Underground diaphragm wall groove section foundation cleaning and slurry replacement device and method

Abstract

The invention relates to an underground diaphragm wall groove section foundation cleaning and slurry replacement device and method. Besides a driving function, mobile driving equipment is loaded with an air pump and a slurry suction pump, is connected with a slurry pipe and an air pipe, and realizes slurry replacement by a pump suction reverse circulation method; the slurry pipe is wound on the slurry pipe disc and is hung in the groove section through the guide frame; the viscometer and the densimeter are fixed at the tail end of the slurry pipe, are connected to a control panel in the operation room through an electronic circuit tightly attached to the outer wall of the slurry pipe, and are used for accurately testing the viscosity and specific gravity parameters of the slurry; the slurry pipe disc is mechanically controlled to rotate, so that the slurry pipe is controlled to sink and lift; the control panel is in driving connection with the slurry pipe disc and controls the slurry pipe to be lowered, lifted and stopped. The device replaces a simple slurry taking device to extract slurry for ground detection, and the working efficiency is greatly improved; slurry detection and slurry replacement are combined, pertinence of ground wall foundation cleaning and slurry replacement is improved, and the stability of a ground wall groove section and the quality of ground wall engineering are greatly improved.

Description

Technical Field

[0001] The invention relates to a mud performance detection and mud replacement device for construction, which is mainly used for underground continuous wall groove section foundation cleaning and mud replacement. Background Art

[0002] Underground continuous wall is a foundation project that uses a trenching machine on the ground. Under the condition of mud wall protection, a deep trench is excavated along the peripheral axis of the deep excavation project. After the trench is cleaned, a steel cage is suspended in the trench, and then underwater concrete is poured using the conduit method to build a unit trench section. This is done section by section to build a continuous reinforced concrete wall underground as a water interception, anti-seepage, load-bearing, and water-retaining structure. It has the characteristics of small construction vibration, large wall rigidity, good integrity, fast construction speed, and can save earth and stone. It can be used to build deep foundation pit support and reverse construction in densely populated buildings. It can be used under various geological conditions and is increasingly widely used in urban subways and deep foundation projects.

[0003] In underground continuous wall construction, mud wall trenching construction has become the most important trenching method. The quality of mud in mud wall trenching construction is the key to ensure the smooth construction of underground continuous wall and the quality of its wall construction.

[0004] In the project, underground continuous wall slurry inspection mostly adopts manual slurry sampling (once at the top, middle and bottom) and ground inspection, which is time-consuming and laborious. Mud replacement is mostly carried out by crane, with the slurry pump and slurry pipe hanging to the bottom of the underground continuous wall groove section. The construction is difficult and time-consuming. The foundation cleaning and slurry replacement are not targeted, and the project quality is difficult to guarantee.

[0005] Disadvantages of conventional underground continuous wall foundation cleaning and mud replacement: (1) A crane is required to lift the slurry pump and slurry pipe to the bottom of the underground continuous wall trench section for mud replacement. The crane occupies a large area and is inconvenient to move, which affects the traffic on the site; the slurry pipes are scattered, which affects the civilized construction on the site. (2) Poor targeting. During the foundation cleaning and mud replacement process, the mud performance in the trench section cannot be fed back in real time, and the construction quality cannot be guaranteed. (3) Low efficiency. After the underground continuous wall trench is completed, the trenching machine must be moved away first, and then the slurry pump and slurry pipe must be lifted to the bottom of the trench section by a crane. After the foundation cleaning and mud replacement are completed, the trench section mud is tested, which takes a long time. (4) After the foundation cleaning and mud replacement are completed, the mud in the upper, middle and lower parts of the trench section is tested and the slurry is taken manually, which is time-consuming and labor-intensive. Summary of the invention

[0006] The present invention aims to solve a series of problems arising in the above-mentioned underground continuous wall foundation cleaning and mud replacement, and to provide an underground continuous wall trench section foundation cleaning and mud replacement device and method which is safe, flexible, convenient and can carry out trench section foundation cleaning and mud replacement in a targeted manner.

