Underground water level detector while drilling for dynamic sounding equipment

Abstract

The invention relates to the technical field of geotechnical engineering investigation, and particularly discloses a while-drilling underground water level detector for dynamic sounding equipment, which comprises a probe, a probe rod, a hammer seat, a center penetrating hammer and a guide rod, and the probe is connected with the lower end of the probe rod; the hammer seat and the piercing hammer are arranged on the probe rod, and the hammer seat is located below the piercing hammer; the lower end of the guide rod is communicated with the upper end of the probe rod; a water level sensing section is arranged at the lower end of the probe rod, a one-way water and air inlet hole communicated with the atmosphere is formed in the side wall of the water level sensing section, and a quicklime box is arranged in the water level sensing section and used for containing quicklime; a signal lamp is arranged at the upper end of the guide rod, a sliding block is arranged in the guide rod and located below the signal lamp, the side wall of the sliding block makes contact with the inner wall of the guide rod, and a switch of the signal lamp faces the sliding block. The problem that in the prior art, the underground water level cannot be accurately measured in a dynamic sounding hole is solved; measurement of the underground water level in the rotary drill hole is affected by drilling fluid, and measurement data is inaccurate.

Description

Technical Field

[0001] The present application relates to the technical field of geotechnical engineering investigation, and in particular to a groundwater level detector while drilling for a dynamic probing device. Background Art

[0002] In the exploration of pebble formations, dynamic penetration is used to quickly determine the density and mechanical properties of pebble formations. It has been widely used due to its light weight and intuitive inspection methods. After the dynamic penetration drilling, the drill rod needs to be hammered and lifted. During the lifting process, the formation collapses seriously, and the groundwater level cannot be accurately measured in the dynamic penetration hole; and the groundwater level measurement in the rotary drilling hole is affected by the drilling fluid, and the measurement data is inaccurate. The measurement of groundwater level has a great impact on the drainage of the later foundation pit construction, the anti-floating and waterproofing of the building. Summary of the invention

[0003] The purpose of the present application is to provide a groundwater level detector for dynamic probing equipment while drilling, so as to solve the problem that the groundwater level cannot be accurately measured in the dynamic probing hole in the prior art; and the groundwater level measured in the rotary drilling hole is affected by the drilling fluid, resulting in inaccurate measurement data.

[0004] To achieve the above-mentioned purpose, the embodiment of the present application provides a groundwater level detector for dynamic penetration equipment while drilling, including: a probe, a probe rod, a hammer seat, a core hammer, and a guide rod, wherein:

[0005] The probe is connected to the lower end of the probe rod;

[0006] The hammer seat and the core-piercing hammer are arranged on the probe rod, and the hammer seat is located below the core-piercing hammer;

[0007] The lower end of the guide rod is connected to the upper end of the probe rod;

[0008] A water level sensing section is provided at the lower end of the probe rod, a one-way water inlet and air inlet hole communicating with the atmosphere is provided on the side wall of the water level sensing section, and a quicklime box is provided in the water level sensing section, and the quicklime box is used to place quicklime;

[0009] A signal light is arranged at the upper end of the guide rod, a slider is arranged inside the guide rod, the slider is located below the signal light, a side wall of the slider contacts the inner wall of the guide rod, and the switch of the signal light faces the slider.

[0010] Optionally, the side wall of the quicklime box is provided with an opening and closing device, which is located on the inner side of the one-way water inlet and air inlet hole, and includes a first spring and a top plate, one end of the first spring is connected to the side wall of the quicklime box, the other end of the first spring is connected to one side of the top plate, and the other side of the top plate faces the one-way water inlet and air inlet hole, and the top plate is used to close the one-way water inlet and air inlet hole from the inside.

[0011] Optionally, the opening and closing device further comprises a base, one end of the base is connected to the side wall of the quicklime box, the other end of the base is provided with a groove, the first spring is arranged in the groove, and the top plate is located outside the groove.

[0012] Optionally, a through hole is provided at the upper end of the quicklime box.

[0013] Optionally, a second spring is provided above the slider, the lower end of the second spring is connected to the slider, and the upper end of the second spring is connected to the signal light or the upper end of the guide rod.

[0014] Optionally, the switch of the signal light is a push button switch, and the switch extends into the guide rod.

[0015] Optionally, there are multiple one-way water and air inlet holes.

