NO345682B1 - System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft - Google Patents
System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft Download PDFInfo
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- NO345682B1 NO345682B1 NO20190909A NO20190909A NO345682B1 NO 345682 B1 NO345682 B1 NO 345682B1 NO 20190909 A NO20190909 A NO 20190909A NO 20190909 A NO20190909 A NO 20190909A NO 345682 B1 NO345682 B1 NO 345682B1
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- Prior art keywords
- grouting
- existing
- mineshaft
- pressure
- vertical shaft
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- 238000012544 monitoring process Methods 0.000 title claims description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 239000002002 slurry Substances 0.000 claims description 26
- 230000008859 change Effects 0.000 claims description 20
- 238000010276 construction Methods 0.000 claims description 9
- 230000008054 signal transmission Effects 0.000 claims description 3
- 229940084430 four-way Drugs 0.000 claims 1
- 239000003245 coal Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008521 reorganization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/10—Preparation of the ground
- E21D1/16—Preparation of the ground by petrification
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Description
Technical field
The present invention relates to a pre-grouting monitoring system, and specifically relates to a ground pre-grouting monitoring system for building a new coal mine deep vertical shaft under the condition of being adjacent to an existing mineshaft.
Background
In recent years, as the shallow resources of production coal mines are exhausted gradually, the majority of mine shafts urgently need being implemented the projects of secure reorganization and expansion and deep horizontal extension in order to ensure the sustainable development of mine shafts, for example, the mineshaft projects of new deep vertical shaft being built in industrial square are increasing day by day. As there have been a plurality of mineshafts in industrial squares, such as main shaft, auxiliary shaft, air shaft and the like, new deep vertical shafts being built will be adjacent to existing mineshafts under such circumstances. The distance between the new deep vertical shafts being built and the existing mineshaft generally is about 50-150m.
During construction of the new deep vertical shafts in coal mines, a grouting waterproof curtain around a mineshaft can be formed by adopting the ground pregrouting technology, and thereby the water inflow in the process of mineshaft constructions are substantially decreased, shaft sinking conditions are improved and the construction speed is increased. In industrial squares, the mineshaft of a new deep vertical shaft being built is deep and the water pressure of an aquifer is high, so the grouting pressure will be very high when ground pre-grouting is performed. And under the action of such high grouting pressure, the grouting slurry will be migrated very far along formation fractures. When the grouting slurry encounters the adjacent existing mineshafts, the high-pressure slurry will break shaft lining of existing mineshafts, which destroys the existing mineshafts and poses severe threaten to secure production for mine shafts. Nowadays in China, there have been a plurality of mine shaft accidents caused by breaking the proximal existing mineshafts when the ground pre-grouting is performed during newly building mineshafts in industrial squares. To sum up, at the time of performing ground pregrouting for new deep vertical shaft of coal mine being built under the condition of being adjacent to an existing mineshaft, scientific and reasonable monitoring system must be adopted to prevent the grouting high pressure slurry from breaking the proximal original mineshafts, and to ensure the secure operation for existing mineshafts.
Therefore, it has great significance to carry out the research on the ground pregrouting system monitoring for building a new deep vertical shaft of a coal mine under the condition of being adjacent to an existing mineshaft.
CN 203573178 U discloses a grouting pressure control device which may monitor the grouting pressure and the grouting amount in the grouting.
CN 204492745 U discloses a device for monitoring water pressure between duallayer composite shaft walls to determine the grouting opportunity.
CN 101586459 U discloses a deep well grouting pressure reduction system for underground pressure measurement and ground throttle control.
Summary of the invention
The purpose of the present invention is to provide a ground pre-grouting monitoring system for building a new deep vertical shaft of a coal mine under the condition of being adjacent to an existing mineshaft, so as to at least solve the problem that the injected high-pressure slurry breaks existing mineshafts adjacent to the new deep vertical shaft being built and cause severe secure accident to the existing mineshafts when ground pre-grouting for a new deep vertical shaft of the coal mine being built is performed under the current condition of being adjacent to an existing mineshaft.
