Underground water level observation and recharge integrated system

Abstract

The utility model relates to an underground water level observation and recharge integrated system which comprises a water level monitoring and recharge device, a well casing, automatic water delivery equipment, a water pipe, automatic monitoring and control equipment and static pressure equipment, the water level monitoring and recharge device is arranged at the bottom of the well casing, and the well casing is connected with the automatic water delivery equipment through the water pipe. The well casing is pressed into a soil layer through the static pressure equipment, and the automatic monitoring and control equipment is connected with and controls the automatic water conveying equipment according to data of the water level monitoring and recharging device. The utility model has the advantages that: 1) the efficiency is greatly improved, the requirements on construction machinery are also greatly reduced, and the cyclic utilization is realized; disturbance to undisturbed soil is reduced to a great extent, the water level sensing element can be effectively prevented from being disturbed by soil particles, the underground water level testing precision is effectively improved, the water level of a set soil layer is continuously kept stable, the whole implementation process is efficient and convenient, operability is high, and the expected effect is quite remarkable.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground water level control and geotechnical engineering test technical field, concretely relates to a kind of underground water level observation and integrated system of recharge. BACKGROUND

[0002] When underground water level is higher, foundation pit is usually needed to reduce underground water level in excavation process, if thicker confined aquifer is involved, containment structure cannot cut off confined aquifer, and pit dewatering often leads to the water level in the soil layer outside pit to drop significantly, and then possibly cause uneven settlement of adjacent sensitive building (structure) structure, and seriously possibly endanger structure safety. In order to protect the safety of surrounding environment of foundation pit, pit dewatering is usually needed to be combined with the decline of water level outside pit to take the measures of groundwater recharge outside pit. However, the water level observation and recharge process outside pit still has many drawbacks.

[0003] Underground water level observation usually adopts drilling to bury water level observation pipe first, and then measures the change of water level in measuring pipe through water gauge or water level gauge in monitoring process. However, drilling will cause serious damage to the structure of rock-soil body within a certain range around, lead to the change of permeability of hole wall, and the quality of backfilling is difficult to control, so that the quality of water level observation data is difficult to grasp. Groundwater recharge is also generally constructed large-diameter recharge well first, which has long construction time, complex process, high cost, and the abandoned recharge well can also become underground obstacle, cause hindrance to subsequent land development and utilization, and also cause environmental problems such as water quality and soil pollution. In addition, whether it is water level observation hole or recharge well, it belongs to one-time consumables and cannot be recycled, which does not conform to the concept of low carbon, environmental protection and economy. SUMMARY

[0004] The utility model aims at the deficiency of prior art, and provides an underground water level observation and recharge integrated system, which is composed of water level monitoring and recharge device, segmented well pipe, static pressure equipment, automatic monitoring equipment and automatic water conveying equipment, the water level monitoring and recharge device is connected to the segmented small-diameter well pipe by the static pressure equipment and pressed into the soil, to quickly form well structure, simplify the traditional well construction process and time, reduce disturbance to undisturbed soil, and avoid problems such as long construction period, difficult control of construction quality and difficult treatment of slurry generated in construction process caused by traditional drilling method. After use, the segmented well pipe, water level monitoring and recharge device can be pulled out and recycled by the static pressure equipment, to improve efficiency, reduce cost and be low in carbon and environmental protection.

[0005] The utility model is achieved by the following technical solutions:

[0006] The application relates to an integrated system for underground water level observation and recharge, characterized in that the system comprises a water level monitoring and recharge device, a well pipe, automatic water conveying equipment, a water pipe, automatic monitoring and control equipment and static pressure equipment; the water level monitoring and recharge device is arranged at the bottom of the well pipe; the well pipe is connected with the automatic water conveying equipment through the water pipe; the well pipe is pressed into the soil layer through the static pressure equipment; and the automatic monitoring and control equipment controls the automatic water conveying equipment according to the data of the water level monitoring and recharge device.

[0007] The water level monitoring and recharge device comprises a conical drill bit, a water pressure sensing structure, a water-permeable steel pipe, a water-permeable structure and a granular body; the conical drill bit is arranged at the bottom; the water pressure sensing structure is arranged above the conical drill bit; the water-permeable steel pipe is used for allowing underground water to enter and be sensed by the water pressure sensing structure; the water-permeable structure is used for preventing the water pressure sensing structure from directly contacting the soil body; and the granular body is used for preventing the water-permeable structure from being blocked.

