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Method for burying monitoring method for monitoring bedrock settlement

A subsidence and monitoring point technology is applied in the field of burying monitoring points for monitoring bedrock subsidence, which can solve the problems of no reserved free section, lack of firmness, affecting the accuracy of subsidence, etc., and achieve the effect of ensuring the accuracy of measurement

Inactive Publication Date: 2020-01-10
广州市地质调查院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past, the ground subsidence monitoring points in the goaf of the mine were mainly buried in the shallow part of the surface, and there were the following problems: 1. The subsidence monitoring results mixed the bedrock subsidence and the overlying Quaternary subsidence, resulting in inaccurate subsidence; 2. The construction of the settlement benchmark and the bedrock anchorage section is difficult and not firm, which affects the accuracy of the settlement; 3. There is no free section reserved or protected in the upper part, and the settlement benchmark is easily disturbed by the overlying Quaternary soil , making the settlement data inaccurate

Method used

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  • Method for burying monitoring method for monitoring bedrock settlement
  • Method for burying monitoring method for monitoring bedrock settlement

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A method for embedding monitoring points for monitoring bedrock settlement, comprising the following steps:

[0027] S1: Drill according to the burial depth of the bedrock, and drill to a depth of 3-5 meters in the micro-weathered layer of the bedrock;

[0028] S2: Clean the bottom of the borehole, and use casing 1 to protect the Quaternary soil above the borehole;

[0029] S3: Bury the pole 2 to the bottom of the borehole, the top of the pole 2 passes through the ground, and anchor the pole 2 placed in the slightly weathered layer in the bedrock;

[0030] S4: Install the pole head at the end of the pole 2 passing through the ground.

[0031] Wherein, before performing step S1, conventional pre-work needs to be carried out, including on-site stakeout and fixed points according to the design drawings, preparation for drilling construction and erection of the drilling rig.

[0032] On-site stakeout to determine the points, details are as follows:

[0033] According to ...

Embodiment 2

[0060] This method can effectively avoid the interference and influence of Quaternary soil, such as figure 2 As shown, it is a comparison table of settlement measurement results of bedrock, brine wells, and corresponding monitoring points on the ground in the Yulonggui Nitrate Mine mining area. This table shows the comparison of the settlement data monitored by the bedrock settlement monitoring points implemented by this method and the settlement data of the mine monitoring, and 3 sets of comparison examples are set to compare the settlement measurement monitoring implemented by this method with the mine settlement monitoring .

[0061] Among them, serial numbers 1, 4, and 8 correspond to monitoring point numbers: base 2, base 3, and base 5 indicate bedrock settlement monitoring points, and serial numbers 2, 5, and 9 correspond to monitoring point numbers: 3-2#, 16* 2#, 12-1# represent mine monitoring points, serial numbers 3, 7, 10, corresponding monitoring point numbers ar...

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Abstract

The invention relates to the technical field of goaf monitoring and particularly relates to a method for burying a monitoring method for monitoring bedrock settlement. The method comprises the steps of (S1) drilling according to the burying depth of bedrock until drilling depth reaches 3-5m of a slightly weathered layer in the bedrock, (S2) cleaning a bottom of the drilled hole and adopting a sleeve protection wall for a quaternary soil body on an upper portion of a drilled hole, (S3) burying a marker post to a bottom of the drilled hole, allowing a top end of the marker post to penetrate outof the ground, and anchoring the marker post placed in the slightly weathered layer in the bedrock, and (S4) mounting a marker post head at one end, penetrating out of the ground, of the marker post.The interference of an overlying quaternary soil body can be effectively eliminated, and so the measurement accuracy of the bedrock settlement amount is ensured.

Description

technical field [0001] The invention relates to the technical field of goaf monitoring, in particular to a method for embedding monitoring points for monitoring bedrock settlement. Background technique [0002] The ground subsidence monitoring of the goaf in the mine is an important monitoring measure for the ground subsidence of the goaf caused by deep mining. By monitoring the change of the settlement, the status of the ground subsidence in the goaf of the mine is monitored, the actual settlement and its change law are obtained, and the ground is analyzed. The development trend of subsidence provides prediction and forecast data for ground subsidence disasters in goafs of mines, and ensures the safety of people's lives and property. [0003] In the past, the ground subsidence monitoring points in the goaf of the mine were mainly buried in the shallow part of the surface, and there were the following problems: 1. The subsidence monitoring results mixed the bedrock subsidenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00G01C15/06
CPCG01C5/00G01C15/06
Inventor 余革淼周心经邓雄文李茹石晓龙
Owner 广州市地质调查院
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