In order to achieve the above purpose, the following technical solutions are provided in the present invention:
A ground pre-grouting system for monitoring for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, the pre-grouting monitoring system comprises: a grouting pressure control system arranged in a ground pre-grouting pump station on the peripheral of the new deep vertical shaft being built for monitoring a change value of grouting pressure; a water level automatic monitoring system arranged in a observation hole between the new deep vertical shaft being built and existing mineshaft adjacent to the new deep vertical shaft being built for monitoring a change value of water level in the observation hole which is caused by grouting slurry; and a shaft lining pressure relief system arranged on a shaft lining of the existing mineshaft. When the slurry pressure diffused and transmitted to the shaft lining of the existing mineshaft exceeds a designed external load value of the shaft lining of the existing mineshaft, the shaft lining pressure relief system will automatically relieve the pressure for preventing the shaft lining of the existing mineshafts from being destroyed.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, the grouting pressure control system preferably comprises: a grouting pipeline for transporting the grouting slurry in the ground pre-grouting pump station into a plurality of grouting holes; and a high-pressure four-way valve is arranged on the grouting pipeline, both a first connection port and a second connection port of the high pressure four-way valve are connected onto the grouting pipeline, and the first connection port is connected to a grouting pump via a high pressure grouting hose, the second connection port is connected to a grouting pipe port via the high pressure grouting hose.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, preferably, a pressure sensor is installed on a third connection port of the highpressure four-way valve, and a pressure relief valve is installed on a fourth connection port of the high-pressure four-way valve; and both the pressure sensor and the grouting pump are connected to a computer via signal transmission lines, the computer receives the signal(s) from the pressure sensor, and controls whether the grouting pump works and controls opening and shutting of the pressure relief valve.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, preferably, the plurality of grouting holes are arranged circumferentially around the periphery of the new deep vertical shaft being built.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, preferably, the observation hole is arranged at the middle position between the new deep vertical shaft being built and the existing mineshaft adjacent to the new deep vertical shaft being built.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, preferably, the water level automatic monitoring system is a water level automatic monitor for monitoring the change situation of the water level in the observation hole which is caused by grouting slurry; the water level change signal from the water level automatic monitor is transmitted onto the computer, the computer issues the instruction of stopping grouting or not to a grouting pump after receiving the water level change signal.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, preferably, a pressure relief hole is arranged on the shaft lining of the existing mineshaft adjacent to the new deep vertical shaft being built, which is opposite to the new deep vertical shaft being built, the shaft lining pressure relief system is installed inside of the shaft lining of the existing mineshaft via the pressure relief hole, and the outside of the shaft lining of the existing mineshaft is an aquifer.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, preferably, the shaft lining pressure relief system comprises: a high-pressure threeway valve, a first connection port of which is connected to a pressure relief steel pipe passing through the shaft lining of the existing mineshaft and connecting the pressure relief hole; a high-pressure ball valve connected to a second connection port of the high pressure three-way valve; and an automatic pressure relief valve connected to a third connection port of the high pressure three-way valve.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, preferably, a reinforced steel plate is further arranged onto the pressure relief steel pipe, and the reinforced steel plate is fixed onto an inside surface of the shaft lining of the existing mineshaft.
In the above-mentioned ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft, preferably, a gasket is further arranged onto the pressure relief steel pipe, and the gasket is located between the reinforced steel plate and the shaft lining of the existing mineshaft. And the reinforced steel plate is fixed onto the shaft lining of the existing mineshaft by a fixed short anchor rod for preventing the pressure relief steel pipe from being ejected out by high-pressure slurry and high-pressure water.
Compared with the closest prior art, the technical solutions provided in the present invention have the following excellent effects:
The present invention adopts the protection of the triple monitoring systems including the grouting pressure control system, the water level automatic monitoring system and the shaft lining pressure relief system, so that the ground pre-grouting monitoring system for a new deep vertical shaft of a coal mine being built under the condition of being adjacent to an existing mineshaft in the present application is safer and more scientific and reasonable, and is capable of effectively preventing high-pressure slurry for grouting from destroying the adjacent existing mineshafts, and ensuring safe operation of the existing mineshaft.
Brief description of the drawings
The drawings constituting a part of the present application are used to provide further understanding to the present invention. And the schematic examples of the present invention and the description thereto are used to explain the present invention, without the undue limitation(s) to the present invention. Wherein:
Figure 1 is the schematic diagram of the grouting pressure control system in the examples of the present invention;
Figure 2 is the schematic diagram that the water level automatic monitoring system which is arranged between a new deep vertical shaft being built and existing mineshafts in the examples of the present invention;
Figure 3 is the schematic diagram of the shaft lining pressure relief system of existing mineshafts in the examples of the present invention;
The illustration to reference numbers: 1-grouting pressure control system; 11-grouting pump; 12-signal transmission line; 13-computer; 14-high-pressure grouting hose; 15-high-pressure four-way valve; 16-pressure relief valve; 17-pressure sensor; 18-grouting pipe port; 2-water level automatic monitoring system; 21-grouting hole; 22-new deep vertical shaft being built; 23-existing wind mineshaft; 24-observation hole; 25-existing main mineshaft; 26-existing auxiliary mineshaft; 3-shaft lining pressure relief system; 31-aquifer; 32-the shaft lining of existing mineshaft; 33-pressure relief hole; 34-pressure relief steel pipe; 35-fixed short anchor rod; 36-gasket; 37-reinforced steel plate; 38-high-pressure three-way valve; 39-automatic pressure relief valve; and 310-high pressure ball valve.
Detailed description of the invention
The present invention will be described in details bellow with reference to drawings in combination with examples. What needs to be stated is that the examples and the features in the examples in the present application can be combined one another under the condition without conflict.
In the description of the present invention, the direction or position relationships indicated in the terms “longitudinal direction”, “lateral direction”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom” and the like are shown on the basis of drawings, which are merely for the purpose of describing the present invention conveniently but not requiring that the present invention must be constructed and operated in the specific orientation and thus shall not be understood as the limitation to the present invention. The terms “joint” and “connection” used in the present invention shall be generalized understood, for example, they may be either detachable connection or fixed connection, and may be either direct connection or indirect connection via intermediate component(s), the concrete meaning of the above terms may be understood according to specific condition(s) for those skilled in the art.
As shown in Fig.1 to Fig. 3, a ground pre-grouting monitoring system for building a new deep vertical shaft of a coal mine under the condition of being adjacent to an existing mineshaft is provided according to the example in the present invention.
The pre-grouting monitoring system is controlled by computer 13, and the pregrouting monitoring system comprises:
a grouting pressure control system 1 arranged in the ground pre-grouting pump station on the periphery of a new deep vertical shaft being built 22 for precisely controlling the change value of grouting pressure; In order to be capable of observing the diffusion condition of grouting slurry and further control the change situation of grouting pressure, thereby achieving the technical effect of multiple protecting the shaft lining of existing mineshafts, an observation hole 24 is further arranged in the present invention; a water level automatic monitoring system 2 arranged in the observation hole 24 between the new deep vertical shaft being built 22 and adjacent existing mineshafts for monitoring the change value of the water level in the observation hole 24. In order to make the shaft lining of the existing mineshafts have multiple protective barriers, a shaft lining pressure relief system 3 is further arranged in the present invention, and the shaft lining pressure relief system 3 is arranged on the shaft lining of existing mineshaft 32. When the slurry pressure diffused and transmitted to the shaft lining of the existing mineshaft exceeds a designed external load value of the shaft lining of the existing mineshaft, the shaft lining pressure relief system 3 will automatically relieve the pressure for preventing the shaft lining of the existing mineshafts from being destroyed.
The grouting pressure control system 1 comprises a grouting pipeline for transporting the grouting slurry in the ground pre-grouting pump station into a plurality of grouting holes 21. A high-pressure four-way valve 15 is arranged on the grouting pipeline, i.e., the high pressure four-way valve 15 is arranged at a certain position on the high-pressure grouting hose 14 between a grouting pump 11 and a grouting pipe interface 18, and is located in the ground pre-grouting pump station. More specifically, both a first connection port and a second connection port of the high pressure four-way valve 15 are connected onto the grouting pipeline, and the first connection port is connected to the grouting pump 11 via a high pressure grouting hose 14, and the second connection port is connected to the grouting pipe interface 18 via the high pressure grouting hose 14. A pressure sensor 17 is installed on a third connection port of the high pressure four-way valve 15, and a pressure relief valve 16 is installed on a fourth connection port of the high pressure four-way valve 15. And the pressure sensor 17, the pressure relief valve 16 and the grouting pump 11 all are connected to the computer 13 via signal transmission lines 12, and the computer 13 receives the signal(s) from the pressure sensor 17 and controls whether the grouting pump 11 works and controls opening and shutting of the pressure relief valve16.
Further as shown in Fig.2, in the specific example of the present invention, a plurality of grouting holes 21 are around the periphery of the new deep vertical shaft being built 22 on circumferential arrangement for forming grouting waterproof curtain around the new deep vertical shaft being built 22 and thereby substantially decreasing the water inflow in the process of mineshaft constructions, improving shaft sinking conditions and increasing the construction speed. Preferably, the circle diameter of the grouting hole 21 is 15-40m (i.e., the distance between the grouting hole 21 and the new deep vertical shaft being built 22 is 15-40m). The number of the grouting hole 21 in the embodiments of the present invention is preferably 8.
The observation hole 24 is arranged by the construction between the new deep vertical shaft being built 22 and existing mineshafts (existing mineshafts comprise a plurality of mineshafts, such as an existing main mineshaft 25, an existing wind mineshaft 23 and an existing auxiliary mineshaft 26). And a water level automatic monitoring system 2 is installed in the observation hole 24 for monitoring the change condition of water level in the observation hole 24.
In the specific example of the present invention, the observation hole 24 is arranged outside of the grouting waterproof curtain and has a certain distance from the new deep vertical shaft being built 22, the purpose thereof is capable of performing the detection on the diffusion condition of the grouting slurry before the grouting slurry diffuses to the new deep vertical shaft being built 22, and thereby preventing accident(s) from occurring. Preferably, the observation hole 24 is arranged at the middle position between the new deep vertical shaft being built 22 and the adjacent existing mineshafts.
In the specific example of the present invention, the water level automatic monitoring system 2 is a water level automatic monitor, and the water level automatic monitor is arranged in the observation hole 24 for monitoring the change condition of the water level in the observation hole 24. Specifically, the water level automatic monitor is hanged by a steel wire rope, and lowed to 20m below the water surface in the observation hole 24.The water level change signal from water level automatic monitor is transmitted onto the computer 13, the computer 13 issues the instruction of stopping grouting or not to the grouting pump 11 after receiving the water level change signal.
In the specific example of the present invention, further as shown in Fig.3, a pressure relief hole 33 is arranged on the shaft lining of the existing mineshaft 32 adjacent to the new deep vertical shaft being built 22, which is opposite to the new deep vertical shaft being built 22. The shaft lining pressure relief system 3 is installed on the inside of the shaft lining of existing mineshaft 32 via the pressure relief hole 33, and the outside of the shaft lining of existing mineshaft 32 is an aquifer 31.
In the specific example of the present invention, the shaft lining pressure relief system 3 comprises: a high pressure three-way valve 38, the first connection port of which is connected to a pressure relief steel pipe 34whichpasses through the shaft lining of existing mineshaft 32 and is connected to the pressure relief hole 33; a high pressure ball valve 310 connected to the second connection port of the high pressure three-way valve 38; an automatic pressure relief valve 39 connected to the third connection port of the high pressure three-way valve 38, which can achieve the function of automatic pressure relief. A reinforced steel plate 37 is further arranged onto the pressure relief steel pipe 34 and the reinforced steel plate 37 is fixed onto the inside surface of the shaft lining of existing mineshaft 32. Further preferably, a gasket 36 is further arranged onto the pressure relief steel pipe 34, the gasket 36 is located between the reinforced steel plate 37 and the shaft lining of existing mineshaft 32. And both the gasket 36 and the reinforced steel plate 37 are fixed onto the shaft lining of existing mineshaft 32 by fixed short anchor rod 35 for preventing the pressure relief steel pipe 34 from being ejected out by high pressure slurry and high-pressure water. In the example of the present invention, the gasket is arranged for preventing the pressure water from flowing into the existing mineshafts along the outside of the pressure relief hole 33 and the pressure relief steel pipe 34. In the embodiments of the present invention, the action of the reinforced steel plate 37 arranged is that the reinforced steel plate is fixed onto the shaft lining of existing mineshaft 32 by the fixed short anchor rod 35 to press the pressure relief steel pipe 34, thereby preventing the pressure water from ejecting out the pressure relief steel pipe 34 and then preventing the pressure water from running out of control and the shaft from being flooded . During the construction of pressure relief hole 33 in the example of the present invention, drill rod passes through the high-pressure ball valve 310 to perform the construction. The drill rod is pulled out and the valve of the high-pressure ball valve 310 is closed after the pressure relief hole 33 is drilled completely, to prevent the high-pressure water from flowing into mineshafts.
To sum up, the protection of the triple monitoring systems including the grouting pressure control system 1, the water level automatic monitoring system 2 and the shaft lining pressure relief system 3 is adopted in the present invention, which makes the ground pre-grouting monitoring system for a new deep vertical shaft of a coal mine being built under the condition of being adjacent to an existing mineshaft in the present invention more scientific and reasonable, and can effectively prevent the high pressure slurry of grouting from breaking the adjacent original mineshafts, and ensure secure operation for existing mineshafts, details are as follows:
As shown in Fig.1, in order to be capable of precisely controlling the grouting pressure and preventing too large slurry pressure from crushing adjacent existing mineshaft in the present invention, the grouting pressure control system 1 is thus arranged. A high pressure four-way valve 15 is arranged on the high pressure grouting hose 14 which is connected between the grouting pump 11 and the grouting pipe interface 18, and a pressure sensor 17 and a pressure relief valve 16 are installed on the high pressure four-way valve 15, The pressure sensor 17 is connected to the computer 13, and the change condition of the grouting pressure value is monitored in real time. When the grouting pressure value exceeds the designed value, the computer 13 will issue an instruction signal, and automatically cut off the power of the grouting pump 11, and simultaneously open the pressure relief valve 16 automatically to perform pressure relief, and thereby achieving the action of precisely controlling the grouting pressure. The pressure relief valve 16 is controlled by computer, the pressure relief valve 16 can be opened for automatic pressure relief only when the grouting pump 11 stops grouting.
As shown in Fig. 2, the observation hole 24 for grouting is arranged between the new deep vertical shaft being built 22 and adjacent existing mineshafts, and the water level automatic monitor is installed in the observation hole 24 for monitoring the water level change in the observation hole 24 in real time. When the grouting slurry diffuses to the observation hole 24 via rock fractures, the water level automatic monitor displays that the water level starts rising and issues the signal of water level change to the computer 13, the computer 13 issue the instruction to grouting pump 11, for stopping grouting.
As shown in Fig. 3, in the direction just corresponding to the new deep vertical shaft being built 22, the automatic pressure relief valve 39 is installed by drilling on the shaft lining of existing mineshaft at the position of the existing mineshaft adjacent to aquifer 31. When the grouting slurry diffuses and moves to the shaft well of existing mineshaft and the pressure of the grouting slurry thereon exceeds the designed external load value of the shaft lining of the existing mineshaft, the automatic pressure relief valve 39 automatically opens for pressure relief to ensure preventing the existing mineshaft from being destroyed.
The above-mentioned contents are merely preferred example(s) of the present invention and are not used to limit the present invention. The present invention may have various modifications and changes for those skilled in the art. Any modification(s), equivalent substitution(s), improvement(s) and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (10)
1. A ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32), characterized in that the pre-grouting monitoring system comprises:
a grouting pressure control system (1) arranged in a ground pre-grouting pump station on the periphery of the new deep vertical shaft being built (22) for monitoring a change value of grouting pressure;
a water level automatic monitoring system (2) arranged in an observation hole (24) between the new deep vertical shaft being built (22) and the existing mineshaft (32) adjacent to the new deep vertical shaft being built (22) for monitoring a change value of water level in the observation hole (24); and
a shaft lining pressure relief system (3) arranged on a shaft lining of the existing mineshaft (32), and automatically relieving the pressure for preventing the shaft lining of the existing mineshaft (32) from being destroyed when a slurry pressure diffused and transmitted to the shaft lining of the existing mineshaft (32) exceeds a designed external load value of the shaft lining of the existing mineshaft (32).
2. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 1, characterized in that the grouting pressure control system (1) comprises:
a grouting pipeline for transporting a grouting slurry in the ground pregrouting pump station into a plurality of grouting holes (21); and
a high-pressure four-way valve arranged on the grouting pipeline, wherein both a first connection port and a second connection port of the high pressure fourway valve (15) are connected onto the grouting pipeline, and the first connection port is connected to a grouting pump (11) via a high pressure grouting hose (14), the second connection port is connected to a grouting pipe interface (18) via the high pressure grouting hose (14).
3. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 2, characterized in that
a pressure sensor (17) is installed on a third connection port of the high pressure four-way valve (15), and a pressure relief valve (16) is installed on a fourth connection port of the high pressure four-way valve (15);
and both the pressure sensor (17) and the grouting pump (11) are connected to a computer (13) via signal transmission lines, the computer (13) receives a signal from the pressure sensor (17), controls whether the grouting pump (11) works and controls opening and shutting of the pressure relief valve (16).
4. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 2, characterized in that
the plurality of the grouting holes (21) are arranged circumferentially around the periphery of the new deep vertical shaft under construction.
5. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 1, characterized in that
the observation hole (24) is arranged at the middle position between the new deep vertical shaft being built (22) and the existing mineshaft (32) adjacent to the new deep vertical shaft being built (22).
6. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 1 or 5, characterized in that
the water level automatic monitoring system (2) is a water level automatic monitor for monitoring the change situation of the water level in the observation hole (24) caused by grouting slurry; a water level change signal from the water level automatic monitor is transmitted onto the computer (13), the computer (13) issues the instruction of stopping grouting or not to the grouting pump (11) after receiving the water level change signal.
7. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 1, characterized in that
a pressure relief hole (33) is arranged on the shaft lining of the existing mineshaft (32) adjacent to the new deep vertical shaft being built (22), which is opposite to the new deep vertical shaft being built (22), the shaft lining pressure relief system (3) is installed on an inside of the shaft lining of the existing mineshaft (32) via the pressure relief hole (33), and an outside of the shaft lining of the existing mineshaft (32) is an aquifer (31).
8. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 7, characterized in that the shaft lining pressure relief system (3) comprises:
a high-pressure three-way valve (38), a first connection port of which is connected to a pressure relief steel pipe (34) which passes through the shaft lining of the existing mineshaft (32) and is connected to the pressure relief hole (33);
a high-pressure ball valve (310) connected to a second connection port of the high-pressure three-way valve (38); and
an automatic pressure relief valve (39) connected to a third connection port of the high-pressure three-way valve (38).
9. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 8, characterized in that
a reinforced steel plate (37) is further arranged onto the pressure relief steel pipe (34) and is fixed onto an inside surface of the shaft lining of the existing mineshaft (32).
10. The ground pre-grouting monitoring system for building a new deep vertical shaft under the condition of being adjacent to an existing mineshaft (32) according to claim 9, characterized in that
a gasket (36) is further arranged onto the pressure relief steel pipe (34) and is located between the reinforced steel plate (37) and the shaft lining of the existing mineshaft (32); and the reinforced steel plate (37) is fixed onto the shaft lining of the existing mineshaft (32) by a fixed short anchor rod for preventing the pressure relief steel pipe (34) from being ejected out by high pressure slurry and high pressure water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710113252.9A CN106640090B (en) | 2017-02-28 | 2017-02-28 | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions |
| PCT/CN2017/117960 WO2018157654A1 (en) | 2017-02-28 | 2017-12-22 | System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO20190909A1 NO20190909A1 (en) | 2019-07-18 |
| NO345682B1 true NO345682B1 (en) | 2021-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO20190909A NO345682B1 (en) | 2017-02-28 | 2017-12-22 | System for monitoring ground pre-grouting of newly-built deep vertical shaft of colliery under the condition of adjacency to existing mineshaft |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106640090B (en) |
| NO (1) | NO345682B1 (en) |
| WO (1) | WO2018157654A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640090B (en) * | 2017-02-28 | 2018-01-02 | 安徽理工大学 | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586459A (en) * | 2009-06-19 | 2009-11-25 | 山东大学 | Deep well grouting pressure reduction system for underground pressure measurement and ground throttle control |
| CN203573178U (en) * | 2013-07-31 | 2014-04-30 | 曾胜 | Grouting slurry pressure control device |
| CN204492745U (en) * | 2015-01-12 | 2015-07-22 | 安徽理工大学 | Between monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858222B (en) * | 2010-05-25 | 2012-03-21 | 北京城建设计研究总院有限责任公司 | Method for controlling deformation in zero-distance tunneling of new tunnel under existing subway construction |
| KR101282184B1 (en) * | 2012-01-18 | 2013-07-04 | 주식회사 효원이앤씨 | Grouting apparatus |
| CN102979105A (en) * | 2012-12-15 | 2013-03-20 | 天津大学 | Underground water control method of wellhole grouting and seepage insulation |
| CN204609814U (en) * | 2015-05-12 | 2015-09-02 | 安徽理工大学 | A kind of deep thick alluvium bored shaft broken grouting orifice tube is anti-goes out device |
| CN106640090B (en) * | 2017-02-28 | 2018-01-02 | 安徽理工大学 | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions |
| CN206681739U (en) * | 2017-02-28 | 2017-11-28 | 安徽理工大学 | Newly-built Coal Mine depth vertical pre grouting from the surface monitoring system under neighbouring existing wellbore conditions |
-
2017
- 2017-02-28 CN CN201710113252.9A patent/CN106640090B/en active Active
- 2017-12-22 NO NO20190909A patent/NO345682B1/en not_active IP Right Cessation
- 2017-12-22 WO PCT/CN2017/117960 patent/WO2018157654A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586459A (en) * | 2009-06-19 | 2009-11-25 | 山东大学 | Deep well grouting pressure reduction system for underground pressure measurement and ground throttle control |
| CN203573178U (en) * | 2013-07-31 | 2014-04-30 | 曾胜 | Grouting slurry pressure control device |
| CN204492745U (en) * | 2015-01-12 | 2015-07-22 | 安徽理工大学 | Between monitoring two-layer compound Shaft Linings, hydraulic pressure is to determine the device of best time for injecting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106640090B (en) | 2018-01-02 |
| CN106640090A (en) | 2017-05-10 |
| NO20190909A1 (en) | 2019-07-18 |
| WO2018157654A1 (en) | 2018-09-07 |
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