[0007] To achieve the above-mentioned purpose, the technical scheme of the present invention is: an underground continuous wall trench section cleaning and mud replacement device, including a mobile driving device, a slurry pipe disc, a slurry pipe guide frame, a slurry suction pump, a slurry pipe, an electronic circuit, a viscometer, a density meter and a control panel. In addition to the driving function, the mobile driving device is equipped with an air pump and a slurry suction pump, which are connected to the slurry pipe and the air pipe to realize the pump-suction reverse circulation method for slurry replacement; the slurry pipe is wound on the slurry pipe disc and suspended in the trench section through the guide frame; the viscometer and the density meter are fixed to the end of the slurry pipe and are connected to the control panel in the operating room through an electronic circuit close to the outer wall of the slurry pipe, so as to accurately test the viscosity and specific gravity parameters of the mud; the slurry pipe disc adopts mechanical control to rotate, thereby controlling the sinking and lifting of the slurry pipe; the control panel is connected to the slurry pipe disc drive to control the lowering, lifting and stopping of the slurry pipe.

[0008] The electronic circuit is closely attached to the outer wall of the pulp pipe, one side is connected to the density meter and viscometer, and the other side is connected to the control panel.

[0009] There are "ON / OFF" switch, "down", "lift", "slurry discharge", "stop" and "detection" buttons at the bottom of the control panel; there is a parameter setting bar in the middle of the control panel, which is used to manually set the viscosity and specific gravity standards; the slurry change index is set, and the slurry is automatically changed when the mud viscosity and specific gravity exceed the slurry change index; there is a data display bar on the upper part of the control panel, which is used to display the current "depth", "slurry discharge volume", "viscosity" and "specific gravity" parameter information.

[0010] The control panel is operated and shut down by the "ON / OFF" switch button; the rotation of the slurry pipe disc is controlled by clicking the "down", "up" and "stop" buttons, so as to adjust the depth of the slurry pipe entering the slot section; after the slurry pipe enters the slot section mud, the mud performance in the underground continuous wall slot section is tested by clicking the "test" button; after the density meter and viscometer reach the predetermined position, press the "stop" button and then click the "slurry out" button, and the underground continuous wall slot section base cleaning and mud replacement device cleans the underground continuous wall slot section and replaces the mud according to the set mud standards.

[0011] A method for using an underground continuous wall trench section foundation cleaning and mud replacement device, the specific steps are:

[0012] Step 1: After the underground continuous wall trenching is completed, the trenching machine drives away, the mobile driving equipment is moved to the side of the underground continuous wall trench section, and the end of the slurry pipe guide frame is aligned with the trench section;

[0013] Step 2: Turn on the control panel switch "ON / OFF", click the "Down" button, lower the slurry pipe, electronic circuit, air pipe, density meter and viscometer into the slurry of the underground continuous wall groove section, click the "Detect" button, and the data display column of the control panel will reflect the "depth", "viscosity" and "specific gravity" information. After reaching the set depth, click the "Stop" button to stop the descent;

[0014] Step 3: Click the "Slurry Out" button on the control panel, and the underground continuous wall trench section will be cleaned and the slurry replacement device will replace the slurry according to the set standard value of the slurry parameters. The air pipe jet is combined with the slurry pipe to suck the slurry, and the pump suction reverse circulation principle is used to clean the foundation and replace the slurry;

[0015] Step 4: After the base cleaning and mud replacement are completed, click the "Slurry Out" button on the control panel again, and then click the "Lift" button to test the mud performance indicators at different depths of the underground continuous wall trench section;

[0016] Step 5: After the slurry pipe is lifted out of the underground continuous wall trench section, click "ON / OFF" to close the control panel.

[0017] The beneficial effects of the present invention are:

[0018] (1) The electronic detector for in-situ mud detection (continuity) on the upper, middle and lower trough sections of the ground wall replaces the simple mud extractor for ground detection, greatly improving work efficiency.

[0019] (2) The equipment is equipped with a slurry pump and an air pump, and adopts the pump suction reverse circulation principle to replace the ground wall slurry, replacing the crane to lift the slurry pump and slurry pipe, which greatly improves the project convenience and greatly improves the work efficiency.