[0008] The upper portion of the water level monitoring and recharge device is provided with a threaded joint; and the water level monitoring and recharge device is detachably connected and fixed with the well pipe through the threaded joint.

[0009] The inner side of the water-permeable steel pipe is provided with a plurality of inner supporting steel rings in the length direction.

[0010] The water pressure sensing structure is provided with a sealing device at the position, so as to prevent underground water from entering the inside of the water pressure sensing structure.

[0011] The water pressure sensing structure is connected with the automatic monitoring and control equipment through a water level observation data cable.

[0012] The application relates to an application method of the integrated system for underground water level observation and recharge, characterized in that the application method comprises the following steps.

[0013] The water level monitoring and recharge device and the well pipe are arranged through the static pressure equipment; the well pipe is connected with the automatic water conveying equipment through the water pipe;

[0014] The automatic monitoring and control equipment is used for collecting water level data of the water level monitoring and recharge device in real time, determining an initial stable water level of the soil layer, and setting an alarm value of soil layer water level drop in the automatic monitoring and control equipment according to requirements.

[0015] When the whole foundation pit is under construction, the automatic monitoring and control equipment sends a water recharge instruction to the automatic water delivery equipment to start groundwater recharge when the soil layer water level monitored by the water level monitoring and recharge device drops to the pre-set warning value, and the automatic monitoring and control equipment controls the automatic water delivery equipment to temporarily stop water recharge when the soil layer water level rises to the initial water level, so as to continuously ensure the stability of the soil layer water level.

[0016] The water level monitoring and recharge device is sequentially spliced with multiple well pipes, and the static pressure device is used to inject and press the well pipes into the soil layer.

[0017] After the foundation pit construction is completed and the water level of the stratum is restored and stabilized, the test is ended, and the well pipe and the water level monitoring and recharge device are pulled out and recycled by using the static pressure equipment.

[0018] The utility model has the advantages of:

[0019] 1) The well pipe and the water level monitoring and recharge device are spliced and recycled by using the static pressure equipment, which greatly improves the efficiency and greatly reduces the requirements for construction machinery compared with the traditional drilling and well forming mode, and realizes recycling, thereby greatly reducing the test cost and avoiding leaving underground obstacles for the future compared with the traditional abandoned well mode.

[0020] 2) The static pressure embedding mode greatly reduces the disturbance to the original soil, and the specially designed water level monitoring and recharge device structure can effectively prevent the water level sensing element from being disturbed by soil particles, thereby effectively improving the test accuracy of the underground water level.

[0021] 3) The integrated system of underground water level observation and recharge realizes the continuous stability of the specified soil layer water level through automatic control in the whole process, and the whole implementation process is efficient, convenient and operable, and the expected effect is very significant. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the system structure device of the utility model;

[0023] Figure 2 It is a schematic diagram of the water level monitoring and recharge equipment in the system of the utility model;

[0024] Figure 3 It is a schematic diagram of step one of the test process of the system structure device of the utility model;

[0025] Figure 4 It is a schematic diagram of step two of the test process of the system structure device of the utility model;

[0026] Figure 5 It is a schematic diagram of step three of the test process of the system structure device of the utility model;

[0027] Figure 6 Schematic diagram of Step 4 in the testing process of the system structure device of the present utility model;

[0028] Figure 7 Schematic diagram of Step 5 in the testing process of the system structure device of the present utility model;

[0029] Figure 8 Schematic diagram of the use of the present utility model. Specific implementation mode

[0030] The features of the present utility model and other related features are further described in detail below with reference to the accompanying drawings through embodiments for the understanding of those skilled in the same industry:

[0031] As Figures 1-8 shown, each label in the figure respectively represents: water level monitoring and recharge device 1, well pipe 2, automatic water conveyance equipment 3, water pipe 4, automatic monitoring and control equipment 5, static pressure equipment 6, upper soil layer of the test soil layer 7, water level monitoring and recharge soil layer 8, adjacent underground pipeline 9, adjacent building 10, adjacent operating rail transit 11, adjacent construction foundation pit 12, drill bit 101, water pressure sensing structure 102, permeable steel pipe 103, permeable structure 104, granular body 105, internal support steel ring 106, partition board 107, threaded joint 108, data cable protection device 109, sealing device 110, data cable 111.

