KA/T 8-2023 in English

VALID

Technical specification for long-term monitoring of groundwater in mining area

Issued on:2023-10-26
Implemented on:2024-01-31
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	KA/T 8-2023
Document status:	VALID
Title in English:	Technical specification for long-term monitoring of groundwater in mining area
Title in Chinese:	矿区地下水动态长期观测技术规范
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2023-10-26
Implemented on:	2024-01-31
Superseding:	MT/T 633-1996 Technical Specification for Long Term Observation on Groundwater Regime
ICS Classification:	73.020-Mining and quarrying
Chinese Classification:	D14-Hydrogeological survey
Professional Classification:	KA-
Related Keywords:	mining areas technical specification technical specification points standard name technical specification long-term monitoring complete technical methods manual observation
Related Topics:	long term dia technique Groundwater monitoring in mining areas

本文件规定了矿区地下水观测、地表水观测、水样采取的方法和技术要求。
本文件适用于井工煤矿(区)地下水动态长期观测,其他类型矿山可参照执行。

Introduction

Core changes in the standard revision

Dimensions	MT/T 633-1996	KA/T 8-2023	Technical upgrade points
Standard Name	Technical Specification for Long-term Observation of Groundwater Dynamics in Mining Areas	Technical Specification for Long-term Observation of Groundwater Dynamics in Mining Areas	Clearly define the scope of application
Observation objects	Main aquifers	Aquifers + water bodies + water gushing points + surface water bodies	The monitoring system is more complete
Technical methods	Manual observation is the main method	Automated monitoring system + manual review	Introduction of Internet of Things technology

Analysis of key technical requirements

1. Principles of observation network layout

The new standard requires that the observation network should cover the complete groundwater system from the recharge area to the discharge area, and the key areas include:

The drop funnel area formed by mine drainage
The section perpendicular to the flow direction of surface water
Within a radius of 500m from the underground water outlet

Application case: A coal mine arranged a radial observation network around the water inrush point of the F24 fault, using The natural potential method was used to measure the flow field changes and successfully warn of the risk of secondary water inrush.

2. Requirements for automated monitoring

Article 4.2 of the standard clearly stipulates:

"For long-term observation points, it is advisable to install a groundwater dynamic monitoring system to network and synchronize the water level, water temperature, flow rate and other indicators with the mine water inflow for monitoring"

Implementation points:

Monitoring data sampling frequency ≥ 1 time/hour
Data transmission must comply with GB/T 28181 standard
The system should have an automatic alarm function for abnormal values

Implementation suggestions

1. Observation network optimization

It is recommended to adopt a "three-level network layout" strategy:

Network level	Observation point density	Monitoring frequency
Core area	1 point/km²	Real-time monitoring
Control area	1 point/5km²	Once a day
Peripheral area	1 point/10km²	Once a week

2. Transition plan between the old and new standards

It is recommended to implement it in three stages:

Evaluation period (1-3 months): Complete the compliance review of existing observation data in accordance with Appendix A.1
Renovation period (3-6 months): Focus on upgrading the automated monitoring equipment of the long-term observation holes
Acceptance period (1 month): Complete the water quality benchmark test for the entire project according to the requirements of Article 7.7