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首页> 外文期刊>Australian Geomechanics >The development of a mine subsidence constraints map for the Hunter Economic Zone (HEZ) industrial lands project
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The development of a mine subsidence constraints map for the Hunter Economic Zone (HEZ) industrial lands project

机译：为Hunter经济区（HEZ）工业用地项目开发防沉陷约束图

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The Hunter Economic Zone (HEZ) is a site of approximately 900 Ha in area, which has been zoned for industrial use and is located south of the villages of Pelaw Main, Kurri Kurri and Weston within the Cessnock Local Government Area. The HEZ will offer large industrial lots serviced by a spine road and internal road system with a potential rail link from the north. The site falls within the recently proclaimed Tomalpin Mine Subsidence District. The HEZ was extensively undermined by coal extraction in the Greta and Homeville Seams, with depths of cover to the multiple underground workings ranging from less than 10 m in the north to over 200 m in the south of the site. Three coal seams were mined during first workings and in some cases secondary workings were also made. As a result of the extensive and often shallow mine workings, there is a high risk of mine subsidence impacts across some areas near the northern end of the site. Pothole type subsidence is of particular concern. The risk of pothole subsidence progressively decreases to the south as depth of cover increases resulting in the southern areas having a very low risk of subsidence. The paper details the process of determining the location, nature and extent of old mine workings through review of historical records, drilling investigations and assessment of mine workings stability using current techniques with the ultimate purpose being the production of a subsidence constraints map for the HEZ site. The paper also provides estimates of ground subsidence for selected locations including areas of multiple worked seams.
机译：猎人经济区（HEZ）的面积约为900公顷，已划为工业用地，位于塞斯诺克地方政府区域内的Pelaw Main，Kurri Kurri和Weston村的南部。 HEZ将提供大型工业地段，这些工业地段由主干路和内部道路系统提供服务，并可能从北部连接铁路。该地点位于最近宣布的Tomalpin矿山塌陷区。 HEZ在Greta和Homeville煤层中被采煤所破坏，覆盖范围广，从地下不到10 m到南部不到200 m的多个地下工作层。在第一个工作期间开采了三个煤层，在某些情况下还进行了第二个工作。由于广泛的，通常是浅埋的矿井工作，在该矿场北端附近的某些地区存在很高的矿山塌陷影响风险。坑洼式沉陷尤其令人关注。随着覆盖深度的增加，向南的坑洼沉降的风险逐渐降低，导致南部地区的沉降风险非常低。本文详细介绍了通过回顾历史记录，钻探调查以及使用当前技术对矿山作业稳定性进行评估来确定旧矿山作业的位置，性质和范围的过程，其最终目的是为HEZ站点生成沉陷约束图。本文还提供了选定位置（包括多个工作接缝区域）地面沉降的估计值。

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