[0032] Embodiment: As Figures 1 to 5 shown, the integrated underground water level observation and recharge system in this embodiment includes a water level monitoring and recharge device 1, a well pipe 2, an automatic water conveyance equipment 3, a water pipe 4, an automatic monitoring and control equipment 5, and a static pressure equipment 6.

[0033] Among them, the water level monitoring and recharge device 1 includes a drill bit 101, a water pressure sensing structure 102, a permeable steel pipe 103, a permeable structure 104, a granular body 105, an internal support steel ring 106, a partition board 107, a threaded joint 108, a data cable protection device 109, a sealing device 110, and a data cable 111.

[0034] The drill bit 101 is a conical drill bit with a certain diameter and a solid steel structure. Its main function is to reduce the resistance suffered by the water level monitoring and recharge device 1 as the pressing end when it is pressed into the soil.

[0035] The water pressure sensing structure 102 realizes the test of the water level by sensing the water pressure at the position of the permeable structure. [[ID=​​​​The main function of the water permeable structure 104 is to prevent the water pressure sensing structure from being in direct contact with the soil, and to accurately transmit the water pressure to the water pressure sensing structure 102.

[0038] The granular body 105, including but not limited to medium coarse sand, mainly functions to prevent the external soil from directly entering the inside of the device and adhering to the water permeable structure 104, causing the water permeable structure 104 to be blocked and affecting the transmission of water pressure. In this embodiment, as shown in FIG. 1, multiple layers of granular bodies 104 can be arranged in the water permeable steel pipe 103 to improve the anti-blocking effect. Figure 2

[0039] The main function of the inner support steel ring 106 is to improve the overall stiffness of the water permeable steel pipe 103, preventing damage caused by excessive pressure during pressing.

[0040] The partition plate 107 is arranged inside the water permeable steel pipe 103. The partition plate 106 above is the recharge section of the water permeable steel pipe 103, and the partition plate 107 below is the water level observation water permeable and filtering section.

[0041] The main function of the threaded joint 108 is to mechanically connect the upper well pipe.

[0042] The protection device 109 is used to prevent the cable from being damaged by soil pressure during burial.

[0043] The sealing device 110 prevents groundwater from entering the inside of the water pressure sensing structure.

[0044] The water level observation data cable 111 has one end connected to the outer wall of the pipe through a buckle, connecting the ground automatic monitoring and control equipment 5, and the other end connected to the inside of the water pressure sensing structure 102. During water level observation, the water pressure sensing structure 102 transmits water level data to the monitoring system through the cable according to the instruction of the automatic monitoring and control equipment 5.

[0045] The length and diameter of the well pipe 2 are customized according to engineering needs and are matched with the water level monitoring and recharge device 1. The well pipe 2 is made of metal material, and the inner and outer threads are arranged at both ends. The well pipe 2 and the well pipe 2, and the well pipe 2 and the water level monitoring and recharge device 1 are mechanically connected.

[0046] The automatic water conveying equipment 3 has one end connected to the external municipal water system through a constant pressure pump, and the other end connected to the well pipe 2 through the water pipe 4. Automatic recharge is performed according to the instruction of the automatic monitoring equipment.

[0047] One end of the water pipe 4 is connected to the automatic water conveying equipment 3, and the other end is connected to the well pipe 2 located on the ground.

[0048] ​The main functions of the automatic monitoring and control device 5 include collecting and receiving water level observation data of the water level monitoring and recharge device 1, sending a recharge instruction to the automatic water delivery device 3 when the water level drops below the warning value, and sending a stop recharge instruction to the automatic water delivery device 3 when the water level rises to the initial water level.

[0049] The static pressure device 6 can press the water level monitoring and recharge device 1 and the well pipe 2 into the designated soil layer section by section, and can pull out the water level monitoring and recharge device 1 and the well pipe 2 section by section after the construction is completed.

[0050] The water level monitoring and recharge soil layer 8 is overlaid by the upper soil layer 7 of the test soil layer.

[0051] As shown in the embodiment, the actual construction includes the following processes: Figure 8

[0052] (1) The number and size of the well pipe 2 are determined according to the test requirements and the soil layer depth, and the cable length of the water level monitoring and recharge device 1 is determined based on the same.

