CN114922154A

CN114922154A - System for monitoring water content of foundation soil of building

Info

Publication number: CN114922154A
Application number: CN202210613672.4A
Authority: CN
Inventors: 亢泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-08-19

Abstract

The invention discloses a system for monitoring the water content of foundation soil of a building. This system belongs to the water content monitoring of housing construction field foundation soil, and this system includes: the system comprises a water content monitoring module, an information transmission module, an alarm module and a building geotechnical engineer field processing for water content alarm. When the collapsible site building foundation is damaged by water, the bearing capacity and modulus of the foundation soil are rapidly reduced, so that the foundation is unevenly sunk, and a house is cracked, inclined or even overturned. Collapsible place can not in time be found because of the peripheral leaking of house foundation for a long time, leads to the ground to be soaked by the water for a long time, and the building fracture that foundation soil softens and then takes place, the accident of slope is often not fresh, and this system has just to this type of place the monitoring with newly-built building foundation soil water content, in case take place that peripheral pipeline leaks or the water of unknown reason permeates foundation soil, the very first time warning, then handles through professional ground personnel, eliminates hidden danger at the bud state.

Description

System for monitoring water content of foundation soil of building

Technical Field

The invention relates to a system for monitoring the water content of foundation soil in the field of buildings, in particular to a system for monitoring, alarming and processing the water content of the foundation soil of buildings in collapsible fields (collapsible loess regions, artificial backfill regions and all fields sensitive to water).

Background

The laying of water supply and drainage pipelines at the periphery of buildings in residential areas belongs to places which are easy to ignore in quality supervision and acceptance for a long time, so that the construction quality is uneven, particularly, a small leakage point in a collapsible site can cause the ground to sink, then the pipelines break and then leak in a large area, the pipelines cannot be found at the first time because the pipelines are buried underground, most of the situations are that the buildings sink and crack, and then the pipelines are not properly treated, and finally the sinking, the cracking and the inclining of the buildings and even the toppling tragedy are caused.

Loess under the natural state, artifical backfill loess, as the loess of compound foundation pile soil, even eliminate its collapsibility through handling, but this characteristic of water content increase bearing capacity and modulus decline can not change, and a large amount of, long-term water soaking inevitably leads to this kind of place foundation soil bearing capacity and modulus to descend, and the building just can take place to sink when descending a certain critical value. According to incomplete statistics, the water leakage time of buildings sinking, cracking and inclining due to water leakage is usually more than half a year, and if water leakage can be found at the first time, effective measures are taken to completely prevent accidents.

In the past 10 years, the urbanization process is fast, a large number of houses are built in cities, the building system is relatively complete, but the later maintenance management system does not keep up, and a large part of house damage events are caused by improper management. The social contradiction caused by the cracking, the inclination and even the overturn of the building is more and more intense, so that a matched management system is urgently needed to fill the gap.

Disclosure of Invention

In view of the above problems, the present invention provides a system for monitoring water content of foundation soil of a building, so as to solve the problem that the foundation soil of a collapsible site sinks, cracks and even topples due to water invasion.

In order to achieve the purpose, the invention adopts a system for monitoring the water content of foundation soil of a building, which comprises a monitoring module, an information transmission module, an alarm module and a geotechnical engineer for field processing, wherein the water content monitoring module is embedded at the lower part of a foundation, data acquired regularly is transmitted to a command center through the information transmission module, the alarm module in the command center alarms the data of which the transmitted water content exceeds the upper limit water content of the corresponding geotechnical category or the water content is increased too fast, the professional geotechnical engineer arrives at an alarm building after receiving the alarm, the water content of an alarm part is rechecked through a small Luoyang shovel in an inspection pipe, and after the water content is found to be consistent with the alarm data, the special management is started.

Furthermore, the monitoring module utilizes the characteristics of different types of foundation soil with different water content states and different resistivity, and achieves the purpose of measuring the water content change of the foundation soil by measuring the resistance change.

Furthermore, the lower part of the foundation refers to 2m of the periphery of the building foundation (if a lime soil cushion layer is required to be arranged on the periphery of the lime soil cushion layer in a close fit mode), the position 0.5-2.0 m below the elevation of the base and the horizontal distance 10-15 m.

Further, the building refers to the building on the collapsible ground, contains collapsible loess place, artifical backfill soil place and all places sensitive to water.

Furthermore, the upper limit water content is extracted from an upper limit water content database, and the upper limit water content database collects the water content of different types of rock and soil, and the bearing capacity and the modulus of the foundation of the rock and soil are obviously reduced when the water content of the different types of rock and soil reaches a certain value.

Further, the inspection tube is a pipeline with the diameter of 0.1-0.2 mm, the bottom of the pipeline is located at 0.1m of the upper portion of the water content monitoring module, the top of the pipeline is located near the ground surface, the bottom of the pipeline is tamped with silt after the water content monitoring module is placed, the top of the pipeline needs to be sealed by a waterproof lock cover plate, and the pipeline needs to be kept sealed in a normal working state.

Furthermore, the special treatment comprises a water source exploration, a water leakage point repair and treatment, a foundation soil repair and burying restoration water content monitoring module.

Furthermore, the foundation soil restoration comprises the measures of excavation and airing, quicklime pile water absorption, filling and replacement, grouting reinforcement, foundation underpinning and the like.

