Occurrence consequences of mining terrain surface discontinuous linear deformations in a residential building

Orwat, Justyna; Gromysz, Krzysztof

doi:10.1088/1742-6596/1781/1/012013

Cited by 9 publications

(4 citation statements)

References 14 publications

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“…For one-segment buildings, the raising height of corners is determined by the building deflection. This deflection, depending on the range of the planned repair works, includes either the measured inclination of floor or slabs, or deflection of the wall [26].…”

Section: Introductionmentioning

confidence: 99%

Computing the value of uneven raising of building consisting of nine segments deflected from vertical due to mining exploitation

Gromysz

Orwat

2023

J. Phys.: Conf. Ser.

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Deflection of buildings from vertical is a common damage caused by underground mining. Its removal consists in tearing the building apart at the level of one of the storeys, most often in the basement, and then unevenly lifting a part of the building above the tearing plane with the use of piston hydraulic jacks. One of the conditions for a properly carried out rectification is the correct computing of the height of lifting the individual corners of the building. The subject of the article is the deflected from vertical building of large projection (64.0 m × 41.9 m). The building consists of nine dilated segments, which are functionally related. The width of expansion joints between segments is about 10 cm. The deflection from vertical of the building occurred as a result of deformation of the mining area. Due to the significant projection of the building, the deflection of each segment is not the same. It was decided that deflection of the building would be removed by uneven raising of the structure with jacks mounted in the walls. The method of computing the value of uneven raising of the building is presented. In the first step the deflection of each segment was identified. Than the segments were divided into groups, due to their functional solutions. Then, for each group, the average deflection was determined. On the basis of this deflection, the values of uneven raising of each segment were determined. Described procedure made it possible to minimize the number of steps that will appear between the segments. Thanks to this, the building will regain functionality after carrying out the planned renovation.

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Section: Introductionmentioning

confidence: 99%

Computing the value of uneven raising of building consisting of nine segments deflected from vertical due to mining exploitation

Gromysz

Orwat

2023

J. Phys.: Conf. Ser.

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“…Mining-induced deformation is characterized by high magnitude and nonlinearity and usually leads to serious construction damage (Orwat and Gromysz, 2021).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of synthetic aperture radar interferometric techniques for monitoring of fast deformation caused by underground mining exploitation

Pawłuszek-Filipiak

Ilieva

Wielgocka

et al. 2022

Proceedings of the 5th Joint International Symposium on Deformation Monitoring - JISDM 2022

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EPOS-PL+ is the Polish national realization of the European Plate Observing System (EPOS) project that aims to build a multidisciplinary infrastructure. It allows integration of a variety of geoscience expertise and techniques to better understand the geohazard related to the underground mining of coal in the Upper Silesian Coal Basin (USCB) in Poland. The study case in this project is the Marcel Mine, located within USCB, where the detected subsidence for the analyzed period of four months reaches 91 cm. Various interferometric processing techniques demonstrated some advantages and also some limitations in the context of mining deformation measurement, including accuracy, spatial resolution, detectable deformation rate, atmospheric delay, and ability to detect the maximal deformation gradients. This is especially important from a mining perspective. Therefore, we investigated three different interferometric processing techniques to monitor fast mining deformation in the Marcel hard coal mine area. More specifically, we used conventional DInSAR, Small Baseline Subsets (SBAS), and Persistent Scattered Interferometry (PSInSAR). The result confirmed that none of these methods can be considered as the best. The DInSAR approach allows capturing the maximal deformation gradient, which was not possible with the PSInSAR and SBAS approaches. On the contrary, PSInSAR and SBAS allow us to provide less noisy and reliable results in the area of safety pillars.

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“…Moreover, many buildings are deflected as the effect of non-uniform subsidence of mining areas [ 12 ], resulting from the compression of voids left after coal bed extraction [ 13 ]. Subsidence of the mining area may take the form of continuous [ 14 , 15 ] or discontinuous deformation [ 16 ]. Deflections can be also caused by exploitation of groundwater reservoirs [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Parameters of a Rectified Tank on the Basis of In-Situ Tests

Gromysz

2021

Materials

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The vertical deflection of building structures is a common problem. However, the rectification of objects is rarely carried out due to the lack of information about the parameters of objects requiring rectification. The subject of the analysis are parameters of rectified water tank 950 m3 in volume, which were investigated due to the stiffness and number of supports built into the structure. During in-situ testing, the stiffnesses of supports were determined. The model of the rectified structure was then defined and it was shown that its parameters can be described by means of three matrices: stiffness, displacement forms of the elevated object and displacement forms of supports. Absolute values of elements of the stiffness matrix increased as the stiffness and number of supports increased. At the same time, values of elements of the matrix of displacement forms of the elevated object increased. The conducted energy analysis demonstrated that the amount of energy required for the vertical displacement of the structure decreased with an increasing stiffness and number of supports. This means that placing a greater number of supports under rectified structures and ensuring more rigid supports is beneficial to the rectification. Results of the conducted analyses were confirmed during in-situ tests.

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Occurrence consequences of mining terrain surface discontinuous linear deformations in a residential building

Cited by 9 publications

References 14 publications

Computing the value of uneven raising of building consisting of nine segments deflected from vertical due to mining exploitation

Computing the value of uneven raising of building consisting of nine segments deflected from vertical due to mining exploitation

Evaluation of synthetic aperture radar interferometric techniques for monitoring of fast deformation caused by underground mining exploitation

Analysis of Parameters of a Rectified Tank on the Basis of In-Situ Tests

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