[0020] (3) The combination of mud detection and mud replacement improves the pertinence of ground wall foundation cleaning and mud replacement, greatly improving the stability of the ground wall trench section and the quality of the ground wall project.

[0021] The advantages of the present invention are as follows: (1) The equipment is small and easy to move; (2) During the lowering and lifting of the slurry pipe, the mud performance indicators of different parts of the slot section can be measured, and electric mechanical energy is used to replace manual operation, saving time and labor. (3) According to the mud parameter information, the automatic base cleaning and mud replacement are more targeted, and the engineering quality is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the underground continuous wall trench section foundation clearing and mud replacement device of the present invention;

[0023] Figure 2 This is a schematic diagram of the control panel. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 As shown in FIG2 , an underground continuous wall trench section cleaning and mud replacement device of the present invention comprises a mobile driving device 1, a slurry pipe disc 2, a slurry pipe guide frame 3, a control panel 4, a slurry pipe 5, an electronic circuit 6, an air pipe 7, a density meter 8 and a viscometer 9.

[0026] An "ON / OFF" switch, "down", "up", "slurry discharge", "stop" and "detection" buttons are arranged at the bottom of the control panel 4; a parameter setting bar is arranged in the middle of the control panel 4, and the viscosity and specific gravity standards can be manually set; a data display bar is arranged at the top of the control panel 4, which can display the current "depth", "slurry discharge amount", "viscosity" and "specific gravity" and other parameter information.

[0027] The electronic circuit 6 is closely attached to the outer wall of the pulp pipe 5 , one side of which is connected to the density meter 8 and the viscometer 9 , and the other side of which is connected to the control panel 4 .

[0028] The pulp pipe 5 is wound on the pulp pipe disc 2 and suspended in the slot section through the guide frame 3. The pulp pipe disc 2 is mechanically controlled to rotate, thereby controlling the pulp pipe 5 to sink and rise.

[0029] In addition to the driving function, the mobile driving device 1 is equipped with an air pump and a slurry suction pump, which are connected to the slurry pipe 5 and the air pipe 7, and the slurry is replaced by a pump-suction reverse circulation method.

[0030] A density meter 8 and a viscometer 9 are arranged at the tail of the slurry pipe, which are connected to the control panel 4 through an electronic circuit 6 closely attached to the outer wall of the slurry pipe 5, so as to accurately test parameters such as the viscosity and specific gravity of the mud.

[0031] The control panel 4 is operated and shut down by the "ON / OFF" switch button; the rotation of the slurry pipe disc 2 is controlled by clicking the "down", "up" and "stop" buttons, so as to adjust the depth of the slurry pipe 5 entering the groove section; after the slurry pipe 5 enters the mud in the groove section, the mud performance in the underground continuous wall groove section is tested by clicking the "test" button; after the density meter 8 and the viscometer 9 reach the predetermined position, press the "stop" button and then click the "slurry discharge" button, and the system cleans the underground continuous wall groove section and replaces the mud according to the set mud standard.

[0032] A method for using an underground continuous wall trench section foundation cleaning and mud replacement device, the specific steps are:

[0033] Step 1: After the underground continuous wall trenching is completed, the trenching machine drives away, the mobile driving device 1 is moved to the side of the underground continuous wall trench section, and the end of the slurry pipe guide frame 3 is aligned with the trench section;

[0034] Step 2: Turn on the switch "ON / OFF" on the control panel 4, click the "Down" button, lower the slurry pipe 5, electronic circuit 6, air pipe 7, density meter 8 and viscometer 9 into the slurry of the underground continuous wall groove section, click the "Detect" button, and the data display bar on the control panel 4 can reflect the information such as "depth", "viscosity" and "specific gravity" of the lowering. After reaching the set depth, click the "Stop" button to pause the descent;

[0035] Step 3: Click the "Slurry Out" button, and the equipment will replace the slurry according to the set mud parameter standard values, jet through the air pipe 7 and suck the slurry through the slurry pipe 5, and use the pump suction reverse circulation principle to clean the base and replace the mud.

[0036] Step 4: After the base cleaning and mud replacement are completed, click the "Slurry Out" button again, and then click the "Lift" button to detect the mud performance indicators at different depths of the underground continuous wall trench section.