[0053] (2) First, the static pressure device 6 is installed at the specified position above the test soil layer 8, then the water level monitoring and recharge device 1 is connected to the multiple well pipes 2 section by section through threaded joints, and the static pressure device 6 is used to press them into the upper soil layer 7 of the test soil layer and the water level monitoring and recharge soil layer 8 step by step;

[0054] (3) After the water level monitoring and recharge device 1 is sent to the specified depth of the water level monitoring and recharge soil layer 8, the data cable 111 is connected to the automatic monitoring and control device 5, and the static pressure device 6 can be removed at the same time;

[0055] (4) One end of the water pipe 4 is connected to the automatic water delivery device 3, and the other end is connected to the pipe opening of the well pipe 2 located on the ground, and it is ensured that the connection position is well sealed.

[0056] (5) Before the foundation pit 12 is constructed, the automatic monitoring and control device 5 and the automatic water delivery device 3 are turned on to check the integrity of the equipment. The water level data of the water level monitoring and recharge device 1 is collected in real time through the automatic monitoring and control device 5 to determine the initial stable water level of the water level monitoring and recharge soil layer 8, and the warning value of the water level of the water level monitoring and recharge soil layer 8 is set in the automatic monitoring and control device 5 according to the requirements.

[0057] ​(6) When the foundation pit 12 starts construction, the automatic monitoring and control equipment 5 judges the water level monitoring and the water level of the recharge soil layer 8 to drop to the pre-set warning value through the monitored water level monitoring and recharge soil layer 8 water level data, and sends the recharge water instruction to the automatic water delivery equipment 3 to start the groundwater recharge. After the water level monitoring and the water level of the recharge soil layer 8 rises to the initial water level, the automatic monitoring and control equipment 5 sends the stop groundwater recharge instruction to the automatic water delivery equipment 3, and the automatic water delivery equipment 3 temporarily stops water recharge after receiving the instruction.

[0058] (7) During the entire construction process of the foundation pit 12, the automatic monitoring and control equipment 5 and the automatic water delivery equipment 3 cooperate to continuously ensure the stability of the water level monitoring and the water level of the recharge soil layer 8.

[0059] (8) After the completion of the construction of the foundation pit 12 and the recovery of the groundwater level of the water level monitoring and the recharge soil layer 8, the test is ended, the static pressure equipment 6 is installed at the same specified position to pull out and recycle the connecting well pipe 2 and the water level monitoring and recharge device 1, and the calibration and quality inspection are carried out, which can be reused in the future.

[0060] Although the above embodiments have been described in detail with reference to the accompanying drawings for the purpose of the concept and embodiments of the present application, those skilled in the art can recognize that various improvements and changes can be made to the present application without departing from the scope defined by the claims, and therefore, detailed description is not given here.

Claims

1. An integrated system for groundwater level monitoring and recharge, characterized in that: The water level monitoring and recharge device, the well pipe, the automatic water delivery device, the water pipe, the automatic monitoring and control device and the static pressure device are connected, wherein the water level monitoring and recharge device is arranged at the bottom of the well pipe, the well pipe is connected with the automatic water delivery device through the water pipe, the well pipe is pressed into the soil layer through the static pressure device, and the automatic monitoring and control device controls the automatic water delivery device according to the data connection of the water level monitoring and recharge device.

2. The integrated groundwater level observation and recharge system according to claim 1, characterized in that: The water level monitoring and recharge device comprises a cone drill bit, a water pressure sensing structure, a water permeable steel pipe, a water permeable structure and a particle body, wherein the cone drill bit is arranged at the bottom, the water pressure sensing structure is arranged above the cone drill bit, the water permeable steel pipe is used for allowing underground water to enter and is sensed by the water pressure sensing structure, the water permeable structure is used for preventing the water pressure sensing structure from directly contacting the soil body, and the particle body is used for preventing the water permeable structure from being blocked.

3. The integrated groundwater level observation and recharge system according to claim 2, characterized in that: The upper part of the water level monitoring and recharge device is provided with a threaded joint, and the water level monitoring and recharge device is detachably connected and fixed with the well pipe through the threaded joint.

4. The integrated groundwater level observation and recharge system according to claim 2, characterized in that: The inner side of the water permeable steel pipe is provided with a plurality of inner support steel rings in the length direction.

5. The integrated groundwater level observation and recharge system according to claim 2, characterized in that: The water pressure sensing structure is provided with a sealing device to prevent underground water from entering the inside of the water pressure sensing structure.

6. The integrated groundwater level observation and recharge system according to claim 2, characterized in that: The water pressure sensing structure is connected with the automatic monitoring and control device through a water level observation data cable.

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