[0016] The embodiments of the present application have the following advantages:

[0017] Compared with the prior art, the above technical solution provides a groundwater level detector for dynamic probing equipment. During the hammer drilling process, if the drill encounters groundwater, the groundwater will break the top plate and enter the quicklime box in the probe rod through the one-way water inlet and air inlet hole of the water level sensing section at the lower end of the probe rod. It will generate water vapor by contacting the quicklime in the quicklime box. The water vapor will rise to the slider at the top of the guide rod through the inner hole of the probe rod, push the slider up, trigger the signal light switch, and the signal light will flash. At this time, the on-site recorder will record the depth of the groundwater level according to the length of the underground drill rod. This solves the problem that the groundwater level cannot be accurately measured in the dynamic probing hole in the prior art; and the groundwater level measurement in the rotary drilling hole is affected by the drilling fluid, resulting in inaccurate measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 A schematic structural diagram of a groundwater level detector while drilling for a dynamic penetration device provided in at least one embodiment of the present application;

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of position A in the middle;

[0021] Figure 3 for Figure 1 A magnified schematic diagram of position B in the middle.

[0022] Description of reference numerals:

[0023] 1. Guide rod, 2. Core hammer, 3. Hammer seat, 4. Probe rod, 5. Probe, 6. One-way water and air inlet hole, 7. Quicklime box, 8. Water level sensing section, 9. Slider, 10. Switch, 11. Signal light. DETAILED DESCRIPTION

[0024] The following is a description of the implementation of the present application by specific specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0025] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0027] The present application provides a groundwater level detector for dynamic penetration equipment while drilling, referring to Figures 1 to 3 ,include:

[0028] Probe 5, probe rod 4, hammer seat 3, core hammer 2, guide rod 1, wherein:

[0029] The probe 5 is connected to the lower end of the probe rod 4;

[0030] The hammer seat 3 and the core piercing hammer 2 are arranged on the probe rod 4, and the hammer seat 3 is located below the core piercing hammer 2;

[0031] The lower end of the guide rod 1 is connected to the upper end of the probe rod 4;

[0032] A water level sensing section 8 is provided at the lower end of the probe rod 4, and a one-way water inlet and air inlet hole 6 connected to the atmosphere is provided on the side wall of the water level sensing section 8. A quicklime box 7 is provided in the water level sensing section 8, and the quicklime box 7 is used to place quicklime;

[0033] A signal light 11 is disposed at the upper end of the guide rod 1 , a slider 9 is disposed inside the guide rod 1 , the slider 9 is located below the signal light 11 , the side wall of the slider 9 contacts the inner wall of the guide rod 1 , and the switch 10 of the signal light 11 faces the slider 9 .

[0034] In some embodiments, the side wall of the quicklime box 7 is provided with an opening and closing device, which is located on the inner side of the one-way water inlet and air inlet hole 6, and includes a first spring 12 and a top plate, one end of the first spring 12 is connected to the side wall of the quicklime box 7, and the other end of the first spring 12 is connected to one side of the top plate, and the other side of the top plate faces the one-way water inlet and air inlet hole 6, and the top plate is used to close the one-way water inlet and air inlet hole 6 from the inside.

[0035] In some embodiments, the opening and closing device further includes a base, one end of which is connected to the side wall of the quicklime box 7, and the other end of the base is provided with a groove, the first spring 12 is arranged in the groove, and the top plate is located outside the groove.

[0036] Specifically, the opening and closing device includes a first spring, a top plate and an (optional) base. Under the action of the first spring, the top plate fits tightly against the inner side of the one-way water inlet and air inlet hole to form a seal. When the groundwater pressure is large enough, the top plate is pushed open to allow water to enter the quicklime box. The design of the spring and the top plate ensures the automatic opening and closing function of the one-way water inlet and air inlet hole, while preventing the blockage of drill cuttings during the drilling process.

[0037] In some embodiments, a through hole is provided at the upper end of the quicklime box 7.

[0038] Specifically, the groundwater entering from the one-way water inlet and air inlet hole 6 can enter from the through hole at the upper end of the quicklime box 7, thereby generating water vapor by contacting with the lime, and the water vapor also emerges from the through hole. In some embodiments, the through hole can be arranged at the top of the quicklime box 7 or the upper part of the side wall, both of which belong to the upper end of the quicklime box 7. The through hole arranged at the upper end of the quicklime box 7 can prevent the quicklime from spilling out of the quicklime box 7.

[0039] In some embodiments, a second spring 13 is provided above the slider 9 , the lower end of the second spring 13 is connected to the slider 9 , and the upper end of the second spring 13 is connected to the signal light 11 or the upper end of the guide rod 1 .

[0040] Specifically, the slider is located inside the guide rod and is connected to the signal light or the upper end of the guide rod through a second spring. When the water vapor rises to the position of the slider, its pressure pushes the slider up, thereby triggering the signal light switch. The second spring is used to reset the slider to ensure the continuity and accuracy of the detection process.

[0041] Specifically, the signal light is installed on the top of the guide rod for easy observation by on-site personnel. When the slider is pushed, the signal light switch is triggered and a flashing signal is emitted, indicating that the groundwater level has been detected. The design of the signal light must take into account its visual distance and durability to ensure stable operation under various environmental conditions.

