CN102565859B - Overburden water flowing fractured zone observation system and detection drilling method thereof - Google Patents
Overburden water flowing fractured zone observation system and detection drilling method thereof Download PDFInfo
- Publication number
- CN102565859B CN102565859B CN 201110457012 CN201110457012A CN102565859B CN 102565859 B CN102565859 B CN 102565859B CN 201110457012 CN201110457012 CN 201110457012 CN 201110457012 A CN201110457012 A CN 201110457012A CN 102565859 B CN102565859 B CN 102565859B
- Authority
- CN
- China
- Prior art keywords
- water
- capsule
- shutoff
- connector
- drain valve
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
一种覆岩导水裂隙带监测系统，包括钻机、探测钻进装置和注水控制部分，探测钻进装置包括钻头、钻杆和连接柄，其可以通过所述连接柄连接所述钻机；探测钻进装置还包括封堵胶囊、连接器和进水管，其中进水管可以连接注水控制部分的软管接口。本发明中的覆岩导水裂隙带监测系统中的探测钻进装置直接安装在钻机上，使用钻机将探测装置送到目标位置，省时省力，使用钻机自身的控制系统控制探测钻进装置的钻进量，可控性好，数值精确，避免人工放置探测装置容易产生的位置误差；两路进水，跑冒量少，漏失量记录精确。
A monitoring system for overlying rock water guiding fissures, including a drilling rig, a detection drilling device and a water injection control part. The detection drilling device includes a drill bit, a drill pipe and a connecting handle, which can be connected to the drilling machine through the connecting handle; the detection drilling device The inlet device also includes a blocking capsule, a connector and a water inlet pipe, wherein the water inlet pipe can be connected to the hose interface of the water injection control part. The detection drilling device in the overlying rock water guiding fissure zone monitoring system in the present invention is directly installed on the drilling rig, and the detection device is sent to the target position by using the drilling rig, which saves time and effort, and the control system of the drilling rig itself is used to control the detection and drilling device. Drilling rate, good controllability, accurate value, avoiding position error easily caused by manual placement of detection devices; two-way water inlet, less run-off, and accurate record of leakage.
Description
Technical field
The present invention relates to equipment and using method thereof that a kind of colliery is used for surveying overlying strata water flowing fractured zone development height, relate in particular to a kind of overlying strata height of water flowing fractured zone automatic monitoring system and survey drilling method.
Background technology
In the colliery, especially fissure zone is grown in the ripe coal mine roof plate, usually need to use the leak hunting method of vector of water filling to detect the size in top board crack, namely hole to roof by specialized equipment, water filling in a certain section of boring, water permeates in top board by the crack, when water filling reaches capacity, according to actual water injection rate, just wastage, judge the size in crack in the top board, thereby draw the development degree in crack.
In the present both-end shutoff overlying strata water flowing fractured zone detecting devices, as CN101892841A, it surveys head rod is hollow-core construction, water inlet pipe all is arranged on the inside of surveying head rod, the detecting head poor rigidity, can't be arranged on the rig and use, when work, need to use rig to get out exploration hole earlier, in the hole, be lowered to detecting head by hand again.Therefore, its concrete position of section of surveying is mainly by manual measurement and record, at subsurface environment than under the condition of severe, be easy to generate misdescription or incorrect posting, and have when slightly subsiding when the exploration hole inwall, possibly can't insert detecting head by manual, at this moment just need redrilling, not only waste time and energy, also need to seek again detecting location, influenced the detection operations of overlying strata water flowing fractured zones greatly.
