T/KMSHJBHLHH T/KMSHJBHLHH002-2025 Active Group standards

T/KMSHJBHLHH T/KMSHJBHLHH002-2025 Modified phosphogypsum ecological restoration and backfill material

Publish Date: 2025-07-05 Implement Date: 2025-08-05 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/KMSHJBHLHH T/KMSHJBHLHH002-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Integrated Environment and Environmental Protection

Publish Date: 2025-07-05

Implement Date: 2025-08-05

Scope

Scope: This standard specifies the general requirements for modified phosphogypsum ecological restoration backfilling materials, including material requirements, production and processing requirements (including stabilization time requirements), testing requirements (stabilization batch requirements), and quality file management requirements. This document applies to the control of material quality during the backfilling and ecological restoration of mine waste land using modified phosphogypsum materials. Main technical content: I. Terms and Definitions - Phosphogypsum: A chemical by-product mainly composed of calcium sulfate, produced during the wet method of phosphoric acid production. - Modified phosphogypsum: Phosphogypsum products that have undergone processes such as washing and roasting to remove or transform pollutants. - Modified phosphogypsum ecological restoration backfilling materials: Composite materials mainly composed of modified phosphogypsum, with the addition of other components, suitable for ecological restoration of mine waste land, as well as related waterproofing and water-retaining materials. - Backfilling: The activity of filling mine waste land with modified phosphogypsum for ecological restoration purposes. II. General Requirements - Principle of environmental risk control: Before use, an environmental baseline survey of mine waste land (including soil, groundwater, etc.) shall be conducted to assess pollution risks, and the materials may only be used when the risks are acceptable. - Principle of full-process management: Covering the entire process of raw material collection, modification processing, backfilling construction, and post-monitoring, the materials shall comply with laws, regulations, and technical standards, establish a quality management system, and continuously monitor environmental quality. - Principle of local adaptation: Based on the hydrogeological conditions, environmental baseline, and pollution status of mine waste