{"title":"水动力评估方法的论证针式过滤装置的地质力学影响","authors":"I. Sadovenko, O. Inkin","doi":"10.31474/2073-9575-2022-1(27)-2(28)-67-77","DOIUrl":null,"url":null,"abstract":"Purpose. The purpose of this work is to develop and test the methodology for determining changes in the level of groundwater over time as a result of the operation of several contours of needle filters of different configurations and the impact of these changes on the subsidence of the earth’s surface. Methods. The proposed comprehensive approach includes the collection, systematization and analysis of data on the existing methods of calculating the subsidence of the earth’s surface at the base of structures in the event of an expected decrease in the level of groundwater. The method of numerical hydrogeological modeling and analytical calculations was used to determine the magnitude of the decrease in the groundwater level and subsidence of the earth’s surface. Findings. According to the results of numerical modeling of geofiltration, it was established that after the second month of operation of the first circuit of needle filters, the groundwater level mark at a distance of 20 m from them is 50.4 m, at 50 m – 51 m, at 100 m – 51.6 m. the main decrease of water occurs in the first 7 m from the drainage circuit and is 6.35 – 3.8 m. After 6 months of operation of the first circuit and 4 months of the second water level mark at a distance of 20 m from the circuit is 46.7 m, at 50 m – 47.8 m, at 100 m – 48.9 m. This, respectively, leads to a decrease in the level at these points by 6.8 m, 5.7 m and 4.6 m. it was established that in the first 100 m from the pit, soil subsidence at the end of operation of the two needle filter circuits will vary from 3.9 cm to 2.6 cm. Originality. The method of determining changes in the groundwater level as a result of the operation of several needle filter circuits and the impact of these changes on the subsidence of the earth’s surface has been substantiated and verified. The developed technique allows to analyze and preliminarily quantitatively assess the hydrodynamic regime and geomechanical state of rocks under the influence of needle filters. Practical implication. The proposed method can be used for engineering forecasts of subsidence of the earth’s surface during water-reduction works with needle filter installations, which is especially relevant in the conditions of built-up areas. Keywords: drainage, needle filters, groundwater, earth’s surface, subsidence.","PeriodicalId":430946,"journal":{"name":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","volume":"90 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"JUSTIFICATION OF HYDRODYNAMIC TA ASSESSMENT METHODOLOGY GEOMECHANICAL INFLUENCE OF NEEDLE FILTER INSTALLATIONS\",\"authors\":\"I. Sadovenko, O. Inkin\",\"doi\":\"10.31474/2073-9575-2022-1(27)-2(28)-67-77\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Purpose. The purpose of this work is to develop and test the methodology for determining changes in the level of groundwater over time as a result of the operation of several contours of needle filters of different configurations and the impact of these changes on the subsidence of the earth’s surface. Methods. The proposed comprehensive approach includes the collection, systematization and analysis of data on the existing methods of calculating the subsidence of the earth’s surface at the base of structures in the event of an expected decrease in the level of groundwater. The method of numerical hydrogeological modeling and analytical calculations was used to determine the magnitude of the decrease in the groundwater level and subsidence of the earth’s surface. Findings. According to the results of numerical modeling of geofiltration, it was established that after the second month of operation of the first circuit of needle filters, the groundwater level mark at a distance of 20 m from them is 50.4 m, at 50 m – 51 m, at 100 m – 51.6 m. the main decrease of water occurs in the first 7 m from the drainage circuit and is 6.35 – 3.8 m. After 6 months of operation of the first circuit and 4 months of the second water level mark at a distance of 20 m from the circuit is 46.7 m, at 50 m – 47.8 m, at 100 m – 48.9 m. This, respectively, leads to a decrease in the level at these points by 6.8 m, 5.7 m and 4.6 