The beneficial effects of the invention are as follows:

1) the water leakage event around the building foundation is found at the first time, and measures are taken in time, so that the foundation soil is effectively prevented from being damaged by water;

2) in the process of arranging the monitoring points of the existing building, the periphery of the existing building is checked for water leakage, and a professional treatment mode is adopted in time for the building which has leaked water but has little harm, so that the property loss of people is reduced to the minimum;

3) the inspection tube is arranged to recheck the data and replace the fault detection module in time;

4) a professional geotechnical engineer is introduced to the later-stage management of the building, so that professional people can solve professional problems;

5) the system fills the gap of building foundation management of the urban collapsible site, can be used as a foundation, and gradually introduces other part management modules of the building, thereby gradually realizing the goal of intelligently managing the city.

Drawings

FIG. 1 is a block diagram of the main flow of the present invention;

FIG. 2 is a perspective view of the distribution of modules of the present invention;

FIG. 3 is a schematic view of the monitoring module and inspection tube placement process of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Referring to the attached drawing 1, the invention provides a system for monitoring the water content of foundation soil of a building, regularly acquired data is transmitted to a command center through a water content monitoring module which is pre-embedded at the lower part of a foundation through an information transmission module, an alarm module in the command center alarms the data of which the transmission water content exceeds the upper limit water content of a corresponding rock and soil category or the water content is increased too fast, a professional geotechnical engineer receiving the alarm arrives at an alarm building, an inspection pipe rechecks the water content of an alarm part through a small Luoyang shovel, if the water content is inconsistent with the alarm data and the water content of the foundation soil is normal, the alarm is cancelled, and a false alarm element is subjected to maintenance treatment, and if the water content is consistent with the alarm data and the water content of the foundation soil is abnormal, the special treatment is started.

Referring to the attached drawing 2, a monitoring module is buried in the periphery of a building foundation 2m in advance, the position of the monitoring module is 0.5m below the elevation of the building foundation, the monitoring module collects water content data periodically and transmits the water content data to an above-ground information transmission module through a lead at the horizontal interval of 10-15 m, the above-ground information transmission module generally transmits the water content data to a command center through wireless signals, the command center processes the data, general data are stored, and a professional geotechnical engineer is dispatched to a building at an alarm data position for processing.

Referring to the attached figure 3, in the embedding process of the monitoring module at the periphery of the existing building, a hole is formed to a preset position, the diameter of the formed hole is larger than that of a prefabricated inspection pipe, then a monitoring modulus connecting wire is placed to the monitoring position and backfilled by plain soil, the monitoring module is embedded to a certain depth at the backfilling height, the plain soil is generally the same kind of soil as foundation soil, then the inspection pipe is placed on the backfilled plain soil, and the periphery of the inspection pipe is sealed by clay.

Claims

1. The utility model provides a system for monitoring of building foundation soil water content, contains monitoring module, information transmission module, alarm module and geotechnical engineer's field processing, its characterized in that: through the water content monitoring module buried underground in the ground lower part, pass through the information transmission module with the data of periodic acquisition, transmit command center, alarm module in command center reports to the police to the transmission water content surpasss the upper limit water content or the too fast data of water content increase by a wide margin of corresponding ground classification, receive professional geotechnique engineer after the warning and reach the warning building, carry out the recheck through small-size luoyang shovel to warning position water content at the inspection tube, discover the water content and the unanimous back of alarm data, begin to carry out the special improvement.

2. The system for monitoring the moisture content of the foundation soil of a building as claimed in claim 1, wherein: the monitoring module utilizes the characteristics of different types of foundation soil with different water content states and different resistivity, and achieves the purpose of measuring the water content change of the foundation soil through measuring the resistance change.

3. The system for monitoring the moisture content of the foundation soil of a building as claimed in claim 1, wherein: the lower part of the foundation refers to 2m of the periphery of a building foundation (if an ash soil cushion layer is arranged to be tightly attached to the periphery of the ash soil cushion layer), the position of 0.5-2.0 m below the elevation of the foundation and the horizontal distance of 10-15 m.

4. The system for monitoring the moisture content of the foundation soil of a building as claimed in claim 3, wherein: the building refers to a building on a collapsible site and comprises a collapsible loess site, an artificial backfill soil site and all sites sensitive to water.

5. The system for monitoring the moisture content of the foundation soil of a building as claimed in claim 1, wherein: the upper limit water content is extracted from an upper limit water content database, and the upper limit water content database collects water content of different types of rock and soil, wherein the bearing capacity and the modulus of the foundation are obviously reduced when the water content of the rock and soil reaches a certain value.

6. The system for monitoring the moisture content of the foundation soil of a building as claimed in claim 1, wherein: the inspection tube is a pipeline with the diameter of 0.1-0.2 mm, the bottom of the pipeline is located at 0.1m above the water content monitoring module, the top of the pipeline is located near the earth surface, the bottom of the pipeline is tamped with silt after the water content monitoring module is placed, the top of the pipeline needs to be sealed by a waterproof lock cover plate, and the pipeline needs to be sealed in a normal working state.

7. The system for monitoring the moisture content of the foundation soil of a building as claimed in claim 1, wherein: the special treatment comprises water source exploration, water leakage point repair and treatment, foundation soil repair and water content restoration burying monitoring module.

8. The system for monitoring the moisture content of the foundation soil of a building as claimed in claim 7, wherein: the foundation soil restoration comprises the measures of excavation and airing, quicklime pile water absorption, replacement and filling, grouting reinforcement, foundation underpinning and the like.