Summary of the invention
For addressing the above problem, the present invention proposes a kind of overlying strata water flowing fractured zone monitoring system, and comprise rig, survey drilling apparatus and water filling control section,
Described detection drilling apparatus comprises drill bit, drilling rod and connection handle, and it can connect described rig by described connection handle;
Described drill bit connects described drilling rod by first connector, shutoff capsule before being equipped with on described first connector;
Described drilling rod connects described connection handle by second connector, is equipped with shutoff capsule in back on described second connector;
Shutoff capsule and described back shutoff capsule are hollow-core construction before described, can pass through dilation by water injection, the diameter of the described preceding shutoff capsule before expanding is less than the maximum gauge of described first connector, and the diameter of the described preceding shutoff capsule after the expansion is greater than the maximum gauge of described first connector; The diameter of the described back shutoff capsule before expanding is less than the maximum gauge of described second connector, and the diameter of the described back shutoff capsule after the expansion is greater than the maximum gauge of described second connector;
Described detection drilling apparatus also comprises first water inlet pipe and second water inlet pipe, described first water inlet pipe axially extends to described first connector from described second connector along described drilling rod, and its have at least a part between described first connector and the described drilling rod, have a part at least between described second connector and described drilling rod, described first water inlet pipe respectively has at least one water delivering orifice in the hollow-core construction inside of shutoff capsule and the described capsule of shutoff afterwards described before; Described second water inlet pipe has a part at least described before between shutoff capsule and the described drilling rod, and described second water inlet pipe has at least one water delivering orifice between shutoff capsule and the described capsule of shutoff afterwards before described;
Described water filling control section comprises the capsule hose connection, the shutoff hose connection, the capsule water drain valve, shutoff water drain valve and water source interface, described capsule hose connection connects described capsule water drain valve, described shutoff hose connection connects the shutoff water drain valve, described capsule water drain valve and the shutoff water drain valve described water source interface that is connected in parallel, described capsule water drain valve is provided with pressure transducer, described shutoff water drain valve is provided with pressure transducer and flow sensor, the water inlet of described first water inlet pipe can fixedly connected capsule hose connection, and the water inlet of described second water inlet pipe can fixedly connected shutoff hose connection.
It uses the detection drilling method may further comprise the steps:
1. determine to carry out top board position and the drilling depth of fissure zone monitoring;
2. will survey drilling apparatus by connection handle and be installed on the rig, start rig, creep into from determined top board position;
3. the amount of creeping into of drilling apparatus is surveyed in the control system of rig monitoring, when the amount of creeping into reaches determined drilling depth, stops to creep into;
4. the water inlet with first water inlet pipe is connected on the capsule hose connection of water filling control section, opens the capsule water drain valve, gives preceding shutoff capsule and the water filling of back shutoff capsule, capsule is expanded, and keep hydraulic pressure to make capsule keep swelling state;
5. the water inlet with second water inlet pipe is connected on the shutoff hose connection of water filling control section, open the shutoff water drain valve, water filling in the boring between the two capsules, by the water injection rate of the record of the flow sensor on shutoff water drain valve accumulation, monitor water filling hydraulic pressure at any time by the pressure transducer on the shutoff water drain valve;
6. when the when 5. the water filling hydraulic pressure of monitoring rises to 3-5 times of beginning water filling hydraulic pressure in the step, close the shutoff water drain valve, stop water filling, with the water injection rate of the accumulation of record as wastage;
7. close the capsule water drain valve, the water in the capsule is flowed out, will survey drilling apparatus then and from boring, withdraw from.
The invention has the advantages that:
1, survey drilling apparatus and be directly installed on the rig, use rig that sniffer is delivered to the target location, time saving and energy saving;
2, use the amount of creeping into of the control system control detection drilling apparatus of rig self, controllability is good, and numerical value is accurate, avoids manually placing the site error that sniffer is easy to generate;
3, two-way water inlet, the race amount of emitting is few, and the wastage record is accurately;
4, water inlet pipe is arranged on the outside of drilling rod, and surveying drilling apparatus integral body can be solid construction, is adapted at using on the rig.
Description of drawings
Accompanying drawing 1 is the structural representation of overlying strata water flowing fractured zone monitoring system of the present invention;
Accompanying drawing 2 is the structural representation of surveying drilling apparatus in the overlying strata water flowing fractured zone monitoring system.
Reference numeral is as follows:
1-surveys drilling apparatus; The 2-rig; 3-water filling control section; 4-capsule water drain valve; 5-shutoff water drain valve; 6-capsule hose connection; 7-shutoff hose connection; The 8-water source interface; The 9-drill bit; The 10-drilling rod; The 11-connection handle; 12-first connector; 13-second connector; Shutoff capsule before the 14-; Shutoff capsule behind the 15-; 16-first water inlet pipe; 17-second water inlet pipe; The 18-top board; 19-boring.
Embodiment
Referring to accompanying drawing 1, it shows a kind of overlying strata water flowing fractured zone monitoring system, comprises rig, surveys drilling apparatus and water filling control section.
