Device for reserving bottom settlement space for layered settlement monitoring equipment

Abstract

The utility model discloses a device for reserving a bottom settlement space for layered settlement monitoring equipment, and relates to the technical field of settlement monitoring. Comprising an outer casing pipe arranged in a drill hole, a guide pipe is arranged in the outer casing pipe, the part, extending out of the top face of the outer casing pipe, of the guide pipe is connected with the outer casing pipe in a sealed mode through a connecting piece, and a plurality of flower holes for underground water to enter the guide pipe are formed in the outer wall, extending into the outer casing pipe, of the guide pipe. According to the utility model, the guide tube is arranged in the outer sleeve, so that the guide tube can move in the outer sleeve when the guide tube is subjected to the action of an upper load, thereby effectively avoiding the damage of the guide tube caused by extrusion under the action of the upper load; and the layered settlement monitoring equipment can normally run on the guide pipe for a long time.

Description

Technical Field

[0001] This utility model relates to the field of settlement monitoring technology, and in particular to a device for reserving bottom settlement space in a stratified settlement monitoring equipment. Background Technology

[0002] Currently, stratified settlement monitoring equipment, such as magnetostrictive settling analyzers, consists of a settlement magnetic ring, a guide tube, and an electronic chamber. The settlement magnetic ring is fitted onto the outside of the guide tube and moves downward along the guide tube as it settles with the ground. The guide tube is typically made of plastic materials such as ABS or PE. However, existing settlement monitoring equipment installations place the guide tube directly at the bottom of the pre-drilled hole, causing it to directly bear the pressure of the upper embankment load. As the upper load pressure gradually increases, the guide tube will be squeezed and deformed, preventing the settlement magnetic ring from moving smoothly. More seriously, this can damage the guide tube and the settlement monitoring equipment, rendering the equipment completely ineffective. Therefore, there is an urgent need for a device that reserves bottom settlement space in stratified settlement monitoring equipment. This device can effectively prevent damage to the guide tube caused by compression under upper loads and enable the stratified settlement monitoring equipment to operate normally and for a long time on the guide tube. Utility Model Content

[0003] The purpose of this invention is to provide a device for reserving bottom settlement space in a stratified settlement monitoring equipment, so as to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides a device for reserving bottom settlement space in a stratified settlement monitoring equipment, including an outer sleeve installed in a borehole, a guide pipe installed inside the outer sleeve, the portion of the guide pipe extending out of the top surface of the outer sleeve being sealed to the outer sleeve through a connector, and a plurality of perforations for groundwater to enter the guide pipe on the outer wall of the guide pipe extending into the outer sleeve.

[0005] Preferably, the connector includes several layers of geotextile covering the connection between the outer sleeve and the guide tube, and several binding straps are wrapped around the outermost layer of geotextile.

[0006] Preferably, the total length of the outer casing is not less than the sum of the total formation subsidence plus the length of the guide pipe extending into the outer casing.

[0007] Preferably, the inner diameter of the outer sleeve is adapted to the outer diameter of the guide tube.

[0008] Preferably, the outer wall of the guide tube is slidably connected to the inner wall of the outer sleeve.

[0009] Preferably, a space is left between the end of the guide tube that extends into the outer sleeve and the bottom of the outer sleeve for the guide tube to settle.

[0010] Preferably, the perforations are evenly spaced and staggered on the outer wall of the guide tube extending into the outer sleeve.

[0011] The present invention discloses the following technical effects:

[0012] This invention, by placing the guide pipe inside the outer sleeve, allows the guide pipe to move within the outer sleeve when subjected to an upper load. This not only effectively avoids damage caused by compression of the guide pipe under an upper load, but also enables the stratified settlement monitoring equipment to operate normally and for a long period of time on the guide pipe. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0015] Figure 2 This is a front view of the structure of the present invention when the guide tube is inserted into the outer sleeve;

[0016] Figure 3 This is a front view structural diagram of the guide tube of this utility model;

[0017] Among them, 1. Drilling; 2. Outer casing; 3. Guide pipe; 4. Hole; 5. Geotextile; 6. Binding strap. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] Reference Figures 1-3 This utility model discloses a device for reserving bottom settlement space in a stratified settlement monitoring equipment, including an outer sleeve 2 set in a borehole 1, a guide pipe 3 set in the outer sleeve 2, the part of the guide pipe 3 extending out of the top surface of the outer sleeve 2 being sealed to the outer sleeve 2 through a connector, and a number of perforated holes 4 for groundwater to enter the guide pipe 3 on the outer wall of the guide pipe 3 extending into the outer sleeve 2.

[0022] The outer sleeve 2 is made of stainless steel or similar materials, and the guide tube 3 is made of ABS or PE.

[0023] This invention, by placing the guide pipe 3 inside the outer sleeve 2, allows the guide pipe 3 to move within the outer sleeve 2 when subjected to an upper load. This not only effectively avoids damage caused by the compression of the guide pipe 3 under the upper load, but also enables the stratified settlement monitoring equipment to operate normally and for a long period of time on the guide pipe 3.

[0024] The binding strap 6 is made of steel wire or binding tape.

