Richards model of surface dynamic subsidence prediction in mining area

WANG Zheng-shuai; DENG Ka-zhong

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Richards model of surface dynamic subsidence prediction in mining area

更新时间：2026-06-25

- Richards model of surface dynamic subsidence prediction in mining area
- Vol. 32, Issue 6, (2011)
- 作者机构：
  
  1. 中国矿业大学环境与测绘学院,江苏,徐州,221116
  2. 中国矿业大学江苏省资源环境信息工程重点实验室,江苏,徐州,221116
- 作者简介：
- 基金信息：
- DOI：
  CLC： TD325+.2
- Online First：21 June 2011，
  
  Published：2011
- 稿件说明：
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WANG Zheng-shuai, DENG Ka-zhong. Richards model of surface dynamic subsidence prediction in mining area[J]. 2011, 32(6).
DOI：

WANG Zheng-shuai, DENG Ka-zhong. Richards model of surface dynamic subsidence prediction in mining area[J]. 2011, 32(6). DOI：

摘要

针对Knothe时间函数在采动区地表动态沉降预测中存在着较大偏差的问题，提出了地表动态沉降预测的Richards模型。基于开采过程中的地表沉降变形规律，给出了能够反映地表沉降全过程的理想时间函数模型所具有的基本特征，引入Richards生长曲线模型，分析了模型参数与地质采矿条件之间的定性、定量关系，并探讨了模型的适用范围，指出地表发生连续的、渐变的沉降变形时，模型预测效果较好。实例分析表明，Richards模型符合理想时间函数模型的要求，可较好地模拟采动区地表动态沉降过程，能够计算出地表移动持续时间和地表点在某一时刻的下沉值、下沉速度、加速度等动态参数，且模型的可塑性较强，具有较广泛的适用性

Abstract

Aiming at the poor results of Knothe time function in predicting surface dynamic subsidence

Richards model is proposed. Based on analyzing the characteristics of the surface subsidence induced by coal mining

the elementary features of the perfect time function which could describe the full subsidence process are presented; and then

Richards growth model is introduced and established before the qualitative and quantitative relationships between parameters of model and geologic and mining conditions are given. Finally

model applicability is discussed; precise results could be attained while Richards model is applied to continuous and gradual subsidence area. A case study is given. The results show that: Richards model which satisfies the requirements of perfect time function could effectively simulate the whole process of surface subsidence and quickly calculate the parameters

including movement duration and subsidence

velocity and acceleration of a certain point in the surface movement basin at anytime; additionally; the flexibility of Richards model indicates it could be used in practice widely.

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