Foundation pit exploration pipe plugging device

Abstract

The utility model relates to the technical field of foundation pit exploration, and discloses a foundation pit exploration pipe plugging device which comprises a plugging pipe (1) arranged in an exploration pipe and a positioning partition assembly (2) arranged in the plugging pipe (1) in a sliding mode, the positioning partition assembly (2) comprises a positioning pipe (21) arranged in the plugging pipe (1) in a sliding mode, and the end portion of the positioning pipe (21) is connected with a plurality of supporting pieces (22) in a rotating mode. An elastic piece (23) is arranged in the supporting piece (22) and the positioning pipe (21); according to the plugging device, blocking is formed on the confined water layer through the folding type supporting piece, the exploration pipe can be plugged, the high pressure bearing capacity is achieved, a pipe hole is supported, and the safety problems such as foundation pit collapse are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit exploration, in particular to a foundation pit exploration pipe plugging device. Background Art

[0002] During foundation pit excavation, geological exploration is the primary task. Geological exploration mainly includes the formation and analysis of information such as site geological conditions, groundwater levels and underground pipelines; its exploration methods mainly include exploration drilling, geological radar exploration and geological resistivity exploration. Exploration drilling is a commonly used geological exploration method. By sampling and analyzing the boreholes, the properties and distribution of the underground soil layers can be determined.

[0003] During geological exploration, an exploration pipe is usually arranged in the exploration hole, and after the exploration is completed, the exploration pipe needs to be pre-sealed. At present, a simple sealing method is usually used, such as pouring mortar, which has a poor waterproof effect. For some exploration pipes connected to groundwater, leakage accidents are prone to occur, which endangers the safety of the foundation pit. Improved technology, such as the foundation pit exploration pipe sealing device with the authorization publication number CN220013782U, includes a sealing cover, a grouting pipe and a waterproof mortar layer. The sealing cover is slidably arranged in the exploration pipe, and the sealing cover contains a barrier layer, which is used to separate the exploration pipe and the pressure water layer; and the barrier layer is filled into the sealing cover through the grouting pipe to preliminarily separate the groundwater and the exploration pipe, and mortar is poured into the exploration pipe to form a waterproof mortar layer. Since the waterproof mortar layer is located between the top opening of the exploration pipe and the barrier layer, the waterproof mortar layer can effectively prevent groundwater from entering the foundation pit structure through the exploration pipe, further improving the sealing and waterproofing effect. However, there are high restrictions on the plugging cover. Not only does the diameter of the plugging cover need to be smaller than the diameter of the exploration pipe, but the plugging cover also requires a larger pressure-bearing capacity. Otherwise, when the mortar is poured in, the plugging cover is easy to break, causing safety problems such as foundation pit collapse. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a foundation pit exploration pipe sealing device, which forms a barrier in the pressurized water layer through a foldable support member, which can not only seal the exploration pipe, but also has a strong pressure-bearing capacity, supports the pipe hole, and avoids safety problems such as foundation pit collapse.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The foundation pit exploration pipe plugging device comprises a plugging pipe arranged in the exploration pipe and a positioning partition assembly slidably arranged in the plugging pipe, the positioning partition assembly comprises a positioning pipe slidably arranged in the plugging pipe, the end of the positioning pipe is rotatably connected with a plurality of support members, elastic members are arranged in the support members and the positioning pipe, when entering the exploration pipe, the support members are folded in the plugging pipe and the elastic members are compressed, after reaching the pressurized water layer, the plugging pipe moves upward, and the support members are expanded under the action of the elastic members to form a water-proof layer and a plugging layer distributed above the pressurized water layer.

[0007] Preferably, a water outlet pipe is slidably provided inside the positioning tube, and a through hole is provided at the bottom end of the positioning tube, and the diameter of the water outlet pipe is smaller than the diameter of the through hole, so as to drive the bottom end of the positioning tube to above the pressurized water layer and form a water-proof layer above the pressurized water layer.

[0008] Preferably, the water outlet pipe is connected to a drainage pipe so as to lead out the internal water through the drainage pipe.

[0009] Preferably, the support member includes a support rod and a blocking member arranged at the end of the support rod, the elastic member is a torsion spring, which is connected to the support rod, the support rod is hollow to form a channel, and the blocking member is connected to the channel to form a blocking base point.

