Loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 淮南矿业集团兴科计量技术服务有限责任公司
- Publication Date
- 2006-02-15
- Estimated Expiration
- Not applicable · inactive patent
Abstract
Description
Technical field:
[0001] The invention relates to a foamed resin consolidation material, more specifically a material suitable for bonding and consolidation of loose coal and rock masses in coal mines and related industries. Background technique:
[0002] The mining of coal mines requires the excavation and maintenance of roadway chambers. Under the action of mine pressure, the surrounding rocks of the roadway, especially the loose coal and rock mass, are very easy to smoke, which brings hidden dangers to the safety of support.
[0003] For the maintenance and reinforcement of loose coal and rock masses that affect safety, in addition to the normal roadway support, the most commonly used methods are: first, pressure injection of hydraulic cementitious materials, such as cement, cement plus water glass, etc.; second, pressure injection of polyurethane bonding materials . Generally, the hydraulic cementitious material is a non-bonding material. Although its bonding with coal a...