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印度从1964年开始的下沉调研,已在41个开采盘区/采区完成,另外还正在65个采区上方进行着这种调研。这些成果已用于有关在地面建筑物下方及其附近开采煤层及建筑物保护的80多个课题的研究。帮助煤炭工业在这些条件下采出了700多万吨煤。在苏达姆迪煤矿,在一条铁路干线下方及其附近,用水砂充填方法从三个厚煤层采出约300万吨炼焦煤,这条铁路干线经受了最大596.7mm的下沉,而运输工作正常进行,未受干扰。在姆尼迪煤矿,用冒顶开采法成功地开采了地面建筑物及其他地物下1.7m厚的煤层;而在苏拉卡斯哈而,用充填法广泛开采了水体下方埋藏较浅的一层厚度为1.8～3.0m的煤层。
Indian subsidence surveys, which began in 1964, have been completed in 41 mining panels / mining areas and are being surveyed above 65 mining areas. These results have been used in more than 80 studies on the protection of coal seams and buildings below and near ground structures. Help the coal industry to extract more than 7 million tons of coal under these conditions. At the Suddamdi Coal Mine, about 3 million tons of coking coal were recovered from three thick seams using sand-filling methods below and near a railway trunk. The railway line has undergone a maximum sinking of 596.7 mm, while transport work Normal, undisturbed. At the Mineidi Coal Mine, a 1.7m thick coal seam under ground structures and other features was successfully mined using the roof-top mining method; while in Surakasha, the one buried below the body of water was extensively mined by the filling method Layer thickness of 1.8 ~ 3.0m of the coal seam.