[0010] Preferably, the support rod is provided with a discharge hole located at the support rod channel, and a plurality of discharge holes are provided on the side of the support rod, so that the discharge hole is connected with the blocking base point to form a blocking layer.

[0011] Preferably, a waterproof mortar layer is formed between the exploration pipe and the plugging pipe by pouring mortar.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device of the utility model forms a barrier in the pressurized water layer through the foldable support member, and distributes liquid above the pressurized water layer through the positioning pipe to form a waterproof layer and a blocking layer, thereby effectively isolating groundwater and the exploration pipe; mortar is then poured into the exploration pipe through the blocking pipe to form a waterproof mortar layer, which effectively prevents groundwater from entering the foundation pit structure through the exploration pipe, thereby improving the blocking and waterproofing effect, not only sealing the exploration pipe, but also having a strong pressure-bearing capacity, supporting the pipe hole, and avoiding safety problems such as foundation pit collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the foundation pit exploration pipe sealing device in a folded state.

[0015] Figure 2 This is a structural schematic diagram of the foundation pit exploration pipe plugging device in an expanded state.

[0016] Figure 3 This is a structural schematic diagram of the foundation pit exploration pipe plugging device entering the exploration pipe.

[0017] Figure 4 This is a structural schematic diagram of the foundation pit exploration pipe plugging device when it enters the plugging stage.

[0018] Figure 5 This is a schematic diagram of the completed structure of the foundation pit exploration pipe sealing device.

[0019] In the accompanying drawings: 1-sealing pipe, 2-positioning partition assembly, 21-positioning pipe, 211-through hole, 22-support member, 221-support rod, 2211-discharge hole, 222-sealing member, 23-elastic member, 3-water outlet pipe, 4-drainage pipe, 10-pressure water layer, 20-waterproof layer, 30-sealing layer, 40-waterproof mortar layer. DETAILED DESCRIPTION

[0020] Embodiment 1: A preferred embodiment of the utility model provides a foundation pit exploration pipe plugging device, including a plugging pipe 1 arranged in the exploration pipe and a positioning partition assembly 2 slidably arranged in the plugging pipe 1, the positioning partition assembly 2 includes a positioning pipe 21 slidably arranged in the plugging pipe 1, and the end of the positioning pipe 21 is rotatably connected with a plurality of support members 22, and elastic members 23 are arranged in the support members 22 and the positioning pipe 21. When entering the exploration pipe, the support members 22 are folded in the plugging pipe 1 and the elastic members 23 are compressed. After reaching the pressurized water layer 10, the plugging pipe 1 moves upward, and the support members 22 are expanded under the action of the elastic members 23 to form a waterproof layer 20 and a sealing layer 30 above the pressurized water layer 10; a barrier is formed in the pressurized water layer by the foldable support members, and a waterproof layer and a sealing layer are distributed above the pressurized water layer by injecting liquid into the positioning pipe, thereby effectively isolating groundwater and the exploration pipe.

[0021] A water outlet pipe 3 is slidably provided inside the positioning pipe 21, and a through hole 211 is provided at the bottom end of the positioning pipe 21. The diameter of the water outlet pipe 3 is smaller than the diameter of the through hole 211, so as to drive the bottom end of the positioning pipe 21 to the top of the pressurized water layer 10 and form a waterproof layer 20 above the pressurized water layer 10; the water outlet pipe 3 is connected to the drainage pipe 4 to draw out the internal water through the drainage pipe 4.

[0022] Embodiment 2: A preferred embodiment of the utility model provides a foundation pit exploration pipe sealing device, which differs from the above-mentioned embodiment only in that: the support member 22 includes a support rod 221 and a sealing member 222 arranged at the end of the support rod 221, the elastic member 23 is a torsion spring, which is connected to the support rod 221, the support rod 221 is hollow inside to form a channel, and the sealing member 222 is connected to the channel to form a sealing base point; the support rod 221 is provided with a discharge hole 2211 located at the channel of the support rod 221, and a plurality of discharge holes 2211 are provided on the side of the support rod 221 to connect the discharge with the sealing base point to form a sealing layer 30.