[0042] In some embodiments, the switch 10 of the signal light 11 is a push button switch 10 , and the switch 10 extends into the guide rod 1 .

[0043] In some embodiments, the one-way water and air inlet holes 6 are provided in plurality.

[0044] Specifically, one-way water inlet and air inlet holes are designed on the side wall of the water level sensing section at the lower end of the probe rod. These one-way water inlet and air inlet holes only allow groundwater to enter the probe rod in one direction. The number and distribution of one-way water inlet and air inlet holes are determined according to the probe rod diameter and detection sensitivity requirements. Multiple one-way water inlet and air inlet holes can improve the detection accuracy and response speed.

[0045] Working principle:

[0046] The embodiment of the present application provides a drilling groundwater level detector for a dynamic probing device. During the hammer drilling process, if groundwater is encountered, the groundwater will break through the top plate and enter the quicklime box 7 in the probe rod 4 through the one-way water inlet and air inlet hole 6 of the water level sensing section 8 at the lower end of the probe rod 4. The quicklime in the quicklime box 7 is contacted to generate heat and water vapor. The water vapor rises through the inner hole of the probe rod 4 to the slider 9 at the top of the guide rod 1, pushing the slider 9 up and triggering the signal light 11 switch 10. The signal light 11 flashes. At this time, the on-site recorder records the groundwater level depth according to the length of the underground drill rod.

[0047] Note that, unless otherwise directly stated, all features disclosed in this specification (including any attached claims, abstracts and drawings) may be replaced by alternative features for achieving the same, equivalent or similar purposes. Therefore, unless otherwise explicitly stated, each feature disclosed is only an example of a group of equivalent or similar features. Where used, further, preferably, further and more preferably are simple beginnings for elaborating another embodiment based on the aforementioned embodiment, and the content of the further, preferably, further or more preferably followed by the combination with the aforementioned embodiment constitutes a complete construction of another embodiment. Several further, preferably, further or more preferably settings following the same embodiment can be arbitrarily combined to form another embodiment.

[0048] In the implementation of functions and steps, the corresponding functions and steps in various embodiments may also occur in a different order than shown. For example, two consecutive functions and steps may actually be performed or implemented substantially in parallel, and they may sometimes be performed or implemented in the opposite order, depending on the functions involved.

[0049] Although the present application has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made to the present application. Therefore, these modifications or improvements made without departing from the spirit of the present application all fall within the scope of protection claimed in the present application.

Claims

1. A groundwater level detector while drilling for a dynamic penetration device, characterized in that: include: Probe, probe rod, hammer seat, core hammer, guide rod, among which, The probe is connected to the lower end of the probe rod; The hammer seat and the core-piercing hammer are arranged on the probe rod, and the hammer seat is located below the core-piercing hammer; The lower end of the guide rod is connected to the upper end of the probe rod; A water level sensing section is provided at the lower end of the probe rod, a one-way water inlet and air inlet hole communicating with the atmosphere is provided on the side wall of the water level sensing section, and a quicklime box is provided in the water level sensing section, and the quicklime box is used to place quicklime; A signal light is arranged at the upper end of the guide rod, a slider is arranged inside the guide rod, the slider is located below the signal light, a side wall of the slider contacts the inner wall of the guide rod, and the switch of the signal light faces the slider.

2. The underground water level detector while drilling for dynamic penetration equipment according to claim 1, characterized in that: The side wall of the quicklime box is provided with an opening and closing device, which is located on the inner side of the one-way water inlet and air inlet hole, and includes a first spring and a top plate, one end of the first spring is connected to the side wall of the quicklime box, the other end of the first spring is connected to one side of the top plate, and the other side of the top plate faces the one-way water inlet and air inlet hole, and the top plate is used to close the one-way water inlet and air inlet hole from the inside.

3. The underground water level detector while drilling for dynamic penetration equipment according to claim 2, characterized in that: The opening and closing device also includes a base, one end of which is connected to the side wall of the quicklime box, and the other end of the base is provided with a groove, the first spring is arranged in the groove, and the top plate is located outside the groove.

4. The underground water level detector while drilling for dynamic penetration equipment according to claim 1, characterized in that: The upper end of the quicklime box is provided with a through hole.

5. The underground water level detector while drilling for dynamic penetration equipment according to claim 1, characterized in that: A second spring is arranged above the sliding block, the lower end of the second spring is connected to the sliding block, and the upper end of the second spring is connected to the signal lamp or the upper end of the guide rod.

6. The underground water level detector while drilling for dynamic penetration equipment according to claim 1, characterized in that: The switch of the signal light is a key switch, and the switch extends into the guide rod.

7. The underground water level detector while drilling for dynamic penetration equipment according to claim 1, characterized in that: There are multiple one-way water and air inlet holes.

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