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A platform for research: civil engineering, architecture and urbanism
Inorganic composite grouting material for coal mine tunnel surrounding rock reinforcement
The invention relates to an inorganic composite grouting material for reinforcing surrounding rock of a coal mine tunnel, which belongs to the technical field of mineral exploitation and comprises the following components in parts by weight: 55-70 parts of Portland cement, 15-25 parts of magnesium phosphate cement, 8-13 parts of an environment-friendly anti-seepage enhancer, 25-35 parts of fine aggregate, 3-4 parts of an exciting agent and 1.2-1.5 parts of a water reducing agent. The environment-friendly impervious enhancer takes desert sand as a core, the desert sand and a silane coupling agent KH550 are subjected to wet mixing and self-promotion hydrolysis by utilizing the characteristic of high alkalinity of the desert sand, and then the desert sand and a polycarboxylic acid chelating agent are subjected to hot mixing reaction, so that the surface of the desert sand is modified, and the surface is endowed with certain chelating property; the colloid structure of the dredged sediment is destroyed by the acidity of the anode mud and residual metal cations to form metal ion-containing combinations, the tiny combinations are captured by chelation to form composite particles, and a mud-containing coating layer is formed on the surface of the desert sand, so that the curing strength and impermeability of the grouting material are greatly improved.
本发明涉及一种煤矿巷道围岩加固无机复合注浆材料，属于矿产开采技术领域，其按照重量份计包括：硅酸盐水泥55‑70份、磷酸镁水泥15‑25份、环保型抗渗强化剂8‑13份、细骨料25‑35份、激发剂3‑4份和减水剂1.2‑1.5份；环保型抗渗强化剂以沙漠砂为核心，利用其碱性高特点，将其与硅烷偶联剂KH550湿拌，自促进水解，再与多羧酸螯合剂热拌反应，对沙漠砂的表面进行改性，赋予表面一定的螯合性，再由阳极泥的酸性和残留金属阳离子破坏疏浚底泥的胶体结构并形成含金属离子的结合体，利用螯合作用捕捉微小结合体形成复合微粒，在沙漠砂表面形成含泥包覆层，大大提高注浆材料的固化强度和抗渗性能。
Inorganic composite grouting material for coal mine tunnel surrounding rock reinforcement
The invention relates to an inorganic composite grouting material for reinforcing surrounding rock of a coal mine tunnel, which belongs to the technical field of mineral exploitation and comprises the following components in parts by weight: 55-70 parts of Portland cement, 15-25 parts of magnesium phosphate cement, 8-13 parts of an environment-friendly anti-seepage enhancer, 25-35 parts of fine aggregate, 3-4 parts of an exciting agent and 1.2-1.5 parts of a water reducing agent. The environment-friendly impervious enhancer takes desert sand as a core, the desert sand and a silane coupling agent KH550 are subjected to wet mixing and self-promotion hydrolysis by utilizing the characteristic of high alkalinity of the desert sand, and then the desert sand and a polycarboxylic acid chelating agent are subjected to hot mixing reaction, so that the surface of the desert sand is modified, and the surface is endowed with certain chelating property; the colloid structure of the dredged sediment is destroyed by the acidity of the anode mud and residual metal cations to form metal ion-containing combinations, the tiny combinations are captured by chelation to form composite particles, and a mud-containing coating layer is formed on the surface of the desert sand, so that the curing strength and impermeability of the grouting material are greatly improved.
本发明涉及一种煤矿巷道围岩加固无机复合注浆材料，属于矿产开采技术领域，其按照重量份计包括：硅酸盐水泥55‑70份、磷酸镁水泥15‑25份、环保型抗渗强化剂8‑13份、细骨料25‑35份、激发剂3‑4份和减水剂1.2‑1.5份；环保型抗渗强化剂以沙漠砂为核心，利用其碱性高特点，将其与硅烷偶联剂KH550湿拌，自促进水解，再与多羧酸螯合剂热拌反应，对沙漠砂的表面进行改性，赋予表面一定的螯合性，再由阳极泥的酸性和残留金属阳离子破坏疏浚底泥的胶体结构并形成含金属离子的结合体，利用螯合作用捕捉微小结合体形成复合微粒，在沙漠砂表面形成含泥包覆层，大大提高注浆材料的固化强度和抗渗性能。
Inorganic composite grouting material for coal mine tunnel surrounding rock reinforcement
一种煤矿巷道围岩加固无机复合注浆材料
ZHENG LIANCHENG (author) / YE JIAGEN (author) / HAN WENYU (author) / REN JUNLONG (author) / WANG MINGWEI (author) / LI YIKE (author)
2024-02-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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