[0023] Embodiment 3: A preferred embodiment of the utility model provides a foundation pit exploration pipe sealing device, which differs from the above-mentioned embodiment only in that a waterproof mortar layer 40 is formed between the exploration pipe and the sealing pipe 1 by pouring mortar, and the waterproof mortar layer 40 effectively prevents groundwater from entering the foundation pit structure through the exploration pipe, thereby improving the sealing and waterproofing effect, not only achieving the sealing of the exploration pipe, but also having a strong pressure-bearing capacity, supporting the pipe hole, and avoiding safety problems such as foundation pit collapse.

[0024] The method for plugging a foundation pit exploration pipe using the above foundation pit exploration pipe plugging device comprises the following steps:

[0025] (1) Determine the location of the confined water layer 10, select the plugging pipe 1, positioning pipe 21 and outlet pipe 3 of appropriate diameter, and use an excavator to press the device vertically downward until it sinks 5-10 m above the confined water layer 10;

[0026] (2) The water outlet pipe 3 is held against the bottom of the positioning pipe 21, and a waterproof material is poured into the hose to form a waterproof layer 20, wherein the waterproof material is a foaming agent;

[0027] (3) The plugging pipe 1 moves upward, and the support member 22 is stretched open under the action of the elastic member 23; the outlet pipe 3 moves upward, and the plugging material is poured between the outlet pipe 3 and the positioning pipe 21. The plugging material includes 7-10 parts of cement, 1 part of gypsum powder, 0.5-1 part of accelerator and water in parts by weight. The plugging material flows from the discharge hole 2211 into the channel of the support rod 221, into the plugging member 222 and outside the support rod 221, and forms a plugging layer 30 above the waterproof layer 20;

[0028] (4) The plugging pipe 1 continues to move upward, and a waterproof mortar material is poured between the plugging pipe 1 and the positioning pipe 21 to form a waterproof mortar layer 40 between the exploration pipe and the positioning pipe 21;

[0029] (5) The water gushing out of the exploration pipe flows into the positioning pipe 21 and then is led out from the outlet pipe 3 to the drainage pipe 4 to avoid the inhalation of a large amount of mortar.

Claims

1. The plugging device for foundation pit exploration pipe, characterized in that, The invention comprises a plugging pipe (1) arranged in an exploration pipe and a positioning partition assembly (2) slidably arranged in the plugging pipe (1). The positioning partition assembly (2) comprises a positioning pipe (21) slidably arranged in the plugging pipe (1). The end of the positioning pipe (21) is rotatably connected to a plurality of support members (22). Elastic members (23) are arranged in the support members (22) and the positioning pipe (21). When entering the exploration pipe, the support members (22) are folded in the plugging pipe (1) and the elastic members (23) are compressed. After reaching the pressure water layer (10), the plugging pipe (1) moves upward and the support members (22) are expanded under the action of the elastic members (23) to form a water-proof layer (20) and a plugging layer (30) distributed above the pressure water layer (10).

2. The foundation pit exploration pipe plugging device according to claim 1, characterized in that, A water outlet pipe (3) is slidably arranged inside the positioning pipe (21), and a through hole (211) is arranged at the bottom end of the positioning pipe (21). The diameter of the water outlet pipe (3) is smaller than the diameter of the through hole (211), so as to drive the bottom end of the positioning pipe (21) to above the pressure water layer (10), and form a water-proof layer (20) above the pressure water layer (10).

3. The foundation pit exploration pipe plugging device according to claim 2, characterized in that, The water outlet pipe (3) is connected to the drainage pipe (4) so as to guide the internal gushing water out through the drainage pipe (4).

4. The foundation pit exploration pipe plugging device according to claim 1, characterized in that, The support member (22) comprises a support rod (221) and a blocking member (222) arranged at the end of the support rod (221); the elastic member (23) is a torsion spring connected to the support rod (221); the support rod (221) is hollow inside to form a channel; the blocking member (222) is connected to the channel to form a blocking base point.

5. The foundation pit exploration pipe plugging device according to claim 4, characterized in that, The support rod (221) is provided with a discharge hole (2211) located at the channel of the support rod (221), and a plurality of discharge holes (2211) are provided on the side of the support rod (221) so as to connect the discharge hole with the blocking base point to form a blocking layer (30).

6. The foundation pit exploration pipe plugging device according to claim 1, characterized in that, A waterproof mortar layer (40) is formed between the exploration pipe and the plugging pipe (1) by pouring mortar.

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