弃土场，即渣场，渣场的上游汇水面积不宜过大，尽量选在仓库内。
草原区的煤炭开采，大量的挖损和排土场岩土排弃占地面积大，人为堆垫的松散堆积物形成再塑地貌，破坏大面积草场原地貌环境，是新生水土流失的源地。
The area of mine exploitation and outer dump or digging are large in steppe, which destroyed many grassland resources and also formed lots of new soil and water losses.
根据借土场、弃渣场类型的不同，合理布设了综合防护措施。
Different layouts and comprehensive control measures were point out in terms of different kinds of soil pits and residue pits.
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