Referring to accompanying drawing 2, the detection drilling apparatus of overlying strata water flowing fractured zone monitoring system comprises drill bit, drilling rod and connection handle, drill bit, drilling rod and connection handle all adopt solid construction, drill bit is by the first connector jointed rod, drilling rod connects connection handle by second connector, and wherein drill bit adopts general coal seam drill bit to get final product, and connection handle is used for connecting rig, the minimum diameter of the diameter of drilling rod general little and first connector and second connector is about to it and screws in first connector and second connector.First connector and second connector have fin, shutoff capsule before first connector is equipped with, preceding shutoff capsule is between the fin and drill bit of first connector, be equipped with back shutoff capsule at second connector, back shutoff capsule is located two shutoff capsules with this between two fins of second connector.
Preceding shutoff capsule and back shutoff capsule all are hollow-core construction, can pass through dilation by water injection, for guaranteeing that capsule is not interfered the wall of a borehole when creeping into, the diameter of the preceding shutoff capsule before requiring to expand is less than the maximum gauge of first connector, the diameter of the back shutoff capsule before expanding is less than the maximum gauge of second connector, and maximum gauge is the connector diameter at fin place separately just; Simultaneously, the reliability of shutoff when surveying for assurance, the diameter of the preceding shutoff capsule after require expanding is greater than the maximum gauge of first connector, and the diameter of the back shutoff capsule after the expansion is greater than the maximum gauge of second connector, and maximum gauge is the connector diameter at fin place separately just.
For guaranteeing to survey the data reliability of wastage, survey drilling apparatus and adopt two water inlet structures, comprise first water inlet pipe and two groups of water intake mechanisms of second water inlet pipe.First water inlet pipe is used to the shutoff capsule to supply water so that its expansion, it inserts between second connector and connection handle, insertion can be adopted and set in advance modes such as groove at the second connector inwall and realize, axially extend to first connector from second connector along drilling rod, and entering part between first connector and the drilling rod, first water inlet pipe respectively has at least one water delivering orifice by the hollow-core construction inside of the Kong Zaiqian shutoff capsule on first connector and second connector and back shutoff capsule; Second water inlet pipe is used for surveying the water supply of fissure zone wastage, it inserts between second connector and connection handle equally, and extend to the link of second connector and drilling rod along second connector, make it between preceding shutoff capsule and back shutoff capsule, have at least one water delivering orifice like this.
Be to guarantee the effect of shutoff, preceding shutoff capsule and back shutoff capsule along survey the axial length of drilling apparatus greater than it along surveying drilling apparatus length radially, namely increased the length of effective block section.The shutoff capsule is preferably made by elastomeric material by being made by resilient material.
The water filling control section can be arranged in the anti-explosion safety box, comprise the capsule hose connection, the shutoff hose connection, the capsule water drain valve, shutoff water drain valve and water source interface, the capsule hose connection connects the capsule water drain valve, the shutoff hose connection connects the shutoff water drain valve, capsule water drain valve and the shutoff water drain valve water source interface that is connected in parallel, the other end of water source interface connects water pump simultaneously, the capsule water drain valve is provided with pressure transducer, the hydraulic pressure that is used for the monitoring capsule, thereby the swelling state by the water pressure monitoring capsule, be hydraulic pressure more large capsule expand more big, the shutoff water drain valve is provided with pressure transducer and flow sensor, be used for its injection flow of record and water injection pressure, the water inlet of first water inlet pipe and capsule hose connection match, and the water inlet of second water inlet pipe and shutoff hose connection match, and generally adopt general pressure fluid joint to get final product, water inlet pipe is not connected at ordinary times with hose connection, just connects when drilling apparatus enters the working position and needs water filling surveying.The water filling control section can also comprise equipment such as controller, battery, display, as pressure transducer is connected controller with flow sensor data is carried out interpretation of records etc., and it is the common practise of this area, will not tire out at this and state.
