- "Pa" is used as 'it' when one refers to a spot as "it". For example: Panakalika means 'It (this place) can be sat on'.
- -chimba means to dig.
'-ika/-eka' at end of a verb shows the state of an object. That state could mean "Something(s) is/are already done. = [Subj + Me tense + ika/eka verb ending] Or Something(s) can be done, is/are do-able, is/are possible.... = [Subj + na tense + ika/eka verb ending]
Therefore, panachimba means, 'It (this spot) can be dug.
I have reported the inappropriate answer provide.
A ❤❤❤ ((ma)jembe) is a digging tool used in farming. https://5.imimg.com/data5/PR/XX/MY-21853420/agriculture-hand-❤❤❤-500x500.jpg In this case they manage to dig a hole/canal/something without one. I guess it has the pa- prefix because the hole/canal/something is a place rather than an object.
It means that a place (like mahali or shambani, which demand the prefix pa-) is being dug up/excavated withoud a ❤❤❤ (farmer's utensil). I hope this helps.
Someone is using something other than a ❤❤❤ to dig a hole. or a tree. or a weed.
I though when stative verbs were used in the present tense they would have a "potential" meaning, so this would be "it can be dug without a ❤❤❤". Is this not right?