Method and device for determining mining range of pressed coal under building in coal mining subsidence area

• Main Authors: DENG WEINAN, ZHANG HUAN, MA XIAOHUI, GAO CHAO, YIN XIWEN, MA XIAOQIANG, LIU GUI, WEI BOHU, AISATO KAIRYU, XUE ZHIQIANG, WANG MINGLI, TIAN GUOCAN, HU PEI, ZHANG YUJUN, LIU HAIQING
• Format: Patent
• Language: Chinese; English
• Published: 17.10.2023
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; MINING OR QUARRYING

The invention provides a method and device for determining the mining range of pressed coal under a building in a coal mining subsidence area, and the method comprises the steps: obtaining the building in the mining subsidence influence range of a working face, dividing the working face into a plurality of blocks, and determining the ground surface movement deformation data of the building after the coal mining of each block; and under the condition that the sum of the surface movement deformation data corresponding to all the blocks is greater than a preset threshold value, sequentially deleting the blocks until the sum of the surface movement deformation data corresponding to the reserved blocks is less than or equal to the preset threshold value. According to the method, by determining the surface movement deformation data of each block to the building, the mining range of the coal mine is reserved to the maximum in a block deletion mode, a coal mining scheme is accurately and rapidly given, and mining ben