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A platform for research: civil engineering, architecture and urbanism
Grouting reinforcement method based on loose rock coal seam
The invention relates to the technical field of loose rock coal seam grouting reinforcement, and discloses a grouting reinforcement method based on a loose rock coal seam. The grouting reinforcement method comprises the following steps of A, sequentially dividing the upper part of the loose rock coal seam into an upper-layer construction section, a middle-layer construction section and a lower-layer construction section from top to bottom, holes are drilled in the upper-layer construction section, the middle-layer construction section and the lower-layer construction section in a mode of inclining upwards relative to the horizontal plane, after residues in the drilled holes are removed, sleeves are installed in the holes, 2-6 grouting holes should be formed in the upper-layer constructionsection, 5-15 grouting holes should be formed in the middle-layer construction section, and 3-7 grouting holes should be formed in the lower-layer construction section. According to the grouting reinforcement method, the loose rock coal seam is divided into sections, the slurry concentration and the slurry injection amount of the upper-layer construction section and the lower-layer construction section are smaller than those of the middle-layer construction section, so that the middle-layer construction section has higher reinforcing and bearing effects, and loosening and breaking between different coal seams can be effectively prevented.
本发明涉及松散岩煤层注浆加固技术领域，公开了一种基于松散岩煤层的注浆加固方法，包括以下步骤：A：在松散岩煤层的上部从上而下依次划分为上层施工段、中层施工段和下层施工段，在上层施工段、中层施工段和下层施工段上分别沿与水平面倾斜向上钻孔，将钻孔内的残渣清除后，并在孔内安装套管，其中上层施工段应安装2～6个注浆孔，中层施工段应安装5～15个注浆孔，下层施工段应安装3～7个注浆孔。本发明对松散岩煤层进行划层分段，在上层施工段和下层施工段的浆液浓度和浆液注入量少于中层施工段的浆液浓度和浆液注入量，这就使得中层施工段具有较高的加固和承载作用，可以有效防止不同煤层之间出现松散和破碎。
Grouting reinforcement method based on loose rock coal seam
The invention relates to the technical field of loose rock coal seam grouting reinforcement, and discloses a grouting reinforcement method based on a loose rock coal seam. The grouting reinforcement method comprises the following steps of A, sequentially dividing the upper part of the loose rock coal seam into an upper-layer construction section, a middle-layer construction section and a lower-layer construction section from top to bottom, holes are drilled in the upper-layer construction section, the middle-layer construction section and the lower-layer construction section in a mode of inclining upwards relative to the horizontal plane, after residues in the drilled holes are removed, sleeves are installed in the holes, 2-6 grouting holes should be formed in the upper-layer constructionsection, 5-15 grouting holes should be formed in the middle-layer construction section, and 3-7 grouting holes should be formed in the lower-layer construction section. According to the grouting reinforcement method, the loose rock coal seam is divided into sections, the slurry concentration and the slurry injection amount of the upper-layer construction section and the lower-layer construction section are smaller than those of the middle-layer construction section, so that the middle-layer construction section has higher reinforcing and bearing effects, and loosening and breaking between different coal seams can be effectively prevented.
本发明涉及松散岩煤层注浆加固技术领域，公开了一种基于松散岩煤层的注浆加固方法，包括以下步骤：A：在松散岩煤层的上部从上而下依次划分为上层施工段、中层施工段和下层施工段，在上层施工段、中层施工段和下层施工段上分别沿与水平面倾斜向上钻孔，将钻孔内的残渣清除后，并在孔内安装套管，其中上层施工段应安装2～6个注浆孔，中层施工段应安装5～15个注浆孔，下层施工段应安装3～7个注浆孔。本发明对松散岩煤层进行划层分段，在上层施工段和下层施工段的浆液浓度和浆液注入量少于中层施工段的浆液浓度和浆液注入量，这就使得中层施工段具有较高的加固和承载作用，可以有效防止不同煤层之间出现松散和破碎。
Grouting reinforcement method based on loose rock coal seam
一种基于松散岩煤层的注浆加固方法
SUN GUANGJING (author) / LI NAILU (author) / ZHANG HENG (author) / ZHAI LONGHU (author) / FENG CHAOHUI (author)
2021-03-30
Patent
Electronic Resource
Chinese
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