m. it was established that in the first 100 m from the pit, soil subsidence at the end of operation of the two needle filter circuits will vary from 3.9 cm to 2.6 cm. Originality. The method of determining changes in the groundwater level as a result of the operation of several needle filter circuits and the impact of these changes on the subsidence of the earth’s surface has been substantiated and verified. The developed technique allows to analyze and preliminarily quantitatively assess the hydrodynamic regime and geomechanical state of rocks under the influence of needle filters. Practical implication. The proposed method can be used for engineering forecasts of subsidence of the earth’s surface during water-reduction works with needle filter installations, which is especially relevant in the conditions of built-up areas. Keywords: drainage, needle filters, groundwater, earth’s surface, subsidence.\",\"PeriodicalId\":430946,\"journal\":{\"name\":\"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”\",\"volume\":\"90 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.31474/2073-9575-2022-1(27)-2(28)-67-77\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.31474/2073-9575-2022-1(27)-2(28)-67-77","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
目的。这项工作的目的是开发和测试确定地下水水位随时间变化的方法,这些变化是由于不同配置的几种轮廓针式过滤器的操作以及这些变化对地球表面沉降的影响。方法。拟议的综合方法包括收集、整理和分析现有计算地下水位预期下降情况下建筑物底部地表沉降的方法的数据。采用数值水文地质模拟和解析计算的方法,确定了地下水位下降和地表沉降的幅度。发现。根据地质过滤数值模拟结果,确定了针式过滤器第一回路运行第二个月后,距针式过滤器20 m处的地下水位标志为50.4 m, 50 m ~ 51 m处,100 m ~ 51.6 m处,水位下降主要发生在距排水回路前7 m处,为6.35 ~ 3.8 m。第一条回路运行6个月,第二条回路运行4个月后,距回路20 m处的水位标尺分别为46.7 m、50 m ~ 47.8 m、100 m ~ 48.9 m。这分别导致这些点的水位下降了6.8 m, 5.7 m和4.6 m。在距离坑的前100 m内,两个针式过滤器回路运行结束时的土壤沉降将从3.9 cm到2.6 cm不等。创意。确定地下水水位变化的方法,由于几个针式滤波电路的运行,以及这些变化对地表沉降的影响,已经得到证实和验证。所开发的技术可以初步定量地分析和评价针状过滤器作用下岩石的水动力状态和地质力学状态。实际的含义。该方法可用于针式过滤器减水工程中地表沉降的工程预测,尤其适用于建成区的情况。关键词:排水,针式过滤器,地下水,地表,沉降
JUSTIFICATION OF HYDRODYNAMIC TA ASSESSMENT METHODOLOGY GEOMECHANICAL INFLUENCE OF NEEDLE FILTER INSTALLATIONS
Purpose. The purpose of this work is to develop and test the methodology for determining changes in the level of groundwater over time as a result of the operation of several contours of needle filters of different configurations and the impact of these changes on the subsidence of the earth’s surface. Methods. The proposed comprehensive approach includes the collection, systematization and analysis of data on the existing methods of calculating the subsidence of the earth’s surface at the base of structures in the event of an expected decrease in the level of groundwater. The method of numerical hydrogeological modeling and analytical calculations was used to determine the magnitude of the decrease in the groundwater level and subsidence of the earth’s surface. Findings. According to the results of numerical modeling of geofiltration, it was established that after the second month of operation of the first circuit of needle filters, the groundwater level mark at a distance of 20 m from them is 50.4 m, at 50 m – 51 m, at 100 m – 51.6 m. the main decrease of water occurs in the first 7 m from the drainage circuit and is 6.35 – 3.8 m. After 6 months of operation of the first circuit and 4 months of the second water level mark at a distance of 20 m from the circuit is 46.7 m, at 50 m – 47.8 m, at 100 m – 48.9 m. This, respectively, leads to a decrease in the level at these points by 6.8 m, 5.7 m and 4.6 m. it was established that in the first 100 m from the pit, soil subsidence at the end of operation of the two needle filter circuits will vary from 3.9 cm to 2.6 cm. Originality. The method of determining changes in the groundwater level as a result of the operation of several needle filter circuits and the impact of these changes on the subsidence of the earth’s surface has been substantiated and verified. The developed technique allows to analyze and preliminarily quantitatively assess the hydrodynamic regime and geomechanical state of rocks under the influence of needle filters. Practical implication. The proposed method can be used for engineering forecasts of subsidence of the earth’s surface during water-reduction works with needle filter installations, which is especially relevant in the conditions of built-up areas. Keywords: drainage, needle filters, groundwater, earth’s surface, subsidence.