Discussion on Identification of Hidden Ground Fissures in Type Ⅲ Typical Loess Terrace Sites
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摘要: 西安地裂缝因过量开采地下水、产生不均匀沉降而发育。其中，三类场地属于隐伏地裂缝发育区域。通过地质调查、工程地质钻探等手段，对典型黄土地层三类场地隐伏地裂缝进行调查及识别，确定了地裂缝的位置和走向。结果表明该段地裂缝与西安地区已探明的F3地裂缝高度拟合，建议工程建设中合理选择避让距离。研究可为西安地区典型黄土三类场地地裂缝勘察提供借鉴。Abstract: Xi'an ground fissures are developed due to excessive exploitation of groundwater and uneven settlement. Among them, the type Ⅲ site belong to the development area of hidden ground fissures. The existence of hidden ground fissures in type Ⅲ site in typical loess stratum was investigated and identified by means of geological survey, engineering geological drilling and other means, and the location and trend of ground fissures were determined. The results show that the ground fissure in this section matches the F3 ground fissure that has been proved in Xi'an area. It is suggested that the avoidance distance should be reasonably selected to prevent economic losses. Through the investigation of the ground fissures and the study of the engineering geological characteristics, it can provide a reference for the investigation and exploration of the ground fissures in type Ⅲ typical loess sites in Xi'an area in the future.
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Key words:
- ground fissures /
- loess strata /
- geological disaster /
- ground fissure development /
- geological drilling
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表 1 地质勘探异常位置点
剖面线 异常位置 孔距/m 地下水位
情况地面位置 勘探误差
△k/m2-2' DA3、DA5 9.63 未见 DA3 10.0 3-3' DB3、DB5 9.53 未见 DB3 10.0 01-0'1' DF4、FB5 8.61 未见 DF4 10.0 4-4' DC5、DC4 8.49 未见 DC5 10.0 5-5' DD5、DD4 8.88 未见 DD5 10.0 6-6' DE5、DE4 7.61 未见 DE5 10.0 
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表 2 场地地裂缝勘察成果
推测地裂缝
地面点编号坐 标/m 勘探精度
修正值△k/mX Y DA3 13774.877 25114.805 10.0 DB3 13808.489 25157.536 10.0 DF4 13838.702 25201.080 10.0 DC5 13861.287 25243.470 10.0 DD5 13882.566 25286.497 10.0 DE5 13902.189 25327.786 10.0
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[1] 张玉玺. 西安地裂缝三类场地勘察方法在地铁勘察中的应用[J]. 铁道勘察,2015,41(1):65-67. [2] 徐继山,卢全中,付恒阳. 西安地铁四号线沿线地裂缝的灾害分析与对策研究[J]. 中国地质灾害与防治学报,2012,23(1):76-82. doi: 10.3969/j.issn.1003-8035.2012.01.014 [3] 门玉明,石玉玲. 西安地裂缝研究中的若干重要科学问题[J]. 地球科学与环境学报,2008,3(2):172-176. [4] 张家明. 西安地裂缝场地勘察[J]. 工程地质学报,2006,14:233-236. doi: 10.3969/j.issn.1004-9665.2006.02.016 [5] 张 鹏,刘 帅,文成龙. 西安地裂缝二类场地勘察标志层识别及勘探孔深度确定[J]. 岩土工程技术,2018,32(4):163-166. doi: 10.3969/j.issn.1007-2993.2018.04.001 [6] 宋彦辉,李忠生,高虎艳,等. 西安三类勘察场地隐伏地裂缝识别特征[J]. 地球科学与环境学报,2015,37(4):94-101. [7] DBJ 61—6—2006 西安地裂缝场地勘察与工程设计规程[S]. [8] 孙常青,申 斌,孙振岳,等. 西安云轨地裂缝专项勘察及影响范围分析[J]. 岩土工程技术,2021,35(2):122-127. doi: 10.3969/j.issn.1007-2993.2021.02.011 [9] 李忠生,李新生,高虎艳,等. 西安地铁1号线沿线地裂缝性质研究[J]. 长安大学学报(自然科学版),2013,33(4):75-79, 85. doi: 10.19721/j.cnki.1671-8879.2013.04.013 [10] 石玉玲,门玉明,彭建兵,等. 西安市地裂缝对长安路立交桥致灾机理调查研究[J]. 中国地质灾害与防治学报,2009,20(2):65-69. doi: 10.3969/j.issn.1003-8035.2009.02.014 [11] 潘春娟. 西安地裂缝工程灾害机理模式及防治对策研究[D]. 西安: 长安大学, 2008. [12] 王艺伟,叶淑君,于 军,等. 中国“采水型”地裂缝特征和成因分析[J]. 高校地质学报,2016,22(4):741-752. [13] 黄强兵,马玉杰,姜紫看,等. 地裂缝活动作用下地层应力和位移传递规律研究[J]. 水文地质与工程地质,2018,45(1):144-150,164. -
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