[0037] Step 5: After the slurry pipe 5 and other equipment are lifted out of the underground continuous wall trench section, click “ON / OFF” to close the control panel 4.

Claims

1. An underground continuous wall trench section foundation cleaning and mud replacement device, characterized in that: It includes a mobile driving device, a slurry pipe disc, a slurry pipe guide frame, a slurry suction pump, a slurry pipe, an electronic circuit, a viscometer, a density meter and a control panel. In addition to the driving function, the mobile driving device is equipped with an air pump and a slurry suction pump, which are connected to the slurry pipe and the air pipe to realize the slurry replacement by the pump suction reverse circulation method; the slurry pipe is wound on the slurry pipe disc and suspended in the tank section through the guide frame; the viscometer and the density meter are fixed at the end of the slurry pipe and connected to the control panel in the operating room through the electronic circuit close to the outer wall of the slurry pipe, which is used to accurately test the viscosity and specific gravity parameters of the mud; The pulp pipe disc is mechanically controlled to rotate, thereby controlling the sinking and lifting of the pulp pipe; the control panel is connected to the pulp pipe disc drive to control the lowering, lifting and stopping of the pulp pipe.

2. The underground continuous wall trench section cleaning and slurry replacement device according to claim 1 is characterized by: The electronic circuit is closely attached to the outer wall of the pulp pipe, one side is connected to the density meter and viscometer, and the other side is connected to the control panel.

3. The underground continuous wall trench section cleaning and slurry replacement device according to claim 1 is characterized by: There are "ON / OFF" switch, "down", "up", "slurry discharge", "stop" and "detection" buttons at the bottom of the control panel; there is a parameter setting bar in the middle of the control panel, which is used to manually set the viscosity and specific gravity standards; the slurry change index is set, and the slurry is automatically changed when the mud viscosity and specific gravity exceed the slurry change index; there is a data display bar at the top of the control panel, which is used to display the current "depth", "slurry discharge volume", "viscosity" and "specific gravity" parameter information.

4. The underground continuous wall trench section cleaning and slurry replacement device according to claim 3 is characterized by: The control panel is operated and shut down by the "ON / OFF" switch button; the rotation of the slurry pipe disc is controlled by clicking the "down", "up" and "stop" buttons, so as to adjust the depth of the slurry pipe entering the slot section; after the slurry pipe enters the slot section mud, the mud performance in the underground continuous wall slot section is tested by clicking the "test" button; after the density meter and viscometer reach the predetermined position, press the "stop" button and then click the "slurry discharge" button, and the underground continuous wall slot section base cleaning and mud replacement device cleans the underground continuous wall slot section and replaces the mud according to the set mud standards.

5. A method for using the underground continuous wall trench cleaning and slurry replacement device according to any one of claims 1 to 4, characterized in that: The specific steps are: Step 1: After the underground continuous wall trenching is completed, the trenching machine drives away, the mobile driving equipment is moved to the side of the underground continuous wall trench section, and the end of the slurry pipe guide frame is aligned with the trench section; Step 2: Turn on the control panel switch "ON / OFF", click the "Down" button, lower the slurry pipe, electronic circuit, air pipe, density meter and viscometer into the slurry of the underground continuous wall groove section, click the "Detect" button, and the data display column of the control panel will reflect the "depth", "viscosity" and "specific gravity" information. After reaching the set depth, click the "Stop" button to stop the descent; Step 3: Click the "Slurry Out" button on the control panel, and the underground continuous wall trench section will be cleaned and the slurry replacement device will replace the slurry according to the set standard value of the slurry parameters. The air pipe jet is combined with the slurry pipe to suck the slurry, and the pump suction reverse circulation principle is used to clean the foundation and replace the slurry; Step 4: After the base cleaning and mud replacement are completed, click the "Slurry Out" button on the control panel again, and then click the "Lift" button to detect the mud performance indicators at different depths of the underground continuous wall trench section; Step 5: After the slurry pipe is lifted out of the underground continuous wall trench section, click "ON / OFF" to close the control panel.

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