The detection drilling method of above-mentioned overlying strata water flowing fractured zone monitoring system may further comprise the steps:
1. determine to carry out top board position and the drilling depth of fissure zone monitoring;
2. will survey drilling apparatus by connection handle and be installed on the rig, start rig, creep into from determined top board position;
3. the amount of creeping into of drilling apparatus is surveyed in the control system of rig monitoring, when the amount of creeping into reaches determined drilling depth, stops to creep into;
4. the water inlet with first water inlet pipe is connected on the capsule hose connection of water filling control section, opens the capsule water drain valve, gives preceding shutoff capsule and the water filling of back shutoff capsule, capsule is expanded, and keep hydraulic pressure to make capsule keep swelling state;
5. the water inlet with second water inlet pipe is connected on the shutoff hose connection of water filling control section, open the shutoff water drain valve, water filling in the boring between the two capsules, by the monitoring of the flow sensor on shutoff water drain valve water injection rate, by the pressure sensor monitoring water filling hydraulic pressure on the shutoff water drain valve, and water injection rate and water filling hydraulic pressure can be sent in the controller, calculate the water injection rate that this surveys accumulation;
6. when the when 5. the water filling hydraulic pressure of monitoring rises to 3-5 times of beginning water filling hydraulic pressure in the step, close the shutoff water drain valve, stop water filling, with the water injection rate of the accumulation of record as wastage;
7. close the capsule water drain valve, the water in the capsule is flowed out, will survey drilling apparatus then and from boring, withdraw from.
The above; only be the preferable embodiment of patent of the present invention; but the protection domain of patent of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that patent of the present invention discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of patent of the present invention.
Claims (1)
1. the detection drilling method of an overlying strata water flowing fractured zone monitoring system, described overlying strata water flowing fractured zone monitoring system comprise rig, survey drilling apparatus and water filling control section,
Described detection drilling apparatus comprises drill bit, drilling rod and connection handle, and it can connect described rig by described connection handle;
Described drill bit connects described drilling rod by first connector, shutoff capsule before being equipped with on described first connector;
Described drilling rod connects described connection handle by second connector, is equipped with shutoff capsule in back on described second connector;
Shutoff capsule and described back shutoff capsule are hollow-core construction before described, can pass through dilation by water injection, the diameter of the described preceding shutoff capsule before expanding is less than the maximum gauge of described first connector, and the diameter of the described preceding shutoff capsule after the expansion is greater than the maximum gauge of described first connector; The diameter of the described back shutoff capsule before expanding is less than the maximum gauge of described second connector, and the diameter of the described back shutoff capsule after the expansion is greater than the maximum gauge of described second connector;
Described detection drilling apparatus also comprises first water inlet pipe and second water inlet pipe, described first water inlet pipe axially extends to described first connector from described second connector along described drilling rod, and its have at least a part between described first connector and the described drilling rod, have a part at least between described second connector and described drilling rod, described first water inlet pipe respectively has at least one water delivering orifice in the hollow-core construction inside of shutoff capsule and the described capsule of shutoff afterwards described before; Described second water inlet pipe has a part at least described before between shutoff capsule and the described drilling rod, and described second water inlet pipe has at least one water delivering orifice between shutoff capsule and the described capsule of shutoff afterwards before described;
Described water filling control section comprises the capsule hose connection, the shutoff hose connection, the capsule water drain valve, shutoff water drain valve and water source interface, described capsule hose connection connects described capsule water drain valve, described shutoff hose connection connects the shutoff water drain valve, described capsule water drain valve and the shutoff water drain valve described water source interface that is connected in parallel, described capsule water drain valve is provided with pressure transducer, described shutoff water drain valve is provided with pressure transducer and flow sensor, the water inlet of described first water inlet pipe can fixedly connected capsule hose connection, the water inlet of described second water inlet pipe can fixedly connected shutoff hose connection
