Monitoring system and method for prestress of expansive soil slope anchor rod
A monitoring system and expansive soil technology, applied in the field of expansive soil slope bolt prestress monitoring, can solve the problems of monitoring, high implementation cost, lack of evaluation methods for the impact of expansive soil slope stability, etc.
Inactive Publication Date: 2021-12-14
江苏省地质矿产局第三地质大队 +1
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Problems solved by technology
[0004] At present, most of the existing anchor bolt prestress monitoring adopts on-site connection test, which cannot achieve all-weather and frequent detection, and there is a lack of corresponding evaluation on the impact of the monitoring of the anchor bolt prestress loss on the stability of expansive soil slopes. method, and the existing equipment is difficult to monitor the bolt structure that has been implemented. The overall innovation implementation cost is huge and the man-hours are too high. At the same time, it is difficult to implement a large number of applications in a short period of time. In response to the actual numerical requirements of anchor bolt prestress in different situations, there is an urgent need for a monitoring system and method for anchor bolt prestress in expansive soil slopes
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[0069] On the time axis, t gradually increases. Among the warning colors of green, yellow, orange, and red clock towers, green is the safest, and red is the most dangerous. If there are more than two colors, the relatively dangerous color will be used as the output result. ;
[0070] The judgment of the overall stability warning level of the expansive soil slope is as follows: if the overall stability safety factors of the expansive soil slope are greater than 1.35, 1.15, and 1.05 under the three working conditions of self-weight, self-weight + rainstorm, and self-weight + rainstorm + earthquake, respectively, then The warning level of the expansive soil slope is green; if the overall stability and safety factors of the expansive soil slope are 1.30-1.35, 1.10-1.15, and 1.00-1.05 under the three working conditions of self-weight, self-weight + rainstorm, and self-weight + rainstorm + earthquake, respectively, One of the overall stability and safety factors of the above three w...
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The invention discloses a monitoring system and method for prestress of an expansive soil slope anchor rod. A stress sensor is directly clamped and fixed on the anchor rod, and then the prestress is applied, so that continuous monitoring can be carried out; data is remotely sent by means of a data transmission module, so that a worker does not need to stay for a long time on a monitoring site, and remote monitoring of multiple positions can be carried out; at least one monitoring position is arranged, so that more than one anchor rod can be monitored at the same time, more than one piece of instant data at the same place can be obtained, and the authenticity of the data can be higher; and the pressure sensor is directly installed, so that the structure of the anchor rod does not need to be changed and redesigned, the implementation cost of the device is reduced, and large-area laying is facilitated.
Description
technical field [0001] The invention relates to the technical field of monitoring the prestress of an expansive soil slope anchor, in particular to a monitoring system and method for the prestress of an expansive soil slope anchor. Background technique [0002] Expansive soil, as a kind of highly plastic clay with cracks and expansion and contraction, is extremely sensitive to climate change, and often undergoes irreversible expansion and contraction deformation due to repeated drying and wetting cycles. Under the action of continuous rainfall-evaporation, expansive soil loses water and soil cracks, which provides a channel for rainfall infiltration, which leads to progressive failure of expansive soil strength attenuation. Therefore, in the slope engineering of expansive soil, there is a saying that "every cut will collapse, and no embankment will not collapse". It can be seen that the stability of expansive soil slope seriously affects the safety of engineering constructio...
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IPC IPC(8): E02D33/00E02D5/74E02D5/76G08B21/18
CPCE02D33/00E02D5/74E02D5/76G08B21/182E02D2600/10E02D2600/30
Inventor 王威刘顺青杨春杰汪兵金华丽巫银平
Owner 江苏省地质矿产局第三地质大队