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A platform for research: civil engineering, architecture and urbanism
Inorganic filling material
The invention discloses an inorganic filling material which comprises materials A and materials B, wherein the materials A comprise the following components in parts by mass: 70 to 80 parts of bauxite powder, 1 to 2 parts of calcium formate, 15 to 20 parts of aluminum oxide, 2 to 5 parts of gypsum, 15 to 20 parts of coal ash and 2 to 5 parts of calcium powder, and the materials B comprise the following components in parts by mass: 30 to 40 parts of gypsum, 20 to 25 parts of lime, 1 to 2 parts of compound accelerator, 0.1 to 1 part of water reducing agent, 1 to 5 parts of expanding agent, 0.1 to 1 part of lauryl sodium sulfate, 1 to 5 parts of polyolefin and 0.1 to 1 part of alkali lignin. The filling material makes close contact with the periphery of a roadway, so as to form a sealed body with good integrality, the integrality is strong, the compressive property is good, a filling body has expansibility, and downhole safe conditions are improved; no combustion or combustion supporting exists, obvious explosion-proof and anti-static properties are achieved, and the gas sealing and fire preventing and extinguishing effects are good; the filling rate is high, a top plate is easy to control, and the top plate in a gob can be effectively controlled, so as to limit depression of the ground.
Inorganic filling material
The invention discloses an inorganic filling material which comprises materials A and materials B, wherein the materials A comprise the following components in parts by mass: 70 to 80 parts of bauxite powder, 1 to 2 parts of calcium formate, 15 to 20 parts of aluminum oxide, 2 to 5 parts of gypsum, 15 to 20 parts of coal ash and 2 to 5 parts of calcium powder, and the materials B comprise the following components in parts by mass: 30 to 40 parts of gypsum, 20 to 25 parts of lime, 1 to 2 parts of compound accelerator, 0.1 to 1 part of water reducing agent, 1 to 5 parts of expanding agent, 0.1 to 1 part of lauryl sodium sulfate, 1 to 5 parts of polyolefin and 0.1 to 1 part of alkali lignin. The filling material makes close contact with the periphery of a roadway, so as to form a sealed body with good integrality, the integrality is strong, the compressive property is good, a filling body has expansibility, and downhole safe conditions are improved; no combustion or combustion supporting exists, obvious explosion-proof and anti-static properties are achieved, and the gas sealing and fire preventing and extinguishing effects are good; the filling rate is high, a top plate is easy to control, and the top plate in a gob can be effectively controlled, so as to limit depression of the ground.
Inorganic filling material
CAI CHANGHUI (author) / LI ZENGHUA (author)
2015-12-30
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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