It is characterized in that: described detection drilling method may further comprise the steps:
1. determine to carry out top board position and the drilling depth of fissure zone monitoring;
2. will survey drilling apparatus by connection handle and be installed on the rig, start rig, creep into from determined top board position;
3. the amount of creeping into of drilling apparatus is surveyed in the control system of rig monitoring, when the amount of creeping into reaches determined drilling depth, stops to creep into;
4. the water inlet with first water inlet pipe is connected on the capsule hose connection of water filling control section, opens the capsule water drain valve, gives preceding shutoff capsule and the water filling of back shutoff capsule, capsule is expanded, and keep hydraulic pressure to make capsule keep swelling state;
5. the water inlet with second water inlet pipe is connected on the shutoff hose connection of water filling control section, open the shutoff water drain valve, water filling in the boring between the two capsules, by the water injection rate of the record of the flow sensor on shutoff water drain valve accumulation, monitor water filling hydraulic pressure at any time by the pressure transducer on the shutoff water drain valve;
6. when the when 5. the water filling hydraulic pressure of monitoring rises to 3-5 times of beginning water filling hydraulic pressure in the step, close the shutoff water drain valve, stop water filling, with the water injection rate of the accumulation of record as wastage;
7. close the capsule water drain valve, the water in the capsule is flowed out, will survey drilling apparatus then and from boring, withdraw from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110457012 CN102565859B (en) | 2011-12-31 | 2011-12-31 | Overburden water flowing fractured zone observation system and detection drilling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110457012 CN102565859B (en) | 2011-12-31 | 2011-12-31 | Overburden water flowing fractured zone observation system and detection drilling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102565859A CN102565859A (en) | 2012-07-11 |
| CN102565859B true CN102565859B (en) | 2013-08-07 |
Family
ID=46411725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110457012 Expired - Fee Related CN102565859B (en) | 2011-12-31 | 2011-12-31 | Overburden water flowing fractured zone observation system and detection drilling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102565859B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764837A (en) * | 2020-07-06 | 2020-10-13 | 中国矿业大学 | Double-ended water plugging detection rod, overlying rock fissure drilling-testing integrated device and drilling-testing method |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939143B (en) * | 2014-04-17 | 2015-12-30 | 中国矿业大学 | The assay method of heading zone of fracture influence basin and device thereof |
| CN104179491B (en) * | 2014-08-26 | 2018-12-28 | 西安科技大学 | Underground rock cranny drilling supersonic sounding device and system |
| CN104632075B (en) * | 2014-12-16 | 2016-09-21 | 山东科技大学 | A kind of brill for the detection of overlying strata crack surveys integral system and method |
| CN104763372A (en) * | 2015-02-12 | 2015-07-08 | 中国矿业大学 | Pretreatment method for improving compactness of coal seam water injection hole |
| CN105134181B (en) * | 2015-06-25 | 2017-10-27 | 山东科技大学 | Overburden Rock Failure band multistage blocks synchronous leak detection method |
| CN105003255B (en) * | 2015-06-25 | 2017-09-01 | 山东科技大学 | Synchronous Leak Detection Method for Multi-stage Blocking in Floor Mining Destruction Zone |
| CN105717019B (en) * | 2016-01-28 | 2018-04-06 | 山东科技大学 | Floor rock infiltration coefficient test simulation method |
| CN108442917B (en) * | 2017-12-14 | 2021-07-06 | 中国矿业大学 | A continuous real-time monitoring method for the height of the water-conducting fracture zone of the coal seam roof |
| CN108318931B (en) * | 2017-12-14 | 2019-12-31 | 中国矿业大学 | High-precision, intrinsically safe coal seam roof water-conducting fracture zone height real-time monitoring method |
| CN108019149B (en) * | 2017-12-19 | 2018-10-12 | 山东大学 | A kind of drilling apparatus and its working method for TSP advance geologic predictions |
| CN109596433A (en) * | 2018-12-13 | 2019-04-09 | 天地科技股份有限公司 | Crack of coal-mine roof Evolution dynamics detection device and method |
| CN110107284B (en) * | 2019-04-28 | 2022-08-05 | 扎赉诺尔煤业有限责任公司 | Drilling and testing system and method for detecting height of water flowing fractured zone through water pressure |
| CN111206888B (en) * | 2020-03-16 | 2024-10-25 | 四川大学 | Drilling crack peeping instrument based on continuous oil pipe |
