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A platform for research: civil engineering, architecture and urbanism
Coal mining waterproof soil layer rotary jet grouting reconstruction method
The invention discloses a coal mining waterproof soil layer rotary jet grouting reconstruction method, and relates to the technical field of geology and mining engineering.The coal mining waterproof soil layer rotary jet grouting reconstruction method comprises the steps that before a coal face is mined, the thickness of a waterproof soil layer is obtained according to a drill hole histogram; in a coal mining stage, a periodic weighting step pitch and an initial weighting step pitch are obtained through mine ground pressure observation; after coal mining is completed on the coal face, a plurality of detection drill holes are formed in the ground of a coal mine area; after coal mining collapse is stable, the average width of internal surface cracks and the average width of boundary surface cracks of the coal face are obtained through ground observation; implementing an internal jet grouting drilling group in the coal face; and implementing a boundary jet grouting drilling group on the boundary of the coal face. The method is simple and easy to implement, the implementation efficiency is high, the anti-seepage effect is better, and the reconstruction effect is better.
本发明公开一种采煤隔水土层旋喷再造方法，涉及地质及采矿工程技术领域，包括：在采煤工作面开采前，根据钻孔柱状图获得隔水土层的厚度；在煤炭开采阶段，通过矿山压力观测获取周期来压步距和初次来压步距；在采煤工作面完成煤炭开采后，在煤矿区地面实施多个探测钻孔；在采煤塌陷稳定后，通过地面观测获取采煤工作面的内部地表裂缝平均宽度和边界地表裂缝平均宽度；在采煤工作面的内部实施内部旋喷钻孔组；在采煤工作面的边界实施边界旋喷钻孔组。本发明的方法简单易实施，并且实施效率高，所达到的防渗效果更好，再造效果更好。
Coal mining waterproof soil layer rotary jet grouting reconstruction method
The invention discloses a coal mining waterproof soil layer rotary jet grouting reconstruction method, and relates to the technical field of geology and mining engineering.The coal mining waterproof soil layer rotary jet grouting reconstruction method comprises the steps that before a coal face is mined, the thickness of a waterproof soil layer is obtained according to a drill hole histogram; in a coal mining stage, a periodic weighting step pitch and an initial weighting step pitch are obtained through mine ground pressure observation; after coal mining is completed on the coal face, a plurality of detection drill holes are formed in the ground of a coal mine area; after coal mining collapse is stable, the average width of internal surface cracks and the average width of boundary surface cracks of the coal face are obtained through ground observation; implementing an internal jet grouting drilling group in the coal face; and implementing a boundary jet grouting drilling group on the boundary of the coal face. The method is simple and easy to implement, the implementation efficiency is high, the anti-seepage effect is better, and the reconstruction effect is better.
本发明公开一种采煤隔水土层旋喷再造方法，涉及地质及采矿工程技术领域，包括：在采煤工作面开采前，根据钻孔柱状图获得隔水土层的厚度；在煤炭开采阶段，通过矿山压力观测获取周期来压步距和初次来压步距；在采煤工作面完成煤炭开采后，在煤矿区地面实施多个探测钻孔；在采煤塌陷稳定后，通过地面观测获取采煤工作面的内部地表裂缝平均宽度和边界地表裂缝平均宽度；在采煤工作面的内部实施内部旋喷钻孔组；在采煤工作面的边界实施边界旋喷钻孔组。本发明的方法简单易实施，并且实施效率高，所达到的防渗效果更好，再造效果更好。
Coal mining waterproof soil layer rotary jet grouting reconstruction method
一种采煤隔水土层旋喷再造方法
BAI RUHONG (author) / FAN LIMIN (author) / LI TAO (author) / SUN QIANG (author) / LI XIAOLONG (author) / LIU NINGPING (author) / SUN KUI (author) / LI BO (author) / LUO YE (author) / YANG JUNWEI (author)
2024-03-12
Patent
Electronic Resource
Chinese
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