mining Anchorages |
| CN102536283A (en) * | 2012-02-24 | 2012-07-04 | 安徽理工大学 | Retractable constant force yielding anchor bolt for dynamical pressure soft rock lane |
| CN102808634A (en) * | 2011-05-30 | 2012-12-05 | 安徽理工大学 | Hydraulic coupling anchor bolt |
| CN103422890A (en) * | 2013-07-26 | 2013-12-04 | 山东大学 | Novel anchor rod pulling resistance alarm and using method thereof |
| CN203847139U (en) * | 2014-05-28 | 2014-09-24 | 湖南科技大学 | Force measurement and early warning device suitable for pre-stressed anchor rod |
| CN204002882U (en) * | 2014-06-13 | 2014-12-10 | 山东科技大学 | A kind of Multifunctional anchor rod |
| CN205370617U (en) * | 2016-02-01 | 2016-07-06 | 山东科技大学 | Warning stock is pressed to novel letting |
| CN205977278U (en) * | 2016-09-05 | 2017-02-22 | 湖南科技大学 | Judge device of tunnel stability |
| CN206129322U (en) * | 2016-11-07 | 2017-04-26 | 武汉科技大学 | Stock early warning device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482023A (en) * | 2008-12-30 | 2009-07-15 | 卢泉生 | Novel tunnel anchor cable/rod support method |
| CN101858225B (en) * | 2010-06-10 | 2011-10-12 | 北京中矿深远能源环境科学研究院 | Constant resistance and large deformation anchor rod |
| CN104329105A (en) * | 2014-09-24 | 2015-02-04 | 淮南市金德实业有限公司 | Color light storage type anchor rod plastic tray |
| CN204902820U (en) * | 2015-04-29 | 2015-12-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Tunnel convergence deformation monitoring device |
| CN105178313B (en) * | 2015-05-07 | 2017-04-05 | 重庆交通大学 | Allow pressure type anchor pole assembly |
| CN104846822B (en) * | 2015-05-07 | 2016-08-17 | 重庆交通大学 | Surrender anchor cable |
| CN104831724B (en) * | 2015-05-07 | 2016-06-29 | 重庆交通大学 | Large deformation anchor |
-
2017
- 2017-06-15 CN CN201710452402.9A patent/CN107083980B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB950552A (en) * | 1961-08-22 | 1964-02-26 | William George Burton Mcclean | Improvements in or relating to visual warning devices for indicating loss of tensionin bolts |
| US3137268A (en) * | 1962-05-23 | 1964-06-16 | Clive H Bramson | Warning device |
| RU83517U1 (en) * | 2009-02-12 | 2009-06-10 | Алексей Генрихович Малинин | SOIL ANCHOR |
| RU99537U1 (en) * | 2009-07-28 | 2010-11-20 | Общество с ограниченной ответственностью "Монтажник Распадской" | Mining Anchorages |
| CN102808634A (en) * | 2011-05-30 | 2012-12-05 | 安徽理工大学 | Hydraulic coupling anchor bolt |
| CN102536283A (en) * | 2012-02-24 | 2012-07-04 | 安徽理工大学 | Retractable constant force yielding anchor bolt for dynamical pressure soft rock lane |
| CN103422890A (en) * | 2013-07-26 | 2013-12-04 | 山东大学 | Novel anchor rod pulling resistance alarm and using method thereof |
| CN203847139U (en) * | 2014-05-28 | 2014-09-24 | 湖南科技大学 | Force measurement and early warning device suitable for pre-stressed anchor rod |
| CN204002882U (en) * | 2014-06-13 | 2014-12-10 | 山东科技大学 | A kind of Multifunctional anchor rod |
| CN205370617U (en) * | 2016-02-01 | 2016-07-06 | 山东科技大学 | Warning stock is pressed to novel letting |
| CN205977278U (en) * | 2016-09-05 | 2017-02-22 | 湖南科技大学 | Judge device of tunnel stability |
| CN206129322U (en) * | 2016-11-07 | 2017-04-26 | 武汉科技大学 | Stock early warning device |
Non-Patent Citations (1)
| Title |
|---|
| 锚杆紧固力状态指示器研究及应用;王建文 等;煤炭技术;第第35卷卷(第第05期期);第263-264页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107083980A (en) | 2017-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107083980B (en) | Surrounding rock disaster early warning method and anchor early warning device for anchor bolt supporting roadway | |
| CN1325753C (en) | Apparatus for work under pressure for oil-water well | |
| CN102877870A (en) | Static and dynamic combined intelligent pre-warning anchor rod | |
| CN109723461B (en) | Coal mine tunnel supporting device | |
| CN109991656B (en) | Micro-seismic sensor hole installation recovery unit based on hot melt adhesive | |
| CN204572068U (en) | A kind of anchor pole rope supporting power monitoring warning device | |
| CN201180547Y (en) | Anti-impact stack type support | |
| CN101545980A (en) | Well logging detector device | |
| CN203175532U (en) | Movable type underground corrosion monitoring device for acid gas well | |
| CN202832596U (en) | Dynamic-static-combination intelligent early warning anchor rod | |
| CN102829320B (en) | Intelligent sensing large compressed natural gas bomb type antiexplosion pressure-relief underground gas storage well | |
| CN101915360B (en) | High-pressure gas long pipe semitrailer back-end integration bus bar | |
| CN116402336A (en) | Drilling construction jet orifice risk level judging method | |
| CN206129322U (en) | Stock early warning device | |
| CN106351696B (en) | A kind of back deforms prior-warning device | |
| CN201166710Y (en) | Well-logging radiodetector apparatus | |
| CN210948795U (en) | Recyclable outburst prevention real-time monitoring device integrated with multiple sensors | |
| CN104747217A (en) | Mine surrounding rock disaster rock bolt plate pressure real-time monitoring method | |
| CN203585619U (en) | One-way sleeve type telescopic device | |
| CN206693910U (en) | Down-the-hole air hammer with temperature, pressure detecting function | |
| CN104863636B (en) | New Mine deep hole monitoring sensor combines installation aiding device | |
| CN104295284A (en) | Pressure-controlled damping hydraulic pushing device | |
| CN220151339U (en) | Drilling omnidirectional stress measuring device and system | |
| CN109506075A (en) | Municipal pipeline breakage induce roadbed cavity whether there is or not detection device | |
| CN204609869U (en) | Geological drilling well temperature inserting tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |