CN111561310A

CN111561310A - Hydrogeology long-term drilling layering monitoring devices that sees

Info

Publication number: CN111561310A
Application number: CN202010387586.7A
Authority: CN
Inventors: 王经明; 徐清清; 徐守林; 金崇; 徐鲁勤
Original assignee: Beijing Huikun Technology Co ltd
Current assignee: Beijing Huikun Technology Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-08-21

Abstract

The invention provides a hydrogeology long-looking drilling hole layering monitoring device, wherein long-looking drilling holes are positioned in a loose layer and a bedrock layer, the loose layer and the bedrock layer respectively comprise a water-bearing layer and a water-resisting layer and comprise a packing system, and the packing system comprises a central shaft tube, a packer, a high-pressure hose and a pressure pump; the central siphon stretches into in the long hole of observing, the packer establishes ties on the central siphon, just the packer with the aquifer corresponds the setting, the packer includes packer and lower packer, the aquifer is located rather than corresponding go up between packer and the lower packer, high pressure hose with the packer communicates in proper order, the force pump is located the long outside of observing the hole, just the force pump with high pressure hose links to each other. The method can realize hydrological long-term observation single-hole multi-aquifer layered real-time monitoring, so that the hole diameter of the borehole is observed regularly for a long time, the installation process is simplified, the observation data is high-quality, and the aims of shortening the construction period and reducing the cost are fulfilled.

Description

Hydrogeology long-term drilling layering monitoring devices that sees

Technical Field

The invention relates to the technical field of hydrogeology, in particular to a hydrogeology long-term observation borehole layering monitoring device.

Background

The hydrogeology long-term observation hole, called the pilot hole for short, is a necessary project for hydrogeology exploration, mine water regime monitoring and water source area evaluation. However, conventionally, only one aquifer can be observed in one borehole, and as many observation holes as the number of aquifers must be constructed to observe a plurality of aquifers. Therefore, the engineering quantity is large, the manufacturing cost is high, and the construction period is long. Many mines are limited in construction sites, and the long-sight holes of different aquifers cannot be constructed in the same site, and the observation holes required for construction in different regions are required for observing different aquifers, so that the data of different aquifers cannot be compared, the hydraulic connection of different aquifers cannot be determined, and the hydrogeological conditions are difficult to correctly analyze. In order to save expenses, many mines adopt single-hole multi-aquifer mixed water level observation, which not only causes the distortion of water level data of each aquifer, but also artificially causes the overflown supply of a high-water-pressure aquifer to a low-water-pressure aquifer, thereby changing the aquifer which does not have threat to the mines into a dangerous source and causing the shortage of sufficient mining quantity for the water source. In order to solve the problems, hydrogeology technologists develop observation technologies of single-hole multi-aquifer such as a multistage complete monitoring well, a CMT monitoring well, a Waterio monitoring well, a Westbay MP monitoring well, a multi-channel tube monitoring well, a nested monitoring well and the like, but the methods cause overlarge observation hole diameter, overhigh cost, excessively complex installation process or poor aquifer separation, for example, insufficient expansion pressure when the expanded rubber is adopted, so that the data errors are overlarge and the significance is lost, and the hydrogeology technologists cannot be popularized and applied in mine hydrogeology work. At present, in the automatic observation of the long hole of the mine, only one drill hole is used for observing only one aquifer or mixed layer.

Disclosure of Invention

Therefore, the invention aims to provide a hydrogeology long-term drilling layered monitoring device, which can realize the technology and equipment for realizing the purposes of carrying out unmanned field management and economically and effectively observing the water levels and water temperatures of a plurality of aquifers in a single common drilling hole, remotely and wirelessly transmitting observation data to a data center through an intelligent terminal of the internet of things, carrying out computer calculation and analysis and providing results for users.

The invention provides a hydrogeology long-looking drilling hole layering monitoring device, wherein long-looking drilling holes are positioned in a unconsolidated formation and a bedrock formation, the bedrock formation is positioned at the lower side of the unconsolidated formation, the unconsolidated formation and the bedrock formation respectively comprise an aquifer and a water-resisting layer, the aquifer is positioned between the two water-resisting layers and comprises a packing system, and the packing system comprises a central shaft tube, a packer, a high-pressure hose and a pressure pump; the central siphon stretches into in the long hole of observing, the packer establishes ties on the central siphon, just the packer with the aquifer corresponds the setting, the packer includes packer and lower packer, the aquifer is located rather than corresponding go up between packer and the lower packer, high pressure hose with the packer communicates in proper order, the force pump is located the long outside of observing the hole, just the force pump with high pressure hose links to each other. The method can realize hydrological long-term observation single-hole multi-aquifer layered real-time monitoring, so that the hole diameter of the borehole is observed regularly for a long time, the installation process is simplified, the observation data is high-quality, and the aims of shortening the construction period and reducing the cost are fulfilled.

Further, the grouting system comprises a grouting pressure pump and a grouting high-pressure pipe; the grouting high-pressure pipe is placed in the central shaft pipe in a retractable manner, the grouting pressure pump is located on the outer side of the long sight drilling hole, and the grouting pressure pump is connected with the grouting high-pressure pipe.

The system further comprises a data acquisition system, wherein the data acquisition system comprises a sensor, a cable tube and a drilling monitoring terminal; the sensor is arranged in the position, corresponding to the aquifer, in the long-sight drilling hole, the drilling hole monitoring terminal is positioned at the top end of the long-sight drilling hole, and the sensor is connected with the drilling hole monitoring terminal through the cable tube.

Further, the monitoring system comprises a monitoring substation and a monitoring main station, wherein the monitoring substation and the monitoring main station are in signal connection with the drilling monitoring terminal through wireless signal transmission.

Further, the packer is made of a hollow steel tube shaft core and water-swelling rubber or steel bar swelling capsules.

Further, the central shaft tube is a hollow steel tube or a high-strength PVC tube.

Furthermore, the central axis pipe is provided with flower tubes at intervals, and the flower tubes are provided with round holes.

Further, the sensors include a water pressure sensor, a water temperature sensor and a probe.

Further, the cable pipe is formed by combining a plurality of wires or optical fibers and wrapping a waterproof and anti-corrosion protective layer on the outer side.

Further, the rock drilling system further comprises a seamless sleeve, wherein the seamless sleeve is positioned on a loose layer part of the long-looking borehole, and the seamless sleeve is positioned at a bedrock interface between the loose layer and the bedrock layer.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a pore-forming block diagram of a hydrogeological long borehole;

FIG. 2 is a schematic diagram of a structure of a layered hydrogeological long borehole;

FIG. 3 is a pore-forming block diagram of a first embodiment of a layered hydrogeological long term borehole;

FIG. 4 is a pore-forming block diagram of a second embodiment of a layered hydrogeological long term borehole;

fig. 5 shows a general structure diagram of a hydrogeology long-term borehole stratification monitoring device.

In the drawings are labeled:

1 seamless sleeve

2 Filter tube

3 Cement paste

4 sticking gravel

5 Loose layer

6-based rock formation

7 aquifer

8 Water barrier layer

9 bedrock interface

10 central shaft tube

11a upper packer

11b lower packer

12 high-pressure hose

13 cable tube

14 sensor

15 drilling water-resisting layer grouting section

16 drilling monitoring terminal

17 monitoring substation

18 monitoring master station

19 slip casting high-pressure pipe

20 grouting pressure pump

21 pressure pump

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the invention provides a hydrogeology long-looking borehole layering monitoring device, as shown in fig. 1, long-looking boreholes are located in a unconsolidated formation 5 and a bedrock formation 6, the bedrock formation 6 is located at the lower side of the unconsolidated formation 5, the unconsolidated formation 5 and the bedrock formation 6 both comprise an aquifer 7 and a water-resisting layer 8, the aquifer 7 is located between the two water-resisting layers 8, and with reference to fig. 2, the hydrogeology long-looking borehole layering monitoring device comprises a packing system, and the packing system comprises a central shaft tube 10, packers (11a and 11b), a high-pressure hose 12 and a pressure pump 21; the central siphon 10 stretches into in the long hole of observing, packer (11a, 11b) are established ties on the central siphon 10, just packer (11a, 11b) with aquifer 7 corresponds the setting, packer (11a, 11b) include packer 11a and lower packer 11b, aquifer 7 is located rather than corresponding go up between packer 11a and the lower packer 11b, high pressure hose 12 with packer (11a, 11b) communicate in proper order, force pump 21 is located the outside in long hole of observing, just force pump 21 with high pressure hose 12 links to each other.

Wherein, the packers (11a, 11b) are made of hollow steel tube cores and water-swelling rubber or reinforcing steel bar swelling capsules. The upper section of the capsule is provided with a water inlet or an air port which is connected with a high-pressure hose 12, and the other end of the high-pressure hose 12 is connected with a pressure pump 21 at the orifice. The capsule is inflated or filled with water by a pressure pump 21 through a high pressure hose 12, so that the capsule is expanded, and the aim of isolating the hydraulic connection between the target aquifer 7 and the other aquifers 7 is fulfilled. The middle shaft tube 10 is a hollow steel tube or a high-strength PVC tube, the flower tubes are arranged on the middle shaft tube 10 at intervals, and circular holes are formed in the flower tubes. Specifically, the bottom bracket tube 10 is a hollow steel tube or a high-strength PVC tube with an inner diameter of 40 mm. In the observation interval of the water-resisting layer 8 sealed by the packers (11a, 11b), the top and the bottom of the central shaft tube 10 and the middle of the central shaft tube are 1 central perforated pipes with the length of 1 meter every 10 meters, and it should be noted that the uppermost interval which does not need to be observed in the long-looking drilling hole is only perforated pipes with the length of 1 meter at the bottom of the interval. For example, the perforated pipe is formed by drilling a plurality of circular holes with the diameter of phi 10mm on the central axis pipe 10 according to a certain grid.

Wherein the pressure pump 21 is a device for providing an expansion pressure to the capsule in the bore. The hydraulic pressure pump is adopted to fill water or gas into the expansion capsule, and the capsule expands to realize the isolation of the target aquifer from other aquifers.

In one aspect of the embodiment of the present invention, the hydrogeology long-term borehole layer monitoring device further includes a grouting system, the grouting system includes a grouting pressure pump 20 and a grouting high-pressure pipe 19; the grouting high-pressure pipe 19 is placed in the central shaft pipe 10 in a retractable manner, the grouting pressure pump 20 is located on the outer side of the long sight drilled hole, and the grouting pressure pump 20 is connected with the grouting high-pressure pipe 19. The grouting pressure pump 20 is a device for supplying high-pressure cement slurry into the hole; the grouting high-pressure pipe 19 is a high-pressure hose with the diameter of 1cm and is arranged at the bottom of the drilling hole. High-pressure cement slurry pressurized by the grouting pressure pump 20 flows out from the bottom of the grouting high-pressure pipe 19, and the grouting high-pressure pipe 19 is continuously lifted along with the progress of grouting until the orifice, so that permanent sealing and water stopping of the full-bore casing pipe and the water-resisting layer section are realized. The grouting high pressure pipe 19 may be fed around a drum into the central shaft pipe 10 in the borehole or withdrawn from the central shaft pipe 10, and the upper end of the grouting high pressure pipe 19 is connected to the grouting pressure pump 20 by fixing a hollow pipe in the drum central shaft.

It should be noted that, the installation process technology of the monitoring device refers to a technology of accurately and nondestructively installing the borehole packer and the monitoring device in place in the borehole, that is, taking the central axis tube 10 as the center, combining the central axis tube 10, the packers (11a, 11b) and the sensor 14 according to the long-sight hole design, and realizing accurate and nondestructive installation; the bottom bracket tube 10 may be a steel tube or a high-strength PVC tube. This is also one of the main highlights of the invention. Specifically, according to the drilling histogram, the expanded rubber or the packing capsule is respectively arranged on the top plate and the bottom plate of each aquifer 7 to be observed. The sensor 14 is arranged outside the middle shaft steel pipe 10 for observing the water-containing layer section and is connected with the cable in the steel pipe through the special interface of the steel pipe wall. The cable combination is processed into a cable tube 13, and the cable tube is fixed on the inner side of the steel tube in the observation water-containing layer section and fixed on the outer side of the steel tube in the non-observation water-containing layer section, so that the cable tube is protected in the installation and use processes. Then, the inside of the bottom bracket tube 10 for the interval with water observation and the inside and outside of the borehole of the bottom bracket tube 10 for the interval with water non-observation are filled with cement slurry. Depending on the material of which the high-pressure capsule is filled, one of the following two methods may be used:

in the first method, as shown in fig. 3, each high-pressure capsule packer is connected in series on the bottom bracket tube 10, when the packer reaches the designed layer, chemical grout is injected into the packer at a certain pressure, and accumulated water or gas in the packer is discharged from the capsule because the grout pressure is higher than a hydraulic valve at the upper opening of the packer. The packer is permanently held in place at a certain pressure until the slurry sets. According to the method, before the packer is put in, the joint of the sensor outside the wall of the central shaft steel pipe and the cable is subjected to waterproof sealing, so that the water leakage is ensured.

And secondly, as shown in fig. 4, injecting water or gas into the packing capsules at high pressure to realize effective separation of the aquifer 7 during monitoring, then injecting cement slurry into the water-resisting layer sections between the packers and the central shaft tube at a pressure lower than that of the capsules, stopping grouting when the slurry in the central shaft tube 10 reaches the hole opening, and maintaining the water pressure of the capsules for 72 hours. If the water pressure difference between the water-containing layers is less than 0.5MPa, the packing capsules are changed into expanded rubber. If the water-swelling rubber seals water, when the swelling pressure of the swelling rubber reaches the maximum value, cement slurry is injected into the water-resisting layer section and the steel pipe between the packers under the pressure lower than that of the swelling rubber until the water-resisting layer section and the steel pipe reach the orifice, and then grouting is stopped.

In one aspect of the embodiment of the present invention, the hydrogeology long-term borehole stratification monitoring device further includes a data acquisition system, wherein the data acquisition system includes a sensor 14, a cable tube 13 and a borehole monitoring terminal 16; the sensor 14 is arranged in the position, corresponding to the aquifer 7, in the long sight drilling hole, the drilling hole monitoring terminal 16 is arranged at the top end of the long sight drilling hole, and the sensor 14 is connected with the drilling hole monitoring terminal 16 through the cable pipe 13. Preferably, the sensor 14 comprises a monitoring recorder such as a water pressure sensor, a water temperature sensor and a probe, and is a device for monitoring and recording parameters such as water pressure, water temperature and the like of the aquifer 7, and the probe is arranged between the upper packer 11a and the lower packer 11b of the section of the aquifer 7. When the cable tube 13 is a cable, a piezoelectric type sensing structure water pressure sensor and a thermocouple or thermistor type temperature sensor are used, and when the cable tube 13 is an optical cable, an optical fiber temperature or pressure sensor is used.

The cable tube 13 is a special multi-channel signal line formed by arranging one or more electric wires or optical fibers with different lengths in an outer jacket layer. In the current mature technology, one optical fiber can detect the same parameter at multiple points, and if multiple parameters need to be measured, multiple optical fibers are needed; one group of wires can only be connected with a monitoring recorder such as a sensor. Therefore, when multiple parameters such as water temperature and water pressure of a plurality of aquifers need to be monitored simultaneously in a single borehole, at least two optical fibers or a plurality of electric wires are needed. Both the electric wire and the optical fiber are fragile and are used in various complex drilling environments, so that the required electric wires or optical fibers with different lengths and outer cladding layers are combined according to the drilling design, and the waterproof and anticorrosive outer protective sleeve layer with the reinforcing steel bars is specially processed. The cable with the tailored outer protective jacket is referred to herein as a cable tube 13. The optical fiber or the electric wire in the cable tube 13 is connected with monitoring recorders such as various sensors and the like and a measurement and control terminal of the drill hole, and when the optical fiber or the electric wire is the electric wire, the electric energy is input to the sensors and the measurement signals of the sensors are transmitted to the drill hole monitoring terminal 16; in the case of an optical fiber, both the pulsed light source is sent to the fiber optic sensor and the sensed information from the fiber optic sensor is transmitted to the borehole monitoring terminal 16.

In one aspect of the embodiment of the present invention, as shown in fig. 5, the hydrogeological long-term drilling layered monitoring apparatus further includes a monitoring system, the monitoring system includes a monitoring substation 17 and a monitoring master station 18, and the monitoring substation 17 and the monitoring master station 18 are in signal connection with the drilling monitoring terminal 16 through wireless signal transmission. The drilling measurement and control terminal 16 is an integrated intelligent low-power consumption terminal device which collects, stores and processes monitoring data of monitoring recorders such as sensors, performs remote wireless communication and provides power for a monitoring and transmitting communication system, is a link between a field monitoring device and a monitoring main station 18, is suitable for data collection, storage, transmission and the like under severe environments such as power supply conditions and drilling, and can be connected with the sensors 14 with various parameters. The device is installed at the opening of the underground water level monitoring well. The selection of the measurement and control terminal equipment is determined according to what parameters are collected, the type of the adopted sensor and what communication mode is selected. The communication mode selection of the local area network, 4G/5G communication, satellite communication, etc. is based on the existence of communication signals and the economy.

The system comprises a LoRa/GPRS wireless data transmission gateway, namely a communication base station or a monitoring substation, and a local area network, wherein the local area network is used for acquiring monitoring data sent by all drilling measurement and control terminals within a range of 0-10 km, converting the received LoRa data or serial port data into IP data, and realizing remote transmission with a monitoring master station central server through networks such as GPRS. The gateway is required to communicate with each measurement and control terminal by adopting a LoRa signal and a star networking communication mode, the gateway sends data to the nodes, the target nodes are awakened by address codes, and other nodes are not awakened; the data returned by the nodes to the gateway is transmitted transparently, other nodes are not awakened, and the nodes do not communicate with each other. The monitoring master station 18 is a central server, which refers to a computer that manages resources and provides services to users. The central software is responsible for communicating with field devices, analyzing data and providing data support for upper computer application functions, is an indispensable part of the system and is special software. The cable tube 13, the sensor 14, the drilling measurement and control terminal 16, the LoRa/GPRS wireless data transmission gateway, the central software and the server are all mature matching technologies and products which can be purchased in the market, and the cable tube 13 can be customized and processed.

In one aspect of an embodiment of the invention, as shown in fig. 1, the hydrogeological long term borehole stratification monitoring device further comprises a seamless casing 1, wherein the seamless casing 1 is located in a unconsolidated formation 5 portion of the long term borehole, and the seamless casing 1 is located at a bedrock interface 9 between the unconsolidated formation 5 and the bedrock formation 6. The seamless sleeve 1 plays a role in reinforcing the side wall of the loose layer 5, and the strength of the long-term drilling hole is ensured.

In the specific using process of the invention, the specific operation process is as follows:

step 10, drilling a hole, and putting the seamless casing pipe 1, the filter pipe 2, the cement paste 3 and the attached gravel 4 into the loose layer 5 above the bedrock interface 9 for layered sealing water stop, wherein after the bedrock layer 6 is a structure of a bare hole wall, the accurate starting and stopping depths of the aquifer 7 to be observed are determined according to a drilling hydrological histogram.

And 20, washing the aquifer 7 of each long-looking drilled hole until the water is clear.

And step 30, carrying out layered pressure measurement on the aquifer 7 needing long-term observation. The method comprises the following steps: and (3) putting isolation capsules below the water barriers of the bottom plate and the top plate of the target aquifer 7, wherein the capsules are connected in series by a high-pressure hose 12, the middle parts of the two capsules correspond to the aquifer 7 and are provided with a water pressure sensor 14, and a cable pipe 13 of the water pressure sensor penetrates through the upper capsule to reach an orifice drilling monitoring terminal 16, such as a data acquisition display. The upper capsule is connected by a high pressure hose 12 to an orifice pressure pump 21. The pressure pump 21 is activated to fill the capsule with a liquid or gas at a given pressure, typically more than 2 times the water pressure of the intended aquifer, and to maintain the pressure of the pressure pump. The pressure of the sensor 14 is recorded. Whether the air injection or the liquid injection is carried out on the expansion capsule in the hole depends on the burial depth of the water level in the drill hole. Wherein the gas injection no matter drilling water level burial depth size all adapts to, especially when drilling water level burial depth is too big, must adapt to the gas injection for can contract smoothly after the capsule pressure release and recover, can not cause the card hole, be convenient for promote smoothly. If the capsule water injection method is still adopted under the condition that the water level burial depth is too large, the capsule cannot be contracted and restored by the residual water head after the pressure of the capsule is relieved, so that the hole is blocked and the drill cannot be lifted. If the water level burial depth is not large, water can be injected, at the moment, after the pressure of the capsule is relieved, the contraction force of the capsule is larger than the residual water head, and the capsule can be contracted and restored.

And step 40, lifting the packer and the sensor 14 to the upper target aquifer 7 after the pressure of the capsule is released, and testing the water pressure of the target aquifer 7 in the same method, and repeating the steps until the water pressure of all the target aquifers 7 is tested.

And step 50, accurately calculating and designing a long sight hole structure histogram according to the drilling hydrological histogram and the water pressure value of each long sight aquifer.

And step 60, preparing the needed devices such as the central axis tube 10, the steel tube catcher, the expanded rubber or expanded capsule with the steel tube core, the inflating or water injecting high-pressure hose 12, the cable tube 13, various sensors 14, the grouting high-pressure hose 19, the snap ring between the inner cable tube 13 and the outer cable tube 13 of the central axis tube 10, the drilling monitoring terminal 16, the orifice locking cover and the like according to the size requirement of the histogram of the design structure of the long sight hole.

And step 70, combining various devices into the holes in sequence according to the size of the structural histogram of the long sight hole design. Ensuring that various devices such as the central shaft tube 10, the central shaft flower tube, the expansion rubber or the expansion capsule, various sensors 14 and the like have no error in sequence and accurate size; the high pressure hose 12 for air or water injection and the cable tube 13 are fixed to the central axis tube 10 or the inner or outer wall of the floral tube by tube collars, respectively, and are inserted into the holes simultaneously with the central axis tube 10. The special interface for connecting the water temperature and water pressure sensor cable with the main cable in the middle shaft tube is well sealed by high-strength epoxy resin; the water temperature and water pressure sensor 14 is positioned in the central part of the aquifer; the upper packers 11a are all located at the top end of the target aquifer bottom plate water barrier, and the lower packers 11b are located at the bottom end of the target aquifer top plate water barrier. Each sensor signal line is routed into the borehole monitoring terminal 16.

At step 80, a slurry or chemical slurry is injected into the packer and when the slurry pressure reaches a given pressure, typically greater than 2 times the maximum pressure in the aquifer, the pressure valve above the packer will open, expelling the remaining gas or liquid. And (5) continuing grouting until the slurry feeding amount is less than a certain given value, and maintaining the pressure for 8h to finish grouting. So that the grouted expanded capsule will be permanently fixed in the hole at a given pressure. In the case where the pressure difference between adjacent aquifers is less than the expansion pressure of the rubber, an expandable rubber may be used instead of the expansion bladder.

And step 90, when the expanded rubber or the expanded capsule theoretically achieves the sealing and water stopping effect, outputting the monitoring values of the sensors 14 in the aquifer at the drilling monitoring terminal 16, comparing the monitoring values with the values measured in the steps 30 and 40, and checking the actual sealing and water stopping effect of the expanded rubber or the expanded capsule. If the effect of a certain layer is not achieved, the expansion rubber needs to be further expanded or the injection pressure of the expansion capsule needs to be increased until the effect is achieved.

And step 100, starting the ground grouting pressure pump 20, injecting the grouting slurry into the grouting high-pressure hose 19, and synchronously lifting the grouting high-pressure hose 19 according to the grouting amount and the slurry rising speed of each hole section until the cement slurry overflows from the inside and the outside of the hole middle shaft tube 10.

And step 110, installing hole devices such as a drilling monitoring terminal 16 and the like, and jointly debugging the hole devices with the monitoring master station 18 and the monitoring slave stations 17 to realize autonomous communication.

And finally, multi-aquifer layered observation is carried out in one hydrological observation hole, and real-time transmission is carried out through the Internet of things. This technique and apparatus has the following advantages: the situation that only one aquifer can be observed through a single observation hole of the existing mine and few observation points are arranged is remarkably changed; the research degree of mine hydrogeology work is obviously improved, and the mine is assisted in disaster prevention and reduction; the working conditions of hydrogeologists workers are obviously improved, and the timeliness of data acquisition is improved; greatly reduces the construction cost of the mine hydrogeology long-looking net and the acquisition cost of the data containing water layers.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a hydrogeology long sight drilling layering monitoring devices, long sight drilling is located unconsolidated formation, basement rock stratum, the basement rock stratum is located the downside of unconsolidated formation, all include aquifer and water barrier in unconsolidated formation, the basement rock stratum, the aquifer is located two between the water barrier, its characterized in that includes:

the packer comprises a packing system, a packer and a pressure pump, wherein the packing system comprises a central shaft tube, a packer, a high-pressure hose and a pressure pump;

the central siphon stretches into in the long hole of observing, the packer establishes ties on the central siphon, just the packer with the aquifer corresponds the setting, the packer includes packer and lower packer, the aquifer is located rather than corresponding go up between packer and the lower packer, high pressure hose with the packer communicates in proper order, the force pump is located the long outside of observing the hole, just the force pump with high pressure hose links to each other.

2. The hydrogeological long term borehole stratification monitoring device of claim 1, further comprising:

the grouting system comprises a grouting pressure pump and a grouting high-pressure pipe;

the grouting high-pressure pipe is placed in the central shaft pipe in a retractable manner, the grouting pressure pump is located on the outer side of the long sight drilling hole, and the grouting pressure pump is connected with the grouting high-pressure pipe.

3. The hydrogeological long term borehole stratification monitoring device of claim 1, further comprising:

the system comprises a data acquisition system, a monitoring system and a control system, wherein the data acquisition system comprises a sensor, a cable tube and a drilling monitoring terminal;

the sensor is arranged in the position, corresponding to the aquifer, in the long-sight drilling hole, the drilling hole monitoring terminal is positioned at the top end of the long-sight drilling hole, and the sensor is connected with the drilling hole monitoring terminal through the cable tube.

4. A hydrogeological long term borehole stratification monitoring device as claimed in claim 3, further comprising:

the monitoring system comprises a monitoring substation and a monitoring main station, wherein the monitoring substation and the monitoring main station are in signal connection with the drilling monitoring terminal through wireless signal transmission.

5. The hydrogeological long term borehole stratification monitoring device of claim 1,

the packer is made of a hollow steel tube shaft core and a water-swelling rubber or steel bar swelling capsule.

6. The hydrogeological long-term borehole stratification monitoring device of claim 1,

the central shaft tube is a hollow steel tube or a high-strength PVC tube.

7. The hydrogeological long term borehole stratification monitoring device of claim 6,

the central axis pipe is provided with perforated pipes at intervals, and the perforated pipes are provided with round holes.

8. A hydrogeological long term borehole stratification monitoring device as claimed in claim 3,

the sensor comprises a water pressure sensor, a water temperature sensor and a probe.

9. A hydrogeological long term borehole stratification monitoring device as claimed in claim 3,

the cable pipe is formed by combining a plurality of wires or optical fibers and wrapping a waterproof and anti-corrosion protective layer on the outer side.

10. A hydrogeological long term borehole stratification monitoring device according to any one of claims 1-9, further comprising:

a seamless casing at a unconsolidated portion of the apparent borehole, the seamless casing at a bedrock interface between the unconsolidated portion and the bedrock formation.