| CN112177558B (en) * | 2020-10-13 | 2021-06-25 | 中国矿业大学 | Novel underground coal gasification exploitation process leakage plugging device |
| CN112557279A (en) * | 2020-12-30 | 2021-03-26 | 陕西南梁矿业有限公司 | Weathered bedrock hole-fracture vertical permeability testing device and method |
| CN113027513B (en) * | 2021-04-30 | 2023-05-16 | 西安科技大学 | Device and method for predicting fracture zone by underground segmented hole-elevation water injection |
| CN113237815A (en) * | 2021-05-20 | 2021-08-10 | 中国矿业大学 | Observation instrument and method for observing multidirectional permeability of rock mass based on water injection in drilling |
| CN113216936A (en) * | 2021-06-21 | 2021-08-06 | 山东科技大学 | Overburden crack detection drilling device with data monitoring function |
| CN114264586A (en) * | 2021-12-03 | 2022-04-01 | 晋能控股煤业集团有限公司 | Drilling water injection test system |
| CN114184153B (en) * | 2021-12-06 | 2022-07-19 | 中国矿业大学 | Monitoring method for composite height conductance of overlying rock and soil layer in stope based on optical fiber and piezometer |
| CN115032683B (en) * | 2022-08-11 | 2022-12-27 | 山东省地质矿产勘查开发局第四地质大队(山东省第四地质矿产勘查院) | Ultrasonic wave surrounding rock crack detection device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1571677A (en) * | 1978-04-07 | 1980-07-16 | Shell Int Research | Pipe section for use in a borehole |
| CN1062974A (en) * | 1990-12-25 | 1992-07-22 | 山东矿业学院 | Boring subsection water injection, the inflation technology of leaking hunting |
| CN101245701A (en) * | 2007-05-28 | 2008-08-20 | 中国矿业大学(北京) | Downhole Conductivity Observer and Its Observation Method |
| CN201671622U (en) * | 2010-05-07 | 2010-12-15 | 西安科技大学 | Coal mine overlying strata water-conducting crack belt upward hole observer |
| CN101892841A (en) * | 2010-07-05 | 2010-11-24 | 陕西省煤炭地质测量技术中心 | Observation system of water injection in fractured zone in coal seam goaf |
-
2011
- 2011-12-31 CN CN 201110457012 patent/CN102565859B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764837A (en) * | 2020-07-06 | 2020-10-13 | 中国矿业大学 | Double-ended water plugging detection rod, overlying rock fissure drilling-testing integrated device and drilling-testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102565859A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102565859B (en) | Overburden water flowing fractured zone observation system and detection drilling method thereof | |
| CN102445710B (en) | Detecting drilling device for monitoring system of cover-rock water flowing fractured zone | |
| CN104632075B (en) | A kind of brill for the detection of overlying strata crack surveys integral system and method | |
| CN103512693B (en) | Coal and rock mass stress orientation monitoring method and device | |
| CN105372410B (en) | Double-end sealing leak detection combined geometry | |
| CN111456721B (en) | Multistage airbag rapid hole sealing gas pressure measuring device and measuring method | |
| CN103742129B (en) | The method of weak seam measuring gas pressure of coal bed by drilling hole | |
| CN101575969B (en) | Method for measuring pressure of coalbed gas | |
| CN106323534B (en) | A kind of self-drilling type artesian head in-situ testing device and its application method | |
| CN205229149U (en) | Bi -polar shutoff integrated observation system of leaking hunting | |
| CN101358455A (en) | Method and device for embedding lateral earth pressure sensor in soil | |
| CN110056342B (en) | Gas injection device and method for judging feasibility of open-seam mining by drilling gas injection | |
| CN105547721A (en) | Double-end blocking and leakage detection integrated observation method | |
| CN101858209A (en) | Synchronous Detection Method of Fracture Distribution in Floor Rock | |
| CN201671622U (en) | Coal mine overlying strata water-conducting crack belt upward hole observer | |
| CN110906577A (en) | Method and apparatus for installing geothermal heat exchangers | |
| CN108468566A (en) | Really method is put in spy to empty crystal to mine based on underground pencil directional drilling always | |
| US20150198009A1 (en) | Remedial technique for maintaining well casing | |
| CN103147741B (en) | Coal bed roadside pressure relief zone width measuring method based on drill hole gas leakage | |
| CN202393921U (en) | Detecting and drilling device for overlying strata water-flowing fractured zone monitoring system | |
| CN107829723A (en) | Rock body quality of mine Mining failure scope integral type detecting devices and detection method | |
| CN110107284B (en) | Drilling and testing system and method for detecting height of water flowing fractured zone through water pressure | |
| CN103939143A (en) | Method for measuring range of influence of crushed zones of coal bed roadway and device thereof | |
| CN104391042B (en) | Method of Ultrasonic Detecting Cracks in Deep Rocks of Roof and Floor in Goaf of Mine | |
| CN109596433A (en) | Crack of coal-mine roof Evolution dynamics detection device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20171231 |