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A platform for research: civil engineering, architecture and urbanism
Grouting material optimization method for advanced grouting of coal seam roof and grouting material thereof
The invention discloses an optimal selection method of a grouting material for advanced grouting of a coal seam roof, which specifically comprises the following steps: step 1, determining an optimal selection index of cement clay slurry by taking the grouting material as a mixture of cement, clay and water; 2, the slurry filling capacity is evaluated according to the slurry stone rate; 3, evaluating the diffusivity of the slurry according to the initial setting time and viscosity of the slurry; step 4, evaluating the water blocking capability of the slurry stone body according to the impermeability grade of the slurry stone body; 5, evaluating the mining-induced damage resistance of the slurry stone body according to the ratio of the elasticity modulus to the tensile strength of the slurry stone body; and 6, selecting the final ratio of the cement clay slurry according to the steps 2-5. According to the method, the grouting material proportion suitable for the advanced grouting treatment characteristics of the roof area can be optimized, so that the advanced grouting treatment layer of the roof area is not damaged by recovery, and the failure of grouting treatment is avoided. The invention further discloses a grouting material for advanced grouting of the coal seam roof.
本发明公开了用于煤层顶板超前注浆的注浆材料优选方法，具体为：步骤1，注浆材料为水泥、黏土以及水的混合物，确定水泥黏土浆液的优选指标；步骤2，根据浆液结石率评价浆液充填能力；步骤3，根据浆液初凝时间、黏度评价浆液扩散能力；步骤4，根据浆液结石体抗渗等级评价浆液结石体阻水能力；步骤5，根据浆液结石体弹性模量与抗拉强度比值评价浆液结石体抗采动破坏能力；步骤6，根据步骤2‑5选择水泥黏土浆液的最终配比。本发明能优选出适合顶板区域超前注浆治理特点的注浆材料配比，使得顶板区域超前注浆治理层位不受回采的破坏，避免注浆治理的失效。本发明还公开了用于煤层顶板超前注浆的注浆材料。
Grouting material optimization method for advanced grouting of coal seam roof and grouting material thereof
The invention discloses an optimal selection method of a grouting material for advanced grouting of a coal seam roof, which specifically comprises the following steps: step 1, determining an optimal selection index of cement clay slurry by taking the grouting material as a mixture of cement, clay and water; 2, the slurry filling capacity is evaluated according to the slurry stone rate; 3, evaluating the diffusivity of the slurry according to the initial setting time and viscosity of the slurry; step 4, evaluating the water blocking capability of the slurry stone body according to the impermeability grade of the slurry stone body; 5, evaluating the mining-induced damage resistance of the slurry stone body according to the ratio of the elasticity modulus to the tensile strength of the slurry stone body; and 6, selecting the final ratio of the cement clay slurry according to the steps 2-5. According to the method, the grouting material proportion suitable for the advanced grouting treatment characteristics of the roof area can be optimized, so that the advanced grouting treatment layer of the roof area is not damaged by recovery, and the failure of grouting treatment is avoided. The invention further discloses a grouting material for advanced grouting of the coal seam roof.
本发明公开了用于煤层顶板超前注浆的注浆材料优选方法，具体为：步骤1，注浆材料为水泥、黏土以及水的混合物，确定水泥黏土浆液的优选指标；步骤2，根据浆液结石率评价浆液充填能力；步骤3，根据浆液初凝时间、黏度评价浆液扩散能力；步骤4，根据浆液结石体抗渗等级评价浆液结石体阻水能力；步骤5，根据浆液结石体弹性模量与抗拉强度比值评价浆液结石体抗采动破坏能力；步骤6，根据步骤2‑5选择水泥黏土浆液的最终配比。本发明能优选出适合顶板区域超前注浆治理特点的注浆材料配比，使得顶板区域超前注浆治理层位不受回采的破坏，避免注浆治理的失效。本发明还公开了用于煤层顶板超前注浆的注浆材料。
Grouting material optimization method for advanced grouting of coal seam roof and grouting material thereof
用于煤层顶板超前注浆的注浆材料优选方法及其注浆材料
FU XIANJIE (author) / DING XIANG (author) / YUM BUB HUN (author) / PU ZHIGUO (author) / DU SHAONENG (author) / SUN MAORU (author) / FENG MINGZHEN (author) / LI ZHE (author) / CHU CHENGXIANG (author) / YAN XIN (author)
2024-10-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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