[0025] The design is further optimized so that the connector includes several layers of geotextile 5 covering the connection between the outer casing 2 and the guide pipe 3, with several binding straps 6 wrapped around the outermost layer of geotextile 5. By wrapping several layers of geotextile 5 around the connection between the outer casing 2 and the guide pipe 3, and fixing the geotextile 5 to the connection between the outer casing 2 and the guide pipe 3 with several binding straps 6, the outer casing 2 will not fall off, and can be stably installed into the borehole 1.

[0026] Meanwhile, by wrapping the connection between the outer sleeve 2 and the guide pipe 3 with geotextile 5, the mud can be prevented from entering the outer sleeve 2 from the connection between the outer sleeve 2 and the guide pipe 3 and causing blockage inside the outer sleeve 2.

[0027] To further optimize the scheme, the total length of the outer casing 2 shall not be less than the sum of the total settlement of the formation plus the length of the guide pipe 3 extending into the outer casing 2.

[0028] The reserved settlement length and total length of the outer casing 2 are determined by monitoring the sum of the total settlement of each stratum. The reserved settlement length of the outer casing 2 should be greater than the sum of the total settlement of each soil layer, and the total length of the outer casing 2 should not be less than the sum of the total settlement of the stratum plus the length of the guide pipe 3 extending into the outer casing 2.

[0029] The design was further optimized so that the inner diameter of the outer sleeve 2 matches the outer diameter of the guide tube 3. This facilitates the sliding of the outer wall of the guide tube 3 along the inner wall of the outer sleeve 2.

[0030] The design was further optimized by making the outer wall of the guide pipe 3 slidably connected to the inner wall of the outer sleeve 2. This allows the guide pipe 3 to settle along the inner wall of the outer sleeve 2 when subjected to an upper load.

[0031] The design is further optimized by leaving space between the end of the guide tube 3 that extends into the outer sleeve 2 and the bottom of the outer sleeve 2 for the guide tube 3 to settle. This ensures that when the guide tube 3 is subjected to an upper load, the lower part of the guide tube 3 has a space to settle, preventing damage to the guide tube 3.

[0032] The design was further optimized by creating equally spaced and staggered perforations 4 on the outer wall of the guide pipe 3, which extends into the outer sleeve 2. Groundwater enters the guide pipe 3 through the perforations 4, eliminating the buoyancy caused by the water level difference between the inside and outside of the guide pipe 3.

[0033] Working process: Monitor the sum of the total settlement of each stratum, determine the reserved settlement length and total length of the outer casing 2. The reserved settlement length of the outer casing 2 should be greater than the sum of the total settlement of each soil layer plus the length of the guide pipe 3 extending into the outer casing 2. Insert the guide pipe 3 into the outer casing 2, and make sure that all the holes 4 are inside the outer casing 2. Then, wrap the connection between the guide pipe 3 and the outer casing 2 with geotextile 5 and tie it with straps. The outer casing 2 can then be placed into the borehole.

[0034] Example 2

[0035] The difference between this embodiment and Embodiment 1 is that the total length of the outer sleeve 2 is equal to the reserved settlement length plus 1m, the length of the guide tube 3 extending into the outer sleeve 2 is 1-1.5m, and the flower hole 4 is opened on the outer wall of the guide tube 3 extending into the outer sleeve 2.

[0036] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for reserving bottom settlement space in a stratified settlement monitoring equipment, characterized in that: It includes an outer casing (2) installed inside the borehole (1), and a guide tube (3) is installed inside the outer casing (2). The portion of the guide tube (3) extending out of the top surface of the outer casing (2) is sealed to the outer casing (2) through a connector. The outer wall of the guide tube (3) extending into the outer casing (2) has several perforations (4) for groundwater to enter the guide tube (3).

2. The device for reserving bottom settlement space in the stratified settlement monitoring equipment according to claim 1, characterized in that: The connector includes several layers of geotextile (5) covering the connection between the outer sleeve (2) and the guide tube (3), and several binding straps (6) are wrapped around the outermost layer of geotextile (5).

3. The device for reserving bottom settlement space in the stratified settlement monitoring equipment according to claim 1, characterized in that: The total length of the outer casing (2) is not less than the sum of the total subsidence of the strata plus the length of the guide pipe (3) extending into the outer casing (2).

4. The device for reserving bottom settlement space in the stratified settlement monitoring equipment according to claim 1, characterized in that: The inner diameter of the outer sleeve (2) is adapted to the outer diameter of the guide tube (3).

5. The device for reserving bottom settlement space in the stratified settlement monitoring equipment according to claim 1, characterized in that: The outer wall of the guide tube (3) is slidably connected to the inner wall of the outer sleeve (2).

6. The device for reserving bottom settlement space in the stratified settlement monitoring equipment according to claim 1, characterized in that: There is a space between the end of the guide tube (3) that extends into the outer sleeve (2) and the bottom of the outer sleeve (2) for the guide tube (3) to sink.

7. The device for reserving bottom settlement space in the stratified settlement monitoring equipment according to claim 1, characterized in that: The flower holes (4) are evenly spaced and staggered on the outer wall of the guide tube (3) that